chore: add additional sanitisation

fix: write new username and display name
chore: restrict discriminator search space

.dockerignore

@@ -1,3 +1,4 @@
+Dockerfile
 target
 .mongo
 .env

.env.example

@@ -0,0 +1,79 @@
+# MongoDB URI
+MONGODB=mongodb://localhost
+
+# URL to where the Revolt app is publicly accessible
+REVOLT_APP_URL=http://local.revolt.chat:5000
+
+# URL to where the API is publicly accessible
+REVOLT_PUBLIC_URL=http://local.revolt.chat:8000
+VITE_API_URL=http://local.revolt.chat:8000
+
+# URL to where the WebSocket server is publicly accessible
+REVOLT_EXTERNAL_WS_URL=ws://local.revolt.chat:9000
+
+# URL to where Autumn is publicly available
+AUTUMN_PUBLIC_URL=http://local.revolt.chat:3000
+
+# URL to where January is publicly available
+JANUARY_PUBLIC_URL=http://local.revolt.chat:7000
+
+# URL to where Vortex is publicly available
+# VOSO_PUBLIC_URL=https://voso.revolt.chat
+
+
+##
+## hCaptcha Settings
+##
+
+# If you are sure that you don't want to use hCaptcha, set to 1.
+REVOLT_UNSAFE_NO_CAPTCHA=1
+
+# hCaptcha API key
+# REVOLT_HCAPTCHA_KEY=0x0000000000000000000000000000000000000000
+
+# hCaptcha site key
+# REVOLT_HCAPTCHA_SITEKEY=10000000-ffff-ffff-ffff-000000000001
+
+
+##
+## Email Settings
+##
+
+# If you are sure that you don't want to use email verification, set to 1.
+REVOLT_UNSAFE_NO_EMAIL=1
+
+# SMTP host
+# REVOLT_SMTP_HOST=smtp.example.com
+
+# SMTP username
+# REVOLT_SMTP_USERNAME=noreply@example.com
+
+# SMTP password
+# REVOLT_SMTP_PASSWORD=CHANGEME
+
+# SMTP From header
+# REVOLT_SMTP_FROM=Revolt <noreply@example.com>
+
+
+##
+## Application Settings
+##
+
+# Whether to only allow users to sign up if they have an invite code
+REVOLT_INVITE_ONLY=0
+
+# Maximum number of people that can be in a group chat
+REVOLT_MAX_GROUP_SIZE=150
+
+# VAPID keys for push notifications
+# Generate using this guide: https://gitlab.insrt.uk/revolt/delta/-/wikis/vapid
+# --> Please replace these keys before going into production! <--
+REVOLT_VAPID_PRIVATE_KEY=LS0tLS1CRUdJTiBFQyBQUklWQVRFIEtFWS0tLS0tCk1IY0NBUUVFSUJSUWpyTWxLRnBiVWhsUHpUbERvcEliYk1yeVNrNXpKYzVYVzIxSjJDS3hvQW9HQ0NxR1NNNDkKQXdFSG9VUURRZ0FFWnkrQkg2TGJQZ2hEa3pEempXOG0rUXVPM3pCajRXT1phdkR6ZU00c0pqbmFwd1psTFE0WAp1ZDh2TzVodU94QWhMQlU3WWRldVovWHlBdFpWZmNyQi9BPT0KLS0tLS1FTkQgRUMgUFJJVkFURSBLRVktLS0tLQo=
+REVOLT_VAPID_PUBLIC_KEY=BGcvgR-i2z4IQ5Mw841vJvkLjt8wY-FjmWrw83jOLCY52qcGZS0OF7nfLzuYbjsQISwVO2HXrmf18gLWVX3Kwfw=
+
+
+##
+## Vortex configuration
+##
+
+# VOSO_MANAGE_TOKEN=CHANGEME

.github/workflows/cla.yml

@@ -0,0 +1,36 @@
+name: "CLA Assistant"
+on:
+  issue_comment:
+    types: [created]
+  pull_request_target:
+    types: [opened,closed,synchronize]
+
+jobs:
+  CLAssistant:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "CLA Assistant"
+        if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request_target'
+        # Beta Release
+        uses: cla-assistant/github-action@v2.1.3-beta
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # the below token should have repo scope and must be manually added by you in the repository's secret
+          PERSONAL_ACCESS_TOKEN : ${{ secrets.PAT }}
+        with:
+          path-to-signatures: 'signatures/version1/cla.json'
+          path-to-document: 'https://github.com/revoltchat/cla/blob/master/CLA.md' # e.g. a CLA or a DCO document
+          # branch should not be protected
+          branch: 'master'
+          allowlist: insertish,bot*
+
+         #below are the optional inputs - If the optional inputs are not given, then default values will be taken
+          remote-organization-name: revoltchat
+          remote-repository-name: cla
+          create-file-commit-message: 'cla(create): creating file for storing CLA Signatures'
+          signed-commit-message: 'cla(sign): $contributorName has signed the CLA in #$pullRequestNo'
+          #custom-notsigned-prcomment: 'pull request comment with Introductory message to ask new contributors to sign'
+          #custom-pr-sign-comment: 'The signature to be committed in order to sign the CLA'
+          #custom-allsigned-prcomment: 'pull request comment when all contributors has signed, defaults to **CLA Assistant Lite bot** All Contributors have signed the CLA.'
+          #lock-pullrequest-aftermerge: false - if you don't want this bot to automatically lock the pull request after merging (default - true)
+          #use-dco-flag: true - If you are using DCO instead of CLA

.github/workflows/docker.yaml

@@ -0,0 +1,124 @@
+name: Docker Test & Publish
+
+on:
+  push:
+    branches:
+      - "master"
+    tags:
+      - "*"
+    paths-ignore:
+      - ".github/**"
+      - "!.github/workflows/docker.yml"
+      - ".vscode/**"
+      - ".gitignore"
+      - "LICENSE"
+      - "README"
+  pull_request:
+    branches:
+      - "master"
+    paths:
+      - "Dockerfile"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  base:
+    runs-on: ubuntu-latest
+    name: Build base image
+    steps:
+      # Configure build environment
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Authenticate with GHCR
+      - name: Login to Github Container Registry
+        if: ${{ github.event_name != 'pull_request' }}
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build base image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          platforms: linux/amd64,linux/arm64
+          tags: ghcr.io/${{ github.repository_owner }}/base:latest
+          cache-from: type=gha,scope=buildx-base-multi-arch
+          cache-to: type=gha,scope=buildx-base-multi-arch,mode=max
+
+  publish:
+    needs: [base]
+    runs-on: ubuntu-latest
+    if: github.event_name != 'pull_request'
+    strategy:
+      matrix:
+        project: [delta, bonfire]
+    name: Build ${{ matrix.project }} image
+    steps:
+      # Configure build environment
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      # Authenticate with Docker Hub and GHCR
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Login to Github Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Resolve the correct project
+      - uses: kanga333/variable-mapper@master
+        id: export
+        with:
+          key: "${{ matrix.project }}"
+          map: |
+            {
+              "delta": {
+                "path": "crates/delta",
+                "tag": "${{ github.repository_owner }}/server"
+              },
+              "bonfire": {
+                "path": "crates/bonfire",
+                "tag": "${{ github.repository_owner }}/bonfire"
+              }
+            }
+          export_to: output
+
+      # Configure metadata
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            docker.io/${{ steps.export.outputs.tag }}
+            ghcr.io/${{ steps.export.outputs.tag }}
+
+      # Build crate image
+      - name: Publish
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          file: ${{ steps.export.outputs.path }}/Dockerfile
+          tags: ${{ steps.meta.outputs.tags }}
+          build-args: |
+            BASE_IMAGE=ghcr.io/${{ github.repository_owner }}/base:latest
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/rust.yaml

@@ -0,0 +1,81 @@
+name: Rust build, test, and generate specification
+
+on:
+  push:
+  pull_request:
+    branches: [master]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  check:
+    name: Rust project
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install latest stable
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+
+      - name: Run cargo build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+
+      - name: Run services in background
+        run: |
+          docker-compose -f docker-compose.db.yml up -d
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - name: Run cargo test (with MongoDB)
+        uses: actions-rs/cargo@v1
+        env:
+          MONGODB: mongodb://localhost
+        with:
+          command: test
+
+      - name: Copy .env.example
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        run: |
+          cp .env.example .env
+
+      - name: Start API in background
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        run: |
+          cargo run --bin revolt-delta &
+
+      - name: Wait for API to go up
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        uses: nev7n/wait_for_response@v1
+        with:
+          url: "http://localhost:8000/"
+
+      - name: Checkout API repository
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        uses: actions/checkout@v3
+        with:
+          repository: revoltchat/api
+          path: api
+          token: ${{ secrets.PAT }}
+
+      - name: Download OpenAPI specification
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        run: curl http://localhost:8000/openapi.json -o api/OpenAPI.json
+
+      - name: Commit changes
+        if: github.event_name != 'pull_request' && github.ref_name == 'master'
+        uses: EndBug/add-and-commit@v4
+        with:
+          cwd: "api"
+          add: "*.json"
+          author_name: Revolt CI
+          author_email: revolt-ci@users.noreply.github.com
+          message: "chore: generate OpenAPI specification"

.github/workflows/triage_issue.yml

@@ -0,0 +1,54 @@
+name: Add Issue to Board
+
+on:
+  issues:
+    types: [opened]
+
+jobs:
+  track_issue:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get project data
+        env:
+          GITHUB_TOKEN: ${{ secrets.PAT }}
+        run: |
+          gh api graphql -f query='
+            query {
+              organization(login: "revoltchat"){
+                projectV2(number: 3) {
+                  id
+                  fields(first:20) {
+                    nodes {
+                      ... on ProjectV2SingleSelectField {
+                        id
+                        name
+                        options {
+                          id
+                          name
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }' > project_data.json
+
+          echo 'PROJECT_ID='$(jq '.data.organization.projectV2.id' project_data.json) >> $GITHUB_ENV
+          echo 'STATUS_FIELD_ID='$(jq '.data.organization.projectV2.fields.nodes[] | select(.name== "Status") | .id' project_data.json) >> $GITHUB_ENV
+          echo 'TODO_OPTION_ID='$(jq '.data.organization.projectV2.fields.nodes[] | select(.name== "Status") | .options[] | select(.name=="Todo") |.id' project_data.json) >> $GITHUB_ENV
+
+      - name: Add issue to project
+        env:
+          GITHUB_TOKEN: ${{ secrets.PAT }}
+          ISSUE_ID: ${{ github.event.issue.node_id }}
+        run: |
+          item_id="$( gh api graphql -f query='
+            mutation($project:ID!, $issue:ID!) {
+              addProjectV2ItemById(input: {projectId: $project, contentId: $issue}) {
+                item {
+                  id
+                }
+              }
+            }' -f project=$PROJECT_ID -f issue=$ISSUE_ID --jq '.data.addProjectV2ItemById.item.id')"
+
+          echo 'ITEM_ID='$item_id >> $GITHUB_ENV

.github/workflows/triage_pr.yml

@@ -0,0 +1,79 @@
+name: Add PR to Board
+
+on:
+  pull_request_target:
+    types: [opened, synchronize, ready_for_review, review_requested]
+
+jobs:
+  track_pr:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get project data
+        env:
+          GITHUB_TOKEN: ${{ secrets.PAT }}
+        run: |
+          gh api graphql -f query='
+            query {
+              organization(login: "revoltchat"){
+                projectV2(number: 3) {
+                  id
+                  fields(first:20) {
+                    nodes {
+                      ... on ProjectV2SingleSelectField {
+                        id
+                        name
+                        options {
+                          id
+                          name
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }' > project_data.json
+
+          echo 'PROJECT_ID='$(jq '.data.organization.projectV2.id' project_data.json) >> $GITHUB_ENV
+          echo 'STATUS_FIELD_ID='$(jq '.data.organization.projectV2.fields.nodes[] | select(.name== "Status") | .id' project_data.json) >> $GITHUB_ENV
+          echo 'INCOMING_OPTION_ID='$(jq '.data.organization.projectV2.fields.nodes[] | select(.name== "Status") | .options[] | select(.name=="Incoming PRs") |.id' project_data.json) >> $GITHUB_ENV
+
+      - name: Add PR to project
+        env:
+          GITHUB_TOKEN: ${{ secrets.PAT }}
+          PR_ID: ${{ github.event.pull_request.node_id }}
+        run: |
+          item_id="$( gh api graphql -f query='
+            mutation($project:ID!, $pr:ID!) {
+              addProjectV2ItemById(input: {projectId: $project, contentId: $pr}) {
+                item {
+                  id
+                }
+              }
+            }' -f project=$PROJECT_ID -f pr=$PR_ID --jq '.data.addProjectV2ItemById.item.id')"
+
+          echo 'ITEM_ID='$item_id >> $GITHUB_ENV
+
+      - name: Set fields
+        env:
+          GITHUB_TOKEN: ${{ secrets.PAT }}
+        run: |
+          gh api graphql -f query='
+            mutation (
+              $project: ID!
+              $item: ID!
+              $status_field: ID!
+              $status_value: String!
+            ) {
+              set_status: updateProjectV2ItemFieldValue(input: {
+                projectId: $project
+                itemId: $item
+                fieldId: $status_field
+                value: {
+                  singleSelectOptionId: $status_value
+                }
+              }) {
+                projectV2Item {
+                  id
+                }
+              }
+            }' -f project=$PROJECT_ID -f item=$ITEM_ID -f status_field=$STATUS_FIELD_ID -f status_value=${{ env.INCOMING_OPTION_ID }} --silent

.gitignore

@@ -1,6 +1,6 @@
 Rocket.toml
-/target
-**/*.rs.bk
-.mongo
+target
+.data
 .env
-avatar.png
+
+.vercel

.gitlab-ci.yml

@@ -1,20 +0,0 @@
-stages:
-  - build
-
-# Rocket does not currently compile on stable Rust.
-# Once it does, we can uncomment this, and instead
-# put `allow-failure: true` on the nightly build.
-#
-# rust-latest:
-#   stage: build
-#   image: rust:latest
-#   script:
-#     - cargo build --verbose
-#     - cargo test --verbose
-
-rust-nightly:
-  stage: build
-  image: rustlang/rust:nightly
-  script:
-    - cargo build --verbose
-    - cargo test --verbose

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "editor.formatOnSave": true,
+    "rust-analyzer.checkOnSave.command": "clippy"
+}

Cargo.toml

@@ -1,49 +1,6 @@
-[package]
-name = "revolt"
-version = "0.3.3-alpha.8"
-authors = ["Paul Makles <paulmakles@gmail.com>"]
-edition = "2018"
+[workspace]
+members = ["crates/delta", "crates/bonfire", "crates/quark", "crates/core/*"]
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-base64 = "0.13.0"
-futures = "0.3.8"
-impl_ops = "0.1.1"
-web-push = "0.7.2"
-many-to-many = "0.1.2"
-ctrlc = { version = "3.0", features = ["termination"] }
-async-std = { version = "1.8.0", features = ["tokio02", "attributes"] }
-async-tungstenite = { version = "0.10.0", features = ["async-std-runtime"] }
-rauth = { git = "https://gitlab.insrt.uk/insert/rauth", rev = "c52758a5087cd035b0ed9c6eacc942ba5468d2ce" }
-
-hive_pubsub = { version = "0.4.3", features = ["mongo"] }
-rocket_cors = { git = "https://github.com/insertish/rocket_cors", branch = "master" }
-rocket_prometheus = { git = "https://github.com/insertish/rocket_prometheus", rev = "3d825aedb42793246c306a81fe67c5b187948983" }
-rocket_contrib = { git = "https://github.com/SergioBenitez/Rocket", rev = "031948c1daaa146128d8a435be116476f2adde00" }
-rocket = { git = "https://github.com/SergioBenitez/Rocket", rev = "031948c1daaa146128d8a435be116476f2adde00", default-features = false }
-mongodb = { version = "1.1.1", features = ["tokio-runtime"], default-features = false }
-
-once_cell = "1.4.1"
-dotenv = "0.15.0"
-ulid = "0.4.1"
-
-serde = { version = "1.0.115", features = ["derive"] }
-validator = { version = "0.11", features = ["derive"] }
-snafu = { version = "0.6.9" }
-serde_json = "1.0.57"
-bitfield = "0.13.2"
-
-reqwest = { version = "0.10.8", features = ["json"] }
-urlencoding = "1.1.1"
-lazy_static = "1.4.0"
-num_enum = "0.5.1"
-chrono = "0.4.15"
-time = "0.2.16"
-rand = "0.7.3"
-md5 = "0.7.0"
-regex = "1"
-
-lettre = "0.10.0-alpha.1"
-env_logger = "0.7.1"
-log = "0.4.11"
+[patch.crates-io]
+# mobc-redis = { git = "https://github.com/insertish/mobc", rev = "8b880bb59f2ba80b4c7bc40c649c113d8857a186" }
+redis = { git = "https://github.com/insertish/redis-rs", rev = "1a41faf356fd21aebba71cea7eb7eb2653e5f0ef" }

Dockerfile

@@ -1,22 +1,32 @@
 # Build Stage
-FROM ekidd/rust-musl-builder:nightly-2021-01-01 AS builder
+FROM --platform="${BUILDPLATFORM}" rust:1.70.0-slim
 USER 0:0
 WORKDIR /home/rust/src
 
-RUN USER=root cargo new --bin revolt
-WORKDIR /home/rust/src/revolt
-COPY Cargo.toml Cargo.lock ./
-COPY assets/templates ./assets/templates
-COPY src ./src
-RUN cargo build --release
+ARG TARGETARCH
 
-# Bundle Stage
-FROM alpine:latest
-RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
-COPY --from=builder /home/rust/src/revolt/target/x86_64-unknown-linux-musl/release/revolt ./
-COPY assets ./assets
-EXPOSE 8000
-EXPOSE 9000
-ENV ROCKET_ADDRESS 0.0.0.0
-ENV ROCKET_PORT 8000
-CMD ["./revolt"]
+# Install build requirements
+RUN dpkg --add-architecture "${TARGETARCH}"
+RUN apt-get update && \
+    apt-get install -y \
+    make \
+    pkg-config \
+    libssl-dev:"${TARGETARCH}"
+COPY scripts/build-image-layer.sh /tmp/
+RUN sh /tmp/build-image-layer.sh tools
+
+# Build all dependencies
+COPY Cargo.toml Cargo.lock ./
+COPY crates/bonfire/Cargo.toml ./crates/bonfire/
+COPY crates/delta/Cargo.toml ./crates/delta/
+COPY crates/quark/Cargo.toml ./crates/quark/
+COPY crates/core/database/Cargo.toml ./crates/core/database/
+COPY crates/core/models/Cargo.toml ./crates/core/models/
+COPY crates/core/permissions/Cargo.toml ./crates/core/permissions/
+COPY crates/core/presence/Cargo.toml ./crates/core/presence/
+COPY crates/core/result/Cargo.toml ./crates/core/result/
+RUN sh /tmp/build-image-layer.sh deps
+
+# Build all apps
+COPY crates ./crates
+RUN sh /tmp/build-image-layer.sh apps

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
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+                     END OF TERMS AND CONDITIONS
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+    Revolt Project
+    Copyright (C) 2022 Pawel Makles
+
+    This program is free software: you can redistribute it and/or modify
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+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.

README.md

@@ -1,20 +1,31 @@
-![](assets/banner.png)
+# Revolt Backend
 
-Delta is a **blazing fast API server** built with Rust for the REVOLT platform.
+This is a monorepo for the Revolt backend.
 
-Features:
-- Robust and efficient API routes for running a chat platform.
-- Distributed notification system, allowing any node to be seamlessly connected.
-- Simple deployment, based mostly on pure Rust code and libraries.
-- Hooks up to a MongoDB deployment, provide URI and no extra work needed.
+| Crate            | Path                                           | Description                          |
+| ---------------- | ---------------------------------------------- | ------------------------------------ |
+| `delta`          | [crates/delta](crates/delta)                   | REST API server                      |
+| `bonfire`        | [crates/bonfire](crates/bonfire)               | WebSocket events server              |
+| `quark`          | [crates/quark](crates/quark)                   | Models and logic                     |
+<!--| `revcord/api`    | [crates/revcord/api](crates/revcord/api)       | Discord REST translation layer       |
+| `revcord/ws`     | [crates/revcord/ws](crates/revcord/ws)         | Discord gateway translation layer    |
+| `revcord/models` | [crates/revcord/models](crates/revcord/models) | Discord models and quark translation |-->
 
-## Docker Helper Scripts
+Note: `january`, `autumn`, and `vortex` are yet to be moved into this monorepo.
 
-If you have Docker installed, you can use the helper scripts to deploy Revolt in your development environment.
+## Resources
 
-```bash
-./build.sh   # build Docker image
-./run.sh     # run Docker container
-./monitor.sh # view container logs
-./remove.sh  # kill and remove container
-```
+### Revolt
+
+- [Revolt Project Board](https://github.com/revoltchat/revolt/discussions) (Submit feature requests here)
+- [Revolt Testers Server](https://app.revolt.chat/invite/Testers)
+- [Contribution Guide](https://developers.revolt.chat/contributing)
+
+## Contributing
+
+The contribution guide is located at [developers.revolt.chat/contributing](https://developers.revolt.chat/contributing).
+Please note that a pull request should only take care of one issue so that we can review it quickly.
+
+## License
+
+The Revolt backend is generally licensed under the [GNU Affero General Public License v3.0](https://github.com/revoltchat/backend/blob/master/LICENSE). Please check individual crates for further license information.

STYLE_GUIDE.md

@@ -0,0 +1,67 @@
+# Code Style Guide
+
+Beyond using Cargo format and Clippy, there are some specific code style guidelines laid out in this document for different parts of the project.
+
+## `core/database` crate
+
+w.r.t. `model.rs` files
+
+- All struct definitions must be commented.
+  ```rust
+  /// Server
+  pub struct Server {
+    /// Name of the server
+    pub name: String,
+  ```
+- Struct definitions should not include derives unless necessary (if additional traits such as Hash are required) and instead use `auto_derived!` and `auto_derived_partial!`.
+  ```rust
+  auto_derived_partial!(
+    /// Server
+    pub struct Server { .. },
+    "PartialServer"
+  );
+  ```
+- `auto_derived!` macro accepts multiple entries and should be used as such:
+  ```rust
+  auto_derived!(
+    /// Optional fields on server object
+    pub enum FieldsServer { .. }
+
+    /// Optional fields on server object
+    pub enum FieldsRole { .. }
+  );
+  ```
+- If special serialisation conditions are required, such as checking if a boolean is false, use the existing definitions for these functions from the crate root:
+  ```rust
+  #[serde(skip_serializing_if = "crate::if_false", default)]
+  ```
+- `impl` blocks may be defined below the struct definitions and should be ordered in the same order of definition. Methods in the block must follow the same guidelines as traits where-in: methods are ordered in terms of CRUD, there are empty line breaks, and methods are commented.
+
+w.r.t. `ops` module for models
+
+- All traits must use a the name format `AbstractPlural` where Plural is the plural form of the collection. e.g. Servers
+- Traits defined must follow these guidelines:
+
+  - Methods are ordered in terms of CRUD, create-read-update-delete ordering.
+
+    ```rust
+    #[async_trait]
+    pub trait AbstractServerMembers: Sync + Send {
+      /// Insert a new server member into the database
+      async fn insert_member(&self, member: &Member) -> Result<()>;
+
+      /// Fetch a server member by their id
+      async fn fetch_member(&self, server_id: &str, user_id: &str) -> Result<Member>;
+
+      /// Update information for a server member
+      async fn update_member(&self, .. ) -> Result<()>;
+
+      /// Delete a server member by their id
+      async fn delete_member(&self, id: &MemberCompositeKey) -> Result<()>;
+    }
+    ```
+
+  - There should be an empty line break between each method declaration.
+  - All methods must have an appropriate comment.
+
+- When implementing the trait defined in `ops.rs` with each driver, the method declaration style should be the same for ease of searching: same ordering, same comments, same line breaks.

assets/templates/reset.html

@@ -1,62 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en-GB">
-<head>
-	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-	<title>Reset your password.</title>
-	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-
-	<style type="text/css">
-		a[x-apple-data-detectors] {color: inherit !important;}
-	</style>
-
-</head>
-<body style="margin: 0; padding: 0;">
-	<table role="presentation" border="0" cellpadding="0" cellspacing="0" width="100%">
-		<tr>
-			<td style="padding: 20px 0 30px 0;">
-
-<table align="center" border="0" cellpadding="0" cellspacing="0" width="600" style="border-collapse: collapse; border: 1px solid #cccccc;">
-	<tr>
-		<td align="center" bgcolor="#ff4654">
-			<img src="https://revolt.chat/header.png" alt="REVOLT logo" width="600" height="168" style="display: block;" />
-		</td>
-	</tr>
-	<tr>
-		<td bgcolor="#ffffff" style="padding: 40px 30px 40px 30px;">
-			<table border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse;">
-				<tr>
-					<td style="color: #153643; font-family: Arial, sans-serif;">
-						<h1 style="font-size: 24px; margin: 0;">Reset your password!</h1>
-					</td>
-				</tr>
-				<tr>
-					<td style="color: #153643; font-family: Arial, sans-serif; font-size: 16px; line-height: 24px; padding: 20px 0 0 0;">
-						<p style="margin: 0;">
-              Reset your password by <a href="{{url}}">clicking here</a>.
-            </p>
-            <p>
-              Or by manually navigating to the URL: {{url}}
-            </p>
-					</td>
-				</tr>
-			</table>
-		</td>
-	</tr>
-	<tr>
-		<td bgcolor="#ff4654" style="padding: 30px 30px;">
-    		<table border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse;">
-				<tr>
-					<td style="color: #ffffff; font-family: Arial, sans-serif; font-size: 14px;">
-            <p style="margin: 0;">Sent by REVOLT. &middot; <a style="color: white;" href="https://revolt.chat">Website</a> &middot; <a style="color: white;" href="https://gitlab.insrt.uk/revolt">Source Code</a></p>
-					</td>
-				</tr>
-			</table>
-		</td>
-	</tr>
-</table>
-
-			</td>
-		</tr>
-	</table>
-</body>
-</html>

assets/templates/verify.html

@@ -1,62 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en-GB">
-<head>
-	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-	<title>Verify your account.</title>
-	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-
-	<style type="text/css">
-		a[x-apple-data-detectors] {color: inherit !important;}
-	</style>
-
-</head>
-<body style="margin: 0; padding: 0;">
-	<table role="presentation" border="0" cellpadding="0" cellspacing="0" width="100%">
-		<tr>
-			<td style="padding: 20px 0 30px 0;">
-
-<table align="center" border="0" cellpadding="0" cellspacing="0" width="600" style="border-collapse: collapse; border: 1px solid #cccccc;">
-	<tr>
-		<td align="center" bgcolor="#ff4654">
-			<img src="https://revolt.chat/header.png" alt="REVOLT logo" width="600" height="168" style="display: block;" />
-		</td>
-	</tr>
-	<tr>
-		<td bgcolor="#ffffff" style="padding: 40px 30px 40px 30px;">
-			<table border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse;">
-				<tr>
-					<td style="color: #153643; font-family: Arial, sans-serif;">
-						<h1 style="font-size: 24px; margin: 0;">Verify your account!</h1>
-					</td>
-				</tr>
-				<tr>
-					<td style="color: #153643; font-family: Arial, sans-serif; font-size: 16px; line-height: 24px; padding: 20px 0 0 0;">
-						<p style="margin: 0;">
-              Please verify your account by <a href="{{url}}">clicking here</a>.
-            </p>
-            <p>
-              Or by manually navigating to the URL: {{url}}
-            </p>
-					</td>
-				</tr>
-			</table>
-		</td>
-	</tr>
-	<tr>
-		<td bgcolor="#ff4654" style="padding: 30px 30px;">
-    		<table border="0" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse;">
-				<tr>
-					<td style="color: #ffffff; font-family: Arial, sans-serif; font-size: 14px;">
-            <p style="margin: 0;">Sent by REVOLT. &middot; <a style="color: white;" href="https://revolt.chat">Website</a> &middot; <a style="color: white;" href="https://gitlab.insrt.uk/revolt">Source Code</a></p>
-					</td>
-				</tr>
-			</table>
-		</td>
-	</tr>
-</table>
-
-			</td>
-		</tr>
-	</table>
-</body>
-</html>

clippy.toml

@@ -0,0 +1,15 @@
+disallowed-methods = [
+    # Shouldn't need to access these directly
+    "revolt_database::models::bots::model::Bot::remove_field",
+
+    # Prefer to use Object::create()
+    "revolt_database::models::safety_strikes::ops::AbstractAccountStrikes::insert_account_strike",
+
+    # Prefer to use Object::update(&self)
+    "revolt_database::models::bots::ops::AbstractBots::update_bot",
+    "revolt_database::models::safety_strikes::ops::AbstractAccountStrikes::update_account_strike",
+
+    # Prefer to use Object::delete(&self)
+    "revolt_database::models::bots::ops::AbstractBots::delete_bot",
+    "revolt_database::models::safety_strikes::ops::AbstractAccountStrikes::delete_account_strike",
+]

crates/bonfire/.gitignore

@@ -0,0 +1 @@
+/target

crates/bonfire/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "revolt-bonfire"
+version = "0.6.1"
+license = "AGPL-3.0-or-later"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+# util
+log = "*"
+once_cell = "1.9.0"
+
+# parsing
+querystring = "1.1.0"
+
+# quark
+revolt-quark = { path = "../quark" }
+
+# serde
+serde_json = "1.0.79"
+rmp-serde = "1.0.0"
+serde = "1.0.136"
+
+# async
+futures = "0.3.21"
+async-tungstenite = { version = "0.17.0", features = ["async-std-runtime"] }
+async-std = { version = "1.8.0", features = ["tokio1", "tokio02", "attributes"] }
+
+# core
+revolt-presence = { path = "../core/presence", features = [ "redis-is-patched" ] }

crates/bonfire/Dockerfile

@@ -0,0 +1,11 @@
+# Build Stage
+FROM ghcr.io/revoltchat/base:latest AS builder
+
+# Bundle Stage
+FROM debian:bullseye-slim
+RUN apt-get update && \
+    apt-get install -y ca-certificates && \
+    apt-get clean
+COPY --from=builder /home/rust/src/target/release/revolt-bonfire ./
+EXPOSE 9000
+CMD ["./revolt-bonfire"]

crates/bonfire/LICENSE

@@ -0,0 +1 @@
+../../LICENSE

crates/bonfire/src/config.rs

@@ -0,0 +1,150 @@
+use async_tungstenite::tungstenite::{handshake, Message};
+use futures::channel::oneshot::Sender;
+use revolt_quark::{Error, Result};
+use serde::{Deserialize, Serialize};
+
+/// Enumeration of supported protocol formats
+#[derive(Debug)]
+pub enum ProtocolFormat {
+    Json,
+    Msgpack,
+}
+
+/// User-provided protocol configuration
+#[derive(Debug)]
+pub struct ProtocolConfiguration {
+    protocol_version: i32,
+    format: ProtocolFormat,
+    session_token: Option<String>,
+}
+
+impl ProtocolConfiguration {
+    /// Create a new protocol configuration object from provided data
+    pub fn from(
+        protocol_version: i32,
+        format: ProtocolFormat,
+        session_token: Option<String>,
+    ) -> Self {
+        Self {
+            protocol_version,
+            format,
+            session_token,
+        }
+    }
+
+    /// Decode some WebSocket message into a T: Deserialize using the client's specified protocol format
+    pub fn decode<'a, T: Deserialize<'a>>(&self, msg: &'a Message) -> Result<T> {
+        match self.format {
+            ProtocolFormat::Json => {
+                if let Message::Text(text) = msg {
+                    serde_json::from_str(text).map_err(|_| Error::InternalError)
+                } else {
+                    Err(Error::InternalError)
+                }
+            }
+            ProtocolFormat::Msgpack => {
+                if let Message::Binary(buf) = msg {
+                    rmp_serde::from_slice(buf).map_err(|_| Error::InternalError)
+                } else {
+                    Err(Error::InternalError)
+                }
+            }
+        }
+    }
+
+    /// Encode T: Serialize into a WebSocket message using the client's specified protocol format
+    pub fn encode<T: Serialize>(&self, data: &T) -> Message {
+        match self.format {
+            ProtocolFormat::Json => {
+                Message::Text(serde_json::to_string(data).expect("Failed to serialise (as json)."))
+            }
+            ProtocolFormat::Msgpack => Message::Binary(
+                rmp_serde::to_vec_named(data).expect("Failed to serialise (as msgpack)."),
+            ),
+        }
+    }
+
+    /// Set the current session token
+    pub fn set_session_token(&mut self, token: String) {
+        self.session_token.replace(token);
+    }
+
+    /// Get the current session token
+    pub fn get_session_token(&self) -> &Option<String> {
+        &self.session_token
+    }
+
+    /// Get the protocol version specified
+    pub fn get_protocol_version(&self) -> i32 {
+        self.protocol_version
+    }
+
+    /// Get the protocol format specified
+    pub fn get_protocol_format(&self) -> &ProtocolFormat {
+        &self.format
+    }
+}
+
+/// Object holding one side of a channel for receiving the parsed information
+pub struct WebsocketHandshakeCallback {
+    sender: Sender<ProtocolConfiguration>,
+}
+
+impl WebsocketHandshakeCallback {
+    /// Create a callback using a given sender
+    pub fn from(sender: Sender<ProtocolConfiguration>) -> Self {
+        Self { sender }
+    }
+}
+
+impl handshake::server::Callback for WebsocketHandshakeCallback {
+    /// Handle request to create a new WebSocket connection
+    fn on_request(
+        self,
+        request: &handshake::server::Request,
+        response: handshake::server::Response,
+    ) -> Result<handshake::server::Response, handshake::server::ErrorResponse> {
+        // Take and parse query parameters from the URI.
+        let query = request.uri().query().unwrap_or_default();
+        let params = querystring::querify(query);
+
+        // Set default values for the protocol.
+        let mut protocol_version = 1;
+        let mut format = ProtocolFormat::Json;
+        let mut session_token = None;
+
+        // Parse and map parameters from key-value to known variables.
+        for (key, value) in params {
+            match key {
+                "version" => {
+                    if let Ok(version) = value.parse() {
+                        protocol_version = version;
+                    }
+                }
+                "format" => match value {
+                    "json" => format = ProtocolFormat::Json,
+                    "msgpack" => format = ProtocolFormat::Msgpack,
+                    _ => {}
+                },
+                "token" => session_token = Some(value.into()),
+                _ => {}
+            }
+        }
+
+        // Send configuration information back from this callback.
+        // We have to use a channel as this function does not borrow mutably.
+        if self
+            .sender
+            .send(ProtocolConfiguration {
+                protocol_version,
+                format,
+                session_token,
+            })
+            .is_ok()
+        {
+            Ok(response)
+        } else {
+            Err(handshake::server::ErrorResponse::new(None))
+        }
+    }
+}

crates/bonfire/src/database.rs

@@ -0,0 +1,19 @@
+use once_cell::sync::OnceCell;
+use revolt_quark::{Database, DatabaseInfo};
+
+static DBCONN: OnceCell<Database> = OnceCell::new();
+
+/// Connect Bonfire to the database.
+pub async fn connect() {
+    let database = DatabaseInfo::Auto
+        .connect()
+        .await
+        .expect("Failed to connect to the database.");
+
+    DBCONN.set(database).expect("Setting `Database`");
+}
+
+/// Get a reference to the current database.
+pub fn get_db() -> &'static Database {
+    DBCONN.get().expect("Valid `Database`")
+}

crates/bonfire/src/main.rs

@@ -0,0 +1,34 @@
+use std::env;
+
+use async_std::net::TcpListener;
+use revolt_presence::clear_region;
+
+#[macro_use]
+extern crate log;
+
+pub mod config;
+
+mod database;
+mod websocket;
+
+#[async_std::main]
+async fn main() {
+    // Configure requirements for Bonfire.
+    revolt_quark::configure!();
+    database::connect().await;
+
+    // Clean up the current region information.
+    clear_region(None).await;
+
+    // Setup a TCP listener to accept WebSocket connections on.
+    // By default, we bind to port 9000 on all interfaces.
+    let bind = env::var("HOST").unwrap_or_else(|_| "0.0.0.0:9000".into());
+    info!("Listening on host {bind}");
+    let try_socket = TcpListener::bind(bind).await;
+    let listener = try_socket.expect("Failed to bind");
+
+    // Start accepting new connections and spawn a client for each connection.
+    while let Ok((stream, addr)) = listener.accept().await {
+        websocket::spawn_client(database::get_db(), stream, addr);
+    }
+}

crates/bonfire/src/websocket.rs

@@ -0,0 +1,252 @@
+use std::net::SocketAddr;
+
+use futures::{channel::oneshot, pin_mut, select, FutureExt, SinkExt, StreamExt, TryStreamExt};
+use revolt_presence::{create_session, delete_session};
+use revolt_quark::{
+    events::{
+        client::EventV1,
+        server::ClientMessage,
+        state::{State, SubscriptionStateChange},
+    },
+    models::{user::UserHint, User},
+    redis_kiss, Database,
+};
+
+use async_std::{net::TcpStream, sync::Mutex, task};
+
+use crate::config::WebsocketHandshakeCallback;
+
+/// Spawn a new WebSocket client worker given access to the database,
+/// the relevant TCP stream and the remote address of the client.
+pub fn spawn_client(db: &'static Database, stream: TcpStream, addr: SocketAddr) {
+    // Spawn a new Async task to work on.
+    task::spawn(async move {
+        info!("User connected from {addr:?}");
+
+        // Upgrade the TCP connection to a WebSocket connection.
+        // In this process, we also parse any additional parameters given.
+        // e.g. wss://example.com?format=json&version=1
+        let (sender, receiver) = oneshot::channel();
+        if let Ok(ws) = async_tungstenite::accept_hdr_async_with_config(
+            stream,
+            WebsocketHandshakeCallback::from(sender),
+            None,
+        )
+        .await
+        {
+            // Verify we've received a valid config, otherwise we should just drop the connection.
+            if let Ok(mut config) = receiver.await {
+                info!(
+                    "User {addr:?} provided protocol configuration (version = {}, format = {:?})",
+                    config.get_protocol_version(),
+                    config.get_protocol_format()
+                );
+
+                // Split the socket for simultaneously read and write.
+                let (write, mut read) = ws.split();
+                let write = Mutex::new(write);
+
+                // If the user has not provided authentication, request information.
+                if config.get_session_token().is_none() {
+                    'outer: while let Ok(message) = read.try_next().await {
+                        if let Ok(ClientMessage::Authenticate { token }) =
+                            config.decode(message.as_ref().unwrap())
+                        {
+                            config.set_session_token(token);
+                            break 'outer;
+                        }
+                    }
+                }
+
+                // Try to authenticate the user.
+                if let Some(token) = config.get_session_token().as_ref() {
+                    match User::from_token(db, token, UserHint::Any).await {
+                        Ok(user) => {
+                            info!("User {addr:?} authenticated as @{}", user.username);
+
+                            // Create local state.
+                            let mut state = State::from(user);
+                            let user_id = state.cache.user_id.clone();
+
+                            // Create presence session.
+                            let (first_session, session_id) = create_session(&user_id, 0).await;
+
+                            // Notify socket we have authenticated.
+                            write
+                                .lock()
+                                .await
+                                .send(config.encode(&EventV1::Authenticated))
+                                .await
+                                .ok();
+
+                            // Download required data to local cache and send Ready payload.
+                            if let Ok(ready_payload) = state.generate_ready_payload(db).await {
+                                write
+                                    .lock()
+                                    .await
+                                    .send(config.encode(&ready_payload))
+                                    .await
+                                    .ok();
+
+                                // If this was the first session, notify other users that we just went online.
+                                if first_session {
+                                    state.broadcast_presence_change(true).await;
+                                }
+
+                                // Create a PubSub connection to poll on.
+                                let listener = async {
+                                    if let Ok(mut conn) = redis_kiss::open_pubsub_connection().await
+                                    {
+                                        loop {
+                                            // Check for state changes for subscriptions.
+                                            match state.apply_state() {
+                                                SubscriptionStateChange::Reset => {
+                                                    for id in state.iter_subscriptions() {
+                                                        conn.subscribe(id).await.unwrap();
+                                                    }
+
+                                                    #[cfg(debug_assertions)]
+                                                    info!("{addr:?} has reset their subscriptions");
+                                                }
+                                                SubscriptionStateChange::Change { add, remove } => {
+                                                    for id in remove {
+                                                        #[cfg(debug_assertions)]
+                                                        info!("{addr:?} unsubscribing from {id}");
+
+                                                        conn.unsubscribe(id).await.unwrap();
+                                                    }
+
+                                                    for id in add {
+                                                        #[cfg(debug_assertions)]
+                                                        info!("{addr:?} subscribing to {id}");
+
+                                                        conn.subscribe(id).await.unwrap();
+                                                    }
+                                                }
+                                                SubscriptionStateChange::None => {}
+                                            }
+
+                                            // * Debug logging of current subscriptions.
+                                            /*#[cfg(debug_assertions)]
+                                            info!(
+                                                "User {addr:?} is subscribed to {:?}",
+                                                state
+                                                    .iter_subscriptions()
+                                                    .collect::<Vec<&String>>()
+                                            );*/
+
+                                            // Handle incoming events.
+                                            match conn.on_message().next().await.map(|item| {
+                                                (
+                                                    item.get_channel_name().to_string(),
+                                                    redis_kiss::decode_payload::<EventV1>(&item),
+                                                )
+                                            }) {
+                                                Some((channel, item)) => {
+                                                    if let Ok(mut event) = item {
+                                                        if state
+                                                            .handle_incoming_event_v1(
+                                                                db, &mut event,
+                                                            )
+                                                            .await
+                                                            && write.lock().await
+                                                                .send(config.encode(&event))
+                                                                .await
+                                                                .is_err()
+                                                        {
+                                                            break;
+                                                        }
+                                                    } else {
+                                                        warn!("Failed to deserialise an event for {channel}!");
+                                                    }
+                                                }
+                                                // No more data, assume we disconnected or otherwise
+                                                // something bad occurred, so disconnect user.
+                                                None => break,
+                                            }
+                                        }
+                                    }
+                                }
+                                .fuse();
+
+                                // Read from WebSocket stream.
+                                let worker =
+                                    async {
+                                        while let Ok(Some(msg)) = read.try_next().await {
+                                            if let Ok(payload) = config.decode(&msg) {
+                                                match payload {
+                                                    ClientMessage::BeginTyping { channel } => {
+                                                        EventV1::ChannelStartTyping {
+                                                            id: channel.clone(),
+                                                            user: user_id.clone(),
+                                                        }
+                                                        .p(channel.clone())
+                                                        .await;
+                                                    }
+                                                    ClientMessage::EndTyping { channel } => {
+                                                        EventV1::ChannelStopTyping {
+                                                            id: channel.clone(),
+                                                            user: user_id.clone(),
+                                                        }
+                                                        .p(channel.clone())
+                                                        .await;
+                                                    }
+                                                    ClientMessage::Ping { data, responded } => {
+                                                        if responded.is_none() {
+                                                            write
+                                                                .lock()
+                                                                .await
+                                                                .send(config.encode(
+                                                                    &EventV1::Pong { data },
+                                                                ))
+                                                                .await
+                                                                .ok();
+                                                        }
+                                                    }
+                                                    _ => {}
+                                                }
+                                            }
+                                        }
+                                    }
+                                    .fuse();
+
+                                // Pin both tasks.
+                                pin_mut!(listener, worker);
+
+                                // Wait for either disconnect or for listener to die.
+                                select!(
+                                    () = listener => {},
+                                    () = worker => {}
+                                );
+
+                                // * Combine the streams back once we are ready to disconnect.
+                                /* ws = read.reunite(write).unwrap(); */
+                            }
+
+                            // Clean up presence session.
+                            let last_session = delete_session(&user_id, session_id).await;
+
+                            // If this was the last session, notify other users that we just went offline.
+                            if last_session {
+                                state.broadcast_presence_change(false).await;
+                            }
+                        }
+                        Err(err) => {
+                            write.lock().await.send(config.encode(&err)).await.ok();
+                        }
+                    }
+                }
+            }
+
+            // * Disconnect the WebSocket if it isn't already.
+            /*ws.close(Some(CloseFrame {
+                code: CloseCode::Normal,
+                reason: std::borrow::Cow::from(""),
+            }))
+            .await
+            .unwrap();*/
+        }
+
+        info!("User disconnected from {addr:?}");
+    });
+}

crates/core/database/Cargo.toml

@@ -0,0 +1,67 @@
+[package]
+name = "revolt-database"
+version = "0.6.1"
+edition = "2021"
+license = "AGPL-3.0-or-later"
+authors = [ "Paul Makles <me@insrt.uk>" ]
+description = "Revolt Backend: Database Implementation"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[features]
+# Databases
+mongodb = [ "dep:mongodb", "bson" ]
+
+# ... Other
+async-std-runtime = [ "async-std" ]
+rocket-impl = [ "rocket", "schemars" ]
+redis-is-patched = [ "revolt-presence/redis-is-patched" ]
+
+# Default Features
+default = [ "mongodb", "async-std-runtime" ]
+
+[dependencies]
+# Core
+revolt-result = { version = "0.6.1", path = "../result" }
+revolt-models = { version = "0.6.1", path = "../models" }
+revolt-presence = { version = "0.6.1", path = "../presence" }
+revolt-permissions = { version = "0.6.1", path = "../permissions", features = [ "serde", "bson" ] }
+
+# Utility
+log = "0.4"
+rand = "0.8.5"
+ulid = "1.0.0"
+nanoid = "0.4.0"
+once_cell = "1.17"
+
+# Serialisation
+serde_json = "1"
+revolt_optional_struct = "0.2.0"
+serde = { version = "1", features = ["derive"] }
+iso8601-timestamp = { version = "0.2.10", features = ["serde", "bson"] }
+
+# Events
+redis-kiss = { version = "0.1.4" }
+
+# Database
+bson = { optional = true, version = "2.1.0" }
+mongodb = { optional = true, version = "2.1.0", default-features = false }
+
+# Database Migration
+unicode-segmentation = "1.10.1"
+regex = "1"
+
+# Async Language Features
+futures = "0.3.19"
+async-trait = "0.1.51"
+async-recursion = "1.0.4"
+
+# Async
+async-std = { version = "1.8.0", features = ["attributes"], optional = true }
+
+# Rocket Impl
+schemars = { version = "0.8.8", optional = true }
+rocket = { version = "0.5.0-rc.2", default-features = false, features = ["json"], optional = true }
+
+# Authifier
+authifier = { version = "1.0" }

crates/core/database/src/drivers/mod.rs

@@ -0,0 +1,67 @@
+mod mongodb;
+mod reference;
+
+pub use self::mongodb::*;
+pub use self::reference::*;
+
+/// Database information to use to create a client
+pub enum DatabaseInfo {
+    /// Auto-detect the database in use
+    Auto,
+    /// Auto-detect the database in use and create an empty testing database
+    Test(String),
+    /// Use the mock database
+    Reference,
+    /// Connect to MongoDB
+    MongoDb { uri: String, database_name: String },
+    /// Use existing MongoDB connection
+    MongoDbFromClient(::mongodb::Client, String),
+}
+
+/// Database
+#[derive(Clone)]
+pub enum Database {
+    /// Mock database
+    Reference(ReferenceDb),
+    /// MongoDB database
+    MongoDb(MongoDb),
+}
+
+impl DatabaseInfo {
+    /// Create a database client from the given database information
+    #[async_recursion]
+    pub async fn connect(self) -> Result<Database, String> {
+        Ok(match self {
+            DatabaseInfo::Auto => {
+                if let Ok(uri) = std::env::var("MONGODB") {
+                    return DatabaseInfo::MongoDb {
+                        uri,
+                        database_name: "revolt".to_string(),
+                    }
+                    .connect()
+                    .await;
+                }
+
+                DatabaseInfo::Reference.connect().await?
+            }
+            DatabaseInfo::Test(database_name) => {
+                if let Ok(uri) = std::env::var("MONGODB") {
+                    return DatabaseInfo::MongoDb { uri, database_name }.connect().await;
+                }
+
+                DatabaseInfo::Reference.connect().await?
+            }
+            DatabaseInfo::Reference => Database::Reference(Default::default()),
+            DatabaseInfo::MongoDb { uri, database_name } => {
+                let client = ::mongodb::Client::with_uri_str(uri)
+                    .await
+                    .map_err(|_| "Failed to init db connection.".to_string())?;
+
+                Database::MongoDb(MongoDb(client, database_name))
+            }
+            DatabaseInfo::MongoDbFromClient(client, database_name) => {
+                Database::MongoDb(MongoDb(client, database_name))
+            }
+        })
+    }
+}

crates/core/database/src/drivers/mongodb.rs

@@ -0,0 +1,243 @@
+use std::collections::HashMap;
+use std::ops::Deref;
+
+use futures::StreamExt;
+use mongodb::bson::{doc, to_document, Document};
+use mongodb::error::Result;
+use mongodb::options::{FindOneOptions, FindOptions};
+use mongodb::results::{DeleteResult, InsertOneResult, UpdateResult};
+use serde::de::DeserializeOwned;
+use serde::Serialize;
+
+database_derived!(
+    #[cfg(feature = "mongodb")]
+    /// MongoDB implementation
+    pub struct MongoDb(pub ::mongodb::Client, pub String);
+);
+
+impl Deref for MongoDb {
+    type Target = mongodb::Client;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+#[allow(dead_code)]
+impl MongoDb {
+    /// Get the Revolt database
+    pub fn db(&self) -> mongodb::Database {
+        self.database(&self.1)
+    }
+
+    /// Get a collection by its name
+    pub fn col<T>(&self, collection: &str) -> mongodb::Collection<T> {
+        self.db().collection(collection)
+    }
+
+    /// Insert one document into a collection
+    pub async fn insert_one<T: Serialize>(
+        &self,
+        collection: &'static str,
+        document: T,
+    ) -> Result<InsertOneResult> {
+        self.col::<T>(collection).insert_one(document, None).await
+    }
+
+    /// Count documents by projection
+    pub async fn count_documents(
+        &self,
+        collection: &'static str,
+        projection: Document,
+    ) -> Result<u64> {
+        self.col::<Document>(collection)
+            .count_documents(projection, None)
+            .await
+    }
+
+    /// Find multiple documents in a collection with options
+    pub async fn find_with_options<O, T: DeserializeOwned + Unpin + Send + Sync>(
+        &self,
+        collection: &'static str,
+        projection: Document,
+        options: O,
+    ) -> Result<Vec<T>>
+    where
+        O: Into<Option<FindOptions>>,
+    {
+        Ok(self
+            .col::<T>(collection)
+            .find(projection, options)
+            .await?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    // Hard fail on invalid documents
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect::<Vec<T>>()
+            .await)
+    }
+
+    /// Find multiple documents in a collection
+    pub async fn find<T: DeserializeOwned + Unpin + Send + Sync>(
+        &self,
+        collection: &'static str,
+        projection: Document,
+    ) -> Result<Vec<T>> {
+        self.find_with_options(collection, projection, None).await
+    }
+
+    /// Find one document with options
+    pub async fn find_one_with_options<O, T: DeserializeOwned + Unpin + Send + Sync>(
+        &self,
+        collection: &'static str,
+        projection: Document,
+        options: O,
+    ) -> Result<Option<T>>
+    where
+        O: Into<Option<FindOneOptions>>,
+    {
+        self.col::<T>(collection)
+            .find_one(projection, options)
+            .await
+    }
+
+    /// Find one document
+    pub async fn find_one<T: DeserializeOwned + Unpin + Send + Sync>(
+        &self,
+        collection: &'static str,
+        projection: Document,
+    ) -> Result<Option<T>> {
+        self.find_one_with_options(collection, projection, None)
+            .await
+    }
+
+    /// Find one document by its ID
+    pub async fn find_one_by_id<T: DeserializeOwned + Unpin + Send + Sync>(
+        &self,
+        collection: &'static str,
+        id: &str,
+    ) -> Result<Option<T>> {
+        self.find_one(
+            collection,
+            doc! {
+                "_id": id
+            },
+        )
+        .await
+    }
+
+    /// Update one document given a projection, partial document, and list of paths to unset
+    pub async fn update_one<P, T: Serialize>(
+        &self,
+        collection: &'static str,
+        projection: Document,
+        partial: T,
+        remove: Vec<&dyn IntoDocumentPath>,
+        prefix: P,
+    ) -> Result<UpdateResult>
+    where
+        P: Into<Option<String>>,
+    {
+        let prefix = prefix.into();
+
+        let mut unset = doc! {};
+        for field in remove {
+            if let Some(path) = field.as_path() {
+                if let Some(prefix) = &prefix {
+                    unset.insert(prefix.to_owned() + path, 1_i32);
+                } else {
+                    unset.insert(path, 1_i32);
+                }
+            }
+        }
+
+        let query = doc! {
+            "$unset": unset,
+            "$set": if let Some(prefix) = &prefix {
+                to_document(&prefix_keys(&partial, prefix))
+            } else {
+                to_document(&partial)
+            }?
+        };
+
+        self.col::<Document>(collection)
+            .update_one(projection, query, None)
+            .await
+    }
+
+    /// Update one document given an ID, partial document, and list of paths to unset
+    pub async fn update_one_by_id<P, T: Serialize>(
+        &self,
+        collection: &'static str,
+        id: &str,
+        partial: T,
+        remove: Vec<&dyn IntoDocumentPath>,
+        prefix: P,
+    ) -> Result<UpdateResult>
+    where
+        P: Into<Option<String>>,
+    {
+        self.update_one(
+            collection,
+            doc! {
+                "_id": id
+            },
+            partial,
+            remove,
+            prefix,
+        )
+        .await
+    }
+
+    /// Delete one document by the given projection
+    pub async fn delete_one(
+        &self,
+        collection: &'static str,
+        projection: Document,
+    ) -> Result<DeleteResult> {
+        self.col::<Document>(collection)
+            .delete_one(projection, None)
+            .await
+    }
+
+    /// Delete one document by the given ID
+    pub async fn delete_one_by_id(
+        &self,
+        collection: &'static str,
+        id: &str,
+    ) -> Result<DeleteResult> {
+        self.delete_one(
+            collection,
+            doc! {
+                "_id": id
+            },
+        )
+        .await
+    }
+}
+
+/// Just a string ID struct
+#[derive(Deserialize)]
+pub struct DocumentId {
+    #[serde(rename = "_id")]
+    pub id: String,
+}
+
+pub trait IntoDocumentPath: Send + Sync {
+    /// Create JSON key path
+    fn as_path(&self) -> Option<&'static str>;
+}
+
+/// Prefix keys on an arbitrary object
+pub fn prefix_keys<T: Serialize>(t: &T, prefix: &str) -> HashMap<String, serde_json::Value> {
+    let v: String = serde_json::to_string(t).unwrap();
+    let v: HashMap<String, serde_json::Value> = serde_json::from_str(&v).unwrap();
+    v.into_iter()
+        .filter(|(_k, v)| !v.is_null())
+        .map(|(k, v)| (prefix.to_owned() + &k, v))
+        .collect()
+}

crates/core/database/src/drivers/reference.rs

@@ -0,0 +1,31 @@
+use std::{collections::HashMap, sync::Arc};
+
+use futures::lock::Mutex;
+
+use crate::{
+    AccountStrike, Bot, Channel, File, Member, MemberCompositeKey, Server, User, UserSettings,
+    Webhook,
+};
+
+database_derived!(
+    /// Reference implementation
+    #[derive(Default)]
+    pub struct ReferenceDb {
+        pub account_strikes: Arc<Mutex<HashMap<String, AccountStrike>>>,
+        pub bots: Arc<Mutex<HashMap<String, Bot>>>,
+        pub channel_webhooks: Arc<Mutex<HashMap<String, Webhook>>>,
+        pub user_settings: Arc<Mutex<HashMap<String, UserSettings>>>,
+        pub users: Arc<Mutex<HashMap<String, User>>>,
+        pub server_members: Arc<Mutex<HashMap<MemberCompositeKey, Member>>>,
+        pub servers: Arc<Mutex<HashMap<String, Server>>>,
+        pub files: Arc<Mutex<HashMap<String, File>>>,
+        pub server_bans: Arc<Mutex<HashMap<String, ()>>>,
+        pub safety_reports: Arc<Mutex<HashMap<String, ()>>>,
+        pub safety_snapshots: Arc<Mutex<HashMap<String, ()>>>,
+        pub emoji: Arc<Mutex<HashMap<String, ()>>>,
+        pub messages: Arc<Mutex<HashMap<String, ()>>>,
+        pub channels: Arc<Mutex<HashMap<String, Channel>>>,
+        pub channel_invites: Arc<Mutex<HashMap<String, ()>>>,
+        pub channel_unreads: Arc<Mutex<HashMap<String, ()>>>,
+    }
+);

crates/core/database/src/events/client.rs

@@ -0,0 +1,269 @@
+use authifier::AuthifierEvent;
+use serde::{Deserialize, Serialize};
+
+use revolt_models::v0::{
+    Channel, FieldsChannel, FieldsWebhook, PartialChannel, PartialWebhook, Webhook,
+};
+use revolt_result::Error;
+
+use crate::Database;
+
+/// WebSocket Client Errors
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(tag = "error")]
+pub enum WebSocketError {
+    LabelMe,
+    InternalError { at: String },
+    InvalidSession,
+    OnboardingNotFinished,
+    AlreadyAuthenticated,
+    MalformedData { msg: String },
+}
+
+/// Ping Packet
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum Ping {
+    Binary(Vec<u8>),
+    Number(usize),
+}
+
+/// Untagged Error
+#[derive(Serialize)]
+#[serde(untagged)]
+pub enum ErrorEvent {
+    Error(WebSocketError),
+    APIError(Error),
+}
+
+/// Protocol Events
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(tag = "type")]
+pub enum EventV1 {
+    /// Multiple events
+    Bulk { v: Vec<EventV1> },
+
+    /// Successfully authenticated
+    Authenticated,
+    /* /// Basic data to cache
+    Ready {
+        users: Vec<User>,
+        servers: Vec<Server>,
+        channels: Vec<Channel>,
+        members: Vec<Member>,
+        emojis: Option<Vec<Emoji>>,
+    },
+
+    /// Ping response
+    Pong { data: Ping },
+
+    /// New message
+    Message(Message),
+
+    /// Update existing message
+    MessageUpdate {
+        id: String,
+        channel: String,
+        data: PartialMessage,
+    },
+
+    /// Append information to existing message
+    MessageAppend {
+        id: String,
+        channel: String,
+        append: AppendMessage,
+    },
+
+    /// Delete message
+    MessageDelete { id: String, channel: String },
+
+    /// New reaction to a message
+    MessageReact {
+        id: String,
+        channel_id: String,
+        user_id: String,
+        emoji_id: String,
+    },
+
+    /// Remove user's reaction from message
+    MessageUnreact {
+        id: String,
+        channel_id: String,
+        user_id: String,
+        emoji_id: String,
+    },
+
+    /// Remove a reaction from message
+    MessageRemoveReaction {
+        id: String,
+        channel_id: String,
+        emoji_id: String,
+    },
+
+    /// Bulk delete messages
+    BulkMessageDelete { channel: String, ids: Vec<String> },
+
+    /// New server
+    ServerCreate {
+        id: String,
+        server: Server,
+        channels: Vec<Channel>,
+    },
+
+    /// Update existing server
+    ServerUpdate {
+        id: String,
+        data: PartialServer,
+        clear: Vec<FieldsServer>,
+    },
+
+    /// Delete server
+    ServerDelete { id: String },
+
+    /// Update existing server member
+    ServerMemberUpdate {
+        id: MemberCompositeKey,
+        data: PartialMember,
+        clear: Vec<FieldsMember>,
+    },
+
+    /// User joins server
+    ServerMemberJoin { id: String, user: String },
+
+    /// User left server
+    ServerMemberLeave { id: String, user: String },
+
+    /// Server role created or updated
+    ServerRoleUpdate {
+        id: String,
+        role_id: String,
+        data: PartialRole,
+        clear: Vec<FieldsRole>,
+    },
+
+    /// Server role deleted
+    ServerRoleDelete { id: String, role_id: String },
+
+    /// Update existing user
+    UserUpdate {
+        id: String,
+        data: PartialUser,
+        clear: Vec<FieldsUser>,
+        event_id: Option<String>,
+    },
+
+    /// Relationship with another user changed
+    UserRelationship {
+        id: String,
+        user: User,
+        // ! this field can be deprecated
+        status: RelationshipStatus,
+    },
+
+    /// Settings updated remotely
+    UserSettingsUpdate { id: String, update: UserSettings },
+
+    /// User has been platform banned or deleted their account
+    ///
+    /// Clients should remove the following associated data:
+    /// - Messages
+    /// - DM Channels
+    /// - Relationships
+    /// - Server Memberships
+    ///
+    /// User flags are specified to explain why a wipe is occurring though not all reasons will necessarily ever appear.
+    UserPlatformWipe { user_id: String, flags: i32 },
+
+    /// New emoji
+    EmojiCreate(Emoji),
+
+    /// Delete emoji
+    EmojiDelete { id: String },
+
+    /// New report
+    ReportCreate(Report), */
+    /// New channel
+    ChannelCreate(Channel),
+
+    /// Update existing channel
+    ChannelUpdate {
+        id: String,
+        data: PartialChannel,
+        clear: Vec<FieldsChannel>,
+    },
+
+    /// Delete channel
+    ChannelDelete { id: String },
+
+    /// User joins a group
+    ChannelGroupJoin { id: String, user: String },
+
+    /// User leaves a group
+    ChannelGroupLeave { id: String, user: String },
+
+    /// User started typing in a channel
+    ChannelStartTyping { id: String, user: String },
+
+    /// User stopped typing in a channel
+    ChannelStopTyping { id: String, user: String },
+
+    /// User acknowledged message in channel
+    ChannelAck {
+        id: String,
+        user: String,
+        message_id: String,
+    },
+
+    /// New webhook
+    WebhookCreate(Webhook),
+
+    /// Update existing webhook
+    WebhookUpdate {
+        id: String,
+        data: PartialWebhook,
+        remove: Vec<FieldsWebhook>,
+    },
+
+    /// Delete webhook
+    WebhookDelete { id: String },
+
+    /// Auth events
+    Auth(AuthifierEvent),
+}
+
+impl EventV1 {
+    /// Publish helper wrapper
+    pub async fn p(self, channel: String) {
+        #[cfg(not(debug_assertions))]
+        redis_kiss::p(channel, self).await;
+
+        #[cfg(debug_assertions)]
+        info!("Publishing event to {channel}: {self:?}");
+
+        #[cfg(debug_assertions)]
+        redis_kiss::publish(channel, self).await.unwrap();
+    }
+
+    /// Publish user event
+    pub async fn p_user(self, id: String, db: &Database) {
+        self.clone().p(id.clone()).await;
+
+        // ! FIXME: this should be captured by member list in the future
+        // ! and not immediately fanned out to users
+        if let Ok(members) = db.fetch_all_memberships(&id).await {
+            for member in members {
+                self.clone().p(member.id.server).await;
+            }
+        }
+    }
+
+    /// Publish private event
+    pub async fn private(self, id: String) {
+        self.p(format!("{id}!")).await;
+    }
+
+    /// Publish internal global event
+    pub async fn global(self) {
+        self.p("global".to_string()).await;
+    }
+}

crates/core/database/src/events/mod.rs

@@ -0,0 +1 @@
+pub mod client;

crates/core/database/src/lib.rs

@@ -0,0 +1,88 @@
+#[macro_use]
+extern crate serde;
+
+#[macro_use]
+extern crate async_recursion;
+
+#[macro_use]
+extern crate async_trait;
+
+#[macro_use]
+extern crate log;
+
+#[macro_use]
+extern crate revolt_optional_struct;
+
+#[macro_use]
+extern crate revolt_result;
+
+#[cfg(feature = "mongodb")]
+pub use mongodb;
+
+#[cfg(feature = "mongodb")]
+#[macro_use]
+extern crate bson;
+
+macro_rules! database_derived {
+    ( $( $item:item )+ ) => {
+        $(
+            #[derive(Clone)]
+            $item
+        )+
+    };
+}
+
+macro_rules! auto_derived {
+    ( $( $item:item )+ ) => {
+        $(
+            #[derive(Serialize, Deserialize, Debug, Clone, Eq, PartialEq)]
+            $item
+        )+
+    };
+}
+
+macro_rules! auto_derived_partial {
+    ( $item:item, $name:expr ) => {
+        #[derive(OptionalStruct, Serialize, Deserialize, Debug, Clone, Default, Eq, PartialEq)]
+        #[optional_derive(Serialize, Deserialize, Debug, Clone, Default, Eq, PartialEq)]
+        #[optional_name = $name]
+        #[opt_skip_serializing_none]
+        #[opt_some_priority]
+        $item
+    };
+}
+
+mod drivers;
+pub use drivers::*;
+
+#[cfg(test)]
+macro_rules! database_test {
+    ( | $db: ident | $test:expr ) => {
+        let db = $crate::DatabaseInfo::Test(format!(
+            "{}:{}",
+            file!().replace('/', "_").replace(".rs", ""),
+            line!()
+        ))
+        .connect()
+        .await
+        .expect("Database connection failed.");
+
+        db.drop_database().await;
+
+        #[allow(clippy::redundant_closure_call)]
+        (|$db: $crate::Database| $test)(db.clone()).await;
+
+        db.drop_database().await
+    };
+}
+
+mod models;
+pub mod util;
+pub use models::*;
+
+pub mod events;
+
+/// Utility function to check if a boolean value is false
+pub fn if_false(t: &bool) -> bool {
+    !t
+}

crates/core/database/src/models/admin_migrations/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/admin_migrations/model.rs

@@ -0,0 +1,24 @@
+auto_derived!(
+    /// Document representing migration information
+    pub struct MigrationInfo {
+        /// Unique Id
+        #[serde(rename = "_id")]
+        pub id: i32,
+        /// Current database revision
+        pub revision: i32,
+    }
+);
+
+#[cfg(test)]
+mod tests {
+    #[async_std::test]
+    async fn migrate() {
+        database_test!(|db| async move {
+            // Initialise the database
+            db.migrate_database().await.unwrap();
+
+            // Migrate the existing database
+            db.migrate_database().await.unwrap()
+        });
+    }
+}

crates/core/database/src/models/admin_migrations/ops.rs

@@ -0,0 +1,12 @@
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractMigrations: Sync + Send {
+    #[cfg(test)]
+    /// Drop the database
+    async fn drop_database(&self);
+
+    /// Migrate the database
+    async fn migrate_database(&self) -> Result<(), ()>;
+}

crates/core/database/src/models/admin_migrations/ops/mongodb.rs

@@ -0,0 +1,33 @@
+use crate::MongoDb;
+
+use super::AbstractMigrations;
+
+mod init;
+mod scripts;
+
+#[async_trait]
+impl AbstractMigrations for MongoDb {
+    #[cfg(test)]
+    /// Drop the database
+    async fn drop_database(&self) {
+        self.db().drop(None).await.ok();
+    }
+
+    /// Migrate the database
+    async fn migrate_database(&self) -> Result<(), ()> {
+        info!("Migrating the database.");
+
+        let list = self
+            .list_database_names(None, None)
+            .await
+            .expect("Failed to fetch database names.");
+
+        if list.iter().any(|x| x == &self.1) {
+            scripts::migrate_database(self).await;
+        } else {
+            init::create_database(self).await;
+        }
+
+        Ok(())
+    }
+}

crates/core/database/src/models/admin_migrations/ops/mongodb/init.rs

@@ -0,0 +1,213 @@
+use super::scripts::LATEST_REVISION;
+
+use crate::mongodb::bson::doc;
+use crate::mongodb::options::CreateCollectionOptions;
+use crate::MongoDb;
+
+pub async fn create_database(db: &MongoDb) {
+    info!("Creating database.");
+    let db = db.db();
+
+    db.create_collection("accounts", None)
+        .await
+        .expect("Failed to create accounts collection.");
+
+    db.create_collection("users", None)
+        .await
+        .expect("Failed to create users collection.");
+
+    db.create_collection("channels", None)
+        .await
+        .expect("Failed to create channels collection.");
+
+    db.create_collection("messages", None)
+        .await
+        .expect("Failed to create messages collection.");
+
+    db.create_collection("servers", None)
+        .await
+        .expect("Failed to create servers collection.");
+
+    db.create_collection("server_members", None)
+        .await
+        .expect("Failed to create server_members collection.");
+
+    db.create_collection("server_bans", None)
+        .await
+        .expect("Failed to create server_bans collection.");
+
+    db.create_collection("channel_invites", None)
+        .await
+        .expect("Failed to create channel_invites collection.");
+
+    db.create_collection("channel_unreads", None)
+        .await
+        .expect("Failed to create channel_unreads collection.");
+
+    db.create_collection("channel_webhooks", None)
+        .await
+        .expect("Failed to create channel_webhooks collection.");
+
+    db.create_collection("migrations", None)
+        .await
+        .expect("Failed to create migrations collection.");
+
+    db.create_collection("attachments", None)
+        .await
+        .expect("Failed to create attachments collection.");
+
+    db.create_collection("user_settings", None)
+        .await
+        .expect("Failed to create user_settings collection.");
+
+    db.create_collection("safety_reports", None)
+        .await
+        .expect("Failed to create safety_reports collection.");
+
+    db.create_collection("safety_snapshots", None)
+        .await
+        .expect("Failed to create safety_snapshots collection.");
+
+    db.create_collection("safety_strikes", None)
+        .await
+        .expect("Failed to create safety_strikes collection.");
+
+    db.create_collection("bots", None)
+        .await
+        .expect("Failed to create bots collection.");
+
+    db.create_collection(
+        "pubsub",
+        CreateCollectionOptions::builder()
+            .capped(true)
+            .size(1_000_000)
+            .build(),
+    )
+    .await
+    .expect("Failed to create pubsub collection.");
+
+    db.run_command(
+        doc! {
+            "createIndexes": "users",
+            "indexes": [
+                {
+                    "key": {
+                        "username": 1_i32
+                    },
+                    "name": "username",
+                    "unique": false,
+                    "collation": {
+                        "locale": "en",
+                        "strength": 2_i32
+                    }
+                },
+                {
+                    "key": {
+                        "username": 1_i32,
+                        "discriminator": 1_i32
+                    },
+                    "name": "username_discriminator",
+                    "unique": true,
+                    "collation": {
+                        "locale": "en",
+                        "strength": 2_i32
+                    }
+                }
+            ]
+        },
+        None,
+    )
+    .await
+    .expect("Failed to create username index.");
+
+    db.run_command(
+        doc! {
+            "createIndexes": "messages",
+            "indexes": [
+                {
+                    "key": {
+                        "content": "text"
+                    },
+                    "name": "content"
+                },
+                {
+                    "key": {
+                        "channel": 1_i32,
+                        "_id": 1_i32
+                    },
+                    "name": "channel_id_compound"
+                },
+                {
+                    "key": {
+                        "author": 1_i32
+                    },
+                    "name": "author"
+                }
+            ]
+        },
+        None,
+    )
+    .await
+    .expect("Failed to create message index.");
+
+    db.run_command(
+        doc! {
+            "createIndexes": "channel_unreads",
+            "indexes": [
+                {
+                    "key": {
+                        "_id.channel": 1_i32,
+                        "_id.user": 1_i32,
+                    },
+                    "name": "compound_id"
+                },
+                {
+                    "key": {
+                        "_id.user": 1_i32,
+                    },
+                    "name": "user_id"
+                }
+            ]
+        },
+        None,
+    )
+    .await
+    .expect("Failed to create channel_unreads index.");
+
+    db.run_command(
+        doc! {
+            "createIndexes": "server_members",
+            "indexes": [
+                {
+                    "key": {
+                        "_id.server": 1_i32,
+                        "_id.user": 1_i32,
+                    },
+                    "name": "compound_id"
+                },
+                {
+                    "key": {
+                        "_id.user": 1_i32,
+                    },
+                    "name": "user_id"
+                }
+            ]
+        },
+        None,
+    )
+    .await
+    .expect("Failed to create server_members index.");
+
+    db.collection("migrations")
+        .insert_one(
+            doc! {
+                "_id": 0_i32,
+                "revision": LATEST_REVISION
+            },
+            None,
+        )
+        .await
+        .expect("Failed to save migration info.");
+
+    info!("Created database.");
+}

crates/core/database/src/models/admin_migrations/ops/mongodb/scripts.rs

@@ -0,0 +1,954 @@
+use std::{collections::HashSet, ops::BitXor, time::Duration};
+
+use crate::{
+    mongodb::{
+        bson::{doc, from_bson, from_document, to_document, Bson, DateTime, Document},
+        options::FindOptions,
+    },
+    MongoDb, DISCRIMINATOR_SEARCH_SPACE,
+};
+use futures::StreamExt;
+use rand::seq::SliceRandom;
+use serde::{Deserialize, Serialize};
+use unicode_segmentation::UnicodeSegmentation;
+
+#[derive(Serialize, Deserialize)]
+struct MigrationInfo {
+    _id: i32,
+    revision: i32,
+}
+
+pub const LATEST_REVISION: i32 = 25;
+
+pub async fn migrate_database(db: &MongoDb) {
+    let migrations = db.col::<Document>("migrations");
+    let data = migrations
+        .find_one(None, None)
+        .await
+        .expect("Failed to fetch migration data.");
+
+    if let Some(doc) = data {
+        let info: MigrationInfo =
+            from_document(doc).expect("Failed to read migration information.");
+
+        let revision = run_migrations(db, info.revision).await;
+
+        migrations
+            .update_one(
+                doc! {
+                    "_id": info._id
+                },
+                doc! {
+                    "$set": {
+                        "revision": revision
+                    }
+                },
+                None,
+            )
+            .await
+            .expect("Failed to commit migration information.");
+
+        info!("Migration complete. Currently at revision {}.", revision);
+    } else {
+        panic!("Database was configured incorrectly, possibly because initalization failed.")
+    }
+}
+
+pub async fn run_migrations(db: &MongoDb, revision: i32) -> i32 {
+    info!("Starting database migration.");
+
+    if revision <= 0 {
+        info!("Running migration [revision 0]: Test migration system.");
+    }
+
+    if revision <= 1 {
+        info!("Running migration [revision 1 / 2021-04-24]: Migrate to Autumn v1.0.0.");
+
+        let messages = db.col::<Document>("messages");
+        let attachments = db.col::<Document>("attachments");
+
+        messages
+            .update_many(
+                doc! { "attachment": { "$exists": 1_i32 } },
+                doc! { "$set": { "attachment.tag": "attachments", "attachment.size": 0_i32 } },
+                None,
+            )
+            .await
+            .expect("Failed to update messages.");
+
+        attachments
+            .update_many(
+                doc! {},
+                doc! { "$set": { "tag": "attachments", "size": 0_i32 } },
+                None,
+            )
+            .await
+            .expect("Failed to update attachments.");
+    }
+
+    if revision <= 2 {
+        info!("Running migration [revision 2 / 2021-05-08]: Add servers collection.");
+
+        db.db()
+            .create_collection("servers", None)
+            .await
+            .expect("Failed to create servers collection.");
+    }
+
+    if revision <= 3 {
+        info!("Running migration [revision 3 / 2021-05-25]: Support multiple file uploads, add channel_unreads and user_settings.");
+
+        let messages = db.col::<Document>("messages");
+        let mut cursor = messages
+            .find(
+                doc! {
+                    "attachment": {
+                        "$exists": 1_i32
+                    }
+                },
+                FindOptions::builder()
+                    .projection(doc! {
+                        "_id": 1_i32,
+                        "attachments": [ "$attachment" ]
+                    })
+                    .build(),
+            )
+            .await
+            .expect("Failed to fetch messages.");
+
+        while let Some(result) = cursor.next().await {
+            let doc = result.unwrap();
+            let id = doc.get_str("_id").unwrap();
+            let attachments = doc.get_array("attachments").unwrap();
+
+            messages
+                .update_one(
+                    doc! { "_id": id },
+                    doc! { "$unset": { "attachment": 1_i32 }, "$set": { "attachments": attachments } },
+                    None,
+                )
+                .await
+                .unwrap();
+        }
+
+        db.db()
+            .create_collection("channel_unreads", None)
+            .await
+            .expect("Failed to create channel_unreads collection.");
+
+        db.db()
+            .create_collection("user_settings", None)
+            .await
+            .expect("Failed to create user_settings collection.");
+    }
+
+    if revision <= 4 {
+        info!("Running migration [revision 4 / 2021-06-01]: Add more server collections.");
+
+        db.db()
+            .create_collection("server_members", None)
+            .await
+            .expect("Failed to create server_members collection.");
+
+        db.db()
+            .create_collection("server_bans", None)
+            .await
+            .expect("Failed to create server_bans collection.");
+
+        db.db()
+            .create_collection("channel_invites", None)
+            .await
+            .expect("Failed to create channel_invites collection.");
+    }
+
+    if revision <= 5 {
+        info!("Running migration [revision 5 / 2021-06-26]: Add permissions.");
+
+        #[derive(Serialize)]
+        struct Server {
+            pub default_permissions: (i32, i32),
+        }
+
+        let server = Server {
+            default_permissions: (0_i32, 0_i32),
+        };
+
+        db.col::<Document>("servers")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$set": to_document(&server).unwrap()
+                },
+                None,
+            )
+            .await
+            .expect("Failed to migrate servers.");
+    }
+
+    if revision <= 6 {
+        info!("Running migration [revision 6 / 2021-07-09]: Add message text index.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "messages",
+                    "indexes": [
+                        {
+                            "key": {
+                                "content": "text"
+                            },
+                            "name": "content"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create message index.");
+    }
+
+    if revision <= 7 {
+        info!("Running migration [revision 7 / 2021-08-11]: Add message text index.");
+
+        db.db()
+            .create_collection("bots", None)
+            .await
+            .expect("Failed to create bots collection.");
+    }
+
+    if revision <= 8 {
+        info!("Running migration [revision 8 / 2021-09-10]: Update to Authifier version 1.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "dropIndexes": "accounts",
+                    "index": ["email", "email_normalised"]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to delete legacy account indexes.");
+
+        let col = db.col::<Document>("sessions");
+        let mut cursor = db
+            .col::<Document>("accounts")
+            .find(doc! {}, None)
+            .await
+            .unwrap();
+
+        while let Some(doc) = cursor.next().await {
+            if let Ok(account) = doc {
+                let id = account.get_str("_id").unwrap();
+                if let Some(sessions) = account.get("sessions") {
+                    #[derive(Deserialize)]
+                    struct Session {
+                        id: String,
+                        token: String,
+                        friendly_name: String,
+                        subscription: Option<Document>,
+                    }
+
+                    let sessions = from_bson::<Vec<Session>>(sessions.clone()).unwrap();
+                    for session in sessions {
+                        info!("Converting session {} to new format.", &session.id);
+
+                        let mut doc = doc! {
+                            "_id": session.id,
+                            "token": session.token,
+                            "user_id": id,
+                            "name": session.friendly_name,
+                        };
+
+                        if let Some(sub) = session.subscription {
+                            doc.insert("subscription", sub);
+                        }
+
+                        col.insert_one(doc, None).await.ok();
+                    }
+                } else {
+                    info!("Account doesn't have any sessions!");
+                }
+            }
+        }
+
+        db.col::<Document>("accounts")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$unset": {
+                        "sessions": 1_i32,
+                    },
+                    "$set": {
+                        "mfa": {
+                            "recovery_codes": []
+                        }
+                    }
+                },
+                None,
+            )
+            .await
+            .unwrap();
+    }
+
+    if revision <= 9 {
+        info!("Running migration [revision 9 / 2021-09-14]: Switch from last_message to last_message_id.");
+
+        let mut cursor = db
+            .col::<Document>("channels")
+            .find(doc! {}, None)
+            .await
+            .unwrap();
+
+        while let Some(doc) = cursor.next().await {
+            if let Ok(channel) = doc {
+                let channel_id = channel.get_str("_id").unwrap();
+                if let Some(last_message) = channel.get("last_message") {
+                    #[derive(Serialize, Deserialize, Debug, Clone)]
+                    pub struct Obj {
+                        #[serde(rename = "_id")]
+                        id: String,
+                    }
+
+                    #[derive(Serialize, Deserialize, Debug, Clone)]
+                    #[serde(untagged)]
+                    pub enum LastMessage {
+                        Obj(Obj),
+                        Id(String),
+                    }
+
+                    let lm = from_bson::<LastMessage>(last_message.clone()).unwrap();
+                    let id = match lm {
+                        LastMessage::Obj(Obj { id }) => id,
+                        LastMessage::Id(id) => id,
+                    };
+
+                    info!("Converting session {} to new format.", &channel_id);
+                    db.col::<Document>("channels")
+                        .update_one(
+                            doc! {
+                                "_id": channel_id
+                            },
+                            doc! {
+                                "$set": {
+                                    "last_message_id": id
+                                },
+                                "$unset": {
+                                    "last_message": 1_i32,
+                                }
+                            },
+                            None,
+                        )
+                        .await
+                        .unwrap();
+                } else {
+                    info!("{} has no last_message.", &channel_id);
+                }
+            }
+        }
+    }
+
+    if revision <= 10 {
+        info!("Running migration [revision 10 / 2021-11-01]: Remove nonce values on channels and servers.");
+
+        db.col::<Document>("servers")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$unset": {
+                        "nonce": 1_i32,
+                    }
+                },
+                None,
+            )
+            .await
+            .unwrap();
+
+        db.col::<Document>("channels")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$unset": {
+                        "nonce": 1_i32,
+                    }
+                },
+                None,
+            )
+            .await
+            .unwrap();
+    }
+
+    if revision <= 11 {
+        info!("Running migration [revision 11 / 2021-11-14]: Add indexes to database.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "messages",
+                    "indexes": [
+                        {
+                            "key": {
+                                "channel": 1_i32
+                            },
+                            "name": "channel"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create message index.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "channel_unreads",
+                    "indexes": [
+                        {
+                            "key": {
+                                "_id.channel": 1_i32,
+                                "_id.user": 1_i32,
+                            },
+                            "name": "compound_id"
+                        },
+                        {
+                            "key": {
+                                "_id.user": 1_i32,
+                            },
+                            "name": "user_id"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create channel_unreads index.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "server_members",
+                    "indexes": [
+                        {
+                            "key": {
+                                "_id.server": 1_i32,
+                                "_id.user": 1_i32,
+                            },
+                            "name": "compound_id"
+                        },
+                        {
+                            "key": {
+                                "_id.user": 1_i32,
+                            },
+                            "name": "user_id"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create server_members index.");
+    }
+
+    if revision <= 12 {
+        info!("Running migration [revision 12 / 2021-11-21]: Add indexes to database.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "messages",
+                    "indexes": [
+                        {
+                            "key": {
+                                "channel": 1_i32,
+                                "_id": 1_i32
+                            },
+                            "name": "channel_id_compound"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create message index.");
+    }
+
+    if revision <= 13 {
+        info!("Running migration [revision 13 / 22-02-2022]: Wipe legacy permission values.");
+
+        warn!("This is a destructive operation and will wipe existing permission data (excl. defaults for SendMessage).");
+        warn!("Taking a backup is advised.");
+        warn!("Continuing in 10 seconds...");
+        async_std::task::sleep(Duration::from_secs(10)).await;
+
+        let servers = db.col::<Document>("servers");
+        let mut cursor = servers.find(doc! {}, None).await.unwrap();
+
+        while let Some(Ok(mut document)) = cursor.next().await {
+            let id = document.get_str("_id").unwrap().to_string();
+            info!("Updating server {id}");
+
+            let mut update = doc! {};
+
+            // Try to pluck channel permission SendMessage (0x2)
+            // Structure of default_permissions used to be [server, channel]
+            let has_send = document
+                .get_array("default_permissions")
+                .map(|x| {
+                    x.get(1)
+                        .map(|x| x.as_i32().map(|x| (x as u32 & 0x2) == 0x2))
+                })
+                .ok()
+                .flatten()
+                .flatten()
+                .unwrap_or_default();
+
+            update.insert(
+                "default_permissions",
+                // Remove Send Message permission if it wasn't originally granted
+                (4000323584).bitxor(if has_send { 0 } else { (1 << 22) as u64 }) as i64,
+            );
+
+            if let Some(Bson::Document(mut roles)) = document.remove("roles") {
+                for role in roles.keys().cloned().collect::<Vec<String>>() {
+                    if let Some(Bson::Document(role)) = roles.get_mut(role) {
+                        role.insert(
+                            "permissions",
+                            doc! {
+                                "a": 0_i64,
+                                "d": 0_i64,
+                            },
+                        );
+                    }
+                }
+
+                update.insert("roles", roles);
+            }
+
+            servers
+                .update_one(doc! { "_id": id }, doc! { "$set": update }, None)
+                .await
+                .unwrap();
+        }
+
+        let channels = db.col::<Document>("channels");
+        let mut cursor = channels.find(doc! {}, None).await.unwrap();
+
+        while let Some(Ok(document)) = cursor.next().await {
+            let id = document.get_str("_id").unwrap().to_string();
+            info!("Updating channel {id}");
+
+            let mut unset = doc! {
+                "permissions": 1_i32,
+                "role_permissions": 1_i32,
+            };
+
+            // Try to pluck channel permission SendMessage (0x2)
+            let has_send = document
+                .get_i32("default_permissions")
+                .map(|x| (x as u32 & 0x2) == 0x2)
+                .unwrap_or(true);
+
+            if has_send {
+                // Let parent permissions fall through.
+                unset.insert("default_permissions", 1_i32);
+            }
+
+            let mut update = doc! {
+                "$unset": unset
+            };
+
+            if !has_send {
+                // Block send message permission.
+                update.insert(
+                    "$set",
+                    doc! {
+                        "default_permissions": {
+                            "a": 0_i64,
+                            "d": (1 << 22) as i64
+                        }
+                    },
+                );
+            }
+
+            channels
+                .update_one(doc! { "_id": id }, update, None)
+                .await
+                .unwrap();
+        }
+    }
+
+    if revision <= 14 {
+        info!("Running migration [revision 14 / 21-04-2022]: Split content into content and system fields.");
+
+        db.col::<Document>("messages")
+            .update_many(
+                doc! {
+                    "content": {
+                        "$type": "object"
+                    }
+                },
+                doc! {
+                    "$rename": {
+                        "content": "system"
+                    }
+                },
+                None,
+            )
+            .await
+            .unwrap();
+    }
+
+    if revision <= 15 {
+        info!("Running migration [revision 15 / 04-06-2022]: Migrate Authifier to latest version.");
+
+        let db = authifier::Database::MongoDb(authifier::database::MongoDb(db.db()));
+        db.run_migration(authifier::Migration::M2022_06_03EnsureUpToSpec)
+            .await
+            .unwrap();
+    }
+
+    if revision <= 16 {
+        info!("Running migration [revision 16 / 07-07-2022]: Add `emojis` collection and Authifier migration.");
+
+        let authifier_db = authifier::Database::MongoDb(authifier::database::MongoDb(db.db()));
+        authifier_db
+            .run_migration(authifier::Migration::M2022_06_09AddIndexForDeletion)
+            .await
+            .unwrap();
+
+        db.db()
+            .create_collection("emojis", None)
+            .await
+            .expect("Failed to create emojis collection.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "emojis",
+                    "indexes": [
+                        {
+                            "key": {
+                                "parent.id": 1_i32,
+                            },
+                            "name": "parent_id"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create emoji parent index.");
+    }
+
+    if revision <= 17 {
+        info!("Running migration [revision 17 / 15-07-2022]: Initialise `joined_at` property on server members.");
+
+        db.col::<Document>("server_members")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$set": {
+                        "joined_at": DateTime::now().to_rfc3339_string()
+                    }
+                },
+                None,
+            )
+            .await
+            .expect("Failed to update server members.");
+    }
+
+    if revision <= 18 {
+        info!("Running migration [revision 18 / 27-02-2022]: Create author index on messages. Drop plain channel index if exists.");
+
+        if db
+            .db()
+            .run_command(
+                doc! {
+                    "dropIndexes": "messages",
+                    "index": ["channel"]
+                },
+                None,
+            )
+            .await
+            .is_err()
+        {
+            info!("Failed to drop `messages.channel` index but this is ok since that means it's probably gone.");
+        }
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "messages",
+                    "indexes": [
+                        {
+                            "key": {
+                                "author": 1_i32,
+                            },
+                            "name": "author"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create messages author index.");
+    }
+
+    if revision <= 19 {
+        info!("Running migration [revision 19 / 27-02-2023]: Create report / snapshot collections, migrate to new model if applicable.");
+
+        db.db()
+            .create_collection("safety_reports", None)
+            .await
+            .unwrap();
+
+        db.db()
+            .create_collection("safety_snapshots", None)
+            .await
+            .unwrap();
+
+        db.col::<Document>("safety_reports")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$set": {
+                        "status": "Created"
+                    }
+                },
+                None,
+            )
+            .await
+            .unwrap();
+    }
+
+    if revision <= 20 {
+        info!("Running migration [revision 20 / 28-02-2023]: Add index `snapshot.report_id`.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "safety_snapshots",
+                    "indexes": [
+                        {
+                            "key": {
+                                "report_id": 1_i32
+                            },
+                            "name": "report_id"
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create safety snapshot index.");
+    }
+
+    if revision <= 21 {
+        info!("Running migration [revision 21 / 31-05-2023]: Add collection `safety_strikes`.");
+
+        db.db()
+            .create_collection("safety_strikes", None)
+            .await
+            .unwrap();
+    }
+
+    if revision <= 22 {
+        info!("Running migration [revision 22 / 31-05-2023]: Add moderator_id to account strikes.");
+
+        db.col::<Document>("safety_strikes")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$set": {
+                        "moderator_id": "01EX2NCWQ0CHS3QJF0FEQS1GR4"
+                    }
+                },
+                None,
+            )
+            .await
+            .expect("Failed to update server members.");
+    }
+
+    if revision <= 23 {
+        info!("Running migration [revision 23 / 10-06-2023]: Generate discriminators for users.");
+
+        db.db()
+            .run_command(
+                doc! {
+                    "dropIndexes": "users",
+                    "index": "username"
+                },
+                None,
+            )
+            .await
+            .expect("Failed to drop existing username index.");
+
+        #[derive(Serialize, Deserialize)]
+        struct UserInformation {
+            #[serde(rename = "_id")]
+            id: String,
+            username: String,
+        }
+
+        let re_username = regex::Regex::new(r"^(\p{L}|[\d_.-])+$").unwrap();
+
+        let users: Vec<UserInformation> = db
+            .col::<UserInformation>("users")
+            .find(doc! {}, None)
+            .await
+            .unwrap()
+            .map(|doc| doc.expect("id and username"))
+            .collect()
+            .await;
+
+        let search_space: Vec<String> = DISCRIMINATOR_SEARCH_SPACE.iter().cloned().collect();
+        let mut claimed: HashSet<String> = HashSet::new();
+
+        for i in 0..users.len() {
+            let info = &users[i];
+            let mut discriminator = {
+                let mut rng = rand::thread_rng();
+                search_space.choose(&mut rng).unwrap()
+            };
+
+            if re_username.is_match(&info.username) {
+                while claimed.contains(&format!("{}#{}", info.username, discriminator)) {
+                    let new_discriminator = {
+                        let mut rng = rand::thread_rng();
+                        search_space.choose(&mut rng).unwrap()
+                    };
+
+                    info!(
+                        "Re-rolled {} to {new_discriminator} from {discriminator}",
+                        info.username
+                    );
+
+                    discriminator = new_discriminator;
+                }
+
+                claimed.insert(format!("{}#{}", info.username, discriminator));
+
+                info!(
+                    "({}/{}) Migrating user \"{}\" to #{} - compliant",
+                    i + 1,
+                    users.len(),
+                    info.username,
+                    discriminator
+                );
+
+                db.col::<UserInformation>("users")
+                    .update_one(
+                        doc! {
+                            "_id": &info.id
+                        },
+                        doc! {
+                            "$set": {
+                                "discriminator": discriminator
+                            }
+                        },
+                        None,
+                    )
+                    .await
+                    .unwrap();
+            } else {
+                let mut sanitised = info
+                    .username
+                    .graphemes(true)
+                    .filter(|s| re_username.is_match(s))
+                    .collect::<String>();
+
+                while sanitised.len() < 2 {
+                    sanitised += "_";
+                }
+
+                while claimed.contains(&format!("{}#{}", sanitised, discriminator)) {
+                    let new_discriminator = {
+                        let mut rng = rand::thread_rng();
+                        search_space.choose(&mut rng).unwrap()
+                    };
+
+                    info!("Re-rolled {sanitised} to {new_discriminator} from {discriminator}");
+                    discriminator = new_discriminator;
+                }
+
+                claimed.insert(format!("{}#{}", sanitised, discriminator));
+
+                info!(
+                    "({}/{}) Migrating user \"{}\" to #{} - sanitised: \"{}\"",
+                    i + 1,
+                    users.len(),
+                    info.username,
+                    discriminator,
+                    sanitised
+                );
+
+                db.col::<UserInformation>("users")
+                    .update_one(
+                        doc! {
+                            "_id": &info.id
+                        },
+                        doc! {
+                            "$set": {
+                                "username": sanitised,
+                                "discriminator": discriminator,
+                                "display_name": &info.username
+                            }
+                        },
+                        None,
+                    )
+                    .await
+                    .unwrap();
+            }
+        }
+    }
+
+    if revision <= 24 {
+        info!("Running migration [revision 24 / 09-06-2023]: Add collection `channel_webhooks` if not exists, update users index.");
+
+        db.db()
+            .create_collection("channel_webhooks", None)
+            .await
+            .ok();
+
+        db.db()
+            .run_command(
+                doc! {
+                    "createIndexes": "users",
+                    "indexes": [
+                        {
+                            "key": {
+                                "username": 1_i32
+                            },
+                            "name": "username",
+                            "unique": false,
+                            "collation": {
+                                "locale": "en",
+                                "strength": 2_i32
+                            }
+                        },
+                        {
+                            "key": {
+                                "username": 1_i32,
+                                "discriminator": 1_i32
+                            },
+                            "name": "username_discriminator",
+                            "unique": true,
+                            "collation": {
+                                "locale": "en",
+                                "strength": 2_i32
+                            }
+                        }
+                    ]
+                },
+                None,
+            )
+            .await
+            .expect("Failed to create username index.");
+    }
+
+    // Need to migrate fields on attachments, change `user_id`, `object_id`, etc to `parent`.
+
+    // Reminder to update LATEST_REVISION when adding new migrations.
+    LATEST_REVISION
+}

crates/core/database/src/models/admin_migrations/ops/reference.rs

@@ -0,0 +1,16 @@
+use crate::ReferenceDb;
+
+use super::AbstractMigrations;
+
+#[async_trait]
+impl AbstractMigrations for ReferenceDb {
+    #[cfg(test)]
+    /// Drop the database
+    async fn drop_database(&self) {}
+
+    /// Migrate the database
+    async fn migrate_database(&self) -> Result<(), ()> {
+        // Here you would do your typical migrations if this was a real database.
+        Ok(())
+    }
+}

crates/core/database/src/models/bots/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/bots/model.rs

@@ -0,0 +1,154 @@
+use revolt_result::Result;
+
+use crate::Database;
+
+auto_derived_partial!(
+    /// Bot
+    pub struct Bot {
+        /// Bot Id
+        ///
+        /// This equals the associated bot user's id.
+        #[serde(rename = "_id")]
+        pub id: String,
+        /// User Id of the bot owner
+        pub owner: String,
+        /// Token used to authenticate requests for this bot
+        pub token: String,
+        /// Whether the bot is public
+        /// (may be invited by anyone)
+        pub public: bool,
+
+        /// Whether to enable analytics
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub analytics: bool,
+        /// Whether this bot should be publicly discoverable
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub discoverable: bool,
+        /// Reserved; URL for handling interactions
+        #[serde(skip_serializing_if = "String::is_empty", default)]
+        pub interactions_url: String,
+        /// URL for terms of service
+        #[serde(skip_serializing_if = "String::is_empty", default)]
+        pub terms_of_service_url: String,
+        /// URL for privacy policy
+        #[serde(skip_serializing_if = "String::is_empty", default)]
+        pub privacy_policy_url: String,
+
+        /// Enum of bot flags
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub flags: Option<i32>,
+    },
+    "PartialBot"
+);
+
+auto_derived!(
+    /// Optional fields on bot object
+    pub enum FieldsBot {
+        Token,
+        InteractionsURL,
+    }
+);
+
+#[allow(clippy::disallowed_methods)]
+impl Bot {
+    /// Remove a field from this object
+    pub fn remove_field(&mut self, field: &FieldsBot) {
+        match field {
+            FieldsBot::Token => self.token = nanoid::nanoid!(64),
+            FieldsBot::InteractionsURL => {
+                self.interactions_url = String::new();
+            }
+        }
+    }
+
+    /// Update this bot
+    pub async fn update(
+        &mut self,
+        db: &Database,
+        mut partial: PartialBot,
+        remove: Vec<FieldsBot>,
+    ) -> Result<()> {
+        if remove.contains(&FieldsBot::Token) {
+            partial.token = Some(nanoid::nanoid!(64));
+        }
+
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        db.update_bot(&self.id, &partial, remove).await?;
+
+        self.apply_options(partial);
+        Ok(())
+    }
+
+    /// Delete this bot
+    pub async fn delete(&self, db: &Database) -> Result<()> {
+        db.fetch_user(&self.id).await?.mark_deleted(db).await?;
+        db.delete_bot(&self.id).await
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{Bot, FieldsBot, PartialBot, User};
+
+    #[async_std::test]
+    async fn crud() {
+        database_test!(|db| async move {
+            let bot_id = "bot";
+            let user_id = "user";
+            let token = "my_token";
+
+            let user = User {
+                id: bot_id.to_string(),
+                username: "Bot Name".to_string(),
+                ..Default::default()
+            };
+
+            db.insert_user(&user).await.unwrap();
+
+            let bot = Bot {
+                id: bot_id.to_string(),
+                owner: user_id.to_string(),
+                token: token.to_string(),
+                interactions_url: "some url".to_string(),
+                ..Default::default()
+            };
+
+            db.insert_bot(&bot).await.unwrap();
+
+            let mut updated_bot = bot.clone();
+            updated_bot
+                .update(
+                    &db,
+                    PartialBot {
+                        public: Some(true),
+                        ..Default::default()
+                    },
+                    vec![FieldsBot::Token, FieldsBot::InteractionsURL],
+                )
+                .await
+                .unwrap();
+
+            let fetched_bot1 = db.fetch_bot(bot_id).await.unwrap();
+            let fetched_bot2 = db.fetch_bot_by_token(&fetched_bot1.token).await.unwrap();
+            let fetched_bots = db.fetch_bots_by_user(user_id).await.unwrap();
+
+            assert!(!bot.public);
+            assert!(fetched_bot1.public);
+            assert!(!bot.interactions_url.is_empty());
+            assert!(fetched_bot1.interactions_url.is_empty());
+            assert_ne!(bot.token, fetched_bot1.token);
+            assert_eq!(updated_bot, fetched_bot1);
+            assert_eq!(fetched_bot1, fetched_bot2);
+            assert_eq!(fetched_bot1, fetched_bots[0]);
+            assert_eq!(1, db.get_number_of_bots_by_user(user_id).await.unwrap());
+
+            bot.delete(&db).await.unwrap();
+            assert!(db.fetch_bot(bot_id).await.is_err());
+            assert_eq!(0, db.get_number_of_bots_by_user(user_id).await.unwrap());
+            assert_eq!(db.fetch_user(bot_id).await.unwrap().flags, Some(2))
+        });
+    }
+}

crates/core/database/src/models/bots/ops.rs

@@ -0,0 +1,35 @@
+use revolt_result::Result;
+
+use crate::{Bot, FieldsBot, PartialBot};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractBots: Sync + Send {
+    /// Insert new bot into the database
+    async fn insert_bot(&self, bot: &Bot) -> Result<()>;
+
+    /// Fetch a bot by its id
+    async fn fetch_bot(&self, id: &str) -> Result<Bot>;
+
+    /// Fetch a bot by its token
+    async fn fetch_bot_by_token(&self, token: &str) -> Result<Bot>;
+
+    /// Fetch bots owned by a user
+    async fn fetch_bots_by_user(&self, user_id: &str) -> Result<Vec<Bot>>;
+
+    /// Get the number of bots owned by a user
+    async fn get_number_of_bots_by_user(&self, user_id: &str) -> Result<usize>;
+
+    /// Update bot with new information
+    async fn update_bot(
+        &self,
+        id: &str,
+        partial: &PartialBot,
+        remove: Vec<FieldsBot>,
+    ) -> Result<()>;
+
+    /// Delete a bot from the database
+    async fn delete_bot(&self, id: &str) -> Result<()>;
+}

crates/core/database/src/models/bots/ops/mongodb.rs

@@ -0,0 +1,92 @@
+use revolt_result::Result;
+
+use crate::{Bot, FieldsBot, PartialBot};
+use crate::{IntoDocumentPath, MongoDb};
+
+use super::AbstractBots;
+
+static COL: &str = "bots";
+
+#[async_trait]
+impl AbstractBots for MongoDb {
+    /// Insert new bot into the database
+    async fn insert_bot(&self, bot: &Bot) -> Result<()> {
+        query!(self, insert_one, COL, &bot).map(|_| ())
+    }
+
+    /// Fetch a bot by its id
+    async fn fetch_bot(&self, id: &str) -> Result<Bot> {
+        query!(self, find_one_by_id, COL, id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a bot by its token
+    async fn fetch_bot_by_token(&self, token: &str) -> Result<Bot> {
+        query!(
+            self,
+            find_one,
+            COL,
+            doc! {
+                "token": token
+            }
+        )?
+        .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch bots owned by a user
+    async fn fetch_bots_by_user(&self, user_id: &str) -> Result<Vec<Bot>> {
+        query!(
+            self,
+            find,
+            COL,
+            doc! {
+                "owner": user_id
+            }
+        )
+    }
+
+    /// Get the number of bots owned by a user
+    async fn get_number_of_bots_by_user(&self, user_id: &str) -> Result<usize> {
+        query!(
+            self,
+            count_documents,
+            COL,
+            doc! {
+                "owner": user_id
+            }
+        )
+        .map(|v| v as usize)
+    }
+
+    /// Update bot with new information
+    async fn update_bot(
+        &self,
+        id: &str,
+        partial: &PartialBot,
+        remove: Vec<FieldsBot>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            id,
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    /// Delete a bot from the database
+    async fn delete_bot(&self, id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, id).map(|_| ())
+    }
+}
+
+impl IntoDocumentPath for FieldsBot {
+    fn as_path(&self) -> Option<&'static str> {
+        match self {
+            FieldsBot::InteractionsURL => Some("interactions_url"),
+            FieldsBot::Token => None,
+        }
+    }
+}

crates/core/database/src/models/bots/ops/reference.rs

@@ -0,0 +1,82 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{Bot, FieldsBot, PartialBot};
+
+use super::AbstractBots;
+
+#[async_trait]
+impl AbstractBots for ReferenceDb {
+    /// Insert new bot into the database
+    async fn insert_bot(&self, bot: &Bot) -> Result<()> {
+        let mut bots = self.bots.lock().await;
+        if bots.contains_key(&bot.id) {
+            Err(create_database_error!("insert", "bot"))
+        } else {
+            bots.insert(bot.id.to_string(), bot.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch a bot by its id
+    async fn fetch_bot(&self, id: &str) -> Result<Bot> {
+        let bots = self.bots.lock().await;
+        bots.get(id).cloned().ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a bot by its token
+    async fn fetch_bot_by_token(&self, token: &str) -> Result<Bot> {
+        let bots = self.bots.lock().await;
+        bots.values()
+            .find(|bot| bot.token == token)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch bots owned by a user
+    async fn fetch_bots_by_user(&self, user_id: &str) -> Result<Vec<Bot>> {
+        let bots = self.bots.lock().await;
+        Ok(bots
+            .values()
+            .filter(|bot| bot.owner == user_id)
+            .cloned()
+            .collect())
+    }
+
+    /// Get the number of bots owned by a user
+    async fn get_number_of_bots_by_user(&self, user_id: &str) -> Result<usize> {
+        let bots = self.bots.lock().await;
+        Ok(bots.values().filter(|bot| bot.owner == user_id).count())
+    }
+
+    /// Update bot with new information
+    async fn update_bot(
+        &self,
+        id: &str,
+        partial: &PartialBot,
+        remove: Vec<FieldsBot>,
+    ) -> Result<()> {
+        let mut bots = self.bots.lock().await;
+        if let Some(bot) = bots.get_mut(id) {
+            for field in remove {
+                #[allow(clippy::disallowed_methods)]
+                bot.remove_field(&field);
+            }
+
+            bot.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete a bot from the database
+    async fn delete_bot(&self, id: &str) -> Result<()> {
+        let mut bots = self.bots.lock().await;
+        if bots.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/channel_webhooks/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/channel_webhooks/model.rs

@@ -0,0 +1,158 @@
+use revolt_result::Result;
+
+use crate::events::client::EventV1;
+use crate::{Database, File};
+
+auto_derived_partial!(
+    /// Webhook
+    pub struct Webhook {
+        /// Webhook Id
+        #[serde(rename = "_id")]
+        pub id: String,
+
+        /// The name of the webhook
+        pub name: String,
+
+        /// The avatar of the webhook
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub avatar: Option<File>,
+
+        /// The channel this webhook belongs to
+        pub channel_id: String,
+
+        /// The private token for the webhook
+        pub token: Option<String>,
+    },
+    "PartialWebhook"
+);
+
+auto_derived!(
+    /// Optional fields on webhook object
+    pub enum FieldsWebhook {
+        Avatar,
+    }
+);
+
+#[allow(clippy::disallowed_methods)]
+impl Webhook {
+    pub async fn create(&self, db: &Database) -> Result<()> {
+        db.insert_webhook(self).await?;
+
+        // Avoid leaking the token to people who receive the event
+        let mut webhook = self.clone();
+        webhook.token = None;
+
+        EventV1::WebhookCreate(webhook.into())
+            .p(self.channel_id.clone())
+            .await;
+
+        Ok(())
+    }
+
+    pub fn assert_token(&self, token: &str) -> Result<()> {
+        if self.token.as_deref() == Some(token) {
+            Ok(())
+        } else {
+            Err(create_error!(InvalidCredentials))
+        }
+    }
+
+    pub async fn update(
+        &mut self,
+        db: &Database,
+        mut partial: PartialWebhook,
+        remove: Vec<FieldsWebhook>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field)
+        }
+
+        self.apply_options(partial.clone());
+
+        db.update_webhook(&self.id, &partial, &remove).await?;
+
+        partial.token = None; // Avoid leaking the token to people who receive the event
+
+        EventV1::WebhookUpdate {
+            id: self.id.clone(),
+            data: partial.into(),
+            remove: remove.into_iter().map(|v| v.into()).collect(),
+        }
+        .p(self.channel_id.clone())
+        .await;
+
+        Ok(())
+    }
+
+    pub fn remove_field(&mut self, field: &FieldsWebhook) {
+        match field {
+            FieldsWebhook::Avatar => self.avatar = None,
+        }
+    }
+
+    pub async fn delete(&self, db: &Database) -> Result<()> {
+        db.delete_webhook(&self.id).await?;
+
+        EventV1::WebhookDelete {
+            id: self.id.clone(),
+        }
+        .p(self.channel_id.clone())
+        .await;
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::{FieldsWebhook, PartialWebhook, Webhook};
+
+    #[async_std::test]
+    async fn crud() {
+        database_test!(|db| async move {
+            let webhook_id = "webhook";
+            let channel_id = "channel";
+
+            let webhook = Webhook {
+                id: webhook_id.to_string(),
+                name: "Webhook Name".to_string(),
+                channel_id: channel_id.to_string(),
+                avatar: Some(Default::default()),
+                ..Default::default()
+            };
+
+            db.insert_webhook(&webhook).await.unwrap();
+
+            let mut updated_webhook = webhook.clone();
+            updated_webhook
+                .update(
+                    &db,
+                    PartialWebhook {
+                        name: Some("New Name".to_string()),
+                        ..Default::default()
+                    },
+                    vec![FieldsWebhook::Avatar],
+                )
+                .await
+                .unwrap();
+
+            let fetched_webhook = db.fetch_webhook(webhook_id).await.unwrap();
+            let fetched_webhooks = db.fetch_webhooks_for_channel(channel_id).await.unwrap();
+
+            assert_eq!(updated_webhook, fetched_webhook);
+            assert_ne!(webhook, fetched_webhook);
+            assert_eq!(1, fetched_webhooks.len());
+            assert_eq!(fetched_webhook, fetched_webhooks[0]);
+
+            webhook.delete(&db).await.unwrap();
+            assert!(db.fetch_webhook(webhook_id).await.is_err());
+            assert_eq!(
+                0,
+                db.fetch_webhooks_for_channel(channel_id)
+                    .await
+                    .unwrap()
+                    .len()
+            )
+        });
+    }
+}

crates/core/database/src/models/channel_webhooks/ops.rs

@@ -0,0 +1,29 @@
+use revolt_result::Result;
+
+use crate::{FieldsWebhook, PartialWebhook, Webhook};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractWebhooks: Sync + Send {
+    /// Insert new webhook into the database
+    async fn insert_webhook(&self, webhook: &Webhook) -> Result<()>;
+
+    /// Fetch webhook by id
+    async fn fetch_webhook(&self, webhook_id: &str) -> Result<Webhook>;
+
+    /// Fetch webhooks for channel
+    async fn fetch_webhooks_for_channel(&self, channel_id: &str) -> Result<Vec<Webhook>>;
+
+    /// Update webhook with new information
+    async fn update_webhook(
+        &self,
+        webhook_id: &str,
+        partial: &PartialWebhook,
+        remove: &[FieldsWebhook],
+    ) -> Result<()>;
+
+    /// Delete webhook by id
+    async fn delete_webhook(&self, webhook_id: &str) -> Result<()>;
+}

crates/core/database/src/models/channel_webhooks/ops/mongodb.rs

@@ -0,0 +1,77 @@
+use futures::StreamExt;
+use revolt_result::Result;
+
+use crate::{FieldsWebhook, PartialWebhook, Webhook};
+use crate::{IntoDocumentPath, MongoDb};
+
+use super::AbstractWebhooks;
+
+static COL: &str = "channel_webhooks";
+
+#[async_trait]
+impl AbstractWebhooks for MongoDb {
+    /// Insert new webhook into the database
+    async fn insert_webhook(&self, webhook: &Webhook) -> Result<()> {
+        query!(self, insert_one, COL, &webhook).map(|_| ())
+    }
+
+    /// Fetch webhook by id
+    async fn fetch_webhook(&self, webhook_id: &str) -> Result<Webhook> {
+        query!(self, find_one_by_id, COL, webhook_id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch webhooks for channel
+    async fn fetch_webhooks_for_channel(&self, channel_id: &str) -> Result<Vec<Webhook>> {
+        Ok(self
+            .col::<Webhook>(COL)
+            .find(
+                doc! {
+                    "channel_id": channel_id,
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Update webhook with new information
+    async fn update_webhook(
+        &self,
+        webhook_id: &str,
+        partial: &PartialWebhook,
+        remove: &[FieldsWebhook],
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            webhook_id,
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    /// Delete webhook by id
+    async fn delete_webhook(&self, webhook_id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, webhook_id).map(|_| ())
+    }
+}
+
+impl IntoDocumentPath for FieldsWebhook {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsWebhook::Avatar => "avatar",
+        })
+    }
+}

crates/core/database/src/models/channel_webhooks/ops/reference.rs

@@ -0,0 +1,70 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{FieldsWebhook, PartialWebhook, Webhook};
+
+use super::AbstractWebhooks;
+
+#[async_trait]
+impl AbstractWebhooks for ReferenceDb {
+    /// Insert new webhook into the database
+    async fn insert_webhook(&self, webhook: &Webhook) -> Result<()> {
+        let mut webhooks = self.channel_webhooks.lock().await;
+        if webhooks.contains_key(&webhook.id) {
+            Err(create_database_error!("insert", "webhook"))
+        } else {
+            webhooks.insert(webhook.id.to_string(), webhook.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch webhook by id
+    async fn fetch_webhook(&self, webhook_id: &str) -> Result<Webhook> {
+        let webhooks = self.channel_webhooks.lock().await;
+        webhooks
+            .get(webhook_id)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch webhooks for channel
+    async fn fetch_webhooks_for_channel(&self, channel_id: &str) -> Result<Vec<Webhook>> {
+        let webhooks = self.channel_webhooks.lock().await;
+        Ok(webhooks
+            .values()
+            .filter(|webhook| webhook.channel_id == channel_id)
+            .cloned()
+            .collect())
+    }
+
+    /// Update webhook with new information
+    async fn update_webhook(
+        &self,
+        webhook_id: &str,
+        partial: &PartialWebhook,
+        remove: &[FieldsWebhook],
+    ) -> Result<()> {
+        let mut webhooks = self.channel_webhooks.lock().await;
+        if let Some(webhook) = webhooks.get_mut(webhook_id) {
+            for field in remove {
+                #[allow(clippy::disallowed_methods)]
+                webhook.remove_field(field);
+            }
+
+            webhook.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete webhook by id
+    async fn delete_webhook(&self, webhook_id: &str) -> Result<()> {
+        let mut webhooks = self.channel_webhooks.lock().await;
+        if webhooks.remove(webhook_id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/channels/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/channels/model.rs

@@ -0,0 +1,529 @@
+use std::collections::HashMap;
+
+use revolt_permissions::OverrideField;
+use revolt_result::Result;
+use serde::{Deserialize, Serialize};
+
+use crate::{events::client::EventV1, Database, File, IntoDocumentPath};
+
+auto_derived!(
+    pub enum Channel {
+        /// Personal "Saved Notes" channel which allows users to save messages
+        SavedMessages {
+            /// Unique Id
+            #[serde(rename = "_id")]
+            id: String,
+            /// Id of the user this channel belongs to
+            user: String,
+        },
+        /// Direct message channel between two users
+        DirectMessage {
+            /// Unique Id
+            #[serde(rename = "_id")]
+            id: String,
+
+            /// Whether this direct message channel is currently open on both sides
+            active: bool,
+            /// 2-tuple of user ids participating in direct message
+            recipients: Vec<String>,
+            /// Id of the last message sent in this channel
+            #[serde(skip_serializing_if = "Option::is_none")]
+            last_message_id: Option<String>,
+        },
+        /// Group channel between 1 or more participants
+        Group {
+            /// Unique Id
+            #[serde(rename = "_id")]
+            id: String,
+
+            /// Display name of the channel
+            name: String,
+            /// User id of the owner of the group
+            owner: String,
+            /// Channel description
+            #[serde(skip_serializing_if = "Option::is_none")]
+            description: Option<String>,
+            /// Array of user ids participating in channel
+            recipients: Vec<String>,
+
+            /// Custom icon attachment
+            #[serde(skip_serializing_if = "Option::is_none")]
+            icon: Option<File>,
+            /// Id of the last message sent in this channel
+            #[serde(skip_serializing_if = "Option::is_none")]
+            last_message_id: Option<String>,
+
+            /// Permissions assigned to members of this group
+            /// (does not apply to the owner of the group)
+            #[serde(skip_serializing_if = "Option::is_none")]
+            permissions: Option<i64>,
+
+            /// Whether this group is marked as not safe for work
+            #[serde(skip_serializing_if = "crate::if_false", default)]
+            nsfw: bool,
+        },
+        /// Text channel belonging to a server
+        TextChannel {
+            /// Unique Id
+            #[serde(rename = "_id")]
+            id: String,
+            /// Id of the server this channel belongs to
+            server: String,
+
+            /// Display name of the channel
+            name: String,
+            /// Channel description
+            #[serde(skip_serializing_if = "Option::is_none")]
+            description: Option<String>,
+
+            /// Custom icon attachment
+            #[serde(skip_serializing_if = "Option::is_none")]
+            icon: Option<File>,
+            /// Id of the last message sent in this channel
+            #[serde(skip_serializing_if = "Option::is_none")]
+            last_message_id: Option<String>,
+
+            /// Default permissions assigned to users in this channel
+            #[serde(skip_serializing_if = "Option::is_none")]
+            default_permissions: Option<OverrideField>,
+            /// Permissions assigned based on role to this channel
+            #[serde(
+                default = "HashMap::<String, OverrideField>::new",
+                skip_serializing_if = "HashMap::<String, OverrideField>::is_empty"
+            )]
+            role_permissions: HashMap<String, OverrideField>,
+
+            /// Whether this channel is marked as not safe for work
+            #[serde(skip_serializing_if = "crate::if_false", default)]
+            nsfw: bool,
+        },
+        /// Voice channel belonging to a server
+        VoiceChannel {
+            /// Unique Id
+            #[serde(rename = "_id")]
+            id: String,
+            /// Id of the server this channel belongs to
+            server: String,
+
+            /// Display name of the channel
+            name: String,
+            #[serde(skip_serializing_if = "Option::is_none")]
+            /// Channel description
+            description: Option<String>,
+            /// Custom icon attachment
+            #[serde(skip_serializing_if = "Option::is_none")]
+            icon: Option<File>,
+
+            /// Default permissions assigned to users in this channel
+            #[serde(skip_serializing_if = "Option::is_none")]
+            default_permissions: Option<OverrideField>,
+            /// Permissions assigned based on role to this channel
+            #[serde(
+                default = "HashMap::<String, OverrideField>::new",
+                skip_serializing_if = "HashMap::<String, OverrideField>::is_empty"
+            )]
+            role_permissions: HashMap<String, OverrideField>,
+
+            /// Whether this channel is marked as not safe for work
+            #[serde(skip_serializing_if = "crate::if_false", default)]
+            nsfw: bool,
+        },
+    }
+);
+
+auto_derived!(
+    #[derive(Default)]
+    pub struct PartialChannel {
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub name: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub owner: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub description: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub icon: Option<File>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub nsfw: Option<bool>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub active: Option<bool>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub permissions: Option<i64>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub role_permissions: Option<HashMap<String, OverrideField>>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub default_permissions: Option<OverrideField>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub last_message_id: Option<String>,
+    }
+
+    /// Optional fields on channel object
+    pub enum FieldsChannel {
+        Description,
+        Icon,
+        DefaultPermissions,
+    }
+);
+
+impl Channel {
+    /// Create a channel
+    pub async fn create(&self, db: &Database) -> Result<()> {
+        db.insert_channel(self).await?;
+
+        Ok(())
+    }
+
+    /// Add user to a group
+    pub async fn add_user_to_group(
+        &mut self,
+        db: &Database,
+        user_id: &str,
+        _by_id: &str,
+    ) -> Result<()> {
+        if let Channel::Group { recipients, .. } = self {
+            if recipients.contains(&String::from(user_id)) {
+                return Err(create_error!(AlreadyInGroup));
+            }
+
+            recipients.push(String::from(user_id));
+        }
+
+        match &self {
+            Channel::Group { id, .. } => {
+                db.add_user_to_group(id, user_id).await?;
+
+                EventV1::ChannelGroupJoin {
+                    id: id.to_string(),
+                    user: user_id.to_string(),
+                }
+                .p(id.to_string())
+                .await;
+
+                EventV1::ChannelCreate(self.clone().into())
+                    .private(user_id.to_string())
+                    .await;
+
+                /* TODO: SystemMessage::UserAdded {
+                    id: user.to_string(),
+                    by: by.to_string(),
+                }
+                .into_message(id.to_string())
+                .create(db, self, None)
+                .await
+                .ok(); */
+
+                Ok(())
+            }
+            _ => Err(create_error!(InvalidOperation)),
+        }
+    }
+
+    /// Map out whether it is a direct DM
+    pub fn is_direct_dm(&self) -> bool {
+        matches!(self, Channel::DirectMessage { .. })
+    }
+
+    /// Check whether has a user as a recipient
+    pub fn contains_user(&self, user_id: &str) -> bool {
+        match self {
+            Channel::Group { recipients, .. } => recipients.contains(&String::from(user_id)),
+            _ => false,
+        }
+    }
+
+    /// Get list of recipients
+    pub fn users(&self) -> Result<Vec<String>> {
+        match self {
+            Channel::Group { recipients, .. } => Ok(recipients.to_owned()),
+            _ => Err(create_error!(NotFound)),
+        }
+    }
+
+    /// Get a reference to this channel's id
+    pub fn id(&self) -> String {
+        match self {
+            Channel::DirectMessage { id, .. }
+            | Channel::Group { id, .. }
+            | Channel::SavedMessages { id, .. }
+            | Channel::TextChannel { id, .. }
+            | Channel::VoiceChannel { id, .. } => id.clone(),
+        }
+    }
+
+    /// Set role permission on a channel
+    pub async fn set_role_permission(
+        &mut self,
+        db: &Database,
+        role_id: &str,
+        permissions: OverrideField,
+    ) -> Result<()> {
+        match self {
+            Channel::TextChannel {
+                id,
+                server,
+                role_permissions,
+                ..
+            }
+            | Channel::VoiceChannel {
+                id,
+                server,
+                role_permissions,
+                ..
+            } => {
+                db.set_channel_role_permission(id, role_id, permissions)
+                    .await?;
+
+                role_permissions.insert(role_id.to_string(), permissions);
+
+                EventV1::ChannelUpdate {
+                    id: id.clone(),
+                    data: PartialChannel {
+                        role_permissions: Some(role_permissions.clone()),
+                        ..Default::default()
+                    }
+                    .into(),
+                    clear: vec![],
+                }
+                .p(server.clone())
+                .await;
+
+                Ok(())
+            }
+            _ => Err(create_error!(InvalidOperation)),
+        }
+    }
+
+    /// Update channel data
+    pub async fn update<'a>(
+        &mut self,
+        db: &Database,
+        partial: PartialChannel,
+        remove: Vec<FieldsChannel>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        self.apply_options(partial.clone());
+
+        db.update_channel(&self.id(), &partial, remove.clone())
+            .await?;
+
+        Ok(())
+    }
+
+    /// Remove a field from Channel object
+    pub fn remove_field(&mut self, field: &FieldsChannel) {
+        match field {
+            FieldsChannel::Description => match self {
+                Self::Group { description, .. }
+                | Self::TextChannel { description, .. }
+                | Self::VoiceChannel { description, .. } => {
+                    description.take();
+                }
+                _ => {}
+            },
+            FieldsChannel::Icon => match self {
+                Self::Group { icon, .. }
+                | Self::TextChannel { icon, .. }
+                | Self::VoiceChannel { icon, .. } => {
+                    icon.take();
+                }
+                _ => {}
+            },
+            FieldsChannel::DefaultPermissions => match self {
+                Self::TextChannel {
+                    default_permissions,
+                    ..
+                }
+                | Self::VoiceChannel {
+                    default_permissions,
+                    ..
+                } => {
+                    default_permissions.take();
+                }
+                _ => {}
+            },
+        }
+    }
+
+    /// Remove multiple fields from Channel object
+    pub fn remove_fields(&mut self, partial: Vec<FieldsChannel>) {
+        for field in partial {
+            self.remove_field(&field)
+        }
+    }
+
+    /// Apply partial channel to channel
+    pub fn apply_options(&mut self, partial: PartialChannel) {
+        match self {
+            Self::SavedMessages { .. } => {}
+            Self::DirectMessage { active, .. } => {
+                if let Some(v) = partial.active {
+                    *active = v;
+                }
+            }
+            Self::Group {
+                name,
+                owner,
+                description,
+                icon,
+                nsfw,
+                permissions,
+                ..
+            } => {
+                if let Some(v) = partial.name {
+                    *name = v;
+                }
+
+                if let Some(v) = partial.owner {
+                    *owner = v;
+                }
+
+                if let Some(v) = partial.description {
+                    description.replace(v);
+                }
+
+                if let Some(v) = partial.icon {
+                    icon.replace(v);
+                }
+
+                if let Some(v) = partial.nsfw {
+                    *nsfw = v;
+                }
+
+                if let Some(v) = partial.permissions {
+                    permissions.replace(v);
+                }
+            }
+            Self::TextChannel {
+                name,
+                description,
+                icon,
+                nsfw,
+                default_permissions,
+                role_permissions,
+                ..
+            }
+            | Self::VoiceChannel {
+                name,
+                description,
+                icon,
+                nsfw,
+                default_permissions,
+                role_permissions,
+                ..
+            } => {
+                if let Some(v) = partial.name {
+                    *name = v;
+                }
+
+                if let Some(v) = partial.description {
+                    description.replace(v);
+                }
+
+                if let Some(v) = partial.icon {
+                    icon.replace(v);
+                }
+
+                if let Some(v) = partial.nsfw {
+                    *nsfw = v;
+                }
+
+                if let Some(v) = partial.role_permissions {
+                    *role_permissions = v;
+                }
+
+                if let Some(v) = partial.default_permissions {
+                    default_permissions.replace(v);
+                }
+            }
+        }
+    }
+
+    /// Remove user from a group
+    pub async fn remove_user_from_group(
+        &self,
+        db: &Database,
+        user_id: &str,
+        _by_id: Option<&str>,
+        silent: bool,
+    ) -> Result<()> {
+        match &self {
+            Channel::Group {
+                id,
+                owner,
+                recipients,
+                ..
+            } => {
+                if user_id == owner {
+                    if let Some(new_owner) = recipients.iter().find(|x| *x != user_id) {
+                        db.update_channel(
+                            id,
+                            &PartialChannel {
+                                owner: Some(new_owner.into()),
+                                ..Default::default()
+                            },
+                            vec![],
+                        )
+                        .await?;
+
+                        /* TODO: SystemMessage::ChannelOwnershipChanged {
+                            from: owner.to_string(),
+                            to: new_owner.into(),
+                        }
+                        .into_message(id.to_string())
+                        .create(db, self, None)
+                        .await
+                        .ok(); */
+                    } else {
+                        db.delete_channel(self).await?;
+                        return Ok(());
+                    }
+                }
+
+                EventV1::ChannelGroupLeave {
+                    id: id.to_string(),
+                    user: user_id.to_string(),
+                }
+                .p(id.to_string())
+                .await;
+
+                if !silent {
+                    /* TODO: if let Some(_by) = by_id {
+                        SystemMessage::UserRemove {
+                            id: user_id.to_string(),
+                            by: by.to_string(),
+                        }
+                    } else {
+                        SystemMessage::UserLeft {
+                            id: user_id.to_string(),
+                        }
+                    }
+                    .into_message(id.to_string())
+                    .create(db, self, None)
+                    .await
+                    .ok(); */
+                }
+
+                Ok(())
+            }
+
+            _ => Err(create_error!(InvalidOperation)),
+        }
+    }
+
+    /// Delete a channel
+    pub async fn delete(&self, db: &Database) -> Result<()> {
+        db.delete_channel(self).await
+    }
+}
+
+impl IntoDocumentPath for FieldsChannel {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsChannel::Description => "description",
+            FieldsChannel::Icon => "icon",
+            FieldsChannel::DefaultPermissions => "default_permissions",
+        })
+    }
+}

crates/core/database/src/models/channels/ops.rs

@@ -0,0 +1,50 @@
+use crate::{revolt_result::Result, Channel, FieldsChannel, PartialChannel};
+use revolt_permissions::OverrideField;
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractChannels: Sync + Send {
+    /// Insert a new channel in the database
+    async fn insert_channel(&self, channel: &Channel) -> Result<()>;
+
+    /// Fetch a channel from the database
+    async fn fetch_channel(&self, channel_id: &str) -> Result<Channel>;
+
+    /// Fetch all channels from the database
+    async fn fetch_channels<'a>(&self, ids: &'a [String]) -> Result<Vec<Channel>>;
+
+    /// Fetch all direct messages for a user
+    async fn find_direct_messages(&self, user_id: &str) -> Result<Vec<Channel>>;
+
+    // Fetch saved messages channel
+    async fn find_saved_messages_channel(&self, user_id: &str) -> Result<Channel>;
+
+    // Fetch direct message channel (DM or Saved Messages)
+    async fn find_direct_message_channel(&self, user_a: &str, user_b: &str) -> Result<Channel>;
+
+    /// Insert a user to a group
+    async fn add_user_to_group(&self, channel_id: &str, user_id: &str) -> Result<()>;
+
+    /// Insert channel role permissions
+    async fn set_channel_role_permission(
+        &self,
+        channel_id: &str,
+        role_id: &str,
+        permissions: OverrideField,
+    ) -> Result<()>;
+
+    // Update channel
+    async fn update_channel(
+        &self,
+        id: &str,
+        channel_id: &PartialChannel,
+        remove: Vec<FieldsChannel>,
+    ) -> Result<()>;
+
+    // Remove a user from a group
+    async fn remove_user_from_group(&self, channel_id: &str, user_id: &str) -> Result<()>;
+
+    // Delete a channel
+    async fn delete_channel(&self, channel_id: &Channel) -> Result<()>;
+}

crates/core/database/src/models/channels/ops/mongodb.rs

@@ -0,0 +1,193 @@
+use super::AbstractChannels;
+use crate::{Channel, FieldsChannel, IntoDocumentPath, MongoDb, PartialChannel};
+use bson::Document;
+use futures::StreamExt;
+use revolt_permissions::OverrideField;
+use revolt_result::Result;
+
+static COL: &str = "channels";
+
+#[async_trait]
+impl AbstractChannels for MongoDb {
+    /// Insert a new channel in the database
+    async fn insert_channel(&self, channel: &Channel) -> Result<()> {
+        query!(self, insert_one, COL, &channel).map(|_| ())
+    }
+
+    /// Fetch a channel from the database
+    async fn fetch_channel(&self, channel_id: &str) -> Result<Channel> {
+        query!(self, find_one_by_id, COL, channel_id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch all channels from the database
+    async fn fetch_channels<'a>(&self, ids: &'a [String]) -> Result<Vec<Channel>> {
+        Ok(self
+            .col::<Channel>(COL)
+            .find(
+                doc! {
+                    "_id": {
+                        "$in": ids
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("fetch", "channels"))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Fetch all direct messages for a user
+    async fn find_direct_messages(&self, user_id: &str) -> Result<Vec<Channel>> {
+        query!(
+            self,
+            find,
+            COL,
+            doc! {
+                "$or": [
+                    {
+                        "$or": [
+                            {
+                                "channel_type": "DirectMessage"
+                            },
+                            {
+                                "channel_type": "Group"
+                            }
+                        ],
+                        "recipients": user_id
+                    },
+                    {
+                        "channel_type": "SavedMessages",
+                        "user": user_id
+                    }
+                ]
+            }
+        )
+    }
+
+    // Fetch saved messages channel
+    async fn find_saved_messages_channel(&self, user_id: &str) -> Result<Channel> {
+        query!(
+            self,
+            find_one,
+            COL,
+            doc! {
+                "channel_type": "SavedMessages",
+                "user": user_id
+            }
+        )?
+        .ok_or_else(|| create_error!(InternalError))
+    }
+
+    // Fetch direct message channel (DM or Saved Messages)
+    async fn find_direct_message_channel(&self, user_a: &str, user_b: &str) -> Result<Channel> {
+        let doc = match (user_a, user_b) {
+            self_user if self_user.0 == self_user.1 => {
+                doc! {
+                    "channel_type": "SavedMessages",
+                    "user": self_user.0
+                }
+            }
+            users => {
+                doc! {
+                    "channel_type": "DirectMessage",
+                    "recipients": {
+                        "$all": [ users.0, users.1 ]
+                    }
+                }
+            }
+        };
+        query!(self, find_one, COL, doc)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Insert a user to a group
+    async fn add_user_to_group(&self, channel: &str, user: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": channel
+                },
+                doc! {
+                    "$push": {
+                        "recipients": user
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "channel"))
+    }
+
+    /// Insert channel role permissions
+    async fn set_channel_role_permission(
+        &self,
+        channel: &str,
+        role: &str,
+        permissions: OverrideField,
+    ) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! { "_id": channel },
+                doc! {
+                "$set": {
+                    "role_permissions.".to_owned() + role: permissions
+                }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "channel"))
+    }
+
+    // Update channel
+    async fn update_channel(
+        &self,
+        id: &str,
+        channel: &PartialChannel,
+        remove: Vec<FieldsChannel>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            id,
+            channel,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    // Remove a user from a group
+    async fn remove_user_from_group(&self, channel: &str, user: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": channel
+                },
+                doc! {
+                    "$pull": {
+                        "recipients": user
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "channels"))
+    }
+
+    // Delete a channel
+    async fn delete_channel(&self, channel: &Channel) -> Result<()> {
+        query!(self, delete_one_by_id, COL, &channel.id()).map(|_| ())
+    }
+}

crates/core/database/src/models/channels/ops/reference.rs

@@ -0,0 +1,157 @@
+use std::collections::hash_map::Entry;
+
+use super::AbstractChannels;
+use crate::ReferenceDb;
+use crate::{Channel, FieldsChannel, PartialChannel};
+use revolt_permissions::OverrideField;
+use revolt_result::Result;
+
+#[async_trait]
+impl AbstractChannels for ReferenceDb {
+    /// Insert a new channel in the database
+    async fn insert_channel(&self, channel: &Channel) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+        if let Entry::Vacant(entry) = channels.entry(channel.id()) {
+            entry.insert(channel.clone());
+            Ok(())
+        } else {
+            Err(create_database_error!("insert", "channel"))
+        }
+    }
+
+    /// Fetch a channel from the database
+    async fn fetch_channel(&self, channel_id: &str) -> Result<Channel> {
+        let channels = self.channels.lock().await;
+        channels
+            .get(channel_id)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch all channels from the database
+    async fn fetch_channels<'a>(&self, ids: &'a [String]) -> Result<Vec<Channel>> {
+        let channels = self.channels.lock().await;
+        ids.iter()
+            .map(|id| {
+                channels
+                    .get(id)
+                    .cloned()
+                    .ok_or_else(|| create_error!(NotFound))
+            })
+            .collect()
+    }
+
+    /// Fetch all direct messages for a user
+    async fn find_direct_messages(&self, user_id: &str) -> Result<Vec<Channel>> {
+        let channels = self.channels.lock().await;
+        Ok(channels
+            .values()
+            .filter(|channel| channel.contains_user(user_id))
+            .cloned()
+            .collect())
+    }
+
+    // Fetch saved messages channel
+    async fn find_saved_messages_channel(&self, user_id: &str) -> Result<Channel> {
+        let channels = self.channels.lock().await;
+        channels
+            .get(user_id)
+            .cloned()
+            .ok_or_else(|| create_database_error!("fetch", "channel"))
+    }
+
+    // Fetch direct message channel (DM or Saved Messages)
+    async fn find_direct_message_channel(&self, user_a: &str, user_b: &str) -> Result<Channel> {
+        let channels = self.channels.lock().await;
+        for (_, data) in channels.iter() {
+            if data.contains_user(user_a) && data.contains_user(user_b) {
+                return Ok(data.to_owned());
+            }
+        }
+        Err(create_error!(NotFound))
+    }
+    /// Insert a user to a group
+    async fn add_user_to_group(&self, channel_id: &str, user_id: &str) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+
+        if let Some(Channel::Group { recipients, .. }) = channels.get_mut(channel_id) {
+            recipients.push(String::from(user_id));
+            Ok(())
+        } else {
+            Err(create_error!(InvalidOperation))
+        }
+    }
+    /// Insert channel role permissions
+    async fn set_channel_role_permission(
+        &self,
+        channel_id: &str,
+        role_id: &str,
+        permissions: OverrideField,
+    ) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+
+        if let Some(mut channel) = channels.get_mut(channel_id) {
+            match &mut channel {
+                Channel::TextChannel {
+                    role_permissions, ..
+                }
+                | Channel::VoiceChannel {
+                    role_permissions, ..
+                } => {
+                    if role_permissions.get(role_id).is_some() {
+                        role_permissions.remove(role_id);
+                        role_permissions.insert(String::from(role_id), permissions);
+
+                        Ok(())
+                    } else {
+                        Err(create_error!(NotFound))
+                    }
+                }
+                _ => Err(create_error!(NotFound)),
+            }
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    // Update channel
+    async fn update_channel(
+        &self,
+        id: &str,
+        channel: &PartialChannel,
+        remove: Vec<FieldsChannel>,
+    ) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+        if let Some(channel_data) = channels.get_mut(id) {
+            channel_data.apply_options(channel.to_owned());
+            channel_data.remove_fields(remove);
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    // Remove a user from a group
+    async fn remove_user_from_group(&self, channel: &str, user: &str) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+        if let Some(channel_data) = channels.get_mut(channel) {
+            if channel_data.users()?.contains(&String::from(user)) {
+                channel_data.users()?.retain(|x| x != user);
+                return Ok(());
+            } else {
+                return Err(create_error!(NotFound));
+            }
+        }
+        Err(create_error!(NotFound))
+    }
+
+    // Delete a channel
+    async fn delete_channel(&self, channel: &Channel) -> Result<()> {
+        let mut channels = self.channels.lock().await;
+        if channels.remove(&channel.id()).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/files/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/files/model.rs

@@ -0,0 +1,107 @@
+use crate::Database;
+
+use revolt_result::Result;
+
+auto_derived_partial!(
+    /// File
+    pub struct File {
+        /// Unique Id
+        #[serde(rename = "_id")]
+        pub id: String,
+        /// Tag / bucket this file was uploaded to
+        pub tag: String,
+        /// Original filename
+        pub filename: String,
+        /// Parsed metadata of this file
+        pub metadata: Metadata,
+        /// Raw content type of this file
+        pub content_type: String,
+        /// Size of this file (in bytes)
+        pub size: isize,
+
+        /// Whether this file was deleted
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub deleted: Option<bool>,
+        /// Whether this file was reported
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub reported: Option<bool>,
+
+        // TODO: migrate this mess to having:
+        // - author_id
+        // - parent: Parent { Message(id), User(id), etc }
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub message_id: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub user_id: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub server_id: Option<String>,
+
+        /// Id of the object this file is associated with
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub object_id: Option<String>,
+    },
+    "PartialFile"
+);
+
+auto_derived!(
+    /// Metadata associated with a file
+    #[serde(tag = "type")]
+    #[derive(Default)]
+    pub enum Metadata {
+        /// File is just a generic uncategorised file
+        #[default]
+        File,
+        /// File contains textual data and should be displayed as such
+        Text,
+        /// File is an image with specific dimensions
+        Image { width: isize, height: isize },
+        /// File is a video with specific dimensions
+        Video { width: isize, height: isize },
+        /// File is audio
+        Audio,
+    }
+);
+
+impl File {
+    /// Use a file for a message attachment
+    pub async fn use_attachment(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "attachments", "message", parent)
+            .await
+    }
+
+    /// Use a file for a user profile background
+    pub async fn use_background(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "backgrounds", "user", parent)
+            .await
+    }
+
+    /// Use a file for a user avatar
+    pub async fn use_avatar(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "avatars", "user", parent)
+            .await
+    }
+
+    /// Use a file for an icon
+    pub async fn use_icon(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "icons", "object", parent)
+            .await
+    }
+
+    /// Use a file for a server icon
+    pub async fn use_server_icon(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "icons", "object", parent)
+            .await
+    }
+
+    /// Use a file for a server banner
+    pub async fn use_banner(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "banners", "server", parent)
+            .await
+    }
+
+    /// Use a file for an emoji
+    pub async fn use_emoji(db: &Database, id: &str, parent: &str) -> Result<File> {
+        db.find_and_use_attachment(id, "emojis", "object", parent)
+            .await
+    }
+}

crates/core/database/src/models/files/ops.rs

@@ -0,0 +1,30 @@
+use revolt_result::Result;
+
+use crate::File;
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractAttachments: Sync + Send {
+    /// Insert attachment into database.
+    async fn insert_attachment(&self, attachment: &File) -> Result<()>;
+
+    /// Find an attachment by its details and mark it as used by a given parent.
+    async fn find_and_use_attachment(
+        &self,
+        id: &str,
+        tag: &str,
+        parent_type: &str,
+        parent_id: &str,
+    ) -> Result<File>;
+
+    /// Mark an attachment as having been reported.
+    async fn mark_attachment_as_reported(&self, id: &str) -> Result<()>;
+
+    /// Mark an attachment as having been deleted.
+    async fn mark_attachment_as_deleted(&self, id: &str) -> Result<()>;
+
+    /// Mark multiple attachments as having been deleted.
+    async fn mark_attachments_as_deleted(&self, ids: &[String]) -> Result<()>;
+}

crates/core/database/src/models/files/ops/mongodb.rs

@@ -0,0 +1,117 @@
+use bson::Document;
+use revolt_result::Result;
+
+use crate::File;
+use crate::MongoDb;
+
+use super::AbstractAttachments;
+
+static COL: &str = "bots";
+
+#[async_trait]
+impl AbstractAttachments for MongoDb {
+    /// Insert attachment into database.
+    async fn insert_attachment(&self, attachment: &File) -> Result<()> {
+        query!(self, insert_one, COL, &attachment).map(|_| ())
+    }
+
+    /// Find an attachment by its details and mark it as used by a given parent.
+    async fn find_and_use_attachment(
+        &self,
+        id: &str,
+        tag: &str,
+        parent_type: &str,
+        parent_id: &str,
+    ) -> Result<File> {
+        let key = format!("{parent_type}_id");
+        let file = query!(
+            self,
+            find_one,
+            COL,
+            doc! {
+                "_id": id,
+                "tag": tag,
+                &key: {
+                    "$exists": false
+                }
+            }
+        )?
+        .ok_or_else(|| create_error!(NotFound))?;
+
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$set": {
+                        key: parent_id
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("update_one", COL))?;
+
+        Ok(file)
+    }
+
+    /// Mark an attachment as having been reported.
+    async fn mark_attachment_as_reported(&self, id: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$set": {
+                        "reported": true
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", COL))
+    }
+
+    /// Mark an attachment as having been deleted.
+    async fn mark_attachment_as_deleted(&self, id: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$set": {
+                        "deleted": true
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", COL))
+    }
+
+    /// Mark multiple attachments as having been deleted.
+    async fn mark_attachments_as_deleted(&self, ids: &[String]) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": {
+                        "$in": ids
+                    }
+                },
+                doc! {
+                    "$set": {
+                        "deleted": true
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", COL))
+    }
+}

crates/core/database/src/models/files/ops/reference.rs

@@ -0,0 +1,79 @@
+use revolt_result::Result;
+
+use crate::File;
+use crate::ReferenceDb;
+
+use super::AbstractAttachments;
+
+#[async_trait]
+impl AbstractAttachments for ReferenceDb {
+    /// Insert attachment into database.
+    async fn insert_attachment(&self, attachment: &File) -> Result<()> {
+        let mut attachments = self.files.lock().await;
+        if attachments.contains_key(&attachment.id) {
+            Err(create_database_error!("insert", "attachment"))
+        } else {
+            attachments.insert(attachment.id.to_string(), attachment.clone());
+            Ok(())
+        }
+    }
+
+    /// Find an attachment by its details and mark it as used by a given parent.
+    async fn find_and_use_attachment(
+        &self,
+        id: &str,
+        _tag: &str,
+        _parent_type: &str,
+        _parent_id: &str,
+    ) -> Result<File> {
+        let mut files = self.files.lock().await;
+        if let Some(file) = files.get_mut(id) {
+            // TODO: check tag
+            // TODO: set parent ID
+            Ok(file.clone())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Mark an attachment as having been reported.
+    async fn mark_attachment_as_reported(&self, id: &str) -> Result<()> {
+        let mut files = self.files.lock().await;
+        if let Some(file) = files.get_mut(id) {
+            file.reported = Some(true);
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Mark an attachment as having been deleted.
+    async fn mark_attachment_as_deleted(&self, id: &str) -> Result<()> {
+        let mut files = self.files.lock().await;
+        if let Some(file) = files.get_mut(id) {
+            file.deleted = Some(true);
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Mark multiple attachments as having been deleted.
+    async fn mark_attachments_as_deleted(&self, ids: &[String]) -> Result<()> {
+        let mut files = self.files.lock().await;
+
+        for id in ids {
+            if !files.contains_key(id) {
+                return Err(create_error!(NotFound));
+            }
+        }
+
+        for id in ids {
+            if let Some(file) = files.get_mut(id) {
+                file.reported = Some(true);
+            }
+        }
+
+        Ok(())
+    }
+}

crates/core/database/src/models/mod.rs

@@ -0,0 +1,53 @@
+mod admin_migrations;
+mod bots;
+mod channel_webhooks;
+mod channels;
+mod files;
+mod safety_strikes;
+mod server_members;
+mod servers;
+mod user_settings;
+mod users;
+
+pub use admin_migrations::*;
+pub use bots::*;
+pub use channel_webhooks::*;
+pub use channels::*;
+pub use files::*;
+pub use safety_strikes::*;
+pub use server_members::*;
+pub use servers::*;
+pub use user_settings::*;
+pub use users::*;
+
+use crate::{Database, MongoDb, ReferenceDb};
+
+pub trait AbstractDatabase:
+    Sync
+    + Send
+    + admin_migrations::AbstractMigrations
+    + bots::AbstractBots
+    + channels::AbstractChannels
+    + channel_webhooks::AbstractWebhooks
+    + files::AbstractAttachments
+    + safety_strikes::AbstractAccountStrikes
+    + server_members::AbstractServerMembers
+    + servers::AbstractServers
+    + user_settings::AbstractUserSettings
+    + users::AbstractUsers
+{
+}
+
+impl AbstractDatabase for ReferenceDb {}
+impl AbstractDatabase for MongoDb {}
+
+impl std::ops::Deref for Database {
+    type Target = dyn AbstractDatabase;
+
+    fn deref(&self) -> &Self::Target {
+        match &self {
+            Database::Reference(dummy) => dummy,
+            Database::MongoDb(mongo) => mongo,
+        }
+    }
+}

crates/core/database/src/models/relations.drawio

@@ -0,0 +1,218 @@
+<mxfile host="65bd71144e">
+    <diagram id="9BKyaxnbqnTkbfLuLd1z" name="Page-1">
+        <mxGraphModel dx="2466" dy="650" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+            <root>
+                <mxCell id="0"/>
+                <mxCell id="1" parent="0"/>
+                <mxCell id="56" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;strokeColor=#B3B3B3;dashed=1;" parent="1" source="2" target="6" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="57" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.75;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;strokeColor=#B3B3B3;dashed=1;" parent="1" source="2" target="5" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="260" y="370"/>
+                            <mxPoint x="275" y="370"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="58" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.25;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;strokeColor=#B3B3B3;dashed=1;" parent="1" source="2" target="9" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="260" y="370"/>
+                            <mxPoint x="342" y="370"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="59" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;strokeColor=#B3B3B3;dashed=1;" parent="1" source="2" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="300" y="250" as="targetPoint"/>
+                        <Array as="points">
+                            <mxPoint x="260" y="370"/>
+                            <mxPoint x="300" y="370"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="2" value="Attachment" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="220" y="490" width="80" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="51" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;entryX=0.25;entryY=1;entryDx=0;entryDy=0;" parent="1" source="3" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="290" y="160" as="targetPoint"/>
+                        <Array as="points">
+                            <mxPoint x="95" y="340"/>
+                            <mxPoint x="195" y="340"/>
+                            <mxPoint x="195" y="260"/>
+                            <mxPoint x="260" y="260"/>
+                            <mxPoint x="260" y="220"/>
+                            <mxPoint x="290" y="220"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="68" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.25;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" edge="1" parent="1" source="3" target="5">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="95" y="340"/>
+                            <mxPoint x="245" y="340"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="3" value="Channel Invite" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="50" y="400" width="90" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="4" value="Channel Unread" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="-70" y="400" width="100" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="43" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.25;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;dashed=1;" parent="1" source="5" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="60" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;dashed=1;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;strokeColor=#FFFFFF;" parent="1" source="5" target="9" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="67" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.25;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;endArrow=none;endFill=0;startArrow=diamondThin;startFill=1;" edge="1" parent="1" source="5" target="66">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="245" y="370"/>
+                            <mxPoint x="195" y="370"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="5" value="Channel" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="230" y="280" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="45" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.75;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="6" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="46" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="6" target="5" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="310" y="355"/>
+                            <mxPoint x="260" y="355"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="6" value="Message" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="280" y="400" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="54" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="7" target="9" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="505" y="350"/>
+                            <mxPoint x="355" y="350"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="7" value="Server Ban" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="470" y="400" width="70" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="47" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="8" target="9" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="405" y="350"/>
+                            <mxPoint x="355" y="350"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="48" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.75;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="8" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="405" y="350"/>
+                            <mxPoint x="310" y="350"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="8" value="Server Member" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="360" y="400" width="90" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="29" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;endArrow=diamondThin;endFill=1;startArrow=diamondThin;startFill=1;" parent="1" source="10" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="240" y="145"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="10" value="Bot" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="200" y="130" width="40" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="31" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.25;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="11" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="11" value="User Settings" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="150" y="210" width="90" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="15" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;endArrow=diamondThin;endFill=1;" parent="1" source="12" target="13" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="12" value="User" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="280" y="130" width="40" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="13" value="Account" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="310" y="40" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="17" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;endArrow=diamondThin;endFill=1;" parent="1" source="14" target="13" edge="1">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="14" value="Session" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="350" y="130" width="60" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="44" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;entryX=0.75;entryY=1;entryDx=0;entryDy=0;" parent="1" source="9" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="310" y="160" as="targetPoint"/>
+                        <Array as="points">
+                            <mxPoint x="355" y="220"/>
+                            <mxPoint x="310" y="220"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="9" value="Server" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="330" y="280" width="50" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="55" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;" parent="1" source="4" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="290" y="160" as="targetPoint"/>
+                        <mxPoint x="200" y="400" as="sourcePoint"/>
+                        <Array as="points">
+                            <mxPoint x="-20" y="340"/>
+                            <mxPoint x="195" y="340"/>
+                            <mxPoint x="195" y="260"/>
+                            <mxPoint x="260" y="260"/>
+                            <mxPoint x="260" y="220"/>
+                            <mxPoint x="290" y="220"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="63" value="" style="edgeStyle=orthogonalEdgeStyle;html=1;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;strokeColor=#FFFFFF;entryX=1;entryY=1;entryDx=0;entryDy=0;" parent="1" source="61" target="12" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="584.25" y="335" as="targetPoint"/>
+                        <Array as="points">
+                            <mxPoint x="584" y="340"/>
+                            <mxPoint x="390" y="340"/>
+                            <mxPoint x="390" y="210"/>
+                            <mxPoint x="320" y="210"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="64" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.75;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=1;strokeColor=#FFFFFF;" parent="1" source="61" target="9" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <Array as="points">
+                            <mxPoint x="584" y="340"/>
+                            <mxPoint x="368" y="340"/>
+                            <mxPoint x="368" y="310"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="61" value="Emoji" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">
+                    <mxGeometry x="558.5" y="400" width="51.5" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="65" style="edgeStyle=orthogonalEdgeStyle;html=1;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;startArrow=none;startFill=0;endArrow=diamondThin;endFill=0;strokeColor=#B3B3B3;dashed=1;" parent="1" source="2" target="61" edge="1">
+                    <mxGeometry relative="1" as="geometry">
+                        <mxPoint x="270" y="500" as="sourcePoint"/>
+                        <mxPoint x="320" y="440" as="targetPoint"/>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="66" value="Webhook" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="160" y="400" width="70" height="30" as="geometry"/>
+                </mxCell>
+            </root>
+        </mxGraphModel>
+    </diagram>
+</mxfile>

crates/core/database/src/models/safety_strikes/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/safety_strikes/model.rs

@@ -0,0 +1,124 @@
+use revolt_result::Result;
+
+use crate::Database;
+
+auto_derived_partial!(
+    /// Account Strike
+    pub struct AccountStrike {
+        /// Strike Id
+        #[serde(rename = "_id")]
+        pub id: String,
+        /// Id of reported user
+        pub user_id: String,
+        /// Id of moderator
+        pub moderator_id: String,
+
+        /// Attached reason
+        pub reason: String,
+    },
+    "PartialAccountStrike"
+);
+
+#[allow(clippy::disallowed_methods)]
+impl AccountStrike {
+    pub async fn create(
+        db: &Database,
+        user_id: String,
+        reason: String,
+        moderator_id: String,
+    ) -> Result<AccountStrike> {
+        let strike = AccountStrike {
+            id: ulid::Ulid::new().to_string(),
+            user_id,
+            moderator_id,
+            reason,
+        };
+
+        db.insert_account_strike(&strike).await?;
+        Ok(strike)
+    }
+
+    /// Update this strike
+    pub async fn update(&mut self, db: &Database, partial: PartialAccountStrike) -> Result<()> {
+        db.update_account_strike(&self.id, &partial).await?;
+        self.apply_options(partial);
+        Ok(())
+    }
+
+    /// Delete this strike
+    pub async fn delete(&self, db: &Database) -> Result<()> {
+        db.delete_account_strike(&self.id).await
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::collections::HashSet;
+
+    use crate::{AccountStrike, PartialAccountStrike};
+
+    #[async_std::test]
+    async fn crud() {
+        database_test!(|db| async move {
+            let user_id = "user";
+
+            let strike = AccountStrike::create(
+                &db,
+                user_id.to_string(),
+                "reason 1".to_string(),
+                "moderator_id".to_string(),
+            )
+            .await
+            .unwrap();
+
+            let mut updated_strike = strike.clone();
+            updated_strike
+                .update(
+                    &db,
+                    PartialAccountStrike {
+                        reason: Some("new reason".to_string()),
+                        ..Default::default()
+                    },
+                )
+                .await
+                .unwrap();
+
+            let strike2 = AccountStrike::create(
+                &db,
+                user_id.to_string(),
+                "reason 2".to_string(),
+                "moderator_id".to_string(),
+            )
+            .await
+            .unwrap();
+
+            let strikes = db.fetch_account_strikes_by_user(user_id).await.unwrap();
+
+            let ids = strikes
+                .iter()
+                .cloned()
+                .map(|strike| strike.id)
+                .collect::<HashSet<String>>();
+
+            assert!(ids.contains(&strike.id));
+            assert!(ids.contains(&strike2.id));
+
+            let fetched_strike = strikes
+                .into_iter()
+                .find(|entry| entry.id == strike.id)
+                .unwrap();
+
+            assert_eq!(fetched_strike, updated_strike);
+            assert_ne!(fetched_strike, strike);
+
+            strike.delete(&db).await.unwrap();
+            assert_eq!(
+                1,
+                db.fetch_account_strikes_by_user(user_id)
+                    .await
+                    .unwrap()
+                    .len()
+            )
+        });
+    }
+}

crates/core/database/src/models/safety_strikes/ops.rs

@@ -0,0 +1,24 @@
+use revolt_result::Result;
+
+use crate::{AccountStrike, PartialAccountStrike};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractAccountStrikes: Sync + Send {
+    /// Insert new strike into the database
+    async fn insert_account_strike(&self, strike: &AccountStrike) -> Result<()>;
+
+    /// Fetch strike by id
+    async fn fetch_account_strike(&self, id: &str) -> Result<AccountStrike>;
+
+    /// Fetch strikes by user id
+    async fn fetch_account_strikes_by_user(&self, user_id: &str) -> Result<Vec<AccountStrike>>;
+
+    /// Update strike with new information
+    async fn update_account_strike(&self, id: &str, partial: &PartialAccountStrike) -> Result<()>;
+
+    /// Delete a strike from the database
+    async fn delete_account_strike(&self, id: &str) -> Result<()>;
+}

crates/core/database/src/models/safety_strikes/ops/mongodb.rs

@@ -0,0 +1,55 @@
+use futures::StreamExt;
+use revolt_result::Result;
+
+use crate::MongoDb;
+use crate::{AccountStrike, PartialAccountStrike};
+
+use super::AbstractAccountStrikes;
+
+static COL: &str = "safety_strikes";
+
+#[async_trait]
+impl AbstractAccountStrikes for MongoDb {
+    /// Insert new strike into the database
+    async fn insert_account_strike(&self, strike: &AccountStrike) -> Result<()> {
+        query!(self, insert_one, COL, &strike).map(|_| ())
+    }
+
+    /// Fetch strike by id
+    async fn fetch_account_strike(&self, id: &str) -> Result<AccountStrike> {
+        query!(self, find_one_by_id, COL, id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch strikes by user id
+    async fn fetch_account_strikes_by_user(&self, user_id: &str) -> Result<Vec<AccountStrike>> {
+        Ok(self
+            .col::<AccountStrike>(COL)
+            .find(
+                doc! {
+                    "user_id": user_id,
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Update strike with new information
+    async fn update_account_strike(&self, id: &str, partial: &PartialAccountStrike) -> Result<()> {
+        query!(self, update_one_by_id, COL, id, partial, vec![], None).map(|_| ())
+    }
+
+    /// Delete a strike from the database
+    async fn delete_account_strike(&self, id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, id).map(|_| ())
+    }
+}

crates/core/database/src/models/safety_strikes/ops/reference.rs

@@ -0,0 +1,60 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{AccountStrike, PartialAccountStrike};
+
+use super::AbstractAccountStrikes;
+
+#[async_trait]
+impl AbstractAccountStrikes for ReferenceDb {
+    /// Insert new strike into the database
+    async fn insert_account_strike(&self, strike: &AccountStrike) -> Result<()> {
+        let mut strikes = self.account_strikes.lock().await;
+        if strikes.contains_key(&strike.id) {
+            Err(create_database_error!("insert", "strike"))
+        } else {
+            strikes.insert(strike.id.to_string(), strike.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch strike by id
+    async fn fetch_account_strike(&self, id: &str) -> Result<AccountStrike> {
+        let strikes = self.account_strikes.lock().await;
+        strikes
+            .get(id)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch strikes by user id
+    async fn fetch_account_strikes_by_user(&self, user_id: &str) -> Result<Vec<AccountStrike>> {
+        let strikes = self.account_strikes.lock().await;
+        Ok(strikes
+            .values()
+            .filter(|strike| strike.user_id == user_id)
+            .cloned()
+            .collect())
+    }
+
+    /// Update strike with new information
+    async fn update_account_strike(&self, id: &str, partial: &PartialAccountStrike) -> Result<()> {
+        let mut strikes = self.account_strikes.lock().await;
+        if let Some(strike) = strikes.get_mut(id) {
+            strike.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete a strike from the database
+    async fn delete_account_strike(&self, id: &str) -> Result<()> {
+        let mut strikes = self.account_strikes.lock().await;
+        if strikes.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/server_members/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/server_members/model.rs

@@ -0,0 +1,118 @@
+use iso8601_timestamp::Timestamp;
+use revolt_result::Result;
+
+use crate::{Database, File, Server};
+
+auto_derived_partial!(
+    /// Server Member
+    pub struct Member {
+        /// Unique member id
+        #[serde(rename = "_id")]
+        pub id: MemberCompositeKey,
+
+        /// Time at which this user joined the server
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub joined_at: Option<Timestamp>,
+
+        /// Member's nickname
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub nickname: Option<String>,
+        /// Avatar attachment
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub avatar: Option<File>,
+
+        /// Member's roles
+        #[serde(skip_serializing_if = "Vec::is_empty", default)]
+        pub roles: Vec<String>,
+        /// Timestamp this member is timed out until
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub timeout: Option<Timestamp>,
+    },
+    "PartialMember"
+);
+
+auto_derived!(
+    /// Composite primary key consisting of server and user id
+    #[derive(Hash, Default)]
+    pub struct MemberCompositeKey {
+        /// Server Id
+        pub server: String,
+        /// User Id
+        pub user: String,
+    }
+
+    /// Optional fields on server member object
+    pub enum FieldsMember {
+        Nickname,
+        Avatar,
+        Roles,
+        Timeout,
+    }
+
+    /// Member removal intention
+    pub enum RemovalIntention {
+        Leave,
+        Kick,
+        Ban,
+    }
+);
+
+impl Member {
+    /// Update member data
+    pub async fn update<'a>(
+        &mut self,
+        db: &Database,
+        partial: PartialMember,
+        remove: Vec<FieldsMember>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        self.apply_options(partial.clone());
+
+        db.update_member(&self.id, &partial, remove.clone()).await?;
+
+        /* // TODO: EventV1::ServerMemberUpdate {
+            id: self.id.clone(),
+            data: partial,
+            clear: remove,
+        }
+        .p(self.id.server.clone())
+        .await; */
+
+        Ok(())
+    }
+
+    pub fn remove_field(&mut self, field: &FieldsMember) {
+        match field {
+            FieldsMember::Avatar => self.avatar = None,
+            FieldsMember::Nickname => self.nickname = None,
+            FieldsMember::Roles => self.roles.clear(),
+            FieldsMember::Timeout => self.timeout = None,
+        }
+    }
+
+    /// Get this user's current ranking
+    pub fn get_ranking(&self, server: &Server) -> i64 {
+        let mut value = i64::MAX;
+        for role in &self.roles {
+            if let Some(role) = server.roles.get(role) {
+                if role.rank < value {
+                    value = role.rank;
+                }
+            }
+        }
+
+        value
+    }
+
+    /// Check whether this member is in timeout
+    pub fn in_timeout(&self) -> bool {
+        if let Some(timeout) = self.timeout {
+            *timeout > *Timestamp::now_utc()
+        } else {
+            false
+        }
+    }
+}

crates/core/database/src/models/server_members/ops.rs

@@ -0,0 +1,41 @@
+use revolt_result::Result;
+
+use crate::{FieldsMember, Member, MemberCompositeKey, PartialMember};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractServerMembers: Sync + Send {
+    /// Insert a new server member into the database
+    async fn insert_member(&self, member: &Member) -> Result<()>;
+
+    /// Fetch a server member by their id
+    async fn fetch_member(&self, server_id: &str, user_id: &str) -> Result<Member>;
+
+    /// Fetch all members in a server
+    async fn fetch_all_members<'a>(&self, server_id: &str) -> Result<Vec<Member>>;
+
+    /// Fetch all memberships for a user
+    async fn fetch_all_memberships<'a>(&self, user_id: &str) -> Result<Vec<Member>>;
+
+    /// Fetch multiple members by their ids
+    async fn fetch_members<'a>(&self, server_id: &str, ids: &'a [String]) -> Result<Vec<Member>>;
+
+    /// Fetch member count of a server
+    async fn fetch_member_count(&self, server_id: &str) -> Result<usize>;
+
+    /// Fetch server count of a user
+    async fn fetch_server_count(&self, user_id: &str) -> Result<usize>;
+
+    /// Update information for a server member
+    async fn update_member(
+        &self,
+        id: &MemberCompositeKey,
+        partial: &PartialMember,
+        remove: Vec<FieldsMember>,
+    ) -> Result<()>;
+
+    /// Delete a server member by their id
+    async fn delete_member(&self, id: &MemberCompositeKey) -> Result<()>;
+}

crates/core/database/src/models/server_members/ops/mongodb.rs

@@ -0,0 +1,178 @@
+use futures::StreamExt;
+use revolt_result::Result;
+
+use crate::{FieldsMember, Member, MemberCompositeKey, PartialMember};
+use crate::{IntoDocumentPath, MongoDb};
+
+use super::AbstractServerMembers;
+
+static COL: &str = "server_members";
+
+#[async_trait]
+impl AbstractServerMembers for MongoDb {
+    /// Insert a new server member into the database
+    async fn insert_member(&self, member: &Member) -> Result<()> {
+        query!(self, insert_one, COL, &member).map(|_| ())
+    }
+
+    /// Fetch a server member by their id
+    async fn fetch_member(&self, server_id: &str, user_id: &str) -> Result<Member> {
+        query!(
+            self,
+            find_one,
+            COL,
+            doc! {
+                "_id.server": server_id,
+                "_id.user": user_id
+            }
+        )?
+        .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch all members in a server
+    async fn fetch_all_members<'a>(&self, server_id: &str) -> Result<Vec<Member>> {
+        Ok(self
+            .col::<Member>(COL)
+            .find(
+                doc! {
+                    "_id.server": server_id
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Fetch all memberships for a user
+    async fn fetch_all_memberships<'a>(&self, user_id: &str) -> Result<Vec<Member>> {
+        Ok(self
+            .col::<Member>(COL)
+            .find(
+                doc! {
+                    "_id.user": user_id
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Fetch multiple members by their ids
+    async fn fetch_members<'a>(&self, server_id: &str, ids: &'a [String]) -> Result<Vec<Member>> {
+        Ok(self
+            .col::<Member>(COL)
+            .find(
+                doc! {
+                    "_id.server": server_id,
+                    "_id.user": {
+                        "$in": ids
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Fetch member count of a server
+    async fn fetch_member_count(&self, server_id: &str) -> Result<usize> {
+        self.col::<Member>(COL)
+            .count_documents(
+                doc! {
+                    "_id.server": server_id
+                },
+                None,
+            )
+            .await
+            .map(|c| c as usize)
+            .map_err(|_| create_database_error!("count_documents", COL))
+    }
+
+    /// Fetch server count of a user
+    async fn fetch_server_count(&self, user_id: &str) -> Result<usize> {
+        self.col::<Member>(COL)
+            .count_documents(
+                doc! {
+                    "_id.user": user_id
+                },
+                None,
+            )
+            .await
+            .map(|c| c as usize)
+            .map_err(|_| create_database_error!("count_documents", COL))
+    }
+
+    /// Update information for a server member
+    async fn update_member(
+        &self,
+        id: &MemberCompositeKey,
+        partial: &PartialMember,
+        remove: Vec<FieldsMember>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one,
+            COL,
+            doc! {
+                "_id.server": &id.server,
+                "_id.user": &id.user
+            },
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    /// Delete a server member by their id
+    async fn delete_member(&self, id: &MemberCompositeKey) -> Result<()> {
+        query!(
+            self,
+            delete_one,
+            COL,
+            doc! {
+                "_id.server": &id.server,
+                "_id.user": &id.user
+            }
+        )
+        .map(|_| ())
+    }
+}
+
+impl IntoDocumentPath for FieldsMember {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsMember::Avatar => "avatar",
+            FieldsMember::Nickname => "nickname",
+            FieldsMember::Roles => "roles",
+            FieldsMember::Timeout => "timeout",
+        })
+    }
+}

crates/core/database/src/models/server_members/ops/reference.rs

@@ -0,0 +1,117 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{FieldsMember, Member, MemberCompositeKey, PartialMember};
+
+use super::AbstractServerMembers;
+
+#[async_trait]
+impl AbstractServerMembers for ReferenceDb {
+    /// Insert a new server member into the database
+    async fn insert_member(&self, member: &Member) -> Result<()> {
+        let mut server_members = self.server_members.lock().await;
+        if server_members.contains_key(&member.id) {
+            Err(create_database_error!("insert", "member"))
+        } else {
+            server_members.insert(member.id.clone(), member.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch a server member by their id
+    async fn fetch_member(&self, server_id: &str, user_id: &str) -> Result<Member> {
+        let server_members = self.server_members.lock().await;
+        server_members
+            .get(&MemberCompositeKey {
+                server: server_id.to_string(),
+                user: user_id.to_string(),
+            })
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch all members in a server
+    async fn fetch_all_members<'a>(&self, server_id: &str) -> Result<Vec<Member>> {
+        let server_members = self.server_members.lock().await;
+        Ok(server_members
+            .values()
+            .filter(|member| member.id.server == server_id)
+            .cloned()
+            .collect())
+    }
+
+    /// Fetch all memberships for a user
+    async fn fetch_all_memberships<'a>(&self, user_id: &str) -> Result<Vec<Member>> {
+        let server_members = self.server_members.lock().await;
+        Ok(server_members
+            .values()
+            .filter(|member| member.id.user == user_id)
+            .cloned()
+            .collect())
+    }
+
+    /// Fetch multiple members by their ids
+    async fn fetch_members<'a>(&self, server_id: &str, ids: &'a [String]) -> Result<Vec<Member>> {
+        let server_members = self.server_members.lock().await;
+        ids.iter()
+            .map(|id| {
+                server_members
+                    .get(&MemberCompositeKey {
+                        server: server_id.to_string(),
+                        user: id.to_string(),
+                    })
+                    .cloned()
+                    .ok_or_else(|| create_error!(NotFound))
+            })
+            .collect()
+    }
+
+    /// Fetch member count of a server
+    async fn fetch_member_count(&self, server_id: &str) -> Result<usize> {
+        let server_members = self.server_members.lock().await;
+        Ok(server_members
+            .values()
+            .filter(|member| member.id.server == server_id)
+            .count())
+    }
+
+    /// Fetch server count of a user
+    async fn fetch_server_count(&self, user_id: &str) -> Result<usize> {
+        let server_members = self.server_members.lock().await;
+        Ok(server_members
+            .values()
+            .filter(|member| member.id.user == user_id)
+            .count())
+    }
+
+    /// Update information for a server member
+    async fn update_member(
+        &self,
+        id: &MemberCompositeKey,
+        partial: &PartialMember,
+        remove: Vec<FieldsMember>,
+    ) -> Result<()> {
+        let mut server_members = self.server_members.lock().await;
+        if let Some(member) = server_members.get_mut(id) {
+            for field in remove {
+                #[allow(clippy::disallowed_methods)]
+                member.remove_field(&field);
+            }
+
+            member.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete a server member by their id
+    async fn delete_member(&self, id: &MemberCompositeKey) -> Result<()> {
+        let mut server_members = self.server_members.lock().await;
+        if server_members.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/servers/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/servers/model.rs

@@ -0,0 +1,451 @@
+use std::collections::{HashMap, HashSet};
+
+use revolt_permissions::OverrideField;
+use revolt_result::Result;
+use ulid::Ulid;
+
+use crate::{Database, File};
+
+auto_derived_partial!(
+    /// Server
+    pub struct Server {
+        /// Unique Id
+        #[serde(rename = "_id")]
+        pub id: String,
+        /// User id of the owner
+        pub owner: String,
+
+        /// Name of the server
+        pub name: String,
+        /// Description for the server
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub description: Option<String>,
+
+        /// Channels within this server
+        // ! FIXME: this may be redundant
+        pub channels: Vec<String>,
+        /// Categories for this server
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub categories: Option<Vec<Category>>,
+        /// Configuration for sending system event messages
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub system_messages: Option<SystemMessageChannels>,
+
+        /// Roles for this server
+        #[serde(
+            default = "HashMap::<String, Role>::new",
+            skip_serializing_if = "HashMap::<String, Role>::is_empty"
+        )]
+        pub roles: HashMap<String, Role>,
+        /// Default set of server and channel permissions
+        pub default_permissions: i64,
+
+        /// Icon attachment
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub icon: Option<File>,
+        /// Banner attachment
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub banner: Option<File>,
+
+        /// Bitfield of server flags
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub flags: Option<i32>,
+
+        /// Whether this server is flagged as not safe for work
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub nsfw: bool,
+        /// Whether to enable analytics
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub analytics: bool,
+        /// Whether this server should be publicly discoverable
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub discoverable: bool,
+    },
+    "PartialServer"
+);
+
+auto_derived_partial!(
+    /// Role
+    pub struct Role {
+        /// Role name
+        pub name: String,
+        /// Permissions available to this role
+        pub permissions: OverrideField,
+        /// Colour used for this role
+        ///
+        /// This can be any valid CSS colour
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub colour: Option<String>,
+        /// Whether this role should be shown separately on the member sidebar
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub hoist: bool,
+        /// Ranking of this role
+        #[serde(default)]
+        pub rank: i64,
+    },
+    "PartialRole"
+);
+
+auto_derived!(
+    /// Channel category
+    pub struct Category {
+        /// Unique ID for this category
+        pub id: String,
+        /// Title for this category
+        pub title: String,
+        /// Channels in this category
+        pub channels: Vec<String>,
+    }
+
+    /// System message channel assignments
+    pub struct SystemMessageChannels {
+        /// ID of channel to send user join messages in
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub user_joined: Option<String>,
+        /// ID of channel to send user left messages in
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub user_left: Option<String>,
+        /// ID of channel to send user kicked messages in
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub user_kicked: Option<String>,
+        /// ID of channel to send user banned messages in
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub user_banned: Option<String>,
+    }
+
+    /// Optional fields on server object
+    pub enum FieldsServer {
+        Description,
+        Categories,
+        SystemMessages,
+        Icon,
+        Banner,
+    }
+
+    /// Optional fields on server object
+    pub enum FieldsRole {
+        Colour,
+    }
+);
+
+impl Server {
+    /// Create a server
+    pub async fn create(&self, db: &Database) -> Result<()> {
+        db.insert_server(self).await
+    }
+
+    /// Update server data
+    pub async fn update<'a>(
+        &mut self,
+        db: &Database,
+        partial: PartialServer,
+        remove: Vec<FieldsServer>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        self.apply_options(partial.clone());
+
+        db.update_server(&self.id, &partial, remove.clone()).await?;
+
+        /* // TODO: EventV1::ServerUpdate {
+            id: self.id.clone(),
+            data: partial,
+            clear: remove,
+        }
+        .p(self.id.clone())
+        .await; */
+
+        Ok(())
+    }
+
+    /// Delete a server
+    pub async fn delete(self, db: &Database) -> Result<()> {
+        /* // TODO: EventV1::ServerDelete {
+            id: self.id.clone(),
+        }
+        .p(self.id.clone())
+        .await; */
+
+        db.delete_server(&self.id).await
+    }
+
+    /// Remove a field from Server
+    pub fn remove_field(&mut self, field: &FieldsServer) {
+        match field {
+            FieldsServer::Description => self.description = None,
+            FieldsServer::Categories => self.categories = None,
+            FieldsServer::SystemMessages => self.system_messages = None,
+            FieldsServer::Icon => self.icon = None,
+            FieldsServer::Banner => self.banner = None,
+        }
+    }
+
+    /// Set role permission on a server
+    pub async fn set_role_permission(
+        &mut self,
+        db: &Database,
+        role_id: &str,
+        permissions: OverrideField,
+    ) -> Result<()> {
+        if let Some(role) = self.roles.get_mut(role_id) {
+            role.update(
+                db,
+                &self.id,
+                role_id,
+                PartialRole {
+                    permissions: Some(permissions),
+                    ..Default::default()
+                },
+                vec![],
+            )
+            .await?;
+
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /* /// Create a new member in a server
+    pub async fn create_member(
+        &self,
+        db: &Database,
+        user: User,
+        channels: Option<Vec<Channel>>,
+    ) -> Result<Vec<Channel>> {
+        if db.fetch_ban(&self.id, &user.id).await.is_ok() {
+            return Err(Error::Banned);
+        }
+
+        let member = Member {
+            id: MemberCompositeKey {
+                server: self.id.clone(),
+                user: user.id.clone(),
+            },
+            joined_at: Timestamp::now_utc(),
+            nickname: None,
+            avatar: None,
+            roles: vec![],
+            timeout: None,
+        };
+
+        db.insert_member(&member).await?;
+
+        let should_fetch = channels.is_none();
+        let mut channels = channels.unwrap_or_default();
+
+        if should_fetch {
+            let perm = perms(&user).server(self).member(&member);
+            let existing_channels = db.fetch_channels(&self.channels).await?;
+            for channel in existing_channels {
+                if perm
+                    .clone()
+                    .channel(&channel)
+                    .has_permission(db, Permission::ViewChannel)
+                    .await?
+                {
+                    channels.push(channel);
+                }
+            }
+        }
+
+        /* // TODO: EventV1::ServerMemberJoin {
+            id: self.id.clone(),
+            user: user.id.clone(),
+        }
+        .p(self.id.clone())
+        .await;
+
+        EventV1::ServerCreate {
+            id: self.id.clone(),
+            server: self.clone(),
+            channels: channels.clone(),
+        }
+        .private(user.id.clone())
+        .await; */
+
+        if let Some(id) = self
+            .system_messages
+            .as_ref()
+            .and_then(|x| x.user_joined.as_ref())
+        {
+            SystemMessage::UserJoined {
+                id: user.id.clone(),
+            }
+            .into_message(id.to_string())
+            .create_no_web_push(db, id, false)
+            .await
+            .ok();
+        }
+
+        Ok(channels)
+    }
+
+    /// Remove a member from a server
+    pub async fn remove_member(
+        &self,
+        db: &Database,
+        member: Member,
+        intention: RemovalIntention,
+        silent: bool,
+    ) -> Result<()> {
+        db.delete_member(&member.id).await?;
+
+        /* // TODO: EventV1::ServerMemberLeave {
+            id: self.id.to_string(),
+            user: member.id.user.clone(),
+        }
+        .p(member.id.server)
+        .await; */
+
+        if !silent {
+            if let Some(id) = self.system_messages.as_ref().and_then(|x| match intention {
+                RemovalIntention::Leave => x.user_left.as_ref(),
+                RemovalIntention::Kick => x.user_kicked.as_ref(),
+                RemovalIntention::Ban => x.user_banned.as_ref(),
+            }) {
+                match intention {
+                    RemovalIntention::Leave => SystemMessage::UserLeft { id: member.id.user },
+                    RemovalIntention::Kick => SystemMessage::UserKicked { id: member.id.user },
+                    RemovalIntention::Ban => SystemMessage::UserBanned { id: member.id.user },
+                }
+                .into_message(id.to_string())
+                .create_no_web_push(db, id, false)
+                .await
+                .ok();
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Create ban
+    pub async fn ban_user(
+        self,
+        db: &Database,
+        id: MemberCompositeKey,
+        reason: Option<String>,
+    ) -> Result<ServerBan> {
+        let ban = ServerBan { id, reason };
+        db.insert_ban(&ban).await?;
+        Ok(ban)
+    }
+
+    /// Ban a member from a server
+    pub async fn ban_member(
+        self,
+        db: &Database,
+        member: Member,
+        reason: Option<String>,
+    ) -> Result<ServerBan> {
+        self.remove_member(db, member.clone(), RemovalIntention::Ban, false)
+            .await?;
+
+        self.ban_user(db, member.id, reason).await
+    } */
+}
+
+impl Role {
+    /// Into optional struct
+    pub fn into_optional(self) -> PartialRole {
+        PartialRole {
+            name: Some(self.name),
+            permissions: Some(self.permissions),
+            colour: self.colour,
+            hoist: Some(self.hoist),
+            rank: Some(self.rank),
+        }
+    }
+
+    /// Create a role
+    pub async fn create(&self, db: &Database, server_id: &str) -> Result<String> {
+        let role_id = Ulid::new().to_string();
+        db.insert_role(server_id, &role_id, self).await?;
+
+        /* // TODO: EventV1::ServerRoleUpdate {
+            id: server_id.to_string(),
+            role_id: role_id.to_string(),
+            data: self.clone().into_optional(),
+            clear: vec![],
+        }
+        .p(server_id.to_string())
+        .await; */
+
+        Ok(role_id)
+    }
+
+    /// Update server data
+    pub async fn update<'a>(
+        &mut self,
+        db: &Database,
+        server_id: &str,
+        role_id: &str,
+        partial: PartialRole,
+        remove: Vec<FieldsRole>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        self.apply_options(partial.clone());
+
+        db.update_role(server_id, role_id, &partial, remove.clone())
+            .await?;
+
+        /* // TODO: EventV1::ServerRoleUpdate {
+            id: server_id.to_string(),
+            role_id: role_id.to_string(),
+            data: partial,
+            clear: vec![],
+        }
+        .p(server_id.to_string())
+        .await; */
+
+        Ok(())
+    }
+
+    /// Remove field from Role
+    pub fn remove_field(&mut self, field: &FieldsRole) {
+        match field {
+            FieldsRole::Colour => self.colour = None,
+        }
+    }
+
+    /// Delete a role
+    pub async fn delete(self, db: &Database, server_id: &str, role_id: &str) -> Result<()> {
+        /* // TODO: EventV1::ServerRoleDelete {
+            id: server_id.to_string(),
+            role_id: role_id.to_string(),
+        }
+        .p(server_id.to_string())
+        .await; */
+
+        db.delete_role(server_id, role_id).await
+    }
+}
+
+impl SystemMessageChannels {
+    pub fn into_channel_ids(self) -> HashSet<String> {
+        let mut ids = HashSet::new();
+
+        if let Some(id) = self.user_joined {
+            ids.insert(id);
+        }
+
+        if let Some(id) = self.user_left {
+            ids.insert(id);
+        }
+
+        if let Some(id) = self.user_kicked {
+            ids.insert(id);
+        }
+
+        if let Some(id) = self.user_banned {
+            ids.insert(id);
+        }
+
+        ids
+    }
+}

crates/core/database/src/models/servers/ops.rs

@@ -0,0 +1,46 @@
+use revolt_result::Result;
+
+use crate::{FieldsRole, FieldsServer, PartialRole, PartialServer, Role, Server};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractServers: Sync + Send {
+    /// Insert a new server into database
+    async fn insert_server(&self, server: &Server) -> Result<()>;
+
+    /// Fetch a server by its id
+    async fn fetch_server(&self, id: &str) -> Result<Server>;
+
+    /// Fetch a servers by their ids
+    async fn fetch_servers<'a>(&self, ids: &'a [String]) -> Result<Vec<Server>>;
+
+    /// Update a server with new information
+    async fn update_server(
+        &self,
+        id: &str,
+        partial: &PartialServer,
+        remove: Vec<FieldsServer>,
+    ) -> Result<()>;
+
+    /// Delete a server by its id
+    async fn delete_server(&self, id: &str) -> Result<()>;
+
+    /// Insert a new role into server object
+    async fn insert_role(&self, server_id: &str, role_id: &str, role: &Role) -> Result<()>;
+
+    /// Update an existing role on a server
+    async fn update_role(
+        &self,
+        server_id: &str,
+        role_id: &str,
+        partial: &PartialRole,
+        remove: Vec<FieldsRole>,
+    ) -> Result<()>;
+
+    /// Delete a role from a server
+    ///
+    /// Also updates channels and members.
+    async fn delete_role(&self, server_id: &str, role_id: &str) -> Result<()>;
+}

crates/core/database/src/models/servers/ops/mongodb.rs

@@ -0,0 +1,183 @@
+use bson::{to_document, Document};
+use futures::StreamExt;
+use revolt_result::Result;
+
+use crate::{FieldsRole, FieldsServer, PartialRole, PartialServer, Role, Server};
+use crate::{IntoDocumentPath, MongoDb};
+
+use super::AbstractServers;
+
+static COL: &str = "servers";
+
+#[async_trait]
+impl AbstractServers for MongoDb {
+    /// Insert a new server into database
+    async fn insert_server(&self, server: &Server) -> Result<()> {
+        query!(self, insert_one, COL, &server).map(|_| ())
+    }
+
+    /// Fetch a server by its id
+    async fn fetch_server(&self, id: &str) -> Result<Server> {
+        query!(self, find_one_by_id, COL, id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a servers by their ids
+    async fn fetch_servers<'a>(&self, ids: &'a [String]) -> Result<Vec<Server>> {
+        Ok(self
+            .col::<Server>(COL)
+            .find(
+                doc! {
+                    "_id": {
+                        "$in": ids
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", "servers"))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Update a server with new information
+    async fn update_server(
+        &self,
+        id: &str,
+        partial: &PartialServer,
+        remove: Vec<FieldsServer>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            id,
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    /// Delete a server by its id
+    async fn delete_server(&self, id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, id).map(|_| ())
+    }
+
+    /// Insert a new role into server object
+    async fn insert_role(&self, server_id: &str, role_id: &str, role: &Role) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": server_id
+                },
+                doc! {
+                    "$set": {
+                        "roles.".to_owned() + role_id: to_document(role)
+                            .map_err(|_| create_database_error!("to_document", "role"))?
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "server"))
+    }
+
+    /// Update an existing role on a server
+    async fn update_role(
+        &self,
+        server_id: &str,
+        role_id: &str,
+        partial: &PartialRole,
+        remove: Vec<FieldsRole>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            server_id,
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            "roles.".to_owned() + role_id + "."
+        )
+        .map(|_| ())
+    }
+
+    /// Delete a role from a server
+    ///
+    /// Also updates channels and members.
+    async fn delete_role(&self, server_id: &str, role_id: &str) -> Result<()> {
+        self.col::<Document>("server_members")
+            .update_many(
+                doc! {
+                    "_id.server": server_id
+                },
+                doc! {
+                    "$pull": {
+                        "roles": &role_id
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("update_many", "server_members"))?;
+
+        self.col::<Document>("channels")
+            .update_one(
+                doc! {
+                    "server": server_id
+                },
+                doc! {
+                    "$unset": {
+                        "role_permissions.".to_owned() + role_id: 1_i32
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("update_one", "channels"))?;
+
+        self.col::<Document>("servers")
+            .update_one(
+                doc! {
+                    "_id": server_id
+                },
+                doc! {
+                    "$unset": {
+                        "roles.".to_owned() + role_id: 1_i32
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "servers"))
+    }
+}
+
+impl IntoDocumentPath for FieldsServer {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsServer::Banner => "banner",
+            FieldsServer::Categories => "categories",
+            FieldsServer::Description => "description",
+            FieldsServer::Icon => "icon",
+            FieldsServer::SystemMessages => "system_messages",
+        })
+    }
+}
+
+impl IntoDocumentPath for FieldsRole {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsRole::Colour => "colour",
+        })
+    }
+}

crates/core/database/src/models/servers/ops/reference.rs

@@ -0,0 +1,126 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{FieldsRole, FieldsServer, PartialRole, PartialServer, Role, Server};
+
+use super::AbstractServers;
+
+#[async_trait]
+impl AbstractServers for ReferenceDb {
+    /// Insert a new server into database
+    async fn insert_server(&self, server: &Server) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if servers.contains_key(&server.id) {
+            Err(create_database_error!("insert", "server"))
+        } else {
+            servers.insert(server.id.to_string(), server.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch a server by its id
+    async fn fetch_server(&self, id: &str) -> Result<Server> {
+        let servers = self.servers.lock().await;
+        servers
+            .get(id)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a servers by their ids
+    async fn fetch_servers<'a>(&self, ids: &'a [String]) -> Result<Vec<Server>> {
+        let servers = self.servers.lock().await;
+        ids.iter()
+            .map(|id| {
+                servers
+                    .get(id)
+                    .cloned()
+                    .ok_or_else(|| create_error!(NotFound))
+            })
+            .collect()
+    }
+
+    /// Update a server with new information
+    async fn update_server(
+        &self,
+        id: &str,
+        partial: &PartialServer,
+        remove: Vec<FieldsServer>,
+    ) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if let Some(server) = servers.get_mut(id) {
+            for field in remove {
+                #[allow(clippy::disallowed_methods)]
+                server.remove_field(&field);
+            }
+
+            server.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete a server by its id
+    async fn delete_server(&self, id: &str) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if servers.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Insert a new role into server object
+    async fn insert_role(&self, server_id: &str, role_id: &str, role: &Role) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if let Some(server) = servers.get_mut(server_id) {
+            server.roles.insert(role_id.to_string(), role.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Update an existing role on a server
+    async fn update_role(
+        &self,
+        server_id: &str,
+        role_id: &str,
+        partial: &PartialRole,
+        remove: Vec<FieldsRole>,
+    ) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if let Some(server) = servers.get_mut(server_id) {
+            if let Some(role) = server.roles.get_mut(role_id) {
+                for field in remove {
+                    #[allow(clippy::disallowed_methods)]
+                    role.remove_field(&field);
+                }
+
+                role.apply_options(partial.clone());
+                Ok(())
+            } else {
+                Err(create_error!(NotFound))
+            }
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Delete a role from a server
+    ///
+    /// Also updates channels and members.
+    async fn delete_role(&self, server_id: &str, role_id: &str) -> Result<()> {
+        let mut servers = self.servers.lock().await;
+        if let Some(server) = servers.get_mut(server_id) {
+            if server.roles.remove(role_id).is_some() {
+                Ok(())
+            } else {
+                Err(create_error!(NotFound))
+            }
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/user_settings/mod.rs

@@ -0,0 +1,5 @@
+mod model;
+mod ops;
+
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/user_settings/model.rs

@@ -0,0 +1,28 @@
+use std::collections::HashMap;
+
+use crate::Database;
+
+use revolt_result::Result;
+
+pub type UserSettings = HashMap<String, (i64, String)>;
+
+#[async_trait]
+pub trait UserSettingsImpl {
+    async fn set(self, db: &Database, user: &str) -> Result<()>;
+}
+
+#[async_trait]
+impl UserSettingsImpl for UserSettings {
+    async fn set(self, db: &Database, user: &str) -> Result<()> {
+        db.set_user_settings(user, &self).await?;
+
+        /* // TODO: EventV1::UserSettingsUpdate {
+            id: user.to_string(),
+            update: self,
+        }
+        .private(user.to_string())
+        .await; */
+
+        Ok(())
+    }
+}

crates/core/database/src/models/user_settings/ops.rs

@@ -0,0 +1,18 @@
+use revolt_result::Result;
+
+use crate::UserSettings;
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractUserSettings: Sync + Send {
+    /// Fetch a subset of user settings
+    async fn fetch_user_settings(&'_ self, id: &str, filter: &'_ [String]) -> Result<UserSettings>;
+
+    /// Update a subset of user settings
+    async fn set_user_settings(&self, id: &str, settings: &UserSettings) -> Result<()>;
+
+    /// Delete all user settings
+    async fn delete_user_settings(&self, id: &str) -> Result<()>;
+}

crates/core/database/src/models/user_settings/ops/mongodb.rs

@@ -0,0 +1,67 @@
+use ::mongodb::options::FindOneOptions;
+use bson::to_bson;
+use bson::Document;
+use mongodb::options::UpdateOptions;
+use revolt_result::Result;
+
+use crate::MongoDb;
+use crate::UserSettings;
+
+use super::AbstractUserSettings;
+
+static COL: &str = "user_settings";
+
+#[async_trait]
+impl AbstractUserSettings for MongoDb {
+    /// Fetch a subset of user settings
+    async fn fetch_user_settings(&'_ self, id: &str, filter: &'_ [String]) -> Result<UserSettings> {
+        let mut projection = doc! {
+            "_id": 0,
+        };
+
+        for key in filter {
+            projection.insert(key, 1);
+        }
+
+        Ok(query!(
+            self,
+            find_one_with_options,
+            COL,
+            doc! {
+                "_id": id
+            },
+            FindOneOptions::builder().projection(projection).build()
+        )?
+        .unwrap_or_default())
+    }
+
+    /// Update a subset of user settings
+    async fn set_user_settings(&self, id: &str, settings: &UserSettings) -> Result<()> {
+        let mut set = doc! {};
+        for (key, data) in settings {
+            set.insert(
+                key,
+                vec![to_bson(&data.0).unwrap(), to_bson(&data.1).unwrap()],
+            );
+        }
+
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$set": set
+                },
+                UpdateOptions::builder().upsert(true).build(),
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "user_settings"))
+    }
+
+    /// Delete all user settings
+    async fn delete_user_settings(&self, id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, id).map(|_| ())
+    }
+}

crates/core/database/src/models/user_settings/ops/reference.rs

@@ -0,0 +1,46 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::UserSettings;
+
+use super::AbstractUserSettings;
+
+#[async_trait]
+impl AbstractUserSettings for ReferenceDb {
+    /// Fetch a subset of user settings
+    async fn fetch_user_settings(&'_ self, id: &str, filter: &'_ [String]) -> Result<UserSettings> {
+        let user_settings = self.user_settings.lock().await;
+        user_settings
+            .get(id)
+            .cloned()
+            .map(|settings| {
+                settings
+                    .into_iter()
+                    .filter(|(key, _)| filter.contains(key))
+                    .collect()
+            })
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Update a subset of user settings
+    async fn set_user_settings(&self, id: &str, settings: &UserSettings) -> Result<()> {
+        let mut user_settings = self.user_settings.lock().await;
+        if let Some(settings) = user_settings.get_mut(id) {
+            settings.extend(settings.clone());
+        } else {
+            user_settings.insert(id.to_string(), settings.clone());
+        }
+
+        Ok(())
+    }
+
+    /// Delete all user settings
+    async fn delete_user_settings(&self, id: &str) -> Result<()> {
+        let mut user_settings = self.user_settings.lock().await;
+        if user_settings.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/users/mod.rs

@@ -0,0 +1,9 @@
+mod model;
+mod ops;
+#[cfg(feature = "rocket-impl")]
+mod rocket;
+
+#[cfg(feature = "rocket-impl")]
+pub use self::rocket::*;
+pub use model::*;
+pub use ops::*;

crates/core/database/src/models/users/model.rs

@@ -0,0 +1,219 @@
+use std::collections::HashSet;
+
+use crate::{Database, File};
+
+use once_cell::sync::Lazy;
+use revolt_result::{Error, ErrorType, Result};
+
+auto_derived_partial!(
+    /// # User
+    pub struct User {
+        /// Unique Id
+        #[serde(rename = "_id")]
+        pub id: String,
+        /// Username
+        pub username: String,
+        /// Discriminator
+        pub discriminator: String,
+        /// Display name
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub display_name: Option<String>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        /// Avatar attachment
+        pub avatar: Option<File>,
+        /// Relationships with other users
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub relations: Option<Vec<Relationship>>,
+
+        /// Bitfield of user badges
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub badges: Option<i32>,
+        /// User's current status
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub status: Option<UserStatus>,
+        /// User's profile page
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub profile: Option<UserProfile>,
+
+        /// Enum of user flags
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub flags: Option<i32>,
+        /// Whether this user is privileged
+        #[serde(skip_serializing_if = "crate::if_false", default)]
+        pub privileged: bool,
+        /// Bot information
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub bot: Option<BotInformation>,
+    },
+    "PartialUser"
+);
+
+auto_derived!(
+    /// User's relationship with another user (or themselves)
+    pub enum RelationshipStatus {
+        None,
+        User,
+        Friend,
+        Outgoing,
+        Incoming,
+        Blocked,
+        BlockedOther,
+    }
+
+    /// Relationship entry indicating current status with other user
+    pub struct Relationship {
+        #[serde(rename = "_id")]
+        pub id: String,
+        pub status: RelationshipStatus,
+    }
+
+    /// Presence status
+    pub enum Presence {
+        /// User is online
+        Online,
+        /// User is not currently available
+        Idle,
+        /// User is focusing / will only receive mentions
+        Focus,
+        /// User is busy / will not receive any notifications
+        Busy,
+        /// User appears to be offline
+        Invisible,
+    }
+
+    /// User's active status
+    pub struct UserStatus {
+        /// Custom status text
+        #[serde(skip_serializing_if = "String::is_empty", default)]
+        pub text: String,
+        /// Current presence option
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub presence: Option<Presence>,
+    }
+
+    /// User's profile
+    pub struct UserProfile {
+        /// Text content on user's profile
+        #[serde(skip_serializing_if = "String::is_empty", default)]
+        pub content: String,
+        /// Background visible on user's profile
+        #[serde(skip_serializing_if = "Option::is_none")]
+        pub background: Option<File>,
+    }
+
+    /// Bot information for if the user is a bot
+    pub struct BotInformation {
+        /// Id of the owner of this bot
+        pub owner: String,
+    }
+
+    /// Optional fields on user object
+    pub enum FieldsUser {
+        Avatar,
+        StatusText,
+        StatusPresence,
+        ProfileContent,
+        ProfileBackground,
+    }
+);
+
+impl User {
+    /// Check whether a username is already in use by another user
+    #[allow(dead_code)]
+    async fn is_username_taken(db: &Database, username: &str) -> Result<bool> {
+        match db.fetch_user_by_username(username).await {
+            Ok(_) => Ok(true),
+            Err(Error {
+                error_type: ErrorType::NotFound,
+                ..
+            }) => Ok(false),
+            Err(error) => Err(error),
+        }
+    }
+
+    /// Update user data
+    pub async fn update<'a>(
+        &mut self,
+        db: &Database,
+        partial: PartialUser,
+        remove: Vec<FieldsUser>,
+    ) -> Result<()> {
+        for field in &remove {
+            self.remove_field(field);
+        }
+
+        self.apply_options(partial.clone());
+        db.update_user(&self.id, &partial, remove.clone()).await?;
+
+        /* // TODO: EventV1::UserUpdate {
+            id: self.id.clone(),
+            data: partial,
+            clear: remove,
+        }
+        .p_user(self.id.clone(), db)
+        .await; */
+
+        Ok(())
+    }
+
+    /// Remove a field from User object
+    pub fn remove_field(&mut self, field: &FieldsUser) {
+        match field {
+            FieldsUser::Avatar => self.avatar = None,
+            FieldsUser::StatusText => {
+                if let Some(x) = self.status.as_mut() {
+                    x.text = String::new();
+                }
+            }
+            FieldsUser::StatusPresence => {
+                if let Some(x) = self.status.as_mut() {
+                    x.presence = None;
+                }
+            }
+            FieldsUser::ProfileContent => {
+                if let Some(x) = self.profile.as_mut() {
+                    x.content = String::new();
+                }
+            }
+            FieldsUser::ProfileBackground => {
+                if let Some(x) = self.profile.as_mut() {
+                    x.background = None;
+                }
+            }
+        }
+    }
+
+    /// Mark as deleted
+    pub async fn mark_deleted(&mut self, db: &Database) -> Result<()> {
+        self.update(
+            db,
+            PartialUser {
+                username: Some(format!("Deleted User {}", self.id)),
+                flags: Some(2),
+                ..Default::default()
+            },
+            vec![
+                FieldsUser::Avatar,
+                FieldsUser::StatusText,
+                FieldsUser::StatusPresence,
+                FieldsUser::ProfileContent,
+                FieldsUser::ProfileBackground,
+            ],
+        )
+        .await
+    }
+}
+
+pub static DISCRIMINATOR_SEARCH_SPACE: Lazy<HashSet<String>> = Lazy::new(|| {
+    let mut set = (2..9999)
+        .map(|v| format!("{:0>4}", v))
+        .collect::<HashSet<String>>();
+
+    for discrim in [
+        123, 1234, 1111, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999,
+    ] {
+        set.remove(&format!("{:0>4}", discrim));
+    }
+
+    set.into_iter().collect()
+});

crates/core/database/src/models/users/ops.rs

@@ -0,0 +1,57 @@
+use revolt_result::Result;
+
+use crate::{FieldsUser, PartialUser, RelationshipStatus, User};
+
+mod mongodb;
+mod reference;
+
+#[async_trait]
+pub trait AbstractUsers: Sync + Send {
+    /// Insert a new user into the database
+    async fn insert_user(&self, user: &User) -> Result<()>;
+
+    /// Fetch a user from the database
+    async fn fetch_user(&self, id: &str) -> Result<User>;
+
+    /// Fetch a user from the database by their username
+    async fn fetch_user_by_username(&self, username: &str) -> Result<User>;
+
+    /// Fetch a user from the database by their session token
+    async fn fetch_user_by_token(&self, token: &str) -> Result<User>;
+
+    /// Fetch multiple users by their ids
+    async fn fetch_users<'a>(&self, ids: &'a [String]) -> Result<Vec<User>>;
+
+    /// Fetch ids of users that both users are friends with
+    async fn fetch_mutual_user_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>>;
+
+    /// Fetch ids of channels that both users are in
+    async fn fetch_mutual_channel_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>>;
+
+    /// Fetch ids of servers that both users share
+    async fn fetch_mutual_server_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>>;
+
+    /// Update a user by their id given some data
+    async fn update_user(
+        &self,
+        id: &str,
+        user: &PartialUser,
+        remove: Vec<FieldsUser>,
+    ) -> Result<()>;
+
+    /// Set relationship with another user
+    ///
+    /// This should use pull_relationship if relationship is None.
+    async fn set_relationship(
+        &self,
+        user_id: &str,
+        target_id: &str,
+        relationship: &RelationshipStatus,
+    ) -> Result<()>;
+
+    /// Remove relationship with another user
+    async fn pull_relationship(&self, user_id: &str, target_id: &str) -> Result<()>;
+
+    /// Delete a user by their id
+    async fn delete_user(&self, id: &str) -> Result<()>;
+}

crates/core/database/src/models/users/ops/mongodb.rs

@@ -0,0 +1,300 @@
+use ::mongodb::options::{Collation, CollationStrength, FindOneOptions, FindOptions};
+use authifier::models::Session;
+use futures::StreamExt;
+use revolt_result::Result;
+
+use crate::DocumentId;
+use crate::IntoDocumentPath;
+use crate::MongoDb;
+use crate::{FieldsUser, PartialUser, RelationshipStatus, User};
+
+use super::AbstractUsers;
+
+static COL: &str = "users";
+
+#[async_trait]
+impl AbstractUsers for MongoDb {
+    /// Insert a new user into the database
+    async fn insert_user(&self, user: &User) -> Result<()> {
+        query!(self, insert_one, COL, &user).map(|_| ())
+    }
+
+    /// Fetch a user from the database
+    async fn fetch_user(&self, id: &str) -> Result<User> {
+        query!(self, find_one_by_id, COL, id)?.ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a user from the database by their username
+    async fn fetch_user_by_username(&self, username: &str) -> Result<User> {
+        query!(
+            self,
+            find_one_with_options,
+            COL,
+            doc! {
+                "username": username
+            },
+            FindOneOptions::builder()
+                .collation(
+                    Collation::builder()
+                        .locale("en")
+                        .strength(CollationStrength::Secondary)
+                        .build(),
+                )
+                .build()
+        )?
+        .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a user from the database by their session token
+    async fn fetch_user_by_token(&self, token: &str) -> Result<User> {
+        let session = self
+            .col::<Session>("sessions")
+            .find_one(
+                doc! {
+                    "token": token
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find_one", "sessions"))?
+            .ok_or_else(|| create_error!(InvalidSession))?;
+
+        self.fetch_user(&session.id).await
+    }
+
+    /// Fetch multiple users by their ids
+    async fn fetch_users<'a>(&self, ids: &'a [String]) -> Result<Vec<User>> {
+        Ok(self
+            .col::<User>(COL)
+            .find(
+                doc! {
+                    "_id": {
+                        "$in": ids
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async {
+                if cfg!(debug_assertions) {
+                    Some(s.unwrap())
+                } else {
+                    s.ok()
+                }
+            })
+            .collect()
+            .await)
+    }
+
+    /// Fetch ids of users that both users are friends with
+    async fn fetch_mutual_user_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>> {
+        Ok(self
+            .col::<DocumentId>(COL)
+            .find(
+                doc! {
+                    "$and": [
+                        { "relations": { "$elemMatch": { "_id": &user_a, "status": "Friend" } } },
+                        { "relations": { "$elemMatch": { "_id": &user_b, "status": "Friend" } } }
+                    ]
+                },
+                FindOptions::builder().projection(doc! { "_id": 1 }).build(),
+            )
+            .await
+            .map_err(|_| create_database_error!("find", COL))?
+            .filter_map(|s| async { s.ok() })
+            .map(|user| user.id)
+            .collect()
+            .await)
+    }
+
+    /// Fetch ids of channels that both users are in
+    async fn fetch_mutual_channel_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>> {
+        Ok(self
+            .col::<DocumentId>("channels")
+            .find(
+                doc! {
+                    "channel_type": {
+                        "$in": ["Group", "DirectMessage"]
+                    },
+                    "recipients": {
+                        "$all": [ user_a, user_b ]
+                    }
+                },
+                FindOptions::builder().projection(doc! { "_id": 1 }).build(),
+            )
+            .await
+            .map_err(|_| create_database_error!("find", "channels"))?
+            .filter_map(|s| async { s.ok() })
+            .map(|user| user.id)
+            .collect()
+            .await)
+    }
+
+    /// Fetch ids of servers that both users share
+    async fn fetch_mutual_server_ids(&self, user_a: &str, user_b: &str) -> Result<Vec<String>> {
+        Ok(self
+            .col::<DocumentId>("server_members")
+            .aggregate(
+                vec![
+                    doc! {
+                        "$match": {
+                            "_id.user": user_a
+                        }
+                    },
+                    doc! {
+                        "$lookup": {
+                            "from": "server_members",
+                            "as": "members",
+                            "let": {
+                                "server": "$_id.server"
+                            },
+                            "pipeline": [
+                                {
+                                    "$match": {
+                                        "$expr": {
+                                            "$and": [
+                                                { "$eq": [ "$_id.user", user_b ] },
+                                                { "$eq": [ "$_id.server", "$$server" ] }
+                                            ]
+                                        }
+                                    }
+                                }
+                            ]
+                        }
+                    },
+                    doc! {
+                        "$match": {
+                            "members": {
+                                "$size": 1_i32
+                            }
+                        }
+                    },
+                    doc! {
+                        "$project": {
+                            "_id": "$_id.server"
+                        }
+                    },
+                ],
+                None,
+            )
+            .await
+            .map_err(|_| create_database_error!("aggregate", "server_members"))?
+            .filter_map(|s| async { s.ok() })
+            .filter_map(|doc| async move { doc.get_str("_id").map(|id| id.to_string()).ok() })
+            .collect()
+            .await)
+    }
+
+    /// Update a user by their id given some data
+    async fn update_user(
+        &self,
+        id: &str,
+        partial: &PartialUser,
+        remove: Vec<FieldsUser>,
+    ) -> Result<()> {
+        query!(
+            self,
+            update_one_by_id,
+            COL,
+            id,
+            partial,
+            remove.iter().map(|x| x as &dyn IntoDocumentPath).collect(),
+            None
+        )
+        .map(|_| ())
+    }
+
+    /// Set relationship with another user
+    ///
+    /// This should use pull_relationship if relationship is None.
+    async fn set_relationship(
+        &self,
+        user_id: &str,
+        target_id: &str,
+        relationship: &RelationshipStatus,
+    ) -> Result<()> {
+        if let RelationshipStatus::None = relationship {
+            return self.pull_relationship(user_id, target_id).await;
+        }
+
+        self.col::<User>(COL)
+            .update_one(
+                doc! {
+                    "_id": user_id
+                },
+                vec![doc! {
+                    "$set": {
+                        "relations": {
+                            "$concatArrays": [
+                                {
+                                    "$ifNull": [
+                                        {
+                                            "$filter": {
+                                                "input": "$relations",
+                                                "cond": {
+                                                    "$ne": [
+                                                        "$$this._id",
+                                                        target_id
+                                                    ]
+                                                }
+                                            }
+                                        },
+                                        []
+                                    ]
+                                },
+                                [
+                                    {
+                                        "_id": target_id,
+                                        "status": format!("{relationship:?}")
+                                    }
+                                ]
+                            ]
+                        }
+                    }
+                }],
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", "user"))
+    }
+
+    /// Remove relationship with another user
+    async fn pull_relationship(&self, user_id: &str, target_id: &str) -> Result<()> {
+        self.col::<User>(COL)
+            .update_one(
+                doc! {
+                    "_id": user_id
+                },
+                doc! {
+                    "$pull": {
+                        "relations": {
+                            "_id": target_id
+                        }
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| create_database_error!("update_one", COL))
+    }
+
+    /// Delete a user by their id
+    async fn delete_user(&self, id: &str) -> Result<()> {
+        query!(self, delete_one_by_id, COL, id).map(|_| ())
+    }
+}
+
+impl IntoDocumentPath for FieldsUser {
+    fn as_path(&self) -> Option<&'static str> {
+        Some(match self {
+            FieldsUser::Avatar => "avatar",
+            FieldsUser::ProfileBackground => "profile.background",
+            FieldsUser::ProfileContent => "profile.content",
+            FieldsUser::StatusPresence => "status.presence",
+            FieldsUser::StatusText => "status.text",
+        })
+    }
+}

crates/core/database/src/models/users/ops/reference.rs

@@ -0,0 +1,121 @@
+use revolt_result::Result;
+
+use crate::ReferenceDb;
+use crate::{FieldsUser, PartialUser, RelationshipStatus, User};
+
+use super::AbstractUsers;
+
+#[async_trait]
+impl AbstractUsers for ReferenceDb {
+    /// Insert a new user into the database
+    async fn insert_user(&self, user: &User) -> Result<()> {
+        let mut users = self.users.lock().await;
+        if users.contains_key(&user.id) {
+            Err(create_database_error!("insert", "user"))
+        } else {
+            users.insert(user.id.to_string(), user.clone());
+            Ok(())
+        }
+    }
+
+    /// Fetch a user from the database
+    async fn fetch_user(&self, id: &str) -> Result<User> {
+        let users = self.users.lock().await;
+        users
+            .get(id)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a user from the database by their username
+    async fn fetch_user_by_username(&self, username: &str) -> Result<User> {
+        let users = self.users.lock().await;
+        let lowercase = username.to_lowercase();
+        users
+            .values()
+            .find(|user| user.username.to_lowercase() == lowercase)
+            .cloned()
+            .ok_or_else(|| create_error!(NotFound))
+    }
+
+    /// Fetch a user from the database by their session token
+    async fn fetch_user_by_token(&self, _token: &str) -> Result<User> {
+        todo!()
+    }
+
+    /// Fetch multiple users by their ids
+    async fn fetch_users<'a>(&self, ids: &'a [String]) -> Result<Vec<User>> {
+        let users = self.users.lock().await;
+        ids.iter()
+            .map(|id| {
+                users
+                    .get(id)
+                    .cloned()
+                    .ok_or_else(|| create_error!(NotFound))
+            })
+            .collect()
+    }
+
+    /// Fetch ids of users that both users are friends with
+    async fn fetch_mutual_user_ids(&self, _user_a: &str, _user_b: &str) -> Result<Vec<String>> {
+        todo!()
+    }
+
+    /// Fetch ids of channels that both users are in
+    async fn fetch_mutual_channel_ids(&self, _user_a: &str, _user_b: &str) -> Result<Vec<String>> {
+        todo!()
+    }
+
+    /// Fetch ids of servers that both users share
+    async fn fetch_mutual_server_ids(&self, _user_a: &str, _user_b: &str) -> Result<Vec<String>> {
+        todo!()
+    }
+
+    /// Update a user by their id given some data
+    async fn update_user(
+        &self,
+        id: &str,
+        partial: &PartialUser,
+        remove: Vec<FieldsUser>,
+    ) -> Result<()> {
+        let mut users = self.users.lock().await;
+        if let Some(user) = users.get_mut(id) {
+            for field in remove {
+                #[allow(clippy::disallowed_methods)]
+                user.remove_field(&field);
+            }
+
+            user.apply_options(partial.clone());
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+
+    /// Set relationship with another user
+    ///
+    /// This should use pull_relationship if relationship is None.
+    async fn set_relationship(
+        &self,
+        _user_id: &str,
+        _target_id: &str,
+        _relationship: &RelationshipStatus,
+    ) -> Result<()> {
+        todo!()
+    }
+
+    /// Remove relationship with another user
+    async fn pull_relationship(&self, _user_id: &str, _target_id: &str) -> Result<()> {
+        todo!()
+    }
+
+    /// Delete a user by their id
+    async fn delete_user(&self, id: &str) -> Result<()> {
+        let mut users = self.users.lock().await;
+        if users.remove(id).is_some() {
+            Ok(())
+        } else {
+            Err(create_error!(NotFound))
+        }
+    }
+}

crates/core/database/src/models/users/rocket.rs

@@ -0,0 +1,44 @@
+use authifier::models::Session;
+use rocket::http::Status;
+use rocket::request::{self, FromRequest, Outcome, Request};
+
+use crate::{Database, User};
+
+#[rocket::async_trait]
+impl<'r> FromRequest<'r> for User {
+    type Error = authifier::Error;
+
+    async fn from_request(request: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
+        let user: &Option<User> = request
+            .local_cache_async(async {
+                let db = request.rocket().state::<Database>().expect("`Database`");
+
+                let _header_bot_token = request
+                    .headers()
+                    .get("x-bot-token")
+                    .next()
+                    .map(|x| x.to_string());
+
+                /* if let Some(bot_token) = header_bot_token {
+                    if let Ok(user) = User::from_token(db, &bot_token, UserHint::Bot).await {
+                        return Some(user);
+                    }
+                } else */
+                if let Outcome::Success(session) = request.guard::<Session>().await {
+                    // This uses a guard so can't really easily be refactored into from_token at this stage.
+                    if let Ok(user) = db.fetch_user(&session.user_id).await {
+                        return Some(user);
+                    }
+                }
+
+                None
+            })
+            .await;
+
+        if let Some(user) = user {
+            Outcome::Success(user.clone())
+        } else {
+            Outcome::Failure((Status::Unauthorized, authifier::Error::InvalidSession))
+        }
+    }
+}

crates/core/database/src/util/bridge/mod.rs

@@ -0,0 +1 @@
+pub mod v0;

crates/core/database/src/util/bridge/v0.rs

@@ -0,0 +1,336 @@
+use revolt_models::v0::*;
+
+impl From<crate::AccountStrike> for AccountStrike {
+    fn from(value: crate::AccountStrike) -> Self {
+        AccountStrike {
+            id: value.id,
+            user_id: value.user_id,
+            reason: value.reason,
+        }
+    }
+}
+
+impl crate::Bot {
+    pub fn into_public_bot(self, user: crate::User) -> PublicBot {
+        #[cfg(debug_assertions)]
+        assert_eq!(self.id, user.id);
+
+        PublicBot {
+            id: self.id,
+            username: user.username,
+            avatar: user.avatar.map(|x| x.id).unwrap_or_default(),
+            description: user
+                .profile
+                .map(|profile| profile.content)
+                .unwrap_or_default(),
+        }
+    }
+}
+
+impl From<crate::Bot> for Bot {
+    fn from(value: crate::Bot) -> Self {
+        Bot {
+            id: value.id,
+            owner_id: value.owner,
+            token: value.token,
+            public: value.public,
+            analytics: value.analytics,
+            discoverable: value.discoverable,
+            interactions_url: value.interactions_url,
+            terms_of_service_url: value.terms_of_service_url,
+            privacy_policy_url: value.privacy_policy_url,
+            flags: value.flags.unwrap_or_default() as u32,
+        }
+    }
+}
+
+impl From<crate::Webhook> for Webhook {
+    fn from(value: crate::Webhook) -> Self {
+        Webhook {
+            id: value.id,
+            name: value.name,
+            avatar: value.avatar.map(|file| file.into()),
+            channel_id: value.channel_id,
+            token: value.token,
+        }
+    }
+}
+
+impl From<crate::PartialWebhook> for PartialWebhook {
+    fn from(value: crate::PartialWebhook) -> Self {
+        PartialWebhook {
+            id: value.id,
+            name: value.name,
+            avatar: value.avatar.map(|file| file.into()),
+            channel_id: value.channel_id,
+            token: value.token,
+        }
+    }
+}
+
+impl From<FieldsWebhook> for crate::FieldsWebhook {
+    fn from(_value: FieldsWebhook) -> Self {
+        Self::Avatar
+    }
+}
+
+impl From<crate::FieldsWebhook> for FieldsWebhook {
+    fn from(_value: crate::FieldsWebhook) -> Self {
+        Self::Avatar
+    }
+}
+
+impl From<crate::Channel> for Channel {
+    fn from(value: crate::Channel) -> Self {
+        match value {
+            crate::Channel::SavedMessages { id, user } => Channel::SavedMessages { id, user },
+            crate::Channel::DirectMessage {
+                id,
+                active,
+                recipients,
+                last_message_id,
+            } => Channel::DirectMessage {
+                id,
+                active,
+                recipients,
+                last_message_id,
+            },
+            crate::Channel::Group {
+                id,
+                name,
+                owner,
+                description,
+                recipients,
+                icon,
+                last_message_id,
+                permissions,
+                nsfw,
+            } => Channel::Group {
+                id,
+                name,
+                owner,
+                description,
+                recipients,
+                icon: icon.map(|file| file.into()),
+                last_message_id,
+                permissions,
+                nsfw,
+            },
+            crate::Channel::TextChannel {
+                id,
+                server,
+                name,
+                description,
+                icon,
+                last_message_id,
+                default_permissions,
+                role_permissions,
+                nsfw,
+            } => Channel::TextChannel {
+                id,
+                server,
+                name,
+                description,
+                icon: icon.map(|file| file.into()),
+                last_message_id,
+                default_permissions,
+                role_permissions,
+                nsfw,
+            },
+            crate::Channel::VoiceChannel {
+                id,
+                server,
+                name,
+                description,
+                icon,
+                default_permissions,
+                role_permissions,
+                nsfw,
+            } => Channel::VoiceChannel {
+                id,
+                server,
+                name,
+                description,
+                icon: icon.map(|file| file.into()),
+                default_permissions,
+                role_permissions,
+                nsfw,
+            },
+        }
+    }
+}
+
+impl From<crate::PartialChannel> for PartialChannel {
+    fn from(value: crate::PartialChannel) -> Self {
+        PartialChannel {
+            name: value.name,
+            owner: value.owner,
+            description: value.description,
+            icon: value.icon.map(|file| file.into()),
+            nsfw: value.nsfw,
+            active: value.active,
+            permissions: value.permissions,
+            role_permissions: value.role_permissions,
+            default_permissions: value.default_permissions,
+            last_message_id: value.last_message_id,
+        }
+    }
+}
+
+impl From<FieldsChannel> for crate::FieldsChannel {
+    fn from(value: FieldsChannel) -> Self {
+        match value {
+            FieldsChannel::Description => crate::FieldsChannel::Description,
+            FieldsChannel::Icon => crate::FieldsChannel::Icon,
+            FieldsChannel::DefaultPermissions => crate::FieldsChannel::DefaultPermissions,
+        }
+    }
+}
+
+impl From<crate::FieldsChannel> for FieldsChannel {
+    fn from(value: crate::FieldsChannel) -> Self {
+        match value {
+            crate::FieldsChannel::Description => FieldsChannel::Description,
+            crate::FieldsChannel::Icon => FieldsChannel::Icon,
+            crate::FieldsChannel::DefaultPermissions => FieldsChannel::DefaultPermissions,
+        }
+    }
+}
+
+impl From<crate::File> for File {
+    fn from(value: crate::File) -> Self {
+        File {
+            id: value.id,
+            tag: value.tag,
+            filename: value.filename,
+            metadata: value.metadata.into(),
+            content_type: value.content_type,
+            size: value.size,
+            deleted: value.deleted,
+            reported: value.reported,
+            message_id: value.message_id,
+            user_id: value.user_id,
+            server_id: value.server_id,
+            object_id: value.object_id,
+        }
+    }
+}
+
+impl From<crate::Metadata> for Metadata {
+    fn from(value: crate::Metadata) -> Self {
+        match value {
+            crate::Metadata::File => Metadata::File,
+            crate::Metadata::Text => Metadata::Text,
+            crate::Metadata::Image { width, height } => Metadata::Image {
+                width: width as usize,
+                height: height as usize,
+            },
+            crate::Metadata::Video { width, height } => Metadata::Video {
+                width: width as usize,
+                height: height as usize,
+            },
+            crate::Metadata::Audio => Metadata::Audio,
+        }
+    }
+}
+
+impl crate::User {
+    pub async fn into<P>(self, perspective: P) -> User
+    where
+        P: Into<Option<crate::User>>,
+    {
+        let relationship = if let Some(perspective) = perspective.into() {
+            perspective
+                .relations
+                .unwrap_or_default()
+                .into_iter()
+                .find(|relationship| relationship.id == self.id)
+                .map(|relationship| relationship.status.into())
+                .unwrap_or_default()
+        } else {
+            RelationshipStatus::None
+        };
+
+        // do permission stuff here
+        // TODO: implement permissions =)
+        let can_see_profile = false;
+
+        User {
+            username: self.username,
+            discriminator: self.discriminator,
+            display_name: self.display_name,
+            avatar: self.avatar.map(|file| file.into()),
+            relations: vec![],
+            badges: self.badges.unwrap_or_default() as u32,
+            status: None,
+            profile: None,
+            flags: self.flags.unwrap_or_default() as u32,
+            privileged: self.privileged,
+            bot: self.bot.map(|bot| bot.into()),
+            relationship,
+            online: can_see_profile && revolt_presence::is_online(&self.id).await,
+            id: self.id,
+        }
+    }
+}
+
+impl From<crate::RelationshipStatus> for RelationshipStatus {
+    fn from(value: crate::RelationshipStatus) -> Self {
+        match value {
+            crate::RelationshipStatus::None => RelationshipStatus::None,
+            crate::RelationshipStatus::User => RelationshipStatus::User,
+            crate::RelationshipStatus::Friend => RelationshipStatus::Friend,
+            crate::RelationshipStatus::Outgoing => RelationshipStatus::Outgoing,
+            crate::RelationshipStatus::Incoming => RelationshipStatus::Incoming,
+            crate::RelationshipStatus::Blocked => RelationshipStatus::Blocked,
+            crate::RelationshipStatus::BlockedOther => RelationshipStatus::BlockedOther,
+        }
+    }
+}
+
+impl From<crate::Relationship> for Relationship {
+    fn from(value: crate::Relationship) -> Self {
+        Self {
+            user_id: value.id,
+            status: value.status.into(),
+        }
+    }
+}
+
+impl From<crate::Presence> for Presence {
+    fn from(value: crate::Presence) -> Self {
+        match value {
+            crate::Presence::Online => Presence::Online,
+            crate::Presence::Idle => Presence::Idle,
+            crate::Presence::Focus => Presence::Focus,
+            crate::Presence::Busy => Presence::Busy,
+            crate::Presence::Invisible => Presence::Invisible,
+        }
+    }
+}
+
+impl From<crate::UserStatus> for UserStatus {
+    fn from(value: crate::UserStatus) -> Self {
+        UserStatus {
+            text: value.text,
+            presence: value.presence.map(|presence| presence.into()),
+        }
+    }
+}
+
+impl From<crate::UserProfile> for UserProfile {
+    fn from(value: crate::UserProfile) -> Self {
+        UserProfile {
+            content: value.content,
+            background: value.background.map(|file| file.into()),
+        }
+    }
+}
+
+impl From<crate::BotInformation> for BotInformation {
+    fn from(value: crate::BotInformation) -> Self {
+        BotInformation {
+            owner_id: value.owner,
+        }
+    }
+}

crates/core/database/src/util/mod.rs

@@ -0,0 +1,3 @@
+pub mod bridge;
+pub mod permissions;
+pub mod reference;

crates/core/database/src/util/permissions.rs

@@ -0,0 +1,206 @@
+use std::borrow::Cow;
+
+use revolt_permissions::{
+    calculate_user_permissions, ChannelType, Override, PermissionQuery, RelationshipStatus,
+};
+
+use crate::{Database, User};
+
+/// Permissions calculator
+pub struct PermissionCalculator<'a> {
+    #[allow(dead_code)]
+    database: &'a Database,
+
+    perspective: &'a User,
+    user: Option<Cow<'a, User>>,
+    // pub channel: Cow<'a, Channel>,
+    // pub server: Cow<'a, Server>,
+    // pub member: Cow<'a, Member>,
+
+    // flag_known_relationship: Option<&'a RelationshipStatus>,
+    cached_user_permission: Option<u32>,
+    cached_permission: Option<u64>,
+}
+
+#[async_trait]
+impl PermissionQuery for PermissionCalculator<'_> {
+    // * For calculating user permission
+
+    /// Is our perspective user privileged?
+    async fn are_we_privileged(&mut self) -> bool {
+        self.perspective.privileged
+    }
+
+    /// Is our perspective user a bot?
+    async fn are_we_a_bot(&mut self) -> bool {
+        self.perspective.bot.is_some()
+    }
+
+    /// Is our perspective user and the currently selected user the same?
+    async fn are_the_users_same(&mut self) -> bool {
+        if let Some(other_user) = &self.user {
+            self.perspective.id == other_user.id
+        } else {
+            false
+        }
+    }
+
+    /// Get the relationship with have with the currently selected user
+    async fn user_relationship(&mut self) -> RelationshipStatus {
+        if let Some(other_user) = &self.user {
+            if let Some(relations) = &self.perspective.relations {
+                for entry in relations {
+                    if entry.id == other_user.id {
+                        return match entry.status {
+                            crate::RelationshipStatus::None => RelationshipStatus::None,
+                            crate::RelationshipStatus::User => RelationshipStatus::User,
+                            crate::RelationshipStatus::Friend => RelationshipStatus::Friend,
+                            crate::RelationshipStatus::Outgoing => RelationshipStatus::Outgoing,
+                            crate::RelationshipStatus::Incoming => RelationshipStatus::Incoming,
+                            crate::RelationshipStatus::Blocked => RelationshipStatus::Blocked,
+                            crate::RelationshipStatus::BlockedOther => {
+                                RelationshipStatus::BlockedOther
+                            }
+                        };
+                    }
+                }
+            }
+        }
+
+        RelationshipStatus::None
+    }
+
+    /// Whether the currently selected user is a bot
+    async fn user_is_bot(&mut self) -> bool {
+        if let Some(other_user) = &self.user {
+            other_user.bot.is_some()
+        } else {
+            false
+        }
+    }
+
+    /// Do we have a mutual connection with the currently selected user?
+    async fn have_mutual_connection(&mut self) -> bool {
+        // TODO: User::has_mutual_connection
+        false
+    }
+
+    // * For calculating server permission
+
+    /// Is our perspective user the server's owner?
+    async fn are_we_server_owner(&mut self) -> bool {
+        todo!()
+    }
+
+    /// Is our perspective user a member of the server?
+    async fn are_we_a_member(&mut self) -> bool {
+        todo!()
+    }
+
+    /// Get default server permission
+    async fn get_default_server_permissions(&mut self) -> u64 {
+        todo!()
+    }
+
+    /// Get the ordered role overrides (from lowest to highest) for this member in this server
+    async fn get_our_server_role_overrides(&mut self) -> Vec<Override> {
+        todo!()
+    }
+
+    /// Is our perspective user timed out on this server?
+    async fn are_we_timed_out(&mut self) -> bool {
+        todo!()
+    }
+
+    // * For calculating channel permission
+
+    /// Get the type of the channel
+    async fn get_channel_type(&mut self) -> ChannelType {
+        todo!()
+    }
+
+    /// Get the default channel permissions
+    /// Group channel defaults should be mapped to an allow-only override
+    async fn get_default_channel_permissions(&mut self) -> Override {
+        todo!()
+    }
+
+    /// Get the ordered role overrides (from lowest to highest) for this member in this channel
+    async fn get_our_channel_role_overrides(&mut self) -> Vec<Override> {
+        todo!()
+    }
+
+    /// Do we own this group or saved messages channel if it is one of those?
+    async fn do_we_own_the_channel(&mut self) -> bool {
+        todo!()
+    }
+
+    /// Are we a recipient of this channel?
+    async fn are_we_part_of_the_channel(&mut self) -> bool {
+        todo!()
+    }
+
+    /// Set the current user as the recipient of this channel
+    /// (this will only ever be called for DirectMessage channels, use unimplemented!() for other code paths)
+    async fn set_recipient_as_user(&mut self) {
+        todo!()
+    }
+
+    /// Set the current server as the server owning this channel
+    /// (this will only ever be called for server channels, use unimplemented!() for other code paths)
+    async fn set_server_from_channel(&mut self) {
+        todo!()
+    }
+}
+
+impl<'a> PermissionCalculator<'a> {
+    /// Create a new permission calculator
+    pub fn new(database: &'a Database, perspective: &'a User) -> PermissionCalculator<'a> {
+        PermissionCalculator {
+            database,
+            perspective,
+            user: None,
+
+            cached_user_permission: None,
+            cached_permission: None,
+        }
+    }
+
+    /// Calculate the user permission value
+    pub async fn calc_user(mut self) -> PermissionCalculator<'a> {
+        if self.cached_user_permission.is_some() {
+            return self;
+        }
+
+        if self.user.is_none() {
+            panic!("Expected `PermissionCalculator.user to exist.");
+        }
+
+        PermissionCalculator {
+            cached_user_permission: Some(calculate_user_permissions(&mut self).await),
+            ..self
+        }
+    }
+
+    /// Calculate the permission value
+    pub async fn calc(self) -> PermissionCalculator<'a> {
+        if self.cached_permission.is_some() {
+            return self;
+        }
+
+        self
+    }
+
+    /// Use user
+    pub fn user(self, user: Cow<'a, User>) -> PermissionCalculator {
+        PermissionCalculator {
+            user: Some(user),
+            ..self
+        }
+    }
+}
+
+/// Short-hand for creating a permission calculator
+pub fn perms<'a>(database: &'a Database, perspective: &'a User) -> PermissionCalculator<'a> {
+    PermissionCalculator::new(database, perspective)
+}

crates/core/database/src/util/reference.rs

@@ -0,0 +1,57 @@
+use revolt_result::Result;
+#[cfg(feature = "rocket-impl")]
+use rocket::request::FromParam;
+#[cfg(feature = "rocket-impl")]
+use schemars::{
+    schema::{InstanceType, Schema, SchemaObject, SingleOrVec},
+    JsonSchema,
+};
+
+use crate::{Bot, Database, Webhook};
+
+/// Reference to some object in the database
+#[derive(Serialize, Deserialize)]
+pub struct Reference {
+    /// Id of object
+    pub id: String,
+}
+
+impl Reference {
+    /// Create a Ref from an unchecked string
+    pub fn from_unchecked(id: String) -> Reference {
+        Reference { id }
+    }
+
+    /// Fetch bot from Ref
+    pub async fn as_bot(&self, db: &Database) -> Result<Bot> {
+        db.fetch_bot(&self.id).await
+    }
+
+    /// Fetch webhook from Ref
+    pub async fn as_webhook(&self, db: &Database) -> Result<Webhook> {
+        db.fetch_webhook(&self.id).await
+    }
+}
+
+#[cfg(feature = "rocket-impl")]
+impl<'r> FromParam<'r> for Reference {
+    type Error = &'r str;
+
+    fn from_param(param: &'r str) -> Result<Self, Self::Error> {
+        Ok(Reference::from_unchecked(param.into()))
+    }
+}
+
+#[cfg(feature = "rocket-impl")]
+impl JsonSchema for Reference {
+    fn schema_name() -> String {
+        "Id".to_string()
+    }
+
+    fn json_schema(_gen: &mut schemars::gen::SchemaGenerator) -> Schema {
+        Schema::Object(SchemaObject {
+            instance_type: Some(SingleOrVec::Single(Box::new(InstanceType::String))),
+            ..Default::default()
+        })
+    }
+}

crates/core/models/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "revolt-models"
+version = "0.6.1"
+edition = "2021"
+license = "AGPL-3.0-or-later"
+authors = [ "Paul Makles <me@insrt.uk>" ]
+description = "Revolt Backend: API Models"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[features]
+serde = [ "dep:serde", "revolt-permissions/serde" ]
+schemas = [ "dep:schemars", "revolt-permissions/schemas" ]
+validator = [ "dep:validator" ]
+partials = [ "dep:revolt_optional_struct", "serde", "schemas" ]
+
+default = [ "serde", "partials" ]
+
+[dependencies]
+# Core
+revolt-permissions = { version = "0.6.1", path = "../permissions" }
+
+# Serialisation
+revolt_optional_struct = { version = "0.2.0", optional = true }
+serde = { version = "1", features = ["derive"], optional = true }
+
+# Spec Generation
+schemars = { version = "0.8.8", optional = true }
+
+# Validation
+validator = { version = "0.16.0", optional = true, features = ["derive"] }