Bump version to 0.4.1-alpha.11

Add messages for desc / icon change for group chats.

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "rust-analyzer.diagnostics.disabled": [
+        "unresolved-macro-call"
+    ]
+}

Cargo.lock

@@ -1067,9 +1067,9 @@ checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
 
 [[package]]
 name = "hive_pubsub"
-version = "0.4.3"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83760410241f6db418bb15e54b506a0887e7240286e29e5b0d2d88f5d1659b24"
+checksum = "2ac4635b1e9faf304ccb33c2f0edbc615030e40d249183281fc788ef20ef5c76"
 dependencies = [
  "futures",
  "many-to-many",
@@ -1389,6 +1389,15 @@ version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
 
+[[package]]
+name = "linkify"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1986921c3c13e81df623c66a298d4b130c061bcb98a01f5b2d3ac402b1649a7f"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.3.4"
@@ -2475,7 +2484,7 @@ dependencies = [
 
 [[package]]
 name = "revolt"
-version = "0.3.3-alpha.8"
+version = "0.0.0"
 dependencies = [
  "async-std",
  "async-tungstenite",
@@ -2490,6 +2499,7 @@ dependencies = [
  "impl_ops",
  "lazy_static",
  "lettre",
+ "linkify",
  "log",
  "many-to-many",
  "md5",

Cargo.toml

@@ -1,49 +1,48 @@
 [package]
 name = "revolt"
-version = "0.3.3-alpha.8"
+# To help optimise CI and Docker builds.
+# Version here is left as 0.0.0, please
+# adjust and run ./set_version.sh instead.
+version = "0.0.0"
 authors = ["Paul Makles <paulmakles@gmail.com>"]
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+regex = "1"
+md5 = "0.7.0"
+log = "0.4.11"
+ulid = "0.4.1"
+rand = "0.7.3"
+time = "0.2.16"
 base64 = "0.13.0"
+linkify = "0.6.0"
+dotenv = "0.15.0"
 futures = "0.3.8"
+chrono = "0.4.15"
+num_enum = "0.5.1"
 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"
-
+bitfield = "0.13.2"
+env_logger = "0.7.1"
+serde_json = "1.0.57"
+lazy_static = "1.4.0"
+urlencoding = "1.1.1"
+many-to-many = "0.1.2"
+lettre = "0.10.0-alpha.1"
+snafu = { version = "0.6.9" }
+reqwest = { version = "0.10.8", features = ["json"] }
 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"
+ctrlc = { version = "3.0", features = ["termination"] }
+hive_pubsub = { version = "0.4.4", features = ["mongo"] }
+async-std = { version = "1.8.0", features = ["tokio02", "attributes"] }
+async-tungstenite = { version = "0.10.0", features = ["async-std-runtime"] }
+rocket_cors = { git = "https://github.com/insertish/rocket_cors", branch = "master" }
+mongodb = { version = "1.1.1", features = ["tokio-runtime"], default-features = false }
+rauth = { git = "https://gitlab.insrt.uk/insert/rauth", rev = "c52758a5087cd035b0ed9c6eacc942ba5468d2ce" }
+rocket_contrib = { git = "https://github.com/SergioBenitez/Rocket", rev = "031948c1daaa146128d8a435be116476f2adde00" }
+rocket_prometheus = { git = "https://github.com/insertish/rocket_prometheus", rev = "3d825aedb42793246c306a81fe67c5b187948983" }
+rocket = { git = "https://github.com/SergioBenitez/Rocket", rev = "031948c1daaa146128d8a435be116476f2adde00", default-features = false }

Dockerfile

@@ -6,6 +6,9 @@ WORKDIR /home/rust/src
 RUN USER=root cargo new --bin revolt
 WORKDIR /home/rust/src/revolt
 COPY Cargo.toml Cargo.lock ./
+COPY src/bin/dummy.rs ./src/bin/dummy.rs
+RUN cargo build --release --bin dummy
+
 COPY assets/templates ./assets/templates
 COPY src ./src
 RUN cargo build --release

publish.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+source set_version.sh
+
+docker build -t revoltchat/server:${version} . &&
+    docker push revoltchat/server:${version}

set_version.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+export version=0.4.1-alpha.11
+echo "pub const VERSION: &str = \"${version}\";" > src/version.rs

src/bin/dummy.rs

@@ -0,0 +1 @@
+fn main() {}

src/database/entities/autumn.rs

@@ -1,9 +1,14 @@
+use mongodb::bson::{doc, from_document};
 use serde::{Deserialize, Serialize};
 
+use crate::database::*;
+use crate::util::result::{Error, Result};
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 #[serde(tag = "type")]
 enum Metadata {
     File,
+    Text,
     Image { width: isize, height: isize },
     Video { width: isize, height: isize },
     Audio,
@@ -13,9 +18,98 @@ enum Metadata {
 pub struct File {
     #[serde(rename = "_id")]
     pub id: String,
+    tag: String,
     filename: String,
     metadata: Metadata,
     content_type: String,
+    size: isize,
 
+    #[serde(skip_serializing_if = "Option::is_none")]
+    deleted: Option<bool>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
     message_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    user_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    server_id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    object_id: Option<String>,
+}
+
+impl File {
+    pub async fn find_and_use(
+        attachment_id: &str,
+        tag: &str,
+        parent_type: &str,
+        parent_id: &str,
+    ) -> Result<File> {
+        let attachments = get_collection("attachments");
+        let key = format!("{}_id", parent_type);
+        if let Some(doc) = attachments
+            .find_one(
+                doc! {
+                    "_id": attachment_id,
+                    "tag": &tag,
+                    key.clone(): {
+                        "$exists": false
+                    }
+                },
+                None,
+            )
+            .await
+            .map_err(|_| Error::DatabaseError {
+                operation: "find_one",
+                with: "attachment",
+            })?
+        {
+            let attachment = from_document::<File>(doc).map_err(|_| Error::DatabaseError {
+                operation: "from_document",
+                with: "attachment",
+            })?;
+
+            attachments
+                .update_one(
+                    doc! {
+                        "_id": &attachment.id
+                    },
+                    doc! {
+                        "$set": {
+                            key: &parent_id
+                        }
+                    },
+                    None,
+                )
+                .await
+                .map_err(|_| Error::DatabaseError {
+                    operation: "update_one",
+                    with: "attachment",
+                })?;
+
+            Ok(attachment)
+        } else {
+            Err(Error::UnknownAttachment)
+        }
+    }
+
+    pub async fn delete(&self) -> Result<()> {
+        get_collection("attachments")
+            .update_one(
+                doc! {
+                    "_id": &self.id
+                },
+                doc! {
+                    "$set": {
+                        "deleted": true
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "attachment",
+            })
+    }
 }

src/database/entities/channel.rs

@@ -1,7 +1,11 @@
 use crate::database::*;
 use crate::notifications::events::ClientboundNotification;
 use crate::util::result::{Error, Result};
-use mongodb::bson::{doc, from_document, to_document};
+use futures::StreamExt;
+use mongodb::{
+    bson::{doc, from_document, to_document, Document},
+    options::FindOptions,
+};
 use rocket_contrib::json::JsonValue;
 use serde::{Deserialize, Serialize};
 
@@ -24,6 +28,7 @@ pub enum Channel {
     DirectMessage {
         #[serde(rename = "_id")]
         id: String,
+
         active: bool,
         recipients: Vec<String>,
         #[serde(skip_serializing_if = "Option::is_none")]
@@ -34,10 +39,14 @@ pub enum Channel {
         id: String,
         #[serde(skip_serializing_if = "Option::is_none")]
         nonce: Option<String>,
+
         name: String,
         owner: String,
         description: String,
         recipients: Vec<String>,
+
+        #[serde(skip_serializing_if = "Option::is_none")]
+        icon: Option<File>,
         #[serde(skip_serializing_if = "Option::is_none")]
         last_message: Option<LastMessage>,
     },
@@ -84,10 +93,7 @@ impl Channel {
             })?;
 
         let channel_id = self.id().to_string();
-        ClientboundNotification::ChannelCreate(self)
-            .publish(channel_id)
-            .await
-            .ok();
+        ClientboundNotification::ChannelCreate(self).publish(channel_id);
 
         Ok(())
     }
@@ -97,17 +103,65 @@ impl Channel {
         ClientboundNotification::ChannelUpdate {
             id: id.clone(),
             data,
+            clear: None,
         }
-        .publish(id)
-        .await
-        .ok();
+        .publish(id);
 
         Ok(())
     }
 
     pub async fn delete(&self) -> Result<()> {
         let id = self.id();
-        get_collection("messages")
+        let messages = get_collection("messages");
+
+        // Check if there are any attachments we need to delete.
+        let message_ids = messages
+            .find(
+                doc! {
+                    "channel": id,
+                    "attachment": {
+                        "$exists": 1
+                    }
+                },
+                FindOptions::builder().projection(doc! { "_id": 1 }).build(),
+            )
+            .await
+            .map_err(|_| Error::DatabaseError {
+                operation: "fetch_many",
+                with: "messages",
+            })?
+            .filter_map(async move |s| s.ok())
+            .collect::<Vec<Document>>()
+            .await
+            .into_iter()
+            .filter_map(|x| x.get_str("_id").ok().map(|x| x.to_string()))
+            .collect::<Vec<String>>();
+
+        // If we found any, mark them as deleted.
+        if message_ids.len() > 0 {
+            get_collection("attachments")
+                .update_many(
+                    doc! {
+                        "message_id": {
+                            "$in": message_ids
+                        }
+                    },
+                    doc! {
+                        "$set": {
+                            "deleted": true
+                        }
+                    },
+                    None,
+                )
+                .await
+                .map_err(|_| Error::DatabaseError {
+                    operation: "update_many",
+                    with: "attachments",
+                })?;
+        }
+
+        // And then delete said messages.
+        messages
             .delete_many(
                 doc! {
                     "channel": id
@@ -133,10 +187,13 @@ impl Channel {
                 with: "channel",
             })?;
 
-        ClientboundNotification::ChannelDelete { id: id.to_string() }
-            .publish(id.to_string())
-            .await
-            .ok();
+        ClientboundNotification::ChannelDelete { id: id.to_string() }.publish(id.to_string());
+
+        if let Channel::Group { icon, .. } = self {
+            if let Some(attachment) = icon {
+                attachment.delete().await?;
+            }
+        }
 
         Ok(())
     }

src/database/entities/january.rs

@@ -0,0 +1,144 @@
+use crate::util::{
+    result::{Error, Result},
+    variables::JANUARY_URL,
+};
+use linkify::{LinkFinder, LinkKind};
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum ImageSize {
+    Large,
+    Preview,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Image {
+    pub url: String,
+    pub width: isize,
+    pub height: isize,
+    pub size: ImageSize,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Video {
+    pub url: String,
+    pub width: isize,
+    pub height: isize,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum TwitchType {
+    Channel,
+    Video,
+    Clip,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum BandcampType {
+    Album,
+    Track,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(tag = "type")]
+pub enum Special {
+    None,
+    YouTube {
+        id: String,
+    },
+    Twitch {
+        content_type: TwitchType,
+        id: String,
+    },
+    Spotify {
+        content_type: String,
+        id: String,
+    },
+    Soundcloud,
+    Bandcamp {
+        content_type: BandcampType,
+        id: String,
+    },
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct Metadata {
+    url: Option<String>,
+    special: Option<Special>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    title: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    description: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    image: Option<Image>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    video: Option<Video>,
+
+    // #[serde(skip_serializing_if = "Option::is_none")]
+    // opengraph_type: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    site_name: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    icon_url: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    color: Option<String>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(tag = "type")]
+pub enum Embed {
+    Website(Metadata),
+    Image(Image),
+    None,
+}
+
+impl Embed {
+    pub async fn generate(content: String) -> Result<Vec<Embed>> {
+        let content = content
+            .split("\n")
+            .map(|v| {
+                // Ignore quoted lines.
+                if let Some(c) = v.chars().next() {
+                    if c == '>' {
+                        return "";
+                    }
+                }
+
+                v
+            })
+            .collect::<Vec<&str>>()
+            .join("\n");
+
+        // ! FIXME: allow multiple links
+        // ! FIXME: prevent generation if link is surrounded with < >
+        let mut finder = LinkFinder::new();
+        finder.kinds(&[LinkKind::Url]);
+        let links: Vec<_> = finder.links(&content).collect();
+
+        if links.len() == 0 {
+            return Err(Error::LabelMe);
+        }
+
+        let link = &links[0];
+
+        let client = reqwest::Client::new();
+        let result = client
+            .get(&format!("{}/embed", *JANUARY_URL))
+            .query(&[("url", link.as_str())])
+            .send()
+            .await;
+
+        match result {
+            Err(_) => return Err(Error::LabelMe),
+            Ok(result) => match result.status() {
+                reqwest::StatusCode::OK => {
+                    let res: Embed = result.json().await.map_err(|_| Error::InvalidOperation)?;
+
+                    Ok(vec![res])
+                }
+                _ => return Err(Error::LabelMe),
+            },
+        }
+    }
+}

src/database/entities/message.rs

@@ -1,4 +1,4 @@
-use crate::util::variables::VAPID_PRIVATE_KEY;
+use crate::util::variables::{VAPID_PRIVATE_KEY, USE_JANUARY};
 use crate::{
     database::*,
     notifications::{events::ClientboundNotification, websocket::is_online},
@@ -17,6 +17,32 @@ use web_push::{
     ContentEncoding, SubscriptionInfo, VapidSignatureBuilder, WebPushClient, WebPushMessageBuilder,
 };
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(tag = "type")]
+pub enum SystemMessage {
+    #[serde(rename = "text")]
+    Text { content: String },
+    #[serde(rename = "user_added")]
+    UserAdded { id: String, by: String },
+    #[serde(rename = "user_remove")]
+    UserRemove { id: String, by: String },
+    #[serde(rename = "user_left")]
+    UserLeft { id: String },
+    #[serde(rename = "channel_renamed")]
+    ChannelRenamed { name: String, by: String },
+    #[serde(rename = "channel_description_changed")]
+    ChannelDescriptionChanged { by: String },
+    #[serde(rename = "channel_icon_changed")]
+    ChannelIconChanged { by: String },
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+#[serde(untagged)]
+pub enum Content {
+    Text(String),
+    SystemMessage(SystemMessage),
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct Message {
     #[serde(rename = "_id")]
@@ -26,15 +52,17 @@ pub struct Message {
     pub channel: String,
     pub author: String,
 
-    pub content: String,
+    pub content: Content,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub attachment: Option<File>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub edited: Option<DateTime>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub embeds: Option<Vec<Embed>>,
 }
 
 impl Message {
-    pub fn create(author: String, channel: String, content: String) -> Message {
+    pub fn create(author: String, channel: String, content: Content) -> Message {
         Message {
             id: Ulid::new().to_string(),
             nonce: None,
@@ -44,6 +72,7 @@ impl Message {
             content,
             attachment: None,
             edited: None,
+            embeds: None,
         }
     }
 
@@ -56,22 +85,28 @@ impl Message {
                 with: "message",
             })?;
 
+        let mut set = if let Content::Text(text) = &self.content {
+            doc! {
+                "last_message": {
+                    "_id": self.id.clone(),
+                    "author": self.author.clone(),
+                    "short": text.chars().take(24).collect::<String>()
+                }
+            }
+        } else {
+            doc! {}
+        };
+
         // ! FIXME: temp code
         let channels = get_collection("channels");
         match &channel {
             Channel::DirectMessage { id, .. } => {
+                set.insert("active", true);
                 channels
                     .update_one(
                         doc! { "_id": id },
                         doc! {
-                            "$set": {
-                                "active": true,
-                                "last_message": {
-                                    "_id": self.id.clone(),
-                                    "author": self.author.clone(),
-                                    "short": self.content.chars().take(24).collect::<String>()
-                                }
-                            }
+                            "$set": set
                         },
                         None,
                     )
@@ -82,34 +117,29 @@ impl Message {
                     })?;
             }
             Channel::Group { id, .. } => {
-                channels
-                    .update_one(
-                        doc! { "_id": id },
-                        doc! {
-                            "$set": {
-                                "last_message": {
-                                    "_id": self.id.clone(),
-                                    "author": self.author.clone(),
-                                    "short": self.content.chars().take(24).collect::<String>()
-                                }
-                            }
-                        },
-                        None,
-                    )
-                    .await
-                    .map_err(|_| Error::DatabaseError {
-                        operation: "update_one",
-                        with: "channel",
-                    })?;
+                if let Content::Text(_) = &self.content {
+                    channels
+                        .update_one(
+                            doc! { "_id": id },
+                            doc! {
+                                "$set": set
+                            },
+                            None,
+                        )
+                        .await
+                        .map_err(|_| Error::DatabaseError {
+                            operation: "update_one",
+                            with: "channel",
+                        })?;
+                }
             }
             _ => {}
         }
 
+        self.process_embed();
+
         let enc = serde_json::to_string(&self).unwrap();
-        ClientboundNotification::Message(self)
-            .publish(channel.id().to_string())
-            .await
-            .ok();
+        ClientboundNotification::Message(self).publish(channel.id().to_string());
 
         /*
            Web Push Test Code
@@ -129,95 +159,122 @@ impl Message {
             _ => {}
         }
 
-        // Fetch their corresponding sessions.
-        let mut cursor = get_collection("accounts")
-            .find(
-                doc! {
-                    "_id": {
-                        "$in": target_ids
+        async_std::task::spawn(async move {
+            // Fetch their corresponding sessions.
+            if let Ok(mut cursor) = get_collection("accounts")
+                .find(
+                    doc! {
+                        "_id": {
+                            "$in": target_ids
+                        },
+                        "sessions.subscription": {
+                            "$exists": true
+                        }
                     },
-                    "sessions.subscription": {
-                        "$exists": true
-                    }
-                },
-                FindOptions::builder()
-                    .projection(doc! { "sessions": 1 })
-                    .build(),
-            )
-            .await
-            .unwrap(); // !FIXME
+                    FindOptions::builder()
+                        .projection(doc! { "sessions": 1 })
+                        .build(),
+                )
+                .await
+            {
+                let mut subscriptions = vec![];
+                while let Some(result) = cursor.next().await {
+                    if let Ok(doc) = result {
+                        if let Ok(sessions) = doc.get_array("sessions") {
+                            for session in sessions {
+                                if let Some(doc) = session.as_document() {
+                                    if let Ok(sub) = doc.get_document("subscription") {
+                                        let endpoint = sub.get_str("endpoint").unwrap().to_string();
+                                        let p256dh = sub.get_str("p256dh").unwrap().to_string();
+                                        let auth = sub.get_str("auth").unwrap().to_string();
 
-        let mut subscriptions = vec![];
-        while let Some(result) = cursor.next().await {
-            if let Ok(doc) = result {
-                if let Ok(sessions) = doc.get_array("sessions") {
-                    for session in sessions {
-                        if let Some(doc) = session.as_document() {
-                            if let Ok(sub) = doc.get_document("subscription") {
-                                let endpoint = sub.get_str("endpoint").unwrap().to_string();
-                                let p256dh = sub.get_str("p256dh").unwrap().to_string();
-                                let auth = sub.get_str("auth").unwrap().to_string();
-
-                                subscriptions.push(SubscriptionInfo::new(endpoint, p256dh, auth));
+                                        subscriptions
+                                            .push(SubscriptionInfo::new(endpoint, p256dh, auth));
+                                    }
+                                }
                             }
                         }
                     }
                 }
-            }
-        }
 
-        if subscriptions.len() > 0 {
-            let client = WebPushClient::new();
-            let key = base64::decode_config(VAPID_PRIVATE_KEY.clone(), base64::URL_SAFE).unwrap();
+                if subscriptions.len() > 0 {
+                    let client = WebPushClient::new();
+                    let key =
+                        base64::decode_config(VAPID_PRIVATE_KEY.clone(), base64::URL_SAFE).unwrap();
 
-            for subscription in subscriptions {
-                let mut builder = WebPushMessageBuilder::new(&subscription).unwrap();
-                let sig_builder =
-                    VapidSignatureBuilder::from_pem(std::io::Cursor::new(&key), &subscription)
+                    for subscription in subscriptions {
+                        let mut builder = WebPushMessageBuilder::new(&subscription).unwrap();
+                        let sig_builder = VapidSignatureBuilder::from_pem(
+                            std::io::Cursor::new(&key),
+                            &subscription,
+                        )
                         .unwrap();
-                let signature = sig_builder.build().unwrap();
-                builder.set_vapid_signature(signature);
-                builder.set_payload(ContentEncoding::AesGcm, enc.as_bytes());
-                let m = builder.build().unwrap();
-                let response = client.send(m).await.ok();
+                        let signature = sig_builder.build().unwrap();
+                        builder.set_vapid_signature(signature);
+                        builder.set_payload(ContentEncoding::AesGcm, enc.as_bytes());
+                        let m = builder.build().unwrap();
+                        client.send(m).await.ok();
+                    }
+                }
             }
-        }
+        });
 
         Ok(())
     }
 
-    pub async fn publish_update(&self, data: JsonValue) -> Result<()> {
+    pub async fn publish_update(self, data: JsonValue) -> Result<()> {
         let channel = self.channel.clone();
         ClientboundNotification::MessageUpdate {
             id: self.id.clone(),
             data,
         }
-        .publish(channel)
-        .await
-        .ok();
+        .publish(channel);
+        self.process_embed();
 
         Ok(())
     }
 
+    pub fn process_embed(&self) {
+        if !*USE_JANUARY {
+            return;
+        }
+
+        if let Content::Text(text) = &self.content {
+            let id = self.id.clone();
+            let content = text.clone();
+            let channel = self.channel.clone();
+            async_std::task::spawn(async move {
+                if let Ok(embeds) = Embed::generate(content).await {
+                    if let Ok(bson) = to_bson(&embeds) {
+                        if let Ok(_) = get_collection("messages")
+                            .update_one(
+                                doc! {
+                                    "_id": &id
+                                },
+                                doc! {
+                                    "$set": {
+                                        "embeds": bson
+                                    }
+                                },
+                                None,
+                            )
+                            .await
+                        {
+                            ClientboundNotification::MessageUpdate {
+                                id,
+                                data: json!({ "embeds": embeds }),
+                            }
+                            .publish(channel);
+                        }
+                    }
+                }
+            });
+        }
+    }
+
     pub async fn delete(&self) -> Result<()> {
         if let Some(attachment) = &self.attachment {
-            get_collection("attachments")
-                .update_one(
-                    doc! {
-                        "_id": &attachment.id
-                    },
-                    doc! {
-                        "$set": {
-                            "deleted": true
-                        }
-                    },
-                    None
-                )
-                .await
-                .map_err(|_| Error::DatabaseError {
-                    operation: "update_one",
-                    with: "attachment",
-                })?;
+            attachment.delete().await?;
         }
 
         get_collection("messages")
@@ -237,9 +294,27 @@ impl Message {
         ClientboundNotification::MessageDelete {
             id: self.id.clone(),
         }
-        .publish(channel)
-        .await
-        .ok();
+        .publish(channel);
+
+        if let Some(attachment) = &self.attachment {
+            get_collection("attachments")
+                .update_one(
+                    doc! {
+                        "_id": &attachment.id
+                    },
+                    doc! {
+                        "$set": {
+                            "deleted": true
+                        }
+                    },
+                    None,
+                )
+                .await
+                .map_err(|_| Error::DatabaseError {
+                    operation: "update_one",
+                    with: "attachment",
+                })?;
+        }
 
         Ok(())
     }

src/database/entities/mod.rs

@@ -1,11 +1,13 @@
 mod autumn;
 mod channel;
-mod guild;
+mod january;
 mod message;
+mod server;
 mod user;
 
 pub use autumn::*;
 pub use channel::*;
-pub use guild::*;
+pub use january::*;
 pub use message::*;
+pub use server::*;
 pub use user::*;

src/database/entities/server.rs

@@ -1,6 +1,6 @@
-// use serde::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 
-/*#[derive(Serialize, Deserialize, Debug, Clone)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct MemberCompositeKey {
     pub guild: String,
     pub user: String,
@@ -27,12 +27,11 @@ pub struct Ban {
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
-pub struct Guild {
+pub struct Server {
     #[serde(rename = "_id")]
     pub id: String,
-    // pub nonce: String, used internally
-    pub name: String,
-    pub description: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub nonce: Option<String>,
     pub owner: String,
 
     pub channels: Vec<String>,
@@ -40,4 +39,4 @@ pub struct Guild {
     pub bans: Vec<Ban>,
 
     pub default_permissions: u32,
-}*/
+}

src/database/entities/user.rs

@@ -1,11 +1,16 @@
-use mongodb::bson::doc;
-use serde::{Deserialize, Serialize};
+use futures::StreamExt;
 use mongodb::options::{Collation, FindOneOptions};
+use mongodb::{
+    bson::{doc, from_document},
+    options::FindOptions,
+};
+use serde::{Deserialize, Serialize};
+use validator::Validate;
 
-use crate::database::*;
-use crate::util::result::{Error, Result};
-use crate::notifications::websocket::is_online;
 use crate::database::permissions::user::UserPermissions;
+use crate::database::*;
+use crate::notifications::websocket::is_online;
+use crate::util::result::{Error, Result};
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 pub enum RelationshipStatus {
@@ -25,14 +30,56 @@ pub struct Relationship {
     pub status: RelationshipStatus,
 }
 
+/*
+pub enum Badge {
+    Developer = 1,
+    Translator = 2,
+}
+*/
+
+#[derive(Serialize, Deserialize, Debug)]
+pub enum Presence {
+    Online,
+    Idle,
+    Busy,
+    Invisible,
+}
+
+#[derive(Validate, Serialize, Deserialize, Debug)]
+pub struct UserStatus {
+    #[validate(length(min = 1, max = 128))]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub text: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub presence: Option<Presence>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct UserProfile {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub content: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub background: Option<File>,
+}
+
+// When changing this struct, update notifications/payload.rs#80
 #[derive(Serialize, Deserialize, Debug)]
 pub struct User {
     #[serde(rename = "_id")]
     pub id: String,
     pub username: String,
     #[serde(skip_serializing_if = "Option::is_none")]
+    pub avatar: Option<File>,
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub relations: Option<Vec<Relationship>>,
 
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub badges: Option<i32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub status: Option<UserStatus>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub profile: Option<UserProfile>,
+
     // ? This should never be pushed to the collection.
     #[serde(skip_serializing_if = "Option::is_none")]
     pub relationship: Option<RelationshipStatus>,
@@ -43,6 +90,8 @@ pub struct User {
 impl User {
     /// Mutate the user object to include relationship as seen by user.
     pub fn from(mut self, user: &User) -> User {
+        self.relationship = Some(RelationshipStatus::None);
+
         if self.id == user.id {
             self.relationship = Some(RelationshipStatus::User);
             return self;
@@ -63,17 +112,37 @@ impl User {
     pub fn with(mut self, permissions: UserPermissions<[u32; 1]>) -> User {
         if permissions.get_view_profile() {
             self.online = Some(is_online(&self.id));
+        } else {
+            self.status = None;
         }
 
+        self.profile = None;
         self
     }
 
+    /// Mutate the user object to appear as seen by user.
+    /// Also overrides the relationship status.
+    pub async fn from_override(
+        mut self,
+        user: &User,
+        relationship: RelationshipStatus,
+    ) -> Result<User> {
+        let permissions = PermissionCalculator::new(&user)
+            .with_relationship(&relationship)
+            .for_user(&self.id)
+            .await?;
+
+        self.relations = None;
+        self.relationship = Some(relationship);
+        Ok(self.with(permissions))
+    }
+
     /// Utility function for checking claimed usernames.
     pub async fn is_username_taken(username: &str) -> Result<bool> {
-        if username == "revolt" && username == "admin" {
-            return Ok(true)
+        if username.to_lowercase() == "revolt" && username.to_lowercase() == "admin" {
+            return Ok(true);
         }
-    
+
         if get_collection("users")
             .find_one(
                 doc! {
@@ -95,4 +164,46 @@ impl User {
             Ok(false)
         }
     }
+
+    /// Utility function for fetching multiple users from the perspective of one.
+    pub async fn fetch_multiple_users(&self, user_ids: Vec<String>) -> Result<Vec<User>> {
+        let mut users = vec![];
+        let mut cursor = get_collection("users")
+            .find(
+                doc! {
+                    "_id": {
+                        "$in": user_ids
+                    }
+                },
+                FindOptions::builder()
+                    .projection(
+                        doc! { "_id": 1, "username": 1, "avatar": 1, "badges": 1, "status": 1 },
+                    )
+                    .build(),
+            )
+            .await
+            .map_err(|_| Error::DatabaseError {
+                operation: "find",
+                with: "users",
+            })?;
+
+        while let Some(result) = cursor.next().await {
+            if let Ok(doc) = result {
+                let other: User = from_document(doc).map_err(|_| Error::DatabaseError {
+                    operation: "from_document",
+                    with: "user",
+                })?;
+
+                let permissions = PermissionCalculator::new(&self)
+                    .with_mutual_connection()
+                    .with_user(&other)
+                    .for_user_given()
+                    .await?;
+
+                users.push(other.from(&self).with(permissions));
+            }
+        }
+
+        Ok(users)
+    }
 }

src/database/migrations/init.rs

@@ -25,10 +25,18 @@ pub async fn create_database() {
         .await
         .expect("Failed to create messages collection.");
 
+    db.create_collection("servers", None)
+        .await
+        .expect("Failed to create servers 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(
         "pubsub",
         CreateCollectionOptions::builder()

src/database/migrations/scripts.rs

@@ -1,4 +1,4 @@
-use crate::database::get_collection;
+use crate::database::{get_collection, get_db};
 
 use log::info;
 use mongodb::bson::{doc, from_document};
@@ -10,7 +10,7 @@ struct MigrationInfo {
     revision: i32,
 }
 
-pub const LATEST_REVISION: i32 = 0;
+pub const LATEST_REVISION: i32 = 3;
 
 pub async fn migrate_database() {
     let migrations = get_collection("migrations");
@@ -53,6 +53,40 @@ pub async fn run_migrations(revision: i32) -> i32 {
         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 = get_collection("messages");
+        let attachments = get_collection("attachments");
+
+        messages
+            .update_many(
+                doc! { "attachment": { "$exists": 1 } },
+                doc! { "$set": { "attachment.tag": "attachments", "attachment.size": 0 } },
+                None,
+            )
+            .await
+            .expect("Failed to update messages.");
+
+        attachments
+            .update_many(
+                doc! {},
+                doc! { "$set": { "tag": "attachments", "size": 0 } },
+                None,
+            )
+            .await
+            .expect("Failed to update attachments.");
+    }
+
+    if revision <= 2 {
+        info!("Running migration [revision 2 / 2021-05-08]: Add servers collection.");
+
+        get_db()
+            .create_collection("servers", None)
+            .await
+            .expect("Failed to create servers collection.");
+    }
+
     // Reminder to update LATEST_REVISION when adding new migrations.
     LATEST_REVISION
 }

src/database/permissions/channel.rs

@@ -12,6 +12,8 @@ pub enum ChannelPermission {
     View = 1,
     SendMessage = 2,
     ManageMessages = 4,
+    ManageChannel = 8,
+    VoiceCall = 16,
 }
 
 bitfield! {
@@ -20,6 +22,8 @@ bitfield! {
     pub get_view, _: 31;
     pub get_send_message, _: 30;
     pub get_manage_messages, _: 29;
+    pub get_manage_channel, _: 28;
+    pub get_voice_call, _: 27;
 }
 
 impl_op_ex!(+ |a: &ChannelPermission, b: &ChannelPermission| -> u32 { *a as u32 | *b as u32 });
@@ -36,9 +40,7 @@ impl<'a> PermissionCalculator<'a> {
         match channel {
             Channel::SavedMessages { user: owner, .. } => {
                 if &self.perspective.id == owner {
-                    Ok(ChannelPermission::View
-                        + ChannelPermission::SendMessage
-                        + ChannelPermission::ManageMessages)
+                    Ok(u32::MAX - ChannelPermission::VoiceCall as u32)
                 } else {
                     Ok(0)
                 }
@@ -54,7 +56,9 @@ impl<'a> PermissionCalculator<'a> {
                         let perms = self.for_user(recipient).await?;
 
                         if perms.get_send_message() {
-                            return Ok(ChannelPermission::View + ChannelPermission::SendMessage);
+                            return Ok(ChannelPermission::View
+                                + ChannelPermission::SendMessage
+                                + ChannelPermission::VoiceCall);
                         }
 
                         return Ok(ChannelPermission::View as u32);
@@ -69,7 +73,10 @@ impl<'a> PermissionCalculator<'a> {
                     .find(|x| *x == &self.perspective.id)
                     .is_some()
                 {
-                    Ok(ChannelPermission::View + ChannelPermission::SendMessage)
+                    Ok(ChannelPermission::View
+                        + ChannelPermission::SendMessage
+                        + ChannelPermission::ManageChannel
+                        + ChannelPermission::VoiceCall)
                 } else {
                     Ok(0)
                 }

src/database/permissions/mod.rs

@@ -9,9 +9,10 @@ pub struct PermissionCalculator<'a> {
     perspective: &'a User,
 
     user: Option<&'a User>,
+    relationship: Option<&'a RelationshipStatus>,
     channel: Option<&'a Channel>,
 
-    has_mutual_conncetion: bool,
+    has_mutual_connection: bool,
 }
 
 impl<'a> PermissionCalculator<'a> {
@@ -20,9 +21,10 @@ impl<'a> PermissionCalculator<'a> {
             perspective,
 
             user: None,
+            relationship: None,
             channel: None,
 
-            has_mutual_conncetion: false,
+            has_mutual_connection: false,
         }
     }
 
@@ -33,6 +35,13 @@ impl<'a> PermissionCalculator<'a> {
         }
     }
 
+    pub fn with_relationship(self, relationship: &'a RelationshipStatus) -> PermissionCalculator {
+        PermissionCalculator {
+            relationship: Some(&relationship),
+            ..self
+        }
+    }
+
     pub fn with_channel(self, channel: &'a Channel) -> PermissionCalculator {
         PermissionCalculator {
             channel: Some(&channel),
@@ -42,7 +51,7 @@ impl<'a> PermissionCalculator<'a> {
 
     pub fn with_mutual_connection(self) -> PermissionCalculator<'a> {
         PermissionCalculator {
-            has_mutual_conncetion: true,
+            has_mutual_connection: true,
             ..self
         }
     }

src/database/permissions/user.rs

@@ -49,7 +49,12 @@ impl<'a> PermissionCalculator<'a> {
         }
 
         let mut permissions: u32 = 0;
-        match get_relationship(&self.perspective, &target) {
+        match self
+            .relationship
+            .clone()
+            .map(|v| v.to_owned())
+            .unwrap_or_else(|| get_relationship(&self.perspective, &target))
+        {
             RelationshipStatus::Friend => return Ok(u32::MAX),
             RelationshipStatus::Blocked | RelationshipStatus::BlockedOther => {
                 return Ok(UserPermission::Access as u32)
@@ -64,7 +69,7 @@ impl<'a> PermissionCalculator<'a> {
             _ => {}
         }
 
-        if self.has_mutual_conncetion
+        if self.has_mutual_connection
             || get_collection("channels")
                 .find_one(
                     doc! {
@@ -84,7 +89,8 @@ impl<'a> PermissionCalculator<'a> {
                 })?
                 .is_some()
         {
-            return Ok(UserPermission::Access as u32);
+            // ! FIXME: add privacy settings
+            return Ok(UserPermission::Access + UserPermission::ViewProfile);
         }
 
         Ok(permissions)

src/main.rs

@@ -17,7 +17,9 @@ pub mod database;
 pub mod notifications;
 pub mod routes;
 pub mod util;
+pub mod version;
 
+use async_std::task;
 use chrono::Duration;
 use futures::join;
 use log::info;
@@ -38,7 +40,10 @@ async fn main() {
     dotenv::dotenv().ok();
     env_logger::init_from_env(env_logger::Env::default().filter_or("RUST_LOG", "info"));
 
-    info!("Starting REVOLT server.");
+    info!(
+        "Starting REVOLT server [version {}].",
+        crate::version::VERSION
+    );
 
     util::variables::preflight_checks();
     database::connect().await;
@@ -50,10 +55,13 @@ async fn main() {
     })
     .expect("Error setting Ctrl-C handler");
 
+    let web_task = task::spawn(launch_web());
+    let hive_task = task::spawn(notifications::hive::listen());
+
     join!(
-        launch_web(),
-        notifications::websocket::launch_server(),
-        notifications::hive::listen(),
+        web_task,
+        hive_task,
+        notifications::websocket::launch_server()
     );
 }
 

src/notifications/events.rs

@@ -26,12 +26,21 @@ pub enum WebSocketError {
 #[serde(tag = "type")]
 pub enum ServerboundNotification {
     Authenticate(Session),
-    BeginTyping {
-        channel: String
-    },
-    EndTyping {
-        channel: String
-    }
+    BeginTyping { channel: String },
+    EndTyping { channel: String },
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub enum RemoveUserField {
+    ProfileContent,
+    ProfileBackground,
+    StatusText,
+    Avatar,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub enum RemoveChannelField {
+    Icon,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -57,6 +66,8 @@ pub enum ClientboundNotification {
     ChannelUpdate {
         id: String,
         data: JsonValue,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        clear: Option<RemoveChannelField>,
     },
     ChannelGroupJoin {
         id: String,
@@ -71,16 +82,22 @@ pub enum ClientboundNotification {
     },
     ChannelStartTyping {
         id: String,
-        user: String
+        user: String,
     },
     ChannelStopTyping {
         id: String,
-        user: String
+        user: String,
     },
 
+    UserUpdate {
+        id: String,
+        data: JsonValue,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        clear: Option<RemoveUserField>,
+    },
     UserRelationship {
         id: String,
-        user: String,
+        user: User,
         status: RelationshipStatus,
     },
     UserPresence {
@@ -90,9 +107,13 @@ pub enum ClientboundNotification {
 }
 
 impl ClientboundNotification {
-    pub async fn publish(self, topic: String) -> Result<(), String> {
-        prehandle_hook(&self); // ! TODO: this should be moved to pubsub
-        hive_pubsub::backend::mongo::publish(get_hive(), &topic, self).await
+    pub fn publish(self, topic: String) {
+        async_std::task::spawn(async move {
+            prehandle_hook(&self); // ! TODO: this should be moved to pubsub
+            hive_pubsub::backend::mongo::publish(get_hive(), &topic, self)
+                .await
+                .ok();
+        });
     }
 }
 
@@ -116,7 +137,7 @@ pub fn prehandle_hook(notification: &ClientboundNotification) {
         }
         ClientboundNotification::UserRelationship { id, user, status } => {
             if status != &RelationshipStatus::None {
-                subscribe_if_exists(id.clone(), user.clone()).ok();
+                subscribe_if_exists(id.clone(), user.id.clone()).ok();
             }
         }
         _ => {}
@@ -132,7 +153,7 @@ pub fn posthandle_hook(notification: &ClientboundNotification) {
             if status == &RelationshipStatus::None {
                 get_hive()
                     .hive
-                    .unsubscribe(&id.to_string(), &user.to_string())
+                    .unsubscribe(&id.to_string(), &user.id.to_string())
                     .ok();
             }
         }

src/notifications/payload.rs

@@ -6,13 +6,9 @@ use crate::{
     util::result::{Error, Result},
 };
 use futures::StreamExt;
-use mongodb::{
-    bson::{doc, from_document},
-    options::FindOptions,
-};
+use mongodb::bson::{doc, from_document};
 
 pub async fn generate_ready(mut user: User) -> Result<ClientboundNotification> {
-    let mut users = vec![];
     let mut user_ids: HashSet<String> = HashSet::new();
 
     if let Some(relationships) = &user.relations {
@@ -68,41 +64,12 @@ pub async fn generate_ready(mut user: User) -> Result<ClientboundNotification> {
     }
 
     user_ids.remove(&user.id);
-    if user_ids.len() > 0 {
-        let mut cursor = get_collection("users")
-            .find(
-                doc! {
-                    "_id": {
-                        "$in": user_ids.into_iter().collect::<Vec<String>>()
-                    }
-                },
-                FindOptions::builder()
-                    .projection(doc! { "_id": 1, "username": 1 })
-                    .build(),
-            )
-            .await
-            .map_err(|_| Error::DatabaseError {
-                operation: "find",
-                with: "users",
-            })?;
-
-        while let Some(result) = cursor.next().await {
-            if let Ok(doc) = result {
-                let other: User = from_document(doc).map_err(|_| Error::DatabaseError {
-                    operation: "from_document",
-                    with: "user",
-                })?;
-
-                let permissions = PermissionCalculator::new(&user)
-                    .with_mutual_connection()
-                    .with_user(&other)
-                    .for_user_given()
-                    .await?;
-
-                users.push(other.from(&user).with(permissions));
-            }
-        }
-    }
+    let mut users = if user_ids.len() > 0 {
+        user.fetch_multiple_users(user_ids.into_iter().collect::<Vec<String>>())
+            .await?
+    } else {
+        vec![]
+    };
 
     user.relationship = Some(RelationshipStatus::User);
     user.online = Some(true);

src/notifications/websocket.rs

@@ -133,9 +133,7 @@ async fn accept(stream: TcpStream) {
                                                 id: id.clone(),
                                                 online: true,
                                             }
-                                            .publish(id)
-                                            .await
-                                            .ok();
+                                            .publish(id);
                                         }
                                     }
                                     Err(_) => {
@@ -171,11 +169,9 @@ async fn accept(stream: TcpStream) {
 
                             ClientboundNotification::ChannelStartTyping {
                                 id: channel.clone(),
-                                user
+                                user,
                             }
-                            .publish(channel)
-                            .await
-                            .ok();
+                            .publish(channel);
                         } else {
                             send(ClientboundNotification::Error(
                                 WebSocketError::AlreadyAuthenticated,
@@ -194,11 +190,9 @@ async fn accept(stream: TcpStream) {
 
                             ClientboundNotification::ChannelStopTyping {
                                 id: channel.clone(),
-                                user
+                                user,
                             }
-                            .publish(channel)
-                            .await
-                            .ok();
+                            .publish(channel);
                         } else {
                             send(ClientboundNotification::Error(
                                 WebSocketError::AlreadyAuthenticated,
@@ -220,14 +214,26 @@ async fn accept(stream: TcpStream) {
     info!("User {} disconnected.", &addr);
     CONNECTIONS.lock().unwrap().remove(&addr);
 
-    let session = session.lock().unwrap();
-    if let Some(session) = session.as_ref() {
-        let mut users = USERS.write().unwrap();
-        users.remove(&session.user_id, &addr);
-        if users.get_left(&session.user_id).is_none() {
-            get_hive().drop_client(&session.user_id).unwrap();
+    let mut offline = None;
+    {
+        let session = session.lock().unwrap();
+        if let Some(session) = session.as_ref() {
+            let mut users = USERS.write().unwrap();
+            users.remove(&session.user_id, &addr);
+            if users.get_left(&session.user_id).is_none() {
+                get_hive().drop_client(&session.user_id).unwrap();
+                offline = Some(session.user_id.clone());
+            }
         }
     }
+
+    if let Some(id) = offline {
+        ClientboundNotification::UserPresence {
+            id: id.clone(),
+            online: false,
+        }
+        .publish(id);
+    }
 }
 
 pub fn publish(ids: Vec<String>, notification: ClientboundNotification) {

src/routes/channels/delete_channel.rs

@@ -95,15 +95,12 @@ pub async fn req(user: User, target: Ref) -> Result<()> {
                 id: id.clone(),
                 user: user.id.clone(),
             }
-            .publish(id.clone())
-            .await
-            .ok();
+            .publish(id.clone());
 
             Message::create(
                 "00000000000000000000000000".to_string(),
                 id.clone(),
-                // ! FIXME: make a schema for this
-                format!("{{\"type\":\"user_left\",\"id\":\"{}\"}}", user.id),
+                Content::SystemMessage(SystemMessage::UserLeft { id: user.id }),
             )
             .publish(&target)
             .await

src/routes/channels/edit_channel.rs

@@ -0,0 +1,153 @@
+use crate::notifications::events::ClientboundNotification;
+use crate::util::result::{Error, Result};
+use crate::{database::*, notifications::events::RemoveChannelField};
+
+use mongodb::bson::{doc, to_document};
+use rocket_contrib::json::Json;
+use serde::{Deserialize, Serialize};
+use validator::Validate;
+
+#[derive(Validate, Serialize, Deserialize)]
+pub struct Data {
+    #[validate(length(min = 1, max = 32))]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    name: Option<String>,
+    #[validate(length(min = 0, max = 1024))]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    description: Option<String>,
+    #[validate(length(min = 1, max = 128))]
+    icon: Option<String>,
+    remove: Option<RemoveChannelField>,
+}
+
+#[patch("/<target>", data = "<data>")]
+pub async fn req(user: User, target: Ref, data: Json<Data>) -> Result<()> {
+    let data = data.into_inner();
+    data.validate()
+        .map_err(|error| Error::FailedValidation { error })?;
+
+    if data.name.is_none()
+        && data.description.is_none()
+        && data.icon.is_none()
+        && data.remove.is_none()
+    {
+        return Ok(());
+    }
+
+    let target = target.fetch_channel().await?;
+    let perm = permissions::PermissionCalculator::new(&user)
+        .with_channel(&target)
+        .for_channel()
+        .await?;
+
+    if !perm.get_manage_channel() {
+        Err(Error::MissingPermission)?
+    }
+
+    match &target {
+        Channel::Group { id, icon, .. } => {
+            let mut set = doc! {};
+            let mut unset = doc! {};
+
+            let mut remove_icon = false;
+            if let Some(remove) = &data.remove {
+                match remove {
+                    RemoveChannelField::Icon => {
+                        unset.insert("icon", 1);
+                        remove_icon = true;
+                    }
+                }
+            }
+
+            if let Some(name) = &data.name {
+                set.insert("name", name);
+            }
+
+            if let Some(description) = &data.description {
+                set.insert("description", description);
+            }
+
+            if let Some(attachment_id) = &data.icon {
+                let attachment =
+                    File::find_and_use(&attachment_id, "icons", "object", &user.id).await?;
+                set.insert(
+                    "icon",
+                    to_document(&attachment).map_err(|_| Error::DatabaseError {
+                        operation: "to_document",
+                        with: "attachment",
+                    })?,
+                );
+
+                remove_icon = true;
+            }
+
+            let mut operations = doc! {};
+            if set.len() > 0 {
+                operations.insert("$set", &set);
+            }
+
+            if unset.len() > 0 {
+                operations.insert("$unset", unset);
+            }
+
+            if operations.len() > 0 {
+                get_collection("channels")
+                    .update_one(doc! { "_id": &id }, operations, None)
+                    .await
+                    .map_err(|_| Error::DatabaseError {
+                        operation: "update_one",
+                        with: "channel",
+                    })?;
+            }
+
+            ClientboundNotification::ChannelUpdate {
+                id: id.clone(),
+                data: json!(set),
+                clear: data.remove,
+            }
+            .publish(id.clone());
+
+            if let Some(name) = data.name {
+                Message::create(
+                    "00000000000000000000000000".to_string(),
+                    id.clone(),
+                    Content::SystemMessage(SystemMessage::ChannelRenamed { name, by: user.id.clone() }),
+                )
+                .publish(&target)
+                .await
+                .ok();
+            }
+
+            if let Some(_) = data.description {
+                Message::create(
+                    "00000000000000000000000000".to_string(),
+                    id.clone(),
+                    Content::SystemMessage(SystemMessage::ChannelDescriptionChanged { by: user.id.clone() }),
+                )
+                .publish(&target)
+                .await
+                .ok();
+            }
+
+            if let Some(_) = data.icon {
+                Message::create(
+                    "00000000000000000000000000".to_string(),
+                    id.clone(),
+                    Content::SystemMessage(SystemMessage::ChannelIconChanged { by: user.id }),
+                )
+                .publish(&target)
+                .await
+                .ok();
+            }
+
+            if remove_icon {
+                if let Some(old_icon) = icon {
+                    old_icon.delete().await?;
+                }
+            }
+
+            Ok(())
+        }
+        _ => Err(Error::InvalidOperation),
+    }
+}

src/routes/channels/fetch_members.rs

@@ -0,0 +1,23 @@
+use crate::database::*;
+use crate::util::result::{Error, Result};
+
+use rocket_contrib::json::JsonValue;
+
+#[get("/<target>/members")]
+pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
+    let target = target.fetch_channel().await?;
+
+    let perm = permissions::PermissionCalculator::new(&user)
+        .with_channel(&target)
+        .for_channel()
+        .await?;
+    if !perm.get_view() {
+        Err(Error::MissingPermission)?
+    }
+
+    if let Channel::Group { recipients, .. } = target {
+        Ok(json!(user.fetch_multiple_users(recipients).await?))
+    } else {
+        Err(Error::InvalidOperation)
+    }
+}

src/routes/channels/group_add_member.rs

@@ -52,15 +52,15 @@ pub async fn req(user: User, target: Ref, member: Ref) -> Result<()> {
             id: id.clone(),
             user: member.id.clone(),
         }
-        .publish(id.clone())
-        .await
-        .ok();
+        .publish(id.clone());
 
         Message::create(
             "00000000000000000000000000".to_string(),
             id.clone(),
-            // ! FIXME: make a schema for this
-            format!("{{\"type\":\"user_added\",\"id\":\"{}\",\"by\":\"{}\"}}", member.id, user.id),
+            Content::SystemMessage(SystemMessage::UserAdded {
+                id: member.id,
+                by: user.id,
+            }),
         )
         .publish(&channel)
         .await

src/routes/channels/group_create.rs

@@ -70,6 +70,7 @@ pub async fn req(user: User, info: Json<Data>) -> Result<JsonValue> {
             .unwrap_or_else(|| "A group.".to_string()),
         owner: user.id,
         recipients: set.into_iter().collect::<Vec<String>>(),
+        icon: None,
         last_message: None,
     };
 

src/routes/channels/group_remove_member.rs

@@ -49,15 +49,15 @@ pub async fn req(user: User, target: Ref, member: Ref) -> Result<()> {
             id: id.clone(),
             user: member.id.clone(),
         }
-        .publish(id.clone())
-        .await
-        .ok();
+        .publish(id.clone());
 
         Message::create(
             "00000000000000000000000000".to_string(),
             id.clone(),
-            // ! FIXME: make a schema for this
-            format!("{{\"type\":\"user_remove\",\"id\":\"{}\",\"by\":\"{}\"}}", member.id, user.id),
+            Content::SystemMessage(SystemMessage::UserRemove {
+                id: member.id,
+                by: user.id,
+            }),
         )
         .publish(&channel)
         .await

src/routes/channels/join_call.rs

@@ -0,0 +1,84 @@
+use crate::database::*;
+use crate::util::result::{Error, Result};
+use crate::util::variables::{USE_VOSO, VOSO_MANAGE_TOKEN, VOSO_URL};
+
+use rocket_contrib::json::JsonValue;
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize)]
+struct CreateUserResponse {
+    token: String,
+}
+
+#[post("/<target>/join_call")]
+pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
+    if !*USE_VOSO {
+        return Err(Error::VosoUnavailable);
+    }
+
+    let target = target.fetch_channel().await?;
+    let perm = permissions::PermissionCalculator::new(&user)
+        .with_channel(&target)
+        .for_channel()
+        .await?;
+
+    if !perm.get_voice_call() {
+        return Err(Error::MissingPermission);
+    }
+
+    // To join a call:
+    // - Check if the room exists.
+    // - If not, create it.
+    let client = reqwest::Client::new();
+    let result = client
+        .get(&format!("{}/room/{}", *VOSO_URL, target.id()))
+        .header(
+            reqwest::header::AUTHORIZATION,
+            VOSO_MANAGE_TOKEN.to_string(),
+        )
+        .send()
+        .await;
+
+    match result {
+        Err(_) => return Err(Error::VosoUnavailable),
+        Ok(result) => match result.status() {
+            reqwest::StatusCode::OK => (),
+            reqwest::StatusCode::NOT_FOUND => {
+                if let Err(_) = client
+                    .post(&format!("{}/room/{}", *VOSO_URL, target.id()))
+                    .header(
+                        reqwest::header::AUTHORIZATION,
+                        VOSO_MANAGE_TOKEN.to_string(),
+                    )
+                    .send()
+                    .await
+                {
+                    return Err(Error::VosoUnavailable);
+                }
+            }
+            _ => return Err(Error::VosoUnavailable),
+        },
+    }
+
+    // Then create a user for the room.
+    if let Ok(response) = client
+        .post(&format!(
+            "{}/room/{}/user/{}",
+            *VOSO_URL,
+            target.id(),
+            user.id
+        ))
+        .header(
+            reqwest::header::AUTHORIZATION,
+            VOSO_MANAGE_TOKEN.to_string(),
+        )
+        .send()
+        .await
+    {
+        let res: CreateUserResponse = response.json().await.map_err(|_| Error::InvalidOperation)?;
+
+        Ok(json!(res))
+    } else {
+        Err(Error::VosoUnavailable)
+    }
+}

src/routes/channels/message_query.rs

@@ -11,6 +11,12 @@ use rocket_contrib::json::JsonValue;
 use serde::{Deserialize, Serialize};
 use validator::Validate;
 
+#[derive(Serialize, Deserialize, FromFormValue)]
+pub enum Sort {
+    Latest,
+    Oldest,
+}
+
 #[derive(Validate, Serialize, Deserialize, FromForm)]
 pub struct Options {
     #[validate(range(min = 1, max = 100))]
@@ -19,6 +25,7 @@ pub struct Options {
     before: Option<String>,
     #[validate(length(min = 26, max = 26))]
     after: Option<String>,
+    sort: Option<Sort>,
 }
 
 #[get("/<target>/messages?<options..>")]
@@ -47,13 +54,18 @@ pub async fn req(user: User, target: Ref, options: Form<Options>) -> Result<Json
         query.insert("_id", doc! { "$gt": after });
     }
 
+    let sort = if let Sort::Latest = options.sort.as_ref().unwrap_or_else(|| &Sort::Latest) {
+        -1
+    } else {
+        1
+    };
     let mut cursor = get_collection("messages")
         .find(
             query,
             FindOptions::builder()
                 .limit(options.limit.unwrap_or(50))
                 .sort(doc! {
-                    "_id": -1
+                    "_id": sort
                 })
                 .build(),
         )

src/routes/channels/message_send.rs

@@ -1,10 +1,7 @@
 use crate::database::*;
 use crate::util::result::{Error, Result};
 
-use mongodb::{
-    bson::{doc, from_document},
-    options::FindOneOptions,
-};
+use mongodb::{bson::doc, options::FindOneOptions};
 use rocket_contrib::json::{Json, JsonValue};
 use serde::{Deserialize, Serialize};
 use ulid::Ulid;
@@ -26,17 +23,17 @@ pub async fn req(user: User, target: Ref, message: Json<Data>) -> Result<JsonVal
     message
         .validate()
         .map_err(|error| Error::FailedValidation { error })?;
-    
+
     if message.content.len() == 0 && message.attachment.is_none() {
         return Err(Error::EmptyMessage);
     }
 
     let target = target.fetch_channel().await?;
-
     let perm = permissions::PermissionCalculator::new(&user)
         .with_channel(&target)
         .for_channel()
         .await?;
+
     if !perm.get_send_message() {
         Err(Error::MissingPermission)?
     }
@@ -61,51 +58,8 @@ pub async fn req(user: User, target: Ref, message: Json<Data>) -> Result<JsonVal
     }
 
     let id = Ulid::new().to_string();
-    let attachments = get_collection("attachments");
     let attachment = if let Some(attachment_id) = &message.attachment {
-        if let Some(doc) = attachments
-            .find_one(
-                doc! {
-                    "_id": attachment_id,
-                    "message_id": {
-                        "$exists": false
-                    }
-                },
-                None,
-            )
-            .await
-            .map_err(|_| Error::DatabaseError {
-                operation: "find_one",
-                with: "attachment",
-            })?
-        {
-            let attachment = from_document::<File>(doc).map_err(|_| Error::DatabaseError {
-                operation: "from_document",
-                with: "attachment",
-            })?;
-
-            attachments
-                .update_one(
-                    doc! {
-                        "_id": &attachment.id
-                    },
-                    doc! {
-                        "$set": {
-                            "message_id": &id
-                        }
-                    },
-                    None,
-                )
-                .await
-                .map_err(|_| Error::DatabaseError {
-                    operation: "update_one",
-                    with: "attachment",
-                })?;
-
-            Some(attachment)
-        } else {
-            return Err(Error::UnknownAttachment);
-        }
+        Some(File::find_and_use(attachment_id, "attachments", "message", &id).await?)
     } else {
         None
     };
@@ -115,10 +69,11 @@ pub async fn req(user: User, target: Ref, message: Json<Data>) -> Result<JsonVal
         channel: target.id().to_string(),
         author: user.id,
 
-        content: message.content.clone(),
+        content: Content::Text(message.content.clone()),
         attachment,
         nonce: Some(message.nonce.clone()),
         edited: None,
+        embeds: None,
     };
 
     msg.clone().publish(&target).await?;

src/routes/channels/mod.rs

@@ -1,10 +1,13 @@
 use rocket::Route;
 
 mod delete_channel;
+mod edit_channel;
 mod fetch_channel;
+mod fetch_members;
 mod group_add_member;
 mod group_create;
 mod group_remove_member;
+mod join_call;
 mod message_delete;
 mod message_edit;
 mod message_fetch;
@@ -15,7 +18,9 @@ mod message_send;
 pub fn routes() -> Vec<Route> {
     routes![
         fetch_channel::req,
+        fetch_members::req,
         delete_channel::req,
+        edit_channel::req,
         message_send::req,
         message_query::req,
         message_query_stale::req,
@@ -24,6 +29,7 @@ pub fn routes() -> Vec<Route> {
         message_delete::req,
         group_create::req,
         group_add_member::req,
-        group_remove_member::req
+        group_remove_member::req,
+        join_call::req,
     ]
 }

src/routes/onboard/complete.rs

@@ -28,21 +28,22 @@ pub async fn req(session: Session, user: Option<User>, data: Json<Data>) -> Resu
         .map_err(|error| Error::FailedValidation { error })?;
 
     if User::is_username_taken(&data.username).await? {
-        return Err(Error::UsernameTaken)
+        return Err(Error::UsernameTaken);
     }
 
-    get_collection("users").insert_one(
-        doc! {
-            "_id": session.user_id,
-            "username": &data.username
-        },
-        None,
-    )
-    .await
-    .map_err(|_| Error::DatabaseError {
-        operation: "insert_one",
-        with: "user",
-    })?;
+    get_collection("users")
+        .insert_one(
+            doc! {
+                "_id": session.user_id,
+                "username": &data.username
+            },
+            None,
+        )
+        .await
+        .map_err(|_| Error::DatabaseError {
+            operation: "insert_one",
+            with: "user",
+        })?;
 
     Ok(())
 }

src/routes/root.rs

@@ -1,6 +1,6 @@
 use crate::util::variables::{
-    AUTUMN_URL, DISABLE_REGISTRATION, EXTERNAL_WS_URL, HCAPTCHA_SITEKEY, INVITE_ONLY, USE_AUTUMN,
-    USE_EMAIL, USE_HCAPTCHA, VAPID_PUBLIC_KEY,
+    APP_URL, JANUARY_URL, AUTUMN_URL, DISABLE_REGISTRATION, EXTERNAL_WS_URL, HCAPTCHA_SITEKEY, INVITE_ONLY,
+    USE_AUTUMN, USE_JANUARY, USE_EMAIL, USE_HCAPTCHA, USE_VOSO, VAPID_PUBLIC_KEY, VOSO_URL, VOSO_WS_HOST,
 };
 
 use mongodb::bson::doc;
@@ -9,7 +9,7 @@ use rocket_contrib::json::JsonValue;
 #[get("/")]
 pub async fn root() -> JsonValue {
     json!({
-        "revolt": "0.3.3-alpha.8",
+        "revolt": crate::version::VERSION,
         "features": {
             "registration": !*DISABLE_REGISTRATION,
             "captcha": {
@@ -21,9 +21,19 @@ pub async fn root() -> JsonValue {
             "autumn": {
                 "enabled": *USE_AUTUMN,
                 "url": *AUTUMN_URL
+            },
+            "january": {
+                "enabled": *USE_JANUARY,
+                "url": *JANUARY_URL
+            },
+            "voso": {
+                "enabled": *USE_VOSO,
+                "url": *VOSO_URL,
+                "ws": *VOSO_WS_HOST
             }
         },
         "ws": *EXTERNAL_WS_URL,
+        "app": *APP_URL,
         "vapid": *VAPID_PUBLIC_KEY
     })
 }

src/routes/users/add_friend.rs

@@ -31,6 +31,8 @@ pub async fn req(user: User, username: String) -> Result<JsonValue> {
         with: "user",
     })?;
 
+    let target_user = Ref::from(target_id.to_string())?.fetch_user().await?;
+
     match get_relationship(&user, &target_id) {
         RelationshipStatus::User => return Err(Error::NoEffect),
         RelationshipStatus::Friend => return Err(Error::AlreadyFriends),
@@ -65,21 +67,26 @@ pub async fn req(user: User, username: String) -> Result<JsonValue> {
                 )
             ) {
                 Ok(_) => {
-                    try_join!(
-                        ClientboundNotification::UserRelationship {
-                            id: user.id.clone(),
-                            user: target_id.to_string(),
-                            status: RelationshipStatus::Friend
-                        }
-                        .publish(user.id.clone()),
-                        ClientboundNotification::UserRelationship {
-                            id: target_id.to_string(),
-                            user: user.id.clone(),
-                            status: RelationshipStatus::Friend
-                        }
-                        .publish(target_id.to_string())
-                    )
-                    .ok();
+                    let target_user = target_user
+                        .from_override(&user, RelationshipStatus::Friend)
+                        .await?;
+                    let user = user
+                        .from_override(&target_user, RelationshipStatus::Friend)
+                        .await?;
+
+                    ClientboundNotification::UserRelationship {
+                        id: user.id.clone(),
+                        user: target_user,
+                        status: RelationshipStatus::Friend,
+                    }
+                    .publish(user.id.clone());
+
+                    ClientboundNotification::UserRelationship {
+                        id: target_id.to_string(),
+                        user,
+                        status: RelationshipStatus::Friend,
+                    }
+                    .publish(target_id.to_string());
 
                     Ok(json!({ "status": "Friend" }))
                 }
@@ -121,21 +128,26 @@ pub async fn req(user: User, username: String) -> Result<JsonValue> {
                 )
             ) {
                 Ok(_) => {
-                    try_join!(
-                        ClientboundNotification::UserRelationship {
-                            id: user.id.clone(),
-                            user: target_id.to_string(),
-                            status: RelationshipStatus::Outgoing
-                        }
-                        .publish(user.id.clone()),
-                        ClientboundNotification::UserRelationship {
-                            id: target_id.to_string(),
-                            user: user.id.clone(),
-                            status: RelationshipStatus::Incoming
-                        }
-                        .publish(target_id.to_string())
-                    )
-                    .ok();
+                    let target_user = target_user
+                        .from_override(&user, RelationshipStatus::Outgoing)
+                        .await?;
+                    let user = user
+                        .from_override(&target_user, RelationshipStatus::Incoming)
+                        .await?;
+
+                    ClientboundNotification::UserRelationship {
+                        id: user.id.clone(),
+                        user: target_user,
+                        status: RelationshipStatus::Outgoing,
+                    }
+                    .publish(user.id.clone());
+
+                    ClientboundNotification::UserRelationship {
+                        id: target_id.to_string(),
+                        user,
+                        status: RelationshipStatus::Incoming,
+                    }
+                    .publish(target_id.to_string());
 
                     Ok(json!({ "status": "Outgoing" }))
                 }

src/routes/users/block_user.rs

@@ -10,6 +10,8 @@ use rocket_contrib::json::JsonValue;
 pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
     let col = get_collection("users");
 
+    let target = target.fetch_user().await?;
+
     match get_relationship(&user, &target.id) {
         RelationshipStatus::User | RelationshipStatus::Blocked => Err(Error::NoEffect),
         RelationshipStatus::BlockedOther => {
@@ -33,12 +35,10 @@ pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
 
             ClientboundNotification::UserRelationship {
                 id: user.id.clone(),
-                user: target.id.clone(),
+                user: target,
                 status: RelationshipStatus::Blocked,
             }
-            .publish(user.id.clone())
-            .await
-            .ok();
+            .publish(user.id.clone());
 
             Ok(json!({ "status": "Blocked" }))
         }
@@ -74,21 +74,27 @@ pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
                 )
             ) {
                 Ok(_) => {
-                    try_join!(
-                        ClientboundNotification::UserRelationship {
-                            id: user.id.clone(),
-                            user: target.id.clone(),
-                            status: RelationshipStatus::Blocked
-                        }
-                        .publish(user.id.clone()),
-                        ClientboundNotification::UserRelationship {
-                            id: target.id.clone(),
-                            user: user.id.clone(),
-                            status: RelationshipStatus::BlockedOther
-                        }
-                        .publish(target.id.clone())
-                    )
-                    .ok();
+                    let target = target
+                        .from_override(&user, RelationshipStatus::Blocked)
+                        .await?;
+                    let user = user
+                        .from_override(&target, RelationshipStatus::BlockedOther)
+                        .await?;
+                    let target_id = target.id.clone();
+
+                    ClientboundNotification::UserRelationship {
+                        id: user.id.clone(),
+                        user: target,
+                        status: RelationshipStatus::Blocked,
+                    }
+                    .publish(user.id.clone());
+
+                    ClientboundNotification::UserRelationship {
+                        id: target_id.clone(),
+                        user,
+                        status: RelationshipStatus::BlockedOther,
+                    }
+                    .publish(target_id);
 
                     Ok(json!({ "status": "Blocked" }))
                 }
@@ -128,21 +134,27 @@ pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
                 )
             ) {
                 Ok(_) => {
-                    try_join!(
-                        ClientboundNotification::UserRelationship {
-                            id: user.id.clone(),
-                            user: target.id.clone(),
-                            status: RelationshipStatus::Blocked
-                        }
-                        .publish(user.id.clone()),
-                        ClientboundNotification::UserRelationship {
-                            id: target.id.clone(),
-                            user: user.id.clone(),
-                            status: RelationshipStatus::BlockedOther
-                        }
-                        .publish(target.id.clone())
-                    )
-                    .ok();
+                    let target = target
+                        .from_override(&user, RelationshipStatus::Blocked)
+                        .await?;
+                    let user = user
+                        .from_override(&target, RelationshipStatus::BlockedOther)
+                        .await?;
+                    let target_id = target.id.clone();
+
+                    ClientboundNotification::UserRelationship {
+                        id: user.id.clone(),
+                        user: target,
+                        status: RelationshipStatus::Blocked,
+                    }
+                    .publish(user.id.clone());
+
+                    ClientboundNotification::UserRelationship {
+                        id: target_id.clone(),
+                        user,
+                        status: RelationshipStatus::BlockedOther,
+                    }
+                    .publish(target_id);
 
                     Ok(json!({ "status": "Blocked" }))
                 }

src/routes/users/change_username.rs

@@ -0,0 +1,66 @@
+use crate::database::*;
+use crate::notifications::events::ClientboundNotification;
+use crate::util::result::{Error, Result};
+
+use mongodb::bson::doc;
+use rauth::auth::{Auth, Session};
+use regex::Regex;
+use rocket::State;
+use rocket_contrib::json::Json;
+use serde::{Deserialize, Serialize};
+use validator::Validate;
+
+// ! FIXME: should be global somewhere; maybe use config(?)
+lazy_static! {
+    static ref RE_USERNAME: Regex = Regex::new(r"^[a-zA-Z0-9_.]+$").unwrap();
+}
+
+#[derive(Validate, Serialize, Deserialize)]
+pub struct Data {
+    #[validate(length(min = 2, max = 32), regex = "RE_USERNAME")]
+    username: Option<String>,
+    #[validate(length(min = 8, max = 72))]
+    password: String,
+}
+
+#[patch("/<_ignore_id>/username", data = "<data>")]
+pub async fn req(
+    auth: State<'_, Auth>,
+    session: Session,
+    user: User,
+    data: Json<Data>,
+    _ignore_id: String,
+) -> Result<()> {
+    data.validate()
+        .map_err(|error| Error::FailedValidation { error })?;
+
+    auth.verify_password(&session, data.password.clone())
+        .await
+        .map_err(|_| Error::InvalidCredentials)?;
+
+    let mut set = doc! {};
+    if let Some(username) = &data.username {
+        if User::is_username_taken(&username).await? {
+            return Err(Error::UsernameTaken);
+        }
+
+        set.insert("username", username.clone());
+    }
+
+    get_collection("users")
+        .update_one(doc! { "_id": &user.id }, doc! { "$set": set }, None)
+        .await
+        .map_err(|_| Error::DatabaseError {
+            operation: "update_one",
+            with: "user",
+        })?;
+
+    ClientboundNotification::UserUpdate {
+        id: user.id.clone(),
+        data: json!(data.0),
+        clear: None,
+    }
+    .publish(user.id.clone());
+
+    Ok(())
+}

src/routes/users/edit_user.rs

@@ -0,0 +1,179 @@
+use crate::notifications::events::ClientboundNotification;
+use crate::util::result::{Error, Result};
+use crate::{database::*, notifications::events::RemoveUserField};
+
+use mongodb::bson::{doc, to_document};
+use rocket_contrib::json::Json;
+use serde::{Deserialize, Serialize};
+use validator::Validate;
+
+#[derive(Validate, Serialize, Deserialize, Debug)]
+pub struct UserProfileData {
+    #[validate(length(min = 0, max = 2000))]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    content: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[validate(length(min = 1, max = 128))]
+    background: Option<String>,
+}
+
+#[derive(Validate, Serialize, Deserialize)]
+pub struct Data {
+    #[validate]
+    status: Option<UserStatus>,
+    #[validate]
+    profile: Option<UserProfileData>,
+    #[validate(length(min = 1, max = 128))]
+    avatar: Option<String>,
+    remove: Option<RemoveUserField>,
+}
+
+#[patch("/<_ignore_id>", data = "<data>")]
+pub async fn req(user: User, data: Json<Data>, _ignore_id: String) -> Result<()> {
+    let mut data = data.into_inner();
+
+    data.validate()
+        .map_err(|error| Error::FailedValidation { error })?;
+
+    if data.status.is_none()
+        && data.profile.is_none()
+        && data.avatar.is_none()
+        && data.remove.is_none()
+    {
+        return Ok(());
+    }
+
+    let mut unset = doc! {};
+    let mut set = doc! {};
+
+    let mut remove_background = false;
+    let mut remove_avatar = false;
+
+    if let Some(remove) = &data.remove {
+        match remove {
+            RemoveUserField::ProfileContent => {
+                unset.insert("profile.content", 1);
+            }
+            RemoveUserField::ProfileBackground => {
+                unset.insert("profile.background", 1);
+                remove_background = true;
+            }
+            RemoveUserField::StatusText => {
+                unset.insert("status.text", 1);
+            }
+            RemoveUserField::Avatar => {
+                unset.insert("avatar", 1);
+                remove_avatar = true;
+            }
+        }
+    }
+
+    if let Some(status) = &data.status {
+        set.insert(
+            "status",
+            to_document(&status).map_err(|_| Error::DatabaseError {
+                operation: "to_document",
+                with: "status",
+            })?,
+        );
+    }
+
+    if let Some(profile) = data.profile {
+        if let Some(content) = profile.content {
+            set.insert("profile.content", content);
+        }
+
+        if let Some(attachment_id) = profile.background {
+            let attachment =
+                File::find_and_use(&attachment_id, "backgrounds", "user", &user.id).await?;
+            set.insert(
+                "profile.background",
+                to_document(&attachment).map_err(|_| Error::DatabaseError {
+                    operation: "to_document",
+                    with: "attachment",
+                })?,
+            );
+
+            remove_background = true;
+        }
+    }
+
+    let avatar = std::mem::replace(&mut data.avatar, None);
+    let attachment = if let Some(attachment_id) = avatar {
+        let attachment = File::find_and_use(&attachment_id, "avatars", "user", &user.id).await?;
+        set.insert(
+            "avatar",
+            to_document(&attachment).map_err(|_| Error::DatabaseError {
+                operation: "to_document",
+                with: "attachment",
+            })?,
+        );
+
+        remove_avatar = true;
+        Some(attachment)
+    } else {
+        None
+    };
+
+    let mut operations = doc! {};
+    if set.len() > 0 {
+        operations.insert("$set", set);
+    }
+
+    if unset.len() > 0 {
+        operations.insert("$unset", unset);
+    }
+
+    if operations.len() > 0 {
+        get_collection("users")
+            .update_one(doc! { "_id": &user.id }, operations, None)
+            .await
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "user",
+            })?;
+    }
+
+    if let Some(status) = &data.status {
+        ClientboundNotification::UserUpdate {
+            id: user.id.clone(),
+            data: json!({ "status": status }),
+            clear: None,
+        }
+        .publish(user.id.clone());
+    }
+
+    if let Some(avatar) = attachment {
+        ClientboundNotification::UserUpdate {
+            id: user.id.clone(),
+            data: json!({ "avatar": avatar }),
+            clear: None,
+        }
+        .publish(user.id.clone());
+    }
+
+    if let Some(clear) = data.remove {
+        ClientboundNotification::UserUpdate {
+            id: user.id.clone(),
+            data: json!({}),
+            clear: Some(clear),
+        }
+        .publish(user.id.clone());
+    }
+
+    if remove_avatar {
+        if let Some(old_avatar) = user.avatar {
+            old_avatar.delete().await?;
+        }
+    }
+
+    if remove_background {
+        if let Some(profile) = user.profile {
+            if let Some(old_background) = profile.background {
+                old_background.delete().await?;
+            }
+        }
+    }
+
+    Ok(())
+}

src/routes/users/fetch_profile.rs

@@ -0,0 +1,24 @@
+use crate::database::*;
+use crate::util::result::{Error, Result};
+
+use mongodb::bson::doc;
+use rocket_contrib::json::JsonValue;
+
+#[get("/<target>/profile")]
+pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
+    let target = target.fetch_user().await?;
+    let perm = permissions::PermissionCalculator::new(&user)
+        .with_user(&target)
+        .for_user_given()
+        .await?;
+
+    if !perm.get_view_profile() {
+        Err(Error::MissingPermission)?
+    }
+
+    if target.profile.is_some() {
+        Ok(json!(target.profile))
+    } else {
+        Ok(json!({}))
+    }
+}

src/routes/users/find_mutual.rs

@@ -12,8 +12,8 @@ pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
         .find(
             doc! {
                 "$and": [
-                    { "relations._id": &user.id, "relations.status": "Friend" },
-                    { "relations._id": &target.id, "relations.status": "Friend" }
+                    { "relations": { "$elemMatch": { "_id": &user.id, "status": "Friend" } } },
+                    { "relations": { "$elemMatch": { "_id": &target.id, "status": "Friend" } } }
                 ]
             },
             FindOptions::builder().projection(doc! { "_id": 1 }).build(),

src/routes/users/get_avatar.rs

@@ -1,49 +0,0 @@
-use md5;
-use mongodb::bson::doc;
-use mongodb::options::FindOneOptions;
-use rocket::response::Redirect;
-use urlencoding;
-
-use crate::database::*;
-use crate::util::result::{Error, Result};
-use crate::util::variables::PUBLIC_URL;
-
-#[get("/<target>/avatar")]
-pub async fn req(target: Ref) -> Result<Redirect> {
-    let doc = get_collection("accounts")
-        .find_one(
-            doc! {
-                "_id": &target.id
-            },
-            FindOneOptions::builder()
-                .projection(doc! { "email": 1 })
-                .build(),
-        )
-        .await
-        .map_err(|_| Error::DatabaseError {
-            operation: "find_one",
-            with: "user",
-        })?
-        .ok_or_else(|| Error::UnknownUser)?;
-
-    let email = doc
-        .get_str("email")
-        .map_err(|_| Error::DatabaseError {
-            operation: "get_str(email)",
-            with: "user",
-        })?
-        .to_lowercase();
-
-    let url = format!(
-        "https://www.gravatar.com/avatar/{:x}?s=128&d={}",
-        md5::compute(email),
-        urlencoding::encode(&format!(
-            "{}/users/{}/default_avatar",
-            *PUBLIC_URL, &target.id
-        ))
-    );
-
-    dbg!(&url);
-
-    Ok(Redirect::to(url))
-}

src/routes/users/mod.rs

@@ -2,12 +2,14 @@ use rocket::Route;
 
 mod add_friend;
 mod block_user;
+mod change_username;
+mod edit_user;
 mod fetch_dms;
+mod fetch_profile;
 mod fetch_relationship;
 mod fetch_relationships;
 mod fetch_user;
 mod find_mutual;
-mod get_avatar;
 mod get_default_avatar;
 mod open_dm;
 mod remove_friend;
@@ -17,8 +19,10 @@ pub fn routes() -> Vec<Route> {
     routes![
         // User Information
         fetch_user::req,
+        edit_user::req,
+        change_username::req,
         get_default_avatar::req,
-        get_avatar::req,
+        fetch_profile::req,
         // Direct Messaging
         fetch_dms::req,
         open_dm::req,

src/routes/users/remove_friend.rs

@@ -10,6 +10,8 @@ use rocket_contrib::json::JsonValue;
 pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
     let col = get_collection("users");
 
+    let target = target.fetch_user().await?;
+
     match get_relationship(&user, &target.id) {
         RelationshipStatus::Friend
         | RelationshipStatus::Outgoing
@@ -43,21 +45,27 @@ pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
                 )
             ) {
                 Ok(_) => {
-                    try_join!(
-                        ClientboundNotification::UserRelationship {
-                            id: user.id.clone(),
-                            user: target.id.clone(),
-                            status: RelationshipStatus::None
-                        }
-                        .publish(user.id.clone()),
-                        ClientboundNotification::UserRelationship {
-                            id: target.id.clone(),
-                            user: user.id.clone(),
-                            status: RelationshipStatus::None
-                        }
-                        .publish(target.id.clone())
-                    )
-                    .ok();
+                    let target = target
+                        .from_override(&user, RelationshipStatus::None)
+                        .await?;
+                    let user = user
+                        .from_override(&target, RelationshipStatus::None)
+                        .await?;
+                    let target_id = target.id.clone();
+
+                    ClientboundNotification::UserRelationship {
+                        id: user.id.clone(),
+                        user: target,
+                        status: RelationshipStatus::None,
+                    }
+                    .publish(user.id.clone());
+
+                    ClientboundNotification::UserRelationship {
+                        id: target_id.clone(),
+                        user,
+                        status: RelationshipStatus::None,
+                    }
+                    .publish(target_id);
 
                     Ok(json!({ "status": "None" }))
                 }

src/routes/users/unblock_user.rs

@@ -9,97 +9,103 @@ use rocket_contrib::json::JsonValue;
 #[delete("/<target>/block")]
 pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
     let col = get_collection("users");
+    let target = target.fetch_user().await?;
 
     match get_relationship(&user, &target.id) {
-        RelationshipStatus::Blocked => {
-            match get_relationship(&target.fetch_user().await?, &user.id) {
-                RelationshipStatus::Blocked => {
+        RelationshipStatus::Blocked => match get_relationship(&target, &user.id) {
+            RelationshipStatus::Blocked => {
+                col.update_one(
+                    doc! {
+                        "_id": &user.id,
+                        "relations._id": &target.id
+                    },
+                    doc! {
+                        "$set": {
+                            "relations.$.status": "BlockedOther"
+                        }
+                    },
+                    None,
+                )
+                .await
+                .map_err(|_| Error::DatabaseError {
+                    operation: "update_one",
+                    with: "user",
+                })?;
+
+                let target = target
+                    .from_override(&user, RelationshipStatus::BlockedOther)
+                    .await?;
+                ClientboundNotification::UserRelationship {
+                    id: user.id.clone(),
+                    user: target,
+                    status: RelationshipStatus::BlockedOther,
+                }
+                .publish(user.id.clone());
+
+                Ok(json!({ "status": "BlockedOther" }))
+            }
+            RelationshipStatus::BlockedOther => {
+                match try_join!(
                     col.update_one(
                         doc! {
-                            "_id": &user.id,
-                            "relations._id": &target.id
+                            "_id": &user.id
                         },
                         doc! {
-                            "$set": {
-                                "relations.$.status": "BlockedOther"
+                            "$pull": {
+                                "relations": {
+                                    "_id": &target.id
+                                }
                             }
                         },
-                        None,
+                        None
+                    ),
+                    col.update_one(
+                        doc! {
+                            "_id": &target.id
+                        },
+                        doc! {
+                            "$pull": {
+                                "relations": {
+                                    "_id": &user.id
+                                }
+                            }
+                        },
+                        None
                     )
-                    .await
-                    .map_err(|_| Error::DatabaseError {
+                ) {
+                    Ok(_) => {
+                        let target = target
+                            .from_override(&user, RelationshipStatus::None)
+                            .await?;
+                        let user = user
+                            .from_override(&target, RelationshipStatus::None)
+                            .await?;
+                        let target_id = target.id.clone();
+
+                        ClientboundNotification::UserRelationship {
+                            id: user.id.clone(),
+                            user: target,
+                            status: RelationshipStatus::None,
+                        }
+                        .publish(user.id.clone());
+
+                        ClientboundNotification::UserRelationship {
+                            id: target_id.clone(),
+                            user: user,
+                            status: RelationshipStatus::None,
+                        }
+                        .publish(target_id);
+
+                        Ok(json!({ "status": "None" }))
+                    }
+                    Err(_) => Err(Error::DatabaseError {
                         operation: "update_one",
                         with: "user",
-                    })?;
-
-                    ClientboundNotification::UserRelationship {
-                        id: user.id.clone(),
-                        user: target.id.clone(),
-                        status: RelationshipStatus::BlockedOther,
-                    }
-                    .publish(user.id.clone())
-                    .await
-                    .ok();
-
-                    Ok(json!({ "status": "BlockedOther" }))
+                    }),
                 }
-                RelationshipStatus::BlockedOther => {
-                    match try_join!(
-                        col.update_one(
-                            doc! {
-                                "_id": &user.id
-                            },
-                            doc! {
-                                "$pull": {
-                                    "relations": {
-                                        "_id": &target.id
-                                    }
-                                }
-                            },
-                            None
-                        ),
-                        col.update_one(
-                            doc! {
-                                "_id": &target.id
-                            },
-                            doc! {
-                                "$pull": {
-                                    "relations": {
-                                        "_id": &user.id
-                                    }
-                                }
-                            },
-                            None
-                        )
-                    ) {
-                        Ok(_) => {
-                            try_join!(
-                                ClientboundNotification::UserRelationship {
-                                    id: user.id.clone(),
-                                    user: target.id.clone(),
-                                    status: RelationshipStatus::None
-                                }
-                                .publish(user.id.clone()),
-                                ClientboundNotification::UserRelationship {
-                                    id: target.id.clone(),
-                                    user: user.id.clone(),
-                                    status: RelationshipStatus::None
-                                }
-                                .publish(target.id.clone())
-                            )
-                            .ok();
-
-                            Ok(json!({ "status": "None" }))
-                        }
-                        Err(_) => Err(Error::DatabaseError {
-                            operation: "update_one",
-                            with: "user",
-                        }),
-                    }
-                }
-                _ => Err(Error::InternalError),
             }
-        }
+            _ => Err(Error::InternalError),
+        },
         _ => Err(Error::NoEffect),
     }
 }

src/util/result.rs

@@ -67,8 +67,12 @@ pub enum Error {
     MissingPermission,
     #[snafu(display("Operation cannot be performed on this object."))]
     InvalidOperation,
+    #[snafu(display("Email or password is incorrect."))]
+    InvalidCredentials,
     #[snafu(display("Already created an object with this nonce."))]
     DuplicateNonce,
+    #[snafu(display("Voso is not enabled on this instance."))]
+    VosoUnavailable,
     #[snafu(display("This request had no effect."))]
     NoEffect,
 }
@@ -106,7 +110,9 @@ impl<'r> Responder<'r, 'static> for Error {
             Error::MissingPermission => Status::Forbidden,
             Error::InvalidOperation => Status::BadRequest,
             Error::TooManyIds => Status::BadRequest,
+            Error::InvalidCredentials => Status::Forbidden,
             Error::DuplicateNonce => Status::Conflict,
+            Error::VosoUnavailable => Status::BadRequest,
             Error::NoEffect => Status::Ok,
         };
 

src/util/variables.rs

@@ -12,11 +12,21 @@ lazy_static! {
     pub static ref PUBLIC_URL: String =
         env::var("REVOLT_PUBLIC_URL").expect("Missing REVOLT_PUBLIC_URL environment variable.");
     pub static ref APP_URL: String =
-        env::var("REVOLT_APP_URL").unwrap_or_else(|_| "https://app.revolt.chat".to_string());
+        env::var("REVOLT_APP_URL").expect("Missing REVOLT_APP_URL environment variable.");
     pub static ref EXTERNAL_WS_URL: String =
         env::var("REVOLT_EXTERNAL_WS_URL").expect("Missing REVOLT_EXTERNAL_WS_URL environment variable.");
+
     pub static ref AUTUMN_URL: String =
         env::var("AUTUMN_PUBLIC_URL").unwrap_or_else(|_| "https://example.com".to_string());
+    pub static ref JANUARY_URL: String =
+        env::var("JANUARY_PUBLIC_URL").unwrap_or_else(|_| "https://example.com".to_string());
+    pub static ref VOSO_URL: String =
+        env::var("VOSO_PUBLIC_URL").unwrap_or_else(|_| "https://example.com".to_string());
+    pub static ref VOSO_WS_HOST: String =
+        env::var("VOSO_WS_HOST").unwrap_or_else(|_| "wss://example.com".to_string());
+    pub static ref VOSO_MANAGE_TOKEN: String =
+        env::var("VOSO_MANAGE_TOKEN").unwrap_or_else(|_| "0".to_string());
+
     pub static ref HCAPTCHA_KEY: String =
         env::var("REVOLT_HCAPTCHA_KEY").unwrap_or_else(|_| "0x0000000000000000000000000000000000000000".to_string());
     pub static ref HCAPTCHA_SITEKEY: String =
@@ -39,6 +49,8 @@ lazy_static! {
     pub static ref USE_HCAPTCHA: bool = env::var("REVOLT_HCAPTCHA_KEY").is_ok();
     pub static ref USE_PROMETHEUS: bool = env::var("REVOLT_ENABLE_PROMETHEUS").map_or(false, |v| v == "1");
     pub static ref USE_AUTUMN: bool = env::var("AUTUMN_PUBLIC_URL").is_ok();
+    pub static ref USE_JANUARY: bool = env::var("JANUARY_PUBLIC_URL").is_ok();
+    pub static ref USE_VOSO: bool = env::var("VOSO_PUBLIC_URL").is_ok() && env::var("VOSO_MANAGE_TOKEN").is_ok();
 
     // SMTP Settings
     pub static ref SMTP_HOST: String =
@@ -55,6 +67,14 @@ lazy_static! {
 }
 
 pub fn preflight_checks() {
+    format!("{}", *APP_URL);
+    format!("{}", *MONGO_URI);
+    format!("{}", *PUBLIC_URL);
+    format!("{}", *EXTERNAL_WS_URL);
+
+    format!("{}", *VAPID_PRIVATE_KEY);
+    format!("{}", *VAPID_PUBLIC_KEY);
+
     if *USE_EMAIL == false {
         #[cfg(not(debug_assertions))]
         if !env::var("REVOLT_UNSAFE_NO_EMAIL").map_or(false, |v| v == *"1") {

src/version.rs

@@ -0,0 +1 @@
+pub const VERSION: &str = "0.4.1-alpha.11";