fix: ensure list matches

feat: add `joined_at` property to members
feat: add `timeout` property to members (non-functional)

Cargo.lock

@@ -1995,9 +1995,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.12.0"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7709cef83f0c1f58f666e746a08b21e0085f7440fa6a29cc194d68aac97a4225"
+checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
 
 [[package]]
 name = "opaque-debug"
@@ -2505,7 +2505,7 @@ dependencies = [
 [[package]]
 name = "rauth"
 version = "1.0.0"
-source = "git+https://github.com/insertish/rauth?rev=c2acaf6b31213e3969f8b48f9deed3daa125d394#c2acaf6b31213e3969f8b48f9deed3daa125d394"
+source = "git+https://github.com/insertish/rauth?rev=9c3f9bb58a549a51546bd748274130ac4a667cb4#9c3f9bb58a549a51546bd748274130ac4a667cb4"
 dependencies = [
  "async-std",
  "async-trait",
@@ -2714,7 +2714,7 @@ dependencies = [
 
 [[package]]
 name = "revolt-bonfire"
-version = "1.0.6-patch.2"
+version = "0.5.5"
 dependencies = [
  "async-std",
  "async-tungstenite",
@@ -2730,7 +2730,7 @@ dependencies = [
 
 [[package]]
 name = "revolt-delta"
-version = "0.5.4"
+version = "0.5.5"
 dependencies = [
  "async-channel",
  "async-std",
@@ -2792,6 +2792,7 @@ dependencies = [
  "nanoid",
  "num_enum",
  "okapi",
+ "once_cell",
  "optional_struct",
  "pretty_env_logger",
  "rauth",
@@ -2986,7 +2987,7 @@ dependencies = [
 [[package]]
 name = "rocket_rauth"
 version = "1.0.0"
-source = "git+https://github.com/insertish/rauth?rev=c2acaf6b31213e3969f8b48f9deed3daa125d394#c2acaf6b31213e3969f8b48f9deed3daa125d394"
+source = "git+https://github.com/insertish/rauth?rev=9c3f9bb58a549a51546bd748274130ac4a667cb4#9c3f9bb58a549a51546bd748274130ac4a667cb4"
 dependencies = [
  "okapi",
  "rauth",

crates/bonfire/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "revolt-bonfire"
-version = "1.0.6-patch.2"
+version = "0.5.5"
 license = "AGPL-3.0-or-later"
 edition = "2021"
 

crates/delta/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "revolt-delta"
-version = "0.5.4"
+version = "0.5.5"
 license = "AGPL-3.0-or-later"
 authors = ["Paul Makles <paulmakles@gmail.com>"]
 edition = "2018"
@@ -52,7 +52,7 @@ mobc-redis = { version = "0.7.0", default-features = false, features = ["async-s
 # web
 rocket = { version = "0.5.0-rc.2", default-features = false, features = ["json"] }
 rocket_empty = { git = "https://github.com/insertish/rocket_empty", branch = "master" }
-rocket_rauth = { git = "https://github.com/insertish/rauth", rev = "c2acaf6b31213e3969f8b48f9deed3daa125d394" }
+rocket_rauth = { git = "https://github.com/insertish/rauth", rev = "9c3f9bb58a549a51546bd748274130ac4a667cb4" }
 
 # spec generation
 schemars = "0.8.8"

crates/delta/src/routes/channels/channel_edit.rs

@@ -16,19 +16,18 @@ use validator::Validate;
 pub struct DataEditChannel {
     /// Channel name
     #[validate(length(min = 1, max = 32))]
-    #[serde(skip_serializing_if = "Option::is_none")]
     name: Option<String>,
     /// Channel description
     #[validate(length(min = 0, max = 1024))]
-    #[serde(skip_serializing_if = "Option::is_none")]
     description: Option<String>,
+    /// Group owner
+    owner: Option<String>,
     /// Icon
     ///
     /// Provide an Autumn attachment Id.
     #[validate(length(min = 1, max = 128))]
     icon: Option<String>,
     /// Whether this channel is age-restricted
-    #[serde(skip_serializing_if = "Option::is_none")]
     nsfw: Option<bool>,
     #[validate(length(min = 1))]
     remove: Option<Vec<FieldsChannel>>,
@@ -59,12 +58,47 @@ pub async fn req(
         && data.description.is_none()
         && data.icon.is_none()
         && data.nsfw.is_none()
+        && data.owner.is_none()
         && data.remove.is_none()
     {
         return Ok(Json(channel));
     }
 
     let mut partial: PartialChannel = Default::default();
+
+    // Transfer group ownership
+    if let Some(new_owner) = data.owner {
+        if let Channel::Group {
+            owner, recipients, ..
+        } = &mut channel
+        {
+            // Make sure we are the owner of this group
+            if owner != &user.id {
+                return Err(Error::NotOwner);
+            }
+
+            // Ensure user is part of group
+            if !recipients.contains(&new_owner) {
+                return Err(Error::NotInGroup);
+            }
+
+            // Transfer ownership
+            let old_owner = std::mem::replace(owner, new_owner.to_string());
+
+            // Notify clients
+            SystemMessage::ChannelOwnershipChanged {
+                from: old_owner,
+                to: new_owner,
+            }
+        } else {
+            return Err(Error::InvalidOperation);
+        }
+        .into_message(channel.id().to_string())
+        .create(db, &channel, None)
+        .await
+        .ok();
+    }
+
     match &mut channel {
         Channel::Group {
             id,

crates/delta/src/routes/channels/message_clear_reactions.rs

@@ -0,0 +1,34 @@
+use revolt_quark::{
+    models::{message::PartialMessage, User},
+    perms, Db, EmptyResponse, Permission, Ref, Result,
+};
+
+/// # Remove All Reactions from Message
+///
+/// Remove your own, someone else's or all of a given reaction.
+///
+/// Requires `ManageMessages` permission.
+#[openapi(tag = "Interactions")]
+#[delete("/<target>/messages/<msg>/reactions")]
+pub async fn clear_reactions(db: &Db, user: User, target: Ref, msg: Ref) -> Result<EmptyResponse> {
+    let channel = target.as_channel(db).await?;
+    perms(&user)
+        .channel(&channel)
+        .throw_permission_and_view_channel(db, Permission::ManageMessages)
+        .await?;
+
+    // Fetch relevant message
+    let mut message = msg.as_message_in(db, channel.id()).await?;
+
+    // Clear reactions
+    message
+        .update(
+            db,
+            PartialMessage {
+                reactions: Some(Default::default()),
+                ..Default::default()
+            },
+        )
+        .await
+        .map(|_| EmptyResponse)
+}

crates/delta/src/routes/channels/message_react.rs

@@ -0,0 +1,29 @@
+use revolt_quark::{models::User, perms, Db, EmptyResponse, Permission, Ref, Result};
+
+/// # Add Reaction to Message
+///
+/// React to a given message.
+#[openapi(tag = "Interactions")]
+#[put("/<target>/messages/<msg>/reactions/<emoji>")]
+pub async fn react_message(
+    db: &Db,
+    user: User,
+    target: Ref,
+    msg: Ref,
+    emoji: Ref,
+) -> Result<EmptyResponse> {
+    let channel = target.as_channel(db).await?;
+    perms(&user)
+        .channel(&channel)
+        .throw_permission_and_view_channel(db, Permission::React)
+        .await?;
+
+    // Fetch relevant message
+    let message = msg.as_message_in(db, channel.id()).await?;
+
+    // Add the reaction
+    message
+        .add_reaction(db, &user, &emoji.id)
+        .await
+        .map(|_| EmptyResponse)
+}

crates/delta/src/routes/channels/message_send.rs

@@ -2,7 +2,7 @@ use std::collections::HashSet;
 
 use revolt_quark::{
     models::{
-        message::{Masquerade, Reply, SendableEmbed},
+        message::{Interactions, Masquerade, Reply, SendableEmbed},
         Message, User,
     },
     perms,
@@ -40,6 +40,8 @@ pub struct DataMessageSend {
     /// Masquerade to apply to this message
     #[validate]
     masquerade: Option<Masquerade>,
+    /// Information about how this message should be interacted with
+    interactions: Option<Interactions>,
 }
 
 lazy_static! {
@@ -86,6 +88,7 @@ pub async fn message_send(
         channel: channel.id().to_string(),
         author: user.id.clone(),
         masquerade: data.masquerade,
+        interactions: data.interactions.unwrap_or_default(),
         ..Default::default()
     };
 
@@ -100,13 +103,22 @@ pub async fn message_send(
     }
 
     // 2. Verify permissions for masquerade.
-    if message.masquerade.is_some() {
+    if let Some(masq) = &message.masquerade {
         permissions
             .throw_permission(db, Permission::Masquerade)
             .await?;
+
+        if masq.colour.is_some() {
+            permissions
+                .throw_permission(db, Permission::ManageRole)
+                .await?;
+        }
     }
 
-    // 3. Verify replies are valid.
+    // 3. Ensure interactions information is correct
+    message.interactions.validate(db).await?;
+
+    // 4. Verify replies are valid.
     let mut replies = HashSet::new();
     if let Some(entries) = data.replies {
         if entries.len() > 5 {
@@ -139,7 +151,7 @@ pub async fn message_send(
             .replace(replies.into_iter().collect::<Vec<String>>());
     }
 
-    // 4. Process included embeds.
+    // 5. Process included embeds.
     let mut embeds = vec![];
     if let Some(sendable_embeds) = data.embeds {
         for sendable_embed in sendable_embeds {
@@ -151,7 +163,7 @@ pub async fn message_send(
         message.embeds.replace(embeds);
     }
 
-    // 5. Add attachments to message.
+    // 6. Add attachments to message.
     let mut attachments = vec![];
     if let Some(ids) = &data.attachments {
         if !ids.is_empty() {
@@ -177,10 +189,10 @@ pub async fn message_send(
         message.attachments.replace(attachments);
     }
 
-    // 6. Set content
+    // 7. Set content
     message.content = data.content;
 
-    // 7. Pass-through nonce value for clients
+    // 8. Pass-through nonce value for clients
     message.nonce = Some(idempotency.into_key());
 
     message.create(db, &channel, Some(&user)).await?;

crates/delta/src/routes/channels/message_unreact.rs

@@ -0,0 +1,58 @@
+use revolt_quark::{models::User, perms, Db, EmptyResponse, Permission, Ref, Result};
+use serde::{Deserialize, Serialize};
+
+/// # Query Parameters
+#[derive(Serialize, Deserialize, JsonSchema, FromForm)]
+pub struct OptionsUnreact {
+    /// Remove a specific user's reaction
+    user_id: Option<String>,
+    /// Remove all reactions
+    remove_all: Option<bool>,
+}
+
+/// # Remove Reaction(s) to Message
+///
+/// Remove your own, someone else's or all of a given reaction.
+///
+/// Requires `ManageMessages` if changing others' reactions.
+#[openapi(tag = "Interactions")]
+#[delete("/<target>/messages/<msg>/reactions/<emoji>?<options..>")]
+pub async fn unreact_message(
+    db: &Db,
+    user: User,
+    target: Ref,
+    msg: Ref,
+    emoji: Ref,
+    options: OptionsUnreact,
+) -> Result<EmptyResponse> {
+    let channel = target.as_channel(db).await?;
+    let mut permissions = perms(&user).channel(&channel);
+    permissions
+        .throw_permission_and_view_channel(db, Permission::React)
+        .await?;
+
+    // Check if we need to escalate permissions
+    let remove_all = options.remove_all.unwrap_or_default();
+    if options.user_id.is_some() || remove_all {
+        permissions
+            .throw_permission(db, Permission::ManageMessages)
+            .await?;
+    }
+
+    // Fetch relevant message
+    let message = msg.as_message_in(db, channel.id()).await?;
+
+    // Check if we should wipe all of this reaction
+    if remove_all {
+        return message
+            .clear_reaction(db, &emoji.id)
+            .await
+            .map(|_| EmptyResponse);
+    }
+
+    // Remove the reaction
+    message
+        .remove_reaction(db, options.user_id.as_ref().unwrap_or(&user.id), &emoji.id)
+        .await
+        .map(|_| EmptyResponse)
+}

crates/delta/src/routes/channels/mod.rs

@@ -11,13 +11,16 @@ mod group_remove_member;
 mod invite_create;
 mod members_fetch;
 mod message_bulk_delete;
+mod message_clear_reactions;
 mod message_delete;
 mod message_edit;
 mod message_fetch;
 mod message_query;
 mod message_query_stale;
+mod message_react;
 mod message_search;
 mod message_send;
+mod message_unreact;
 mod permissions_set;
 mod permissions_set_default;
 mod voice_join;
@@ -44,5 +47,8 @@ pub fn routes() -> (Vec<Route>, OpenApi) {
         voice_join::req,
         permissions_set::req,
         permissions_set_default::req,
+        message_react::react_message,
+        message_unreact::unreact_message,
+        message_clear_reactions::clear_reactions
     ]
 }

crates/delta/src/routes/customisation/emoji_create.rs

@@ -14,7 +14,11 @@ pub struct DataCreateEmoji {
     /// Server name
     #[validate(length(min = 1, max = 32), regex = "RE_EMOJI")]
     name: String,
+    /// Parent information
     parent: EmojiParent,
+    /// Whether the emoji is mature
+    #[serde(default)]
+    nsfw: bool,
 }
 
 /// # Create New Emoji
@@ -55,6 +59,7 @@ pub async fn create_emoji(
                 return Err(Error::TooManyEmoji);
             }
         }
+        EmojiParent::Detached => return Err(Error::InvalidOperation),
     };
 
     // Find the relevant attachment
@@ -67,6 +72,7 @@ pub async fn create_emoji(
         creator_id: user.id,
         name: data.name,
         animated: "image/gif" == &attachment.content_type,
+        nsfw: data.nsfw,
     };
 
     // Save emoji

crates/delta/src/routes/customisation/emoji_delete.rs

@@ -28,6 +28,7 @@ pub async fn delete_emoji(db: &Db, user: User, id: Ref) -> Result<EmptyResponse>
                     .throw_permission(db, Permission::ManageCustomisation)
                     .await?;
             }
+            EmojiParent::Detached => return Ok(EmptyResponse),
         };
     }
 

crates/delta/src/routes/mod.rs

@@ -80,6 +80,7 @@ fn custom_openapi_spec() -> OpenApi {
               "Channel Invites",
               "Channel Permissions",
               "Messaging",
+              "Interactions",
               "Groups",
               "Voice"
             ]

crates/delta/src/routes/servers/ban_create.rs

@@ -1,5 +1,5 @@
 use revolt_quark::{
-    models::{ServerBan, User},
+    models::{server_member::MemberCompositeKey, ServerBan, User},
     perms, Db, Error, Permission, Ref, Result,
 };
 
@@ -47,13 +47,27 @@ pub async fn req(
         .throw_permission(db, Permission::BanMembers)
         .await?;
 
-    let member = target.as_member(db, &server.id).await?;
+    // If member exists, check privileges against them
+    if let Ok(member) = target.as_member(db, &server.id).await {
+        if member.get_ranking(permissions.server.get().unwrap())
+            <= permissions.get_member_rank().unwrap_or(i64::MIN)
+        {
+            return Err(Error::NotElevated);
+        }
 
-    if member.get_ranking(permissions.server.get().unwrap())
-        <= permissions.get_member_rank().unwrap_or(i64::MIN)
-    {
-        return Err(Error::NotElevated);
+        server.ban_member(db, member, data.reason).await.map(Json)
+    } else {
+        let server_id = server.id.to_string();
+        server
+            .ban_user(
+                db,
+                MemberCompositeKey {
+                    server: server_id,
+                    user: target.id,
+                },
+                data.reason,
+            )
+            .await
+            .map(Json)
     }
-
-    server.ban_member(db, member, data.reason).await.map(Json)
 }

crates/delta/src/routes/servers/member_edit.rs

@@ -5,7 +5,7 @@ use revolt_quark::{
         server_member::{FieldsMember, PartialMember},
         File, Member, User,
     },
-    perms, Db, Error, Permission, Ref, Result,
+    perms, Db, Error, Permission, Ref, Result, Timestamp,
 };
 
 use rocket::serde::json::Json;
@@ -22,6 +22,8 @@ pub struct DataMemberEdit {
     avatar: Option<String>,
     /// Array of role ids
     roles: Option<Vec<String>>,
+    /// Timestamp this member is timed out until
+    timeout: Option<Timestamp>,
     /// Fields to remove from channel object
     #[validate(length(min = 1))]
     remove: Option<Vec<FieldsMember>>,
@@ -105,13 +107,7 @@ pub async fn req(
 
     // Check permissions against roles in diff
     if let Some(roles) = &data.roles {
-        let fallback = vec![];
-        let current_roles = member
-            .roles
-            .as_ref()
-            .unwrap_or(&fallback)
-            .iter()
-            .collect::<HashSet<&String>>();
+        let current_roles = member.roles.iter().collect::<HashSet<&String>>();
 
         let new_roles = roles.iter().collect::<HashSet<&String>>();
         let added_roles: Vec<&&String> = new_roles.difference(&current_roles).collect();
@@ -132,12 +128,14 @@ pub async fn req(
         nickname,
         avatar,
         roles,
+        timeout,
         remove,
     } = data;
 
     let mut partial = PartialMember {
         nickname,
         roles,
+        timeout,
         ..Default::default()
     };
 

crates/delta/src/routes/servers/roles_edit.rs

@@ -3,7 +3,9 @@ use revolt_quark::{
         server::{FieldsRole, PartialRole, Role},
         User,
     },
-    perms, Db, Error, Permission, Ref, Result,
+    perms,
+    util::regex::RE_COLOUR,
+    Db, Error, Permission, Ref, Result,
 };
 
 use rocket::serde::json::Json;
@@ -17,7 +19,7 @@ pub struct DataEditRole {
     #[validate(length(min = 1, max = 32))]
     name: Option<String>,
     /// Role colour
-    #[validate(length(min = 1, max = 32))]
+    #[validate(length(min = 1, max = 128), regex = "RE_COLOUR")]
     colour: Option<String>,
     /// Whether this role should be displayed separately
     hoist: Option<bool>,

crates/delta/src/routes/servers/server_edit.rs

@@ -33,6 +33,8 @@ pub struct DataEditServer {
 
     // Whether this server is age-restricted
     // nsfw: Option<bool>,
+    /// Whether this server is public and should show up on [Revolt Discover](https://rvlt.gg)
+    discoverable: Option<bool>,
     /// Whether analytics should be collected for this server
     ///
     /// Must be enabled in order to show up on [Revolt Discover](https://rvlt.gg).
@@ -102,6 +104,7 @@ pub async fn req(
         categories,
         system_messages,
         // nsfw,
+        discoverable,
         analytics,
         remove,
     } = data;
@@ -112,6 +115,7 @@ pub async fn req(
         categories,
         system_messages,
         // nsfw,
+        discoverable,
         analytics,
         ..Default::default()
     };

crates/delta/src/util/regex.rs

@@ -11,4 +11,4 @@ pub static RE_USERNAME: Lazy<Regex> =
 /// Regex for valid emoji names
 ///
 /// Alphanumeric and underscores
-pub static RE_EMOJI: Lazy<Regex> = Lazy::new(|| Regex::new(r"^[a-zA-Z0-9_]+$").unwrap());
+pub static RE_EMOJI: Lazy<Regex> = Lazy::new(|| Regex::new(r"^[a-z0-9_]+$").unwrap());

crates/quark/Cargo.toml

@@ -68,6 +68,7 @@ impl_ops = "0.1.1"
 num_enum = "0.5.6"
 reqwest = "0.11.10"
 bitfield = "0.13.2"
+once_cell = "1.13.0"
 lazy_static = "1.4.0"
 
 lru = { version = "0.7.6", optional = true }
@@ -84,7 +85,7 @@ rocket_empty = { optional = true, git = "https://github.com/insertish/rocket_emp
 rocket_cors = { optional = true, git = "https://github.com/lawliet89/rocket_cors", rev = "5843861a88958c16bfaa0b40f0d8910772bcd2f6" }
 
 # rAuth
-rauth = { git = "https://github.com/insertish/rauth", rev = "c2acaf6b31213e3969f8b48f9deed3daa125d394", features = [ "async-std-runtime" ] }
+rauth = { git = "https://github.com/insertish/rauth", rev = "9c3f9bb58a549a51546bd748274130ac4a667cb4", features = [ "async-std-runtime" ] }
 
 # Sentry
 sentry = "0.25.0"

crates/quark/src/events/client.rs

@@ -78,6 +78,29 @@ pub enum EventV1 {
     /// Delete message
     MessageDelete { id: String, channel: String },
 
+    /// New reaction to a message
+    MessageReact {
+        id: String,
+        channel_id: String,
+        user_id: String,
+        emoji_id: String,
+    },
+
+    /// Remove user's reaction from message
+    MessageUnreact {
+        id: String,
+        channel_id: String,
+        user_id: String,
+        emoji_id: String,
+    },
+
+    /// Remove a reaction from message
+    MessageRemoveReaction {
+        id: String,
+        channel_id: String,
+        emoji_id: String,
+    },
+
     /// Bulk delete messages
     BulkMessageDelete { channel: String, ids: Vec<String> },
 

crates/quark/src/events/impl.rs

@@ -111,6 +111,7 @@ impl State {
 
         // Fetch all memberships with their corresponding servers.
         let members: Vec<Member> = db.fetch_all_memberships(&user.id).await?;
+
         let server_ids: Vec<String> = members.iter().map(|x| x.id.server.clone()).collect();
         let servers = db.fetch_servers(&server_ids).await?;
 
@@ -484,10 +485,8 @@ impl State {
 
                 if data.rank.is_some() || data.permissions.is_some() {
                     if let Some(member) = self.cache.members.get(id) {
-                        if let Some(roles) = &member.roles {
-                            if roles.contains(role_id) {
-                                queue_server = Some(id.clone());
-                            }
+                        if member.roles.contains(role_id) {
+                            queue_server = Some(id.clone());
                         }
                     }
                 }
@@ -498,10 +497,8 @@ impl State {
                 }
 
                 if let Some(member) = self.cache.members.get(id) {
-                    if let Some(roles) = &member.roles {
-                        if roles.contains(role_id) {
-                            queue_server = Some(id.clone());
-                        }
+                    if member.roles.contains(role_id) {
+                        queue_server = Some(id.clone());
                     }
                 }
             }

crates/quark/src/impl/dummy/channels/message.rs

@@ -64,4 +64,22 @@ impl AbstractMessage for DummyDb {
     ) -> Result<Vec<Message>> {
         Ok(vec![self.fetch_message(channel).await.unwrap()])
     }
+
+    /// Add a new reaction to a message
+    async fn add_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
+        info!("Add to {id} with {emoji} and {user}");
+        Ok(())
+    }
+
+    /// Remove a reaction from a message
+    async fn remove_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
+        info!("Remove {emoji} from {id} for {user}");
+        Ok(())
+    }
+
+    /// Remove reaction from a message
+    async fn clear_reaction(&self, id: &str, emoji: &str) -> Result<()> {
+        info!("Clear {emoji} on {id}");
+        Ok(())
+    }
 }

crates/quark/src/impl/dummy/media/emoji.rs

@@ -14,6 +14,7 @@ impl AbstractEmoji for DummyDb {
             parent: EmojiParent::Server { id: id.into() },
             creator_id: id.into(),
             animated: false,
+            nsfw: false,
         })
     }
 
@@ -33,9 +34,9 @@ impl AbstractEmoji for DummyDb {
         Ok(())
     }
 
-    /// Delete an emoji by its id
-    async fn delete_emoji(&self, emoji: &Emoji) -> Result<()> {
-        info!("Delete {emoji:?}");
+    /// Detach an emoji by its id
+    async fn detach_emoji(&self, emoji: &Emoji) -> Result<()> {
+        info!("Detach {emoji:?}");
         Ok(())
     }
 }

crates/quark/src/impl/dummy/servers/server_member.rs

@@ -3,6 +3,8 @@ use crate::{AbstractServerMember, Result};
 
 use super::super::DummyDb;
 
+use iso8601_timestamp::Timestamp;
+
 #[async_trait]
 impl AbstractServerMember for DummyDb {
     async fn fetch_member(&self, server: &str, user: &str) -> Result<Member> {
@@ -11,9 +13,11 @@ impl AbstractServerMember for DummyDb {
                 server: server.into(),
                 user: user.into(),
             },
+            joined_at: Timestamp::now_utc(),
             nickname: None,
             avatar: None,
-            roles: None,
+            roles: vec![],
+            timeout: None,
         })
     }
 

crates/quark/src/impl/generic/channels/channel.rs

@@ -305,6 +305,15 @@ impl Channel {
                             vec![],
                         )
                         .await?;
+
+                        SystemMessage::ChannelOwnershipChanged {
+                            from: owner.to_string(),
+                            to: new_owner.into(),
+                        }
+                        .into_message(id.to_string())
+                        .create(db, self, None)
+                        .await
+                        .ok();
                     } else {
                         db.delete_channel(self).await?;
                         return Ok(());

crates/quark/src/impl/generic/channels/message.rs

@@ -8,9 +8,10 @@ use crate::{
     events::client::EventV1,
     models::{
         message::{
-            AppendMessage, BulkMessageResponse, PartialMessage, SendableEmbed, SystemMessage,
+            AppendMessage, BulkMessageResponse, Interactions, PartialMessage, SendableEmbed,
+            SystemMessage,
         },
-        Channel, Message, User,
+        Channel, Emoji, Message, User,
     },
     presence::presence_filter_online,
     tasks::ack::AckEvent,
@@ -191,6 +192,79 @@ impl Message {
             Err(Error::PayloadTooLarge)
         }
     }
+
+    /// Add a reaction to a message
+    pub async fn add_reaction(&self, db: &Database, user: &User, emoji: &str) -> Result<()> {
+        // Check if the emoji is whitelisted
+        if !self.interactions.can_use(emoji) {
+            return Err(Error::InvalidOperation);
+        }
+
+        // Check if the emoji is usable by us
+        if !Emoji::can_use(db, emoji).await? {
+            return Err(Error::InvalidOperation);
+        }
+
+        // Send reaction event
+        EventV1::MessageReact {
+            id: self.id.to_string(),
+            channel_id: self.channel.to_string(),
+            user_id: user.id.to_string(),
+            emoji_id: emoji.to_string(),
+        }
+        .p(self.channel.to_string())
+        .await;
+
+        // Add emoji
+        db.add_reaction(&self.id, emoji, &user.id).await
+    }
+
+    /// Remove a reaction from a message
+    pub async fn remove_reaction(&self, db: &Database, user: &str, emoji: &str) -> Result<()> {
+        // Check if it actually exists
+        let empty = if let Some(users) = self.reactions.get(emoji) {
+            if !users.contains(user) {
+                return Err(Error::NotFound);
+            }
+
+            users.len() == 1
+        } else {
+            return Err(Error::NotFound);
+        };
+
+        // Send reaction event
+        EventV1::MessageUnreact {
+            id: self.id.to_string(),
+            channel_id: self.channel.to_string(),
+            user_id: user.to_string(),
+            emoji_id: emoji.to_string(),
+        }
+        .p(self.channel.to_string())
+        .await;
+
+        if empty {
+            // If empty, remove the reaction entirely
+            db.clear_reaction(&self.id, emoji).await
+        } else {
+            // Otherwise only remove that one reaction
+            db.remove_reaction(&self.id, emoji, user).await
+        }
+    }
+
+    /// Remove a reaction from a message
+    pub async fn clear_reaction(&self, db: &Database, emoji: &str) -> Result<()> {
+        // Send reaction event
+        EventV1::MessageRemoveReaction {
+            id: self.id.to_string(),
+            channel_id: self.channel.to_string(),
+            emoji_id: emoji.to_string(),
+        }
+        .p(self.channel.to_string())
+        .await;
+
+        // Write to database
+        db.clear_reaction(&self.id, emoji).await
+    }
 }
 
 pub trait IntoUsers {
@@ -262,6 +336,9 @@ impl From<SystemMessage> for String {
                 "Channel description changed.".to_string()
             }
             SystemMessage::ChannelIconChanged { .. } => "Channel icon changed.".to_string(),
+            SystemMessage::ChannelOwnershipChanged { .. } => {
+                "Channel ownership changed.".to_string()
+            }
         }
     }
 }
@@ -321,3 +398,40 @@ impl BulkMessageResponse {
         }
     }
 }
+
+impl Interactions {
+    /// Validate interactions info is correct
+    pub async fn validate(&self, db: &Database) -> Result<()> {
+        if let Some(reactions) = &self.reactions {
+            if reactions.len() > 20 {
+                return Err(Error::InvalidOperation);
+            }
+
+            for reaction in reactions {
+                if !Emoji::can_use(db, reaction).await? {
+                    return Err(Error::InvalidOperation);
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Check if we can use a given emoji to react
+    pub fn can_use(&self, emoji: &str) -> bool {
+        if self.restrict_reactions {
+            if let Some(reactions) = &self.reactions {
+                reactions.contains(emoji)
+            } else {
+                false
+            }
+        } else {
+            true
+        }
+    }
+
+    /// Check if default initialisation of fields
+    pub fn is_default(&self) -> bool {
+        !self.restrict_reactions && self.reactions.is_none()
+    }
+}

crates/quark/src/impl/generic/media/emoji.rs

@@ -1,14 +1,27 @@
+use std::{collections::HashSet, str::FromStr};
+
+use ulid::Ulid;
+
 use crate::{
     events::client::EventV1,
     models::{emoji::EmojiParent, Emoji},
     Database, Result,
 };
 
+lazy_static! {
+    /// Permissible emojis
+    static ref PERMISSIBLE_EMOJIS: HashSet<String> = include_str!(crate::asset!("emojis.txt"))
+        .split('\n')
+        .map(|x| x.into())
+        .collect();
+}
+
 impl Emoji {
     /// Get parent id
     fn parent(&self) -> &str {
         match &self.parent {
             EmojiParent::Server { id } => id,
+            EmojiParent::Detached => "",
         }
     }
 
@@ -30,7 +43,16 @@ impl Emoji {
         .p(self.parent().to_string())
         .await;
 
-        db.mark_attachment_as_deleted(&self.id).await?;
-        db.delete_emoji(&self).await
+        db.detach_emoji(&self).await
+    }
+
+    /// Check whether we can use a given emoji
+    pub async fn can_use(db: &Database, emoji: &str) -> Result<bool> {
+        if Ulid::from_str(emoji).is_ok() {
+            db.fetch_emoji(emoji).await?;
+            Ok(true)
+        } else {
+            Ok(PERMISSIBLE_EMOJIS.contains(emoji))
+        }
     }
 }

crates/quark/src/impl/generic/servers/server.rs

@@ -1,3 +1,4 @@
+use iso8601_timestamp::Timestamp;
 use ulid::Ulid;
 
 use crate::{
@@ -188,7 +189,11 @@ impl Server {
                 server: self.id.clone(),
                 user: user.id.clone(),
             },
-            ..Default::default()
+            joined_at: Timestamp::now_utc(),
+            nickname: None,
+            avatar: None,
+            roles: vec![],
+            timeout: None,
         };
 
         db.insert_member(&member).await?;
@@ -278,6 +283,18 @@ impl Server {
         Ok(())
     }
 
+    /// Create ban
+    pub async fn ban_user(
+        self,
+        db: &Database,
+        id: MemberCompositeKey,
+        reason: Option<String>,
+    ) -> Result<ServerBan> {
+        let ban = ServerBan { id, reason };
+        db.insert_ban(&ban).await?;
+        Ok(ban)
+    }
+
     /// Ban a member from a server
     pub async fn ban_member(
         self,
@@ -285,16 +302,10 @@ impl Server {
         member: Member,
         reason: Option<String>,
     ) -> Result<ServerBan> {
-        let ban = ServerBan {
-            id: member.id.clone(),
-            reason,
-        };
-
-        self.remove_member(db, member, RemovalIntention::Ban)
+        self.remove_member(db, member.clone(), RemovalIntention::Ban)
             .await?;
 
-        db.insert_ban(&ban).await?;
-        Ok(ban)
+        self.ban_user(db, member.id, reason).await
     }
 }
 

crates/quark/src/impl/generic/servers/server_member.rs

@@ -1,3 +1,5 @@
+use iso8601_timestamp::Timestamp;
+
 use crate::{
     events::client::EventV1,
     models::{
@@ -36,19 +38,24 @@ impl Member {
 
     /// Get this user's current ranking
     pub fn get_ranking(&self, server: &Server) -> i64 {
-        if let Some(roles) = &self.roles {
-            let mut value = i64::MAX;
-            for role in roles {
-                if let Some(role) = server.roles.get(role) {
-                    if role.rank < value {
-                        value = role.rank;
-                    }
+        let mut value = i64::MAX;
+        for role in &self.roles {
+            if let Some(role) = server.roles.get(role) {
+                if role.rank < value {
+                    value = role.rank;
                 }
             }
+        }
 
-            value
+        value
+    }
+
+    /// Check whether this member is in timeout
+    pub fn in_timeout(&self) -> bool {
+        if let Some(timeout) = self.timeout {
+            *timeout > *Timestamp::now_utc()
         } else {
-            i64::MAX
+            false
         }
     }
 
@@ -56,7 +63,8 @@ impl Member {
         match field {
             FieldsMember::Avatar => self.avatar = None,
             FieldsMember::Nickname => self.nickname = None,
-            FieldsMember::Roles => self.roles = None,
+            FieldsMember::Roles => self.roles.clear(),
+            FieldsMember::Timeout => self.timeout = None,
         }
     }
 }

crates/quark/src/impl/mongo/admin/migrations/scripts.rs

@@ -1,6 +1,6 @@
 use std::time::Duration;
 
-use bson::Bson;
+use bson::{Bson, DateTime};
 use futures::StreamExt;
 use mongodb::{
     bson::{doc, from_bson, from_document, to_document, Document},
@@ -16,7 +16,7 @@ struct MigrationInfo {
     revision: i32,
 }
 
-pub const LATEST_REVISION: i32 = 17;
+pub const LATEST_REVISION: i32 = 18;
 
 pub async fn migrate_database(db: &MongoDb) {
     let migrations = db.col::<Document>("migrations");
@@ -644,6 +644,23 @@ pub async fn run_migrations(db: &MongoDb, revision: i32) -> i32 {
             .expect("Failed to create emoji parent index.");
     }
 
+    if revision <= 17 {
+        info!("Running migration [revision 17 / 15-07-2022]: Initialise `joined_at` property on server members.");
+
+        db.col::<Document>("server_members")
+            .update_many(
+                doc! {},
+                doc! {
+                    "$set": {
+                        "joined_at": DateTime::now().to_rfc3339_string()
+                    }
+                },
+                None,
+            )
+            .await
+            .expect("Failed to update server members.");
+    }
+
     // Need to migrate fields on attachments, change `user_id`, `object_id`, etc to `parent`.
 
     // Reminder to update LATEST_REVISION when adding new migrations.

crates/quark/src/impl/mongo/channels/message.rs

@@ -279,4 +279,70 @@ impl AbstractMessage for MongoDb {
         )
         .await
     }
+
+    /// Add a new reaction to a message
+    async fn add_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$addToSet": {
+                        format!("reactions.{emoji}"): user
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "message",
+            })
+    }
+
+    /// Remove a reaction from a message
+    async fn remove_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$pull": {
+                        format!("reactions.{emoji}"): user
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "message",
+            })
+    }
+
+    /// Remove reaction from a message
+    async fn clear_reaction(&self, id: &str, emoji: &str) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": id
+                },
+                doc! {
+                    "$unset": {
+                        format!("reactions.{emoji}"): 1
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "message",
+            })
+    }
 }

crates/quark/src/impl/mongo/media/emoji.rs

@@ -1,5 +1,7 @@
+use bson::Document;
+
 use crate::models::Emoji;
-use crate::{AbstractEmoji, Result};
+use crate::{AbstractEmoji, Error, Result};
 
 use super::super::MongoDb;
 
@@ -42,7 +44,26 @@ impl AbstractEmoji for MongoDb {
     }
 
     /// Delete an emoji by its id
-    async fn delete_emoji(&self, emoji: &Emoji) -> Result<()> {
-        self.delete_one_by_id(COL, &emoji.id).await.map(|_| ())
+    async fn detach_emoji(&self, emoji: &Emoji) -> Result<()> {
+        self.col::<Document>(COL)
+            .update_one(
+                doc! {
+                    "_id": &emoji.id
+                },
+                doc! {
+                    "$set": {
+                        "parent": {
+                            "type": "Detached"
+                        }
+                    }
+                },
+                None,
+            )
+            .await
+            .map(|_| ())
+            .map_err(|_| Error::DatabaseError {
+                operation: "update_one",
+                with: "emojis",
+            })
     }
 }

crates/quark/src/impl/mongo/servers/server_member.rs

@@ -129,6 +129,7 @@ impl IntoDocumentPath for FieldsMember {
             FieldsMember::Avatar => "avatar",
             FieldsMember::Nickname => "nickname",
             FieldsMember::Roles => "roles",
+            FieldsMember::Timeout => "timeout",
         })
     }
 }

crates/quark/src/models/channels/message.rs

@@ -1,3 +1,6 @@
+use crate::util::regex::RE_COLOUR;
+use std::collections::{HashMap, HashSet};
+
 use serde::{Deserialize, Serialize};
 use validator::Validate;
 
@@ -11,6 +14,11 @@ use crate::{
     types::january::Embed,
 };
 
+/// Utility function to check if a boolean value is false
+pub fn if_false(t: &bool) -> bool {
+    !t
+}
+
 /// # Reply
 ///
 /// Representation of a message reply before it is sent.
@@ -33,7 +41,7 @@ pub struct SendableEmbed {
     #[validate(length(min = 1, max = 2000))]
     pub description: Option<String>,
     pub media: Option<String>,
-    #[validate(length(min = 1, max = 64))]
+    #[validate(length(min = 1, max = 128), regex = "RE_COLOUR")]
     pub colour: Option<String>,
 }
 
@@ -61,6 +69,8 @@ pub enum SystemMessage {
     ChannelDescriptionChanged { by: String },
     #[serde(rename = "channel_icon_changed")]
     ChannelIconChanged { by: String },
+    #[serde(rename = "channel_ownership_changed")]
+    ChannelOwnershipChanged { from: String, to: String },
 }
 
 /// Name and / or avatar override information
@@ -74,6 +84,25 @@ pub struct Masquerade {
     #[serde(skip_serializing_if = "Option::is_none")]
     #[validate(length(min = 1, max = 128))]
     pub avatar: Option<String>,
+    /// Replace the display role colour shown on this message
+    ///
+    /// Must have `ManageRole` permission to use
+    ///
+    /// This can be any valid CSS colour
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[validate(length(min = 1, max = 32))]
+    pub colour: Option<String>,
+}
+
+/// Information to guide interactions on this message
+#[derive(Serialize, Deserialize, JsonSchema, Debug, Clone, Validate, Default)]
+pub struct Interactions {
+    /// Reactions which should always appear and be distinct
+    #[serde(skip_serializing_if = "Option::is_none", default)]
+    pub reactions: Option<HashSet<String>>,
+    /// Whether reactions should be restricted to the given list
+    #[serde(skip_serializing_if = "if_false", default)]
+    pub restrict_reactions: bool,
 }
 
 /// Representation of a Message on Revolt
@@ -115,6 +144,12 @@ pub struct Message {
     /// Array of message ids this message is replying to
     #[serde(skip_serializing_if = "Option::is_none")]
     pub replies: Option<Vec<String>>,
+    /// Hashmap of emoji IDs to array of user IDs
+    #[serde(skip_serializing_if = "HashMap::is_empty", default)]
+    pub reactions: HashMap<String, HashSet<String>>,
+    /// Information about how this message should be interacted with
+    #[serde(skip_serializing_if = "Interactions::is_default", default)]
+    pub interactions: Interactions,
     /// Name and / or avatar overrides for this message
     #[serde(skip_serializing_if = "Option::is_none")]
     pub masquerade: Option<Masquerade>,

crates/quark/src/models/media/emoji.rs

@@ -1,10 +1,16 @@
 use serde::{Deserialize, Serialize};
 
+/// Utility function to check if a boolean value is false
+pub fn if_false(t: &bool) -> bool {
+    !t
+}
+
 /// Information about what owns this emoji
 #[derive(Serialize, Deserialize, JsonSchema, Debug, Clone)]
 #[serde(tag = "type")]
 pub enum EmojiParent {
     Server { id: String },
+    Detached,
 }
 
 /// Representation of an Emoji on Revolt
@@ -20,5 +26,9 @@ pub struct Emoji {
     /// Emoji name
     pub name: String,
     /// Whether the emoji is animated
+    #[serde(skip_serializing_if = "if_false", default)]
     pub animated: bool,
+    /// Whether the emoji is marked as nsfw
+    #[serde(skip_serializing_if = "if_false", default)]
+    pub nsfw: bool,
 }

crates/quark/src/models/servers/server_member.rs

@@ -1,3 +1,4 @@
+use iso8601_timestamp::Timestamp;
 use serde::{Deserialize, Serialize};
 
 use crate::models::attachment::File;
@@ -12,7 +13,7 @@ pub struct MemberCompositeKey {
 }
 
 /// Representation of a member of a server on Revolt
-#[derive(Serialize, Deserialize, JsonSchema, Debug, Clone, OptionalStruct, Default)]
+#[derive(Serialize, Deserialize, JsonSchema, Debug, Clone, OptionalStruct)]
 #[optional_derive(Serialize, Deserialize, JsonSchema, Debug, Default, Clone)]
 #[optional_name = "PartialMember"]
 #[opt_skip_serializing_none]
@@ -22,6 +23,9 @@ pub struct Member {
     #[serde(rename = "_id")]
     pub id: MemberCompositeKey,
 
+    /// Time at which this user joined the server
+    pub joined_at: Timestamp,
+
     /// Member's nickname
     #[serde(skip_serializing_if = "Option::is_none")]
     pub nickname: Option<String>,
@@ -30,8 +34,11 @@ pub struct Member {
     pub avatar: Option<File>,
 
     /// Member's roles
+    #[serde(skip_serializing_if = "Vec::is_empty", default)]
+    pub roles: Vec<String>,
+    /// Timestamp this member is timed out until
     #[serde(skip_serializing_if = "Option::is_none")]
-    pub roles: Option<Vec<String>>,
+    pub timeout: Option<Timestamp>,
 }
 
 /// Optional fields on server member object
@@ -40,6 +47,7 @@ pub enum FieldsMember {
     Nickname,
     Avatar,
     Roles,
+    Timeout,
 }
 
 /// Member removal intention

crates/quark/src/permissions/defn/mod.rs

@@ -45,8 +45,23 @@ impl Override {
 impl PermissionValue {
     /// Apply a given override to this value
     pub fn apply(&mut self, v: Override) {
-        self.0 |= v.allow;
-        self.0 &= !v.deny;
+        self.allow(v.allow);
+        self.revoke(v.deny);
+    }
+
+    /// Allow given permissions
+    pub fn allow(&mut self, v: u64) {
+        self.0 |= v;
+    }
+
+    /// Revoke given permissions
+    pub fn revoke(&mut self, v: u64) {
+        self.0 &= !v;
+    }
+
+    /// Restrict to given permissions
+    pub fn restrict(&mut self, v: u64) {
+        self.0 &= v;
     }
 }
 

crates/quark/src/permissions/defn/permission.rs

@@ -65,8 +65,8 @@ pub enum Permission {
     UploadFiles = 1 << 27,
     /// Masquerade messages using custom nickname and avatar
     Masquerade = 1 << 28,
-
-    // % 1 bits reserved
+    /// React to messages with emojis
+    React = 1 << 29,
 
     // * Voice permissions
     /// Connect to a voice channel
@@ -98,6 +98,7 @@ impl_op_ex!(+ |a: &Permission, b: &Permission| -> u64 { *a as u64 | *b as u64 })
 impl_op_ex_commutative!(+ |a: &u64, b: &Permission| -> u64 { *a | *b as u64 });
 
 lazy_static! {
+    pub static ref ALLOW_IN_TIMEOUT: u64 = Permission::ViewChannel + Permission::ReadMessageHistory;
     pub static ref DEFAULT_PERMISSION_VIEW_ONLY: u64 =
         Permission::ViewChannel + Permission::ReadMessageHistory;
     pub static ref DEFAULT_PERMISSION: u64 = *DEFAULT_PERMISSION_VIEW_ONLY

crates/quark/src/permissions/impl/permission.rs

@@ -2,7 +2,7 @@ use std::collections::HashSet;
 
 use crate::{
     models::Channel, permissions::PermissionCalculator, Override, Permission, PermissionValue,
-    Permissions, Perms, Result, DEFAULT_PERMISSION_DIRECT_MESSAGE,
+    Permissions, Perms, Result, ALLOW_IN_TIMEOUT, DEFAULT_PERMISSION_DIRECT_MESSAGE,
     DEFAULT_PERMISSION_SAVED_MESSAGES, DEFAULT_PERMISSION_VIEW_ONLY,
 };
 
@@ -55,11 +55,7 @@ async fn calculate_server_permission(
     let mut permissions: PermissionValue = server.default_permissions.into();
 
     // 4. Resolve each role in order.
-    let member_roles: HashSet<&String> = if let Some(roles) = member.roles.as_ref() {
-        roles.iter().collect()
-    } else {
-        HashSet::new()
-    };
+    let member_roles: HashSet<&String> = member.roles.iter().collect();
 
     if !member_roles.is_empty() {
         let mut roles = server
@@ -80,6 +76,11 @@ async fn calculate_server_permission(
         }
     }
 
+    // 5. Revoke permissions if member is timed out.
+    if member.in_timeout() {
+        permissions.restrict(*ALLOW_IN_TIMEOUT);
+    }
+
     Ok(permissions)
 }
 
@@ -110,25 +111,36 @@ async fn calculate_channel_permission(
 
     // 1. Check channel type.
     let value: PermissionValue = match channel {
-        Channel::SavedMessages { .. } => (*DEFAULT_PERMISSION_SAVED_MESSAGES).into(),
-        Channel::DirectMessage { recipients, .. } => {
-            // 2. Fetch user.
-            let other_user = recipients
-                .iter()
-                .find(|x| x != &&data.perspective.id)
-                .unwrap();
-
-            let user = db.fetch_user(other_user).await?;
-            data.user.set(user);
-
-            // 3. Calculate user permissions.
-            let perms = data.calc_user(db).await;
-
-            // 4. Check if the user can send messages.
-            if perms.get_send_message() {
-                (*DEFAULT_PERMISSION_DIRECT_MESSAGE).into()
+        Channel::SavedMessages { user, .. } => {
+            if user == &data.perspective.id {
+                (*DEFAULT_PERMISSION_SAVED_MESSAGES).into()
             } else {
-                (*DEFAULT_PERMISSION_VIEW_ONLY).into()
+                0_u64.into()
+            }
+        }
+        Channel::DirectMessage { recipients, .. } => {
+            // 2. Ensure we are a recipient.
+            if recipients.contains(&data.perspective.id) {
+                // 3. Fetch user.
+                let other_user = recipients
+                    .iter()
+                    .find(|x| x != &&data.perspective.id)
+                    .unwrap();
+
+                let user = db.fetch_user(other_user).await?;
+                data.user.set(user);
+
+                // 4. Calculate user permissions.
+                let perms = data.calc_user(db).await;
+
+                // 5. Check if the user can send messages.
+                if perms.get_send_message() {
+                    (*DEFAULT_PERMISSION_DIRECT_MESSAGE).into()
+                } else {
+                    (*DEFAULT_PERMISSION_VIEW_ONLY).into()
+                }
+            } else {
+                0_u64.into()
             }
         }
         Channel::Group {
@@ -182,11 +194,7 @@ async fn calculate_channel_permission(
                 }
 
                 // 4. Resolve each role in order.
-                let member_roles: HashSet<&String> = if let Some(roles) = member.roles.as_ref() {
-                    roles.iter().collect()
-                } else {
-                    HashSet::new()
-                };
+                let member_roles: HashSet<&String> = member.roles.iter().collect();
 
                 if !member_roles.is_empty() {
                     let mut roles = role_permissions
@@ -208,6 +216,11 @@ async fn calculate_channel_permission(
                     }
                 }
 
+                // 5. Revoke permissions if member is timed out.
+                if member.in_timeout() {
+                    permissions.restrict(*ALLOW_IN_TIMEOUT);
+                }
+
                 permissions
             } else {
                 (Permission::GrantAllSafe as u64).into()

crates/quark/src/traits/channels/message.rs

@@ -42,4 +42,13 @@ pub trait AbstractMessage: Sync + Send {
         after: Option<String>,
         sort: MessageSort,
     ) -> Result<Vec<Message>>;
+
+    /// Add a new reaction to a message
+    async fn add_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()>;
+
+    /// Remove a reaction from a message
+    async fn remove_reaction(&self, id: &str, emoji: &str, user: &str) -> Result<()>;
+
+    /// Remove reaction from a message
+    async fn clear_reaction(&self, id: &str, emoji: &str) -> Result<()>;
 }

crates/quark/src/traits/media/emoji.rs

@@ -15,6 +15,6 @@ pub trait AbstractEmoji: Sync + Send {
     /// Insert emoji into database.
     async fn insert_emoji(&self, emoji: &Emoji) -> Result<()>;
 
-    /// Delete an emoji by its id
-    async fn delete_emoji(&self, emoji: &Emoji) -> Result<()>;
+    /// Detach an emoji by its id
+    async fn detach_emoji(&self, emoji: &Emoji) -> Result<()>;
 }

crates/quark/src/util/mod.rs

@@ -3,6 +3,7 @@ pub mod manipulation;
 pub mod pfp;
 pub mod rauth;
 pub mod r#ref;
+pub mod regex;
 pub mod result;
 pub mod value;
 pub mod variables;

crates/quark/src/util/ref.rs

@@ -6,7 +6,7 @@ use serde::{Deserialize, Serialize};
 
 use crate::models::{Bot, Channel, Emoji, Invite, Member, Message, Server, ServerBan, User};
 use crate::presence::presence_is_online;
-use crate::{Database, Result};
+use crate::{Database, Error, Result};
 
 /// Reference to some object in the database
 #[derive(Serialize, Deserialize)]
@@ -44,6 +44,16 @@ impl Ref {
         db.fetch_message(&self.id).await
     }
 
+    /// Fetch message in channel from Ref
+    pub async fn as_message_in(&self, db: &Database, channel: &str) -> Result<Message> {
+        let message = self.as_message(db).await?;
+        if message.channel != channel {
+            return Err(Error::NotFound);
+        }
+
+        Ok(message)
+    }
+
     /// Fetch bot from Ref
     pub async fn as_bot(&self, db: &Database) -> Result<Bot> {
         db.fetch_bot(&self.id).await

crates/quark/src/util/regex.rs

@@ -0,0 +1,21 @@
+use once_cell::sync::Lazy;
+use regex::Regex;
+
+/// Regex for valid role colours
+///
+/// Allows the use of named colours, rgb(a), variables and all gradients.
+///
+/// Flags:
+/// - Case-insensitive (`i`)
+///
+/// Source:
+/// ```regex
+/// VALUE = [a-z ]+|var\(--[a-z\d-]+\)|rgba?\([\d, ]+\)|#[a-f0-9]+
+/// ADDITIONAL_VALUE = \d+deg
+/// STOP = ([ ]+(\d{1,3}%|0))?
+///
+/// ^(?:VALUE|(repeating-)?(linear|conic|radial)-gradient\((VALUE|ADDITIONAL_VALUE)STOP(,[ ]*(VALUE)STOP)+\))$
+/// ```
+pub static RE_COLOUR: Lazy<Regex> = Lazy::new(|| {
+    Regex::new(r"(?i)^(?:[a-z ]+|var\(--[a-z\d-]+\)|rgba?\([\d, ]+\)|#[a-f0-9]+|(repeating-)?(linear|conic|radial)-gradient\(([a-z ]+|var\(--[a-z\d-]+\)|rgba?\([\d, ]+\)|#[a-f0-9]+|\d+deg)([ ]+(\d{1,3}%|0))?(,[ ]*([a-z ]+|var\(--[a-z\d-]+\)|rgba?\([\d, ]+\)|#[a-f0-9]+)([ ]+(\d{1,3}%|0))?)+\))$").unwrap()
+});

crates/quark/src/util/result.rs

@@ -72,6 +72,7 @@ pub enum Error {
     },
     NotElevated,
     CannotGiveMissingPermissions,
+    NotOwner,
 
     // ? General errors.
     DatabaseError {
@@ -167,6 +168,7 @@ impl<'r> Responder<'r, 'static> for Error {
             Error::MissingUserPermission { .. } => Status::Forbidden,
             Error::NotElevated => Status::Forbidden,
             Error::CannotGiveMissingPermissions => Status::Forbidden,
+            Error::NotOwner => Status::Forbidden,
 
             Error::DatabaseError { .. } => Status::InternalServerError,
             Error::InternalError => Status::InternalServerError,

docker-compose.yml

@@ -50,6 +50,7 @@ services:
       /usr/bin/mc mb minio/backgrounds;
       /usr/bin/mc mb minio/icons;
       /usr/bin/mc mb minio/banners;
+      /usr/bin/mc mb minio/emojis;
       exit 0;
       "
   # File server (autumn)