ui stuff

src/chat.rs

@@ -0,0 +1,88 @@
+use crate::AppState;
+use axum::extract::ws::{Message, WebSocket};
+use futures_util::{SinkExt, StreamExt};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use tokio::sync::{RwLock, mpsc};
+use uuid::Uuid;
+
+#[derive(Default)]
+pub struct ChatHub {
+    // user_id -> sender
+    clients: RwLock<HashMap<Uuid, mpsc::UnboundedSender<ServerEvent>>>,
+}
+
+#[derive(Serialize, Clone)]
+#[serde(tag = "type", rename_all = "snake_case")]
+pub enum ServerEvent {
+    MessageCreated {
+        channel_id: Uuid,
+        message: serde_json::Value,
+    },
+    DmCreated {
+        other_user_id: Uuid,
+        message: serde_json::Value,
+    },
+}
+
+#[derive(Deserialize)]
+#[serde(tag = "type", rename_all = "snake_case")]
+enum ClientEvent {
+    // Currently no interactive client events for the general chat WS
+    Ping,
+}
+
+impl ChatHub {
+    pub async fn add_client(&self, user_id: Uuid, tx: mpsc::UnboundedSender<ServerEvent>) {
+        let mut clients = self.clients.write().await;
+        clients.insert(user_id, tx);
+    }
+
+    pub async fn remove_client(&self, user_id: Uuid) {
+        let mut clients = self.clients.write().await;
+        clients.remove(&user_id);
+    }
+
+    pub async fn broadcast_to_user(&self, user_id: Uuid, event: ServerEvent) {
+        let clients = self.clients.read().await;
+        if let Some(tx) = clients.get(&user_id) {
+            let _ = tx.send(event);
+        }
+    }
+
+    pub async fn broadcast_to_many(&self, user_ids: Vec<Uuid>, event: ServerEvent) {
+        let clients = self.clients.read().await;
+        for user_id in user_ids {
+            if let Some(tx) = clients.get(&user_id) {
+                let _ = tx.send(event.clone());
+            }
+        }
+    }
+}
+
+pub async fn handle_socket(state: AppState, socket: WebSocket, user_id: Uuid) {
+    let (mut ws_sender, mut ws_receiver) = socket.split();
+    let (tx, mut rx) = mpsc::unbounded_channel::<ServerEvent>();
+
+    state.chat.add_client(user_id, tx).await;
+
+    let send_task = tokio::spawn(async move {
+        while let Some(event) = rx.recv().await {
+            let Ok(payload) = serde_json::to_string(&event) else {
+                continue;
+            };
+            if ws_sender.send(Message::Text(payload.into())).await.is_err() {
+                break;
+            }
+        }
+    });
+
+    while let Some(Ok(msg)) = ws_receiver.next().await {
+        if let Message::Close(_) = msg {
+            break;
+        }
+    }
+
+    send_task.abort();
+    state.chat.remove_client(user_id).await;
+}

src/db.rs

@@ -1,15 +1,18 @@
 use anyhow::{Result, anyhow};
 use chrono::{Duration, Utc};
 use sea_orm::{
-    ActiveModelTrait, ActiveValue::Set, ColumnTrait, DatabaseConnection,
-    Condition, DatabaseTransaction, EntityTrait, PaginatorTrait, QueryFilter, QueryOrder, QuerySelect,
+    ActiveModelTrait, ActiveValue::Set, ColumnTrait, Condition, DatabaseConnection,
+    DatabaseTransaction, EntityTrait, PaginatorTrait, QueryFilter, QueryOrder, QuerySelect,
     TransactionTrait, sea_query::OnConflict,
 };
 use uuid::Uuid;
 
 use crate::{
     entity::{channels, direct_messages, guild_members, guilds, invites, messages, users},
-    models::{BasicUser, Channel, DmConversation, DmMessageWithAuthor, Guild, Invite, MessageWithAuthor, User},
+    models::{
+        BasicUser, Channel, DmConversation, DmMessageWithAuthor, Guild, Invite, MessageWithAuthor,
+        User,
+    },
 };
 
 pub const CHANNEL_KIND_TEXT: &str = "text";
@@ -42,7 +45,10 @@ pub async fn upsert_user_from_oidc(
                 users::Column::DisplayName,
                 users::Column::AvatarUrl,
             ])
-            .value(users::Column::UpdatedAt, sea_orm::sea_query::Expr::current_timestamp())
+            .value(
+                users::Column::UpdatedAt,
+                sea_orm::sea_query::Expr::current_timestamp(),
+            )
             .to_owned(),
     )
     .exec_with_returning(db)
@@ -75,6 +81,15 @@ pub async fn list_guild_members(db: &DatabaseConnection, guild_id: Uuid) -> Resu
         .collect())
 }
 
+pub async fn list_guild_member_ids(db: &DatabaseConnection, guild_id: Uuid) -> Result<Vec<Uuid>> {
+    let rows = guild_members::Entity::find()
+        .filter(guild_members::Column::GuildId.eq(guild_id))
+        .all(db)
+        .await?;
+
+    Ok(rows.into_iter().map(|m| m.user_id).collect())
+}
+
 pub async fn list_guilds_for_user(db: &DatabaseConnection, user_id: Uuid) -> Result<Vec<Guild>> {
     let rows = guild_members::Entity::find()
         .filter(guild_members::Column::UserId.eq(user_id))
@@ -88,7 +103,11 @@ pub async fn list_guilds_for_user(db: &DatabaseConnection, user_id: Uuid) -> Res
         .collect())
 }
 
-pub async fn create_guild(db: &DatabaseConnection, owner_user_id: Uuid, name: &str) -> Result<Guild> {
+pub async fn create_guild(
+    db: &DatabaseConnection,
+    owner_user_id: Uuid,
+    name: &str,
+) -> Result<Guild> {
     let guild = guilds::Entity::insert(guilds::ActiveModel {
         id: Set(Uuid::new_v4()),
         name: Set(name.to_string()),
@@ -104,9 +123,12 @@ pub async fn create_guild(db: &DatabaseConnection, owner_user_id: Uuid, name: &s
         ..Default::default()
     })
     .on_conflict(
-        OnConflict::columns([guild_members::Column::GuildId, guild_members::Column::UserId])
-            .do_nothing()
-            .to_owned(),
+        OnConflict::columns([
+            guild_members::Column::GuildId,
+            guild_members::Column::UserId,
+        ])
+        .do_nothing()
+        .to_owned(),
     )
     .exec(db)
     .await?;
@@ -176,9 +198,12 @@ pub async fn join_invite(db: &DatabaseConnection, code: &str, user_id: Uuid) ->
         ..Default::default()
     })
     .on_conflict(
-        OnConflict::columns([guild_members::Column::GuildId, guild_members::Column::UserId])
-            .do_nothing()
-            .to_owned(),
+        OnConflict::columns([
+            guild_members::Column::GuildId,
+            guild_members::Column::UserId,
+        ])
+        .do_nothing()
+        .to_owned(),
     )
     .exec(&txn)
     .await?;
@@ -215,12 +240,18 @@ pub async fn create_channel(
     Ok(map_channel(channel))
 }
 
-pub async fn get_channel_by_id(db: &DatabaseConnection, channel_id: Uuid) -> Result<Option<Channel>> {
+pub async fn get_channel_by_id(
+    db: &DatabaseConnection,
+    channel_id: Uuid,
+) -> Result<Option<Channel>> {
     let row = channels::Entity::find_by_id(channel_id).one(db).await?;
     Ok(row.map(map_channel))
 }
 
-pub async fn list_channels_for_guild(db: &DatabaseConnection, guild_id: Uuid) -> Result<Vec<Channel>> {
+pub async fn list_channels_for_guild(
+    db: &DatabaseConnection,
+    guild_id: Uuid,
+) -> Result<Vec<Channel>> {
     let channels = channels::Entity::find()
         .filter(channels::Column::GuildId.eq(guild_id))
         .order_by_asc(channels::Column::CreatedAt)
@@ -230,7 +261,10 @@ pub async fn list_channels_for_guild(db: &DatabaseConnection, guild_id: Uuid) ->
     Ok(channels.into_iter().map(map_channel).collect())
 }
 
-pub async fn list_voice_channels_for_guild(db: &DatabaseConnection, guild_id: Uuid) -> Result<Vec<Channel>> {
+pub async fn list_voice_channels_for_guild(
+    db: &DatabaseConnection,
+    guild_id: Uuid,
+) -> Result<Vec<Channel>> {
     let channels = channels::Entity::find()
         .filter(channels::Column::GuildId.eq(guild_id))
         .filter(channels::Column::Kind.eq(CHANNEL_KIND_VOICE))
@@ -241,7 +275,11 @@ pub async fn list_voice_channels_for_guild(db: &DatabaseConnection, guild_id: Uu
     Ok(channels.into_iter().map(map_channel).collect())
 }
 
-pub async fn is_member_of_guild(db: &DatabaseConnection, guild_id: Uuid, user_id: Uuid) -> Result<bool> {
+pub async fn is_member_of_guild(
+    db: &DatabaseConnection,
+    guild_id: Uuid,
+    user_id: Uuid,
+) -> Result<bool> {
     let count = guild_members::Entity::find()
         .filter(guild_members::Column::GuildId.eq(guild_id))
         .filter(guild_members::Column::UserId.eq(user_id))
@@ -251,7 +289,10 @@ pub async fn is_member_of_guild(db: &DatabaseConnection, guild_id: Uuid, user_id
     Ok(count > 0)
 }
 
-pub async fn guild_id_for_channel(db: &DatabaseConnection, channel_id: Uuid) -> Result<Option<Uuid>> {
+pub async fn guild_id_for_channel(
+    db: &DatabaseConnection,
+    channel_id: Uuid,
+) -> Result<Option<Uuid>> {
     let guild_id = channels::Entity::find_by_id(channel_id)
         .select_only()
         .column(channels::Column::GuildId)
@@ -267,18 +308,30 @@ pub async fn create_message(
     channel_id: Uuid,
     author_user_id: Uuid,
     body: &str,
-) -> Result<()> {
-    messages::Entity::insert(messages::ActiveModel {
+) -> Result<MessageWithAuthor> {
+    let model = messages::Entity::insert(messages::ActiveModel {
         id: Set(Uuid::new_v4()),
         channel_id: Set(channel_id),
         author_user_id: Set(author_user_id),
         body: Set(body.to_string()),
         ..Default::default()
     })
-    .exec(db)
+    .exec_with_returning(db)
     .await?;
 
-    Ok(())
+    let user = users::Entity::find_by_id(author_user_id)
+        .one(db)
+        .await?
+        .ok_or_else(|| anyhow!("author not found"))?;
+
+    Ok(MessageWithAuthor {
+        id: model.id,
+        channel_id: model.channel_id,
+        author_user_id: model.author_user_id,
+        author_display_name: user.display_name,
+        body: model.body,
+        created_at: model.created_at,
+    })
 }
 
 pub async fn list_messages(
@@ -317,18 +370,30 @@ pub async fn create_direct_message(
     sender_user_id: Uuid,
     recipient_user_id: Uuid,
     body: &str,
-) -> Result<()> {
-    direct_messages::Entity::insert(direct_messages::ActiveModel {
+) -> Result<DmMessageWithAuthor> {
+    let model = direct_messages::Entity::insert(direct_messages::ActiveModel {
         id: Set(Uuid::new_v4()),
         sender_user_id: Set(sender_user_id),
         recipient_user_id: Set(recipient_user_id),
         body: Set(body.to_string()),
         ..Default::default()
     })
-    .exec(db)
+    .exec_with_returning(db)
     .await?;
 
-    Ok(())
+    let user = users::Entity::find_by_id(sender_user_id)
+        .one(db)
+        .await?
+        .ok_or_else(|| anyhow!("sender not found"))?;
+
+    Ok(DmMessageWithAuthor {
+        id: model.id,
+        author_user_id: model.sender_user_id,
+        recipient_user_id: model.recipient_user_id,
+        author_display_name: user.display_name,
+        body: model.body,
+        created_at: model.created_at,
+    })
 }
 
 pub async fn list_direct_messages(
@@ -385,7 +450,10 @@ pub async fn list_direct_messages(
         .collect())
 }
 
-pub async fn list_dm_conversations(db: &DatabaseConnection, current_user_id: Uuid) -> Result<Vec<DmConversation>> {
+pub async fn list_dm_conversations(
+    db: &DatabaseConnection,
+    current_user_id: Uuid,
+) -> Result<Vec<DmConversation>> {
     let rows = direct_messages::Entity::find()
         .filter(
             Condition::any()
@@ -396,7 +464,8 @@ pub async fn list_dm_conversations(db: &DatabaseConnection, current_user_id: Uui
         .all(db)
         .await?;
 
-    let mut latest_by_peer = std::collections::HashMap::<Uuid, chrono::DateTime<chrono::FixedOffset>>::new();
+    let mut latest_by_peer =
+        std::collections::HashMap::<Uuid, chrono::DateTime<chrono::FixedOffset>>::new();
     for row in rows {
         let peer_id = if row.sender_user_id == current_user_id {
             row.recipient_user_id
@@ -496,7 +565,10 @@ fn validate_invite(invite: &invites::Model) -> Result<()> {
     Ok(())
 }
 
-async fn increment_invite_use_count(txn: &DatabaseTransaction, invite: invites::Model) -> Result<()> {
+async fn increment_invite_use_count(
+    txn: &DatabaseTransaction,
+    invite: invites::Model,
+) -> Result<()> {
     let next_count = invite.use_count + 1;
     let mut active: invites::ActiveModel = invite.into();
     active.use_count = Set(next_count);

src/handlers.rs

@@ -11,7 +11,7 @@ use uuid::Uuid;
 use crate::{
     AppState,
     auth::{self, ApiError, AuthUser},
-    db, voice,
+    chat, db, voice,
 };
 
 pub fn routes() -> Router<AppState> {
@@ -22,17 +22,27 @@ pub fn routes() -> Router<AppState> {
         .route("/auth/logout", post(auth_logout))
         .route("/me", get(me))
         .route("/dms", get(list_dm_conversations))
-        .route("/dms/{other_user_id}/messages", get(list_dm_messages).post(send_dm_message))
+        .route(
+            "/dms/{other_user_id}/messages",
+            get(list_dm_messages).post(send_dm_message),
+        )
         .route("/rtc-config", get(rtc_config))
         .route("/guilds", get(list_guilds).post(create_guild))
         .route("/guilds/{guild_id}/members", get(list_guild_members))
         .route("/guilds/{guild_id}/channels", get(list_channels))
-        .route("/guilds/{guild_id}/voice-presence", get(guild_voice_presence))
+        .route(
+            "/guilds/{guild_id}/voice-presence",
+            get(guild_voice_presence),
+        )
         .route("/guilds/{guild_id}/invites", post(create_invite))
         .route("/invites/{code}/join", post(join_invite))
         .route("/channels", post(create_channel))
-        .route("/channels/{channel_id}/messages", get(list_messages).post(send_message))
+        .route(
+            "/channels/{channel_id}/messages",
+            get(list_messages).post(send_message),
+        )
         .route("/channels/{channel_id}/voice/ws", get(voice_ws))
+        .route("/ws", get(chat_ws))
 }
 
 pub async fn health() -> &'static str {
@@ -142,7 +152,10 @@ async fn auth_callback(
         .map_err(|e| ApiError::bad_request(&format!("token exchange failed: {e}")))?;
 
     if !token_res.status().is_success() {
-        let text = token_res.text().await.unwrap_or_else(|_| "<no body>".to_string());
+        let text = token_res
+            .text()
+            .await
+            .unwrap_or_else(|_| "<no body>".to_string());
         return Err(ApiError::bad_request(&format!(
             "token exchange returned non-success: {text}"
         )));
@@ -162,7 +175,10 @@ async fn auth_callback(
         .map_err(|e| ApiError::bad_request(&format!("userinfo request failed: {e}")))?;
 
     if !userinfo_res.status().is_success() {
-        let text = userinfo_res.text().await.unwrap_or_else(|_| "<no body>".to_string());
+        let text = userinfo_res
+            .text()
+            .await
+            .unwrap_or_else(|_| "<no body>".to_string());
         return Err(ApiError::bad_request(&format!(
             "userinfo returned non-success: {text}"
         )));
@@ -185,9 +201,12 @@ async fn auth_callback(
     .await
     .map_err(|e| ApiError::internal(&format!("failed to persist user: {e}")))?;
 
-    let session_cookie =
-        auth::new_session_cookie(user.id, &state.settings.session_secret, state.settings.cookie_secure)
-            .map_err(|e| ApiError::internal(&e.to_string()))?;
+    let session_cookie = auth::new_session_cookie(
+        user.id,
+        &state.settings.session_secret,
+        state.settings.cookie_secure,
+    )
+    .map_err(|e| ApiError::internal(&e.to_string()))?;
 
     let mut headers = HeaderMap::new();
     headers.append(
@@ -232,7 +251,10 @@ struct RtcIceServer {
     credential: Option<String>,
 }
 
-async fn rtc_config(State(state): State<AppState>, _user: AuthUser) -> Result<impl IntoResponse, ApiError> {
+async fn rtc_config(
+    State(state): State<AppState>,
+    _user: AuthUser,
+) -> Result<impl IntoResponse, ApiError> {
     let mut ice_servers = Vec::new();
 
     if !state.settings.stun_urls.is_empty() {
@@ -441,9 +463,13 @@ async fn create_channel(
         return Err(ApiError::bad_request("channel name must be 1..64 chars"));
     }
 
-    let kind = body.kind.unwrap_or_else(|| db::CHANNEL_KIND_TEXT.to_string());
+    let kind = body
+        .kind
+        .unwrap_or_else(|| db::CHANNEL_KIND_TEXT.to_string());
     if kind != db::CHANNEL_KIND_TEXT && kind != db::CHANNEL_KIND_VOICE {
-        return Err(ApiError::bad_request("channel kind must be 'text' or 'voice'"));
+        return Err(ApiError::bad_request(
+            "channel kind must be 'text' or 'voice'",
+        ));
     }
 
     let channel = db::create_channel(&state.db, body.guild_id, trimmed, &kind)
@@ -497,10 +523,31 @@ async fn send_message(
         return Err(ApiError::bad_request("message body must be 1..4000 chars"));
     }
 
-    db::create_message(&state.db, channel_id, user.id, content)
+    let message = db::create_message(&state.db, channel_id, user.id, content)
         .await
         .map_err(|e| ApiError::internal(&format!("failed to create message: {e}")))?;
 
+    // Broadcast to all guild members
+    let guild_id = db::guild_id_for_channel(&state.db, channel_id)
+        .await
+        .map_err(|e| ApiError::internal(&format!("channel lookup failed: {e}")))?
+        .ok_or_else(|| ApiError::internal("channel not found after creation"))?;
+
+    let members = db::list_guild_member_ids(&state.db, guild_id)
+        .await
+        .map_err(|e| ApiError::internal(&format!("failed to list guild members: {e}")))?;
+
+    state
+        .chat
+        .broadcast_to_many(
+            members,
+            chat::ServerEvent::MessageCreated {
+                channel_id,
+                message: serde_json::to_value(&message).unwrap_or_default(),
+            },
+        )
+        .await;
+
     Ok((StatusCode::CREATED, Json(SendMessageResponse { ok: true })))
 }
 
@@ -557,10 +604,32 @@ async fn send_dm_message(
         return Err(ApiError::bad_request("message body must be 1..4000 chars"));
     }
 
-    db::create_direct_message(&state.db, user.id, other_user_id, content)
+    let message = db::create_direct_message(&state.db, user.id, other_user_id, content)
         .await
         .map_err(|e| ApiError::internal(&format!("failed to create dm message: {e}")))?;
 
+    // Broadcast to both users
+    state
+        .chat
+        .broadcast_to_user(
+            user.id,
+            chat::ServerEvent::DmCreated {
+                other_user_id,
+                message: serde_json::to_value(&message).unwrap_or_default(),
+            },
+        )
+        .await;
+    state
+        .chat
+        .broadcast_to_user(
+            other_user_id,
+            chat::ServerEvent::DmCreated {
+                other_user_id: user.id,
+                message: serde_json::to_value(&message).unwrap_or_default(),
+            },
+        )
+        .await;
+
     Ok((StatusCode::CREATED, Json(SendMessageResponse { ok: true })))
 }
 
@@ -581,15 +650,27 @@ async fn voice_ws(
         })?;
 
     if channel.kind != db::CHANNEL_KIND_VOICE {
-        return Err(ApiError::bad_request("voice websocket requires a voice channel"));
+        return Err(ApiError::bad_request(
+            "voice websocket requires a voice channel",
+        ));
     }
 
-    Ok(ws.on_upgrade(move |socket| {
-        voice::handle_socket(state, socket, channel_id, user.id)
-    }))
+    Ok(ws.on_upgrade(move |socket| voice::handle_socket(state, socket, channel_id, user.id)))
 }
 
-async fn ensure_guild_member(state: &AppState, guild_id: Uuid, user_id: Uuid) -> Result<(), ApiError> {
+async fn chat_ws(
+    ws: WebSocketUpgrade,
+    State(state): State<AppState>,
+    user: AuthUser,
+) -> Result<impl IntoResponse, ApiError> {
+    Ok(ws.on_upgrade(move |socket| chat::handle_socket(state, socket, user.id)))
+}
+
+async fn ensure_guild_member(
+    state: &AppState,
+    guild_id: Uuid,
+    user_id: Uuid,
+) -> Result<(), ApiError> {
     let is_member = db::is_member_of_guild(&state.db, guild_id, user_id)
         .await
         .map_err(|e| ApiError::internal(&format!("membership check failed: {e}")))?;
@@ -604,7 +685,11 @@ async fn ensure_guild_member(state: &AppState, guild_id: Uuid, user_id: Uuid) ->
     Ok(())
 }
 
-async fn ensure_channel_member(state: &AppState, channel_id: Uuid, user_id: Uuid) -> Result<(), ApiError> {
+async fn ensure_channel_member(
+    state: &AppState,
+    channel_id: Uuid,
+    user_id: Uuid,
+) -> Result<(), ApiError> {
     let guild_id = db::guild_id_for_channel(&state.db, channel_id)
         .await
         .map_err(|e| ApiError::internal(&format!("channel lookup failed: {e}")))?

src/main.rs

@@ -1,4 +1,5 @@
 mod auth;
+mod chat;
 mod config;
 mod db;
 mod entity;
@@ -24,6 +25,7 @@ pub struct AppState {
     pub settings: Arc<Settings>,
     pub http: reqwest::Client,
     pub voice: Arc<VoiceHub>,
+    pub chat: Arc<chat::ChatHub>,
 }
 
 #[tokio::main]
@@ -46,6 +48,7 @@ async fn main() -> anyhow::Result<()> {
         settings,
         http: reqwest::Client::new(),
         voice: Arc::new(VoiceHub::default()),
+        chat: Arc::new(chat::ChatHub::default()),
     };
     let port = state.settings.port;
 

static/app.js

@@ -16,13 +16,13 @@ const state = {
     localStream: null,
     rawStream: null,
     audioContext: null,
-    denoiserNode: null,
-    deepFilterCore: null,
     peerConnections: new Map(),
     muted: false,
     iceServers: [{ urls: "stun:stun.l.google.com:19302" }],
   },
   voicePresencePollId: null,
+  chatWs: null,
+  lastMessageId: null,
 };
 
 const el = {
@@ -140,10 +140,47 @@ function formatDate(isoString) {
   return d.toLocaleDateString();
 }
 
-const DEEPFILTERNET_LIB_PATH = "/static/vendor/deepfilternet3/index.esm.js";
-const NSNET2_COMPAT_SUPPRESSION = 56;
+let audioCtx = null;
+function playSound(type) {
+  try {
+    if (!audioCtx) audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+    if (audioCtx.state === 'suspended') audioCtx.resume();
 
-let deepFilterLibPromise = null;
+    const sounds = {
+      message: { freq: 880, type: 'sine', duration: 0.1, volume: 0.1 },
+      dm: { freq: [660, 880], type: 'sine', duration: 0.15, volume: 0.1 },
+      join: { freq: [440, 880], type: 'sine', duration: 0.2, volume: 0.1 },
+      leave: { freq: [880, 440], type: 'sine', duration: 0.2, volume: 0.1 },
+      'peer-join': { freq: [660, 990], type: 'sine', duration: 0.15, volume: 0.05 },
+      'peer-leave': { freq: [990, 660], type: 'sine', duration: 0.15, volume: 0.05 },
+    };
+
+    const s = sounds[type];
+    if (!s) return;
+
+    const osc = audioCtx.createOscillator();
+    const gain = audioCtx.createGain();
+
+    osc.type = s.type;
+    if (Array.isArray(s.freq)) {
+      osc.frequency.setValueAtTime(s.freq[0], audioCtx.currentTime);
+      osc.frequency.exponentialRampToValueAtTime(s.freq[1], audioCtx.currentTime + s.duration);
+    } else {
+      osc.frequency.setValueAtTime(s.freq, audioCtx.currentTime);
+    }
+
+    gain.gain.setValueAtTime(s.volume, audioCtx.currentTime);
+    gain.gain.exponentialRampToValueAtTime(0.01, audioCtx.currentTime + s.duration);
+
+    osc.connect(gain);
+    gain.connect(audioCtx.destination);
+
+    osc.start();
+    osc.stop(audioCtx.currentTime + s.duration);
+  } catch (err) {
+    console.warn("playSound failed", err);
+  }
+}
 const LAST_GUILD_STORAGE_KEY = "chattz:lastGuildId";
 
 // --- Renderers ---
@@ -183,7 +220,7 @@ function renderChannels() {
   for (const channel of state.channels) {
     const row = document.createElement("button");
     row.className = `channel-row ${(channel.kind === 'text' && state.selectedTextChannelId === channel.id) ||
-        (channel.kind === 'voice' && state.selectedVoiceChannelId === channel.id) ? "active" : ""
+      (channel.kind === 'voice' && state.selectedVoiceChannelId === channel.id) ? "active" : ""
       }`;
 
     const iconName = channel.kind === 'text' ? 'hash' : 'volume-2';
@@ -291,6 +328,14 @@ function renderMessages(messages) {
     lastTime = mDate;
   }
 
+  if (messages.length > 0) {
+    const latest = messages[0];
+    if (state.lastMessageId && latest.id !== state.lastMessageId && latest.author_user_id !== state.me?.id) {
+      playSound(state.selectedDmUserId ? 'dm' : 'message');
+    }
+    state.lastMessageId = latest.id;
+  }
+
   el.messageList.scrollTop = el.messageList.scrollHeight;
 }
 
@@ -422,6 +467,39 @@ function startVoicePresencePolling() {
   }, 3000);
 }
 
+function initChatWs() {
+  if (state.chatWs) state.chatWs.close();
+  const protocol = location.protocol === "https:" ? "wss:" : "ws:";
+  const wsUrl = `${protocol}//${location.host}/ws`;
+  const ws = new WebSocket(wsUrl);
+  state.chatWs = ws;
+
+  ws.onmessage = (event) => {
+    const msg = JSON.parse(event.data);
+    if (msg.type === "message_created") {
+      if (state.selectedTextChannelId === msg.channel_id) {
+        // Optimization: we could just push the message, but refresh for now
+        api(`/channels/${state.selectedTextChannelId}/messages?limit=100`).then(renderMessages);
+      } else {
+        // Even if not active, play sound
+        playSound('message');
+      }
+    } else if (msg.type === "dm_created") {
+      if (state.selectedDmUserId === msg.other_user_id) {
+        api(`/dms/${state.selectedDmUserId}/messages?limit=100`).then(renderMessages);
+      } else {
+        playSound('dm');
+        loadDMConversations().then(renderDMs);
+      }
+    }
+  };
+
+  ws.onclose = () => {
+    console.log("Chat WS closed, reconnecting...");
+    setTimeout(initChatWs, 3000);
+  };
+}
+
 // --- Voice ---
 
 function getVoiceWsUrl(channelId) {
@@ -434,40 +512,7 @@ function shouldInitiateOffer(peerId) {
   return state.me.id > peerId;
 }
 
-async function loadDeepFilterLib() {
-  if (!deepFilterLibPromise) {
-    deepFilterLibPromise = import(DEEPFILTERNET_LIB_PATH);
-  }
-  return deepFilterLibPromise;
-}
-
-async function buildDenoiserNode(audioContext) {
-  if (!audioContext.audioWorklet) {
-    throw new Error("AudioWorklet is not supported in this browser");
-  }
-
-  const df = await loadDeepFilterLib();
-  const core = new df.DeepFilterNet3Core({
-    sampleRate: 48000,
-    noiseReductionLevel: NSNET2_COMPAT_SUPPRESSION,
-    assetConfig: {
-      cdnUrl: "/static/vendor/deepfilternet3",
-    },
-  });
-  await core.initialize();
-  const workletNode = await core.createAudioWorkletNode(audioContext);
-  state.voice.deepFilterCore = core;
-  return workletNode;
-}
-
 function stopAndClearAudioPipeline() {
-  if (state.voice.deepFilterCore) {
-    state.voice.deepFilterCore.destroy();
-    state.voice.deepFilterCore = null;
-  }
-  if (state.voice.denoiserNode && typeof state.voice.denoiserNode.destroy === "function") {
-    state.voice.denoiserNode.destroy();
-  }
   if (state.voice.localStream) {
     for (const track of state.voice.localStream.getTracks()) track.stop();
   }
@@ -480,8 +525,6 @@ function stopAndClearAudioPipeline() {
   state.voice.localStream = null;
   state.voice.rawStream = null;
   state.voice.audioContext = null;
-  state.voice.denoiserNode = null;
-  state.voice.deepFilterCore = null;
 }
 
 async function buildAudioPipeline(rawStream) {
@@ -492,14 +535,8 @@ async function buildAudioPipeline(rawStream) {
 
   let head = source;
 
-  const denoiserNode = await buildDenoiserNode(audioContext);
-  if (denoiserNode) {
-    head.connect(denoiserNode);
-    head = denoiserNode;
-  }
   head.connect(destination);
 
-  state.voice.denoiserNode = denoiserNode;
   return destination.stream;
 }
 
@@ -621,6 +658,7 @@ async function joinVoice() {
     const channel = state.channels.find(c => c.id === state.selectedVoiceChannelId);
     el.vcChannelName.textContent = channel ? channel.name : "Voice";
     el.voiceConnection.classList.remove("hidden");
+    playSound('join');
     refreshVoicePresence().catch(() => { });
   };
 
@@ -631,8 +669,10 @@ async function joinVoice() {
         if (shouldInitiateOffer(peer.user_id)) await sendOffer(peer.user_id);
       }
     } else if (msg.type === "peer_joined") {
+      playSound('peer-join');
       if (shouldInitiateOffer(msg.user_id)) await sendOffer(msg.user_id);
     } else if (msg.type === "peer_left") {
+      playSound('peer-leave');
       const pc = state.voice.peerConnections.get(msg.user_id);
       if (pc) {
         pc.close();
@@ -652,6 +692,7 @@ async function joinVoice() {
     stopAndClearAudioPipeline();
     state.voice.joinedChannelId = null;
     state.voice.ws = null;
+    playSound('leave');
     refreshVoicePresence().catch(() => { });
   };
 }
@@ -893,6 +934,7 @@ async function init() {
       updateHeaderLabels();
     }
 
+    initChatWs();
     startVoicePresencePolling();
     lucide.createIcons();
   } catch (err) {