update to support user expire, timeout, and disconnect

crates/chattyness-db/src/queries/channel_members.rs

@@ -273,3 +273,27 @@ pub async fn set_afk<'e>(
 
     Ok(())
 }
+
+/// Update the last_moved_at timestamp to keep the member alive.
+///
+/// Called when a ping is received from the client to prevent
+/// the member from being reaped by the stale member cleanup.
+pub async fn touch_member<'e>(
+    executor: impl PgExecutor<'e>,
+    channel_id: Uuid,
+    user_id: Uuid,
+) -> Result<(), AppError> {
+    sqlx::query(
+        r#"
+        UPDATE scene.instance_members
+        SET last_moved_at = now()
+        WHERE instance_id = $1 AND user_id = $2
+        "#,
+    )
+    .bind(channel_id)
+    .bind(user_id)
+    .execute(executor)
+    .await?;
+
+    Ok(())
+}

crates/chattyness-db/src/ws_messages.rs

@@ -7,6 +7,25 @@ use uuid::Uuid;
 
 use crate::models::{AvatarRenderData, ChannelMemberInfo, ChannelMemberWithAvatar, LooseProp};
 
+/// WebSocket configuration sent to client on connect.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct WsConfig {
+    /// Interval for client to send ping to keep connection alive (seconds).
+    pub ping_interval_secs: u64,
+}
+
+/// Reason for member disconnect.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum DisconnectReason {
+    /// Graceful disconnect (browser close, normal WebSocket close).
+    Graceful,
+    /// Scene navigation (custom close code 4000).
+    SceneChange,
+    /// Timeout (connection lost, no ping response).
+    Timeout,
+}
+
 /// Client-to-server WebSocket messages.
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(tag = "type", rename_all = "snake_case")]
@@ -60,6 +79,8 @@ pub enum ServerMessage {
         member: ChannelMemberInfo,
         /// All current members with avatars.
         members: Vec<ChannelMemberWithAvatar>,
+        /// WebSocket configuration for the client.
+        config: WsConfig,
     },
 
     /// A member joined the channel.
@@ -74,6 +95,8 @@ pub enum ServerMessage {
         user_id: Option<Uuid>,
         /// Guest session ID (if guest).
         guest_session_id: Option<Uuid>,
+        /// Reason for disconnect.
+        reason: DisconnectReason,
     },
 
     /// A member updated their position.