Notify controller when users join/leave rooms.

src/client.rs

@@ -416,13 +416,16 @@ impl Client {
         let result = self.rooms.insert_member(
             &response.room_name, response.user_name.clone()
         );
-        match result {
-            Ok(()) => {
-                self.users.insert(response.user_name, response.user);
-                // TODO send control response
-            },
-            Err(err) => error!("RoomUserJoinedResponse: {}", err)
+        if let Err(err) = result {
+            error!("RoomUserJoinedResponse: {}", err);
+            return
         }
+        self.send_to_controller(control::Response::RoomUserJoinedResponse(
+            control::RoomUserJoinedResponse {
+                room_name: response.room_name,
+                user_name: response.user_name,
+            }
+        ));
     }
 
     fn handle_room_user_left_response(
@@ -431,12 +434,16 @@ impl Client {
         let result = self.rooms.remove_member(
             &response.room_name, &response.user_name
         );
-        match result {
-            Ok(()) => {
-                // TODO send control response
-            },
-            Err(err) => error!("RoomUserLeftResponse: {}", err)
+        if let Err(err) = result {
+            error!("RoomUserLeftResponse: {}", err);
+            return
         }
+        self.send_to_controller(control::Response::RoomUserLeftResponse(
+            control::RoomUserLeftResponse {
+                room_name: response.room_name,
+                user_name: response.user_name,
+            }
+        ));
     }
 
     fn handle_user_info_response(&mut self, response: UserInfoResponse) {

src/control/response.rs

@@ -10,6 +10,8 @@ pub enum Response {
     RoomLeaveResponse(String),
     RoomListResponse(RoomListResponse),
     RoomMessageResponse(RoomMessageResponse),
+    RoomUserJoinedResponse(RoomUserJoinedResponse),
+    RoomUserLeftResponse(RoomUserLeftResponse),
     UserInfoResponse(UserInfoResponse),
 }
 
@@ -66,6 +68,20 @@ pub struct RoomMessageResponse {
     pub message: String,
 }
 
+/// This struct describes the fact that the given user joined the given room.
+#[derive(Debug, RustcDecodable, RustcEncodable)]
+pub struct RoomUserJoinedResponse {
+    pub room_name: String,
+    pub user_name: String,
+}
+
+/// This struct describes the fact that the given user left the given room.
+#[derive(Debug, RustcDecodable, RustcEncodable)]
+pub struct RoomUserLeftResponse {
+    pub room_name: String,
+    pub user_name: String,
+}
+
 /// This struct contains the last known information about a given user.
 #[derive(Debug, RustcDecodable, RustcEncodable)]
 pub struct UserInfoResponse {