improve chat remove loop

src/app/services/chat/chat.service.ts

@@ -21,33 +21,41 @@ export class ChatService {
   constructor(
     private RocketChatClientService: RocketChatClientService
   ) {
-    this.getAllRoomAndSubscribe()
+
+    (async()=>{
+      await this.getAllRoom();
+      this.subscribeToRoom()
+    })()
+    
   }
 
-  async getAllRoomAndSubscribe () {
+  async getAllRoom () {
     this.loadingWholeList = true
 
     const rooms: any = await this.RocketChatClientService.getRooms();
 
     rooms.result.update.forEach((roomData:any) => {
-      let room
+      let room:RoomService;
+
       let roomId = roomData.lastMessage.rid
       if(this.isIndividual(roomData)) {
-        room = new RoomService(new RocketChatClientService(), new MessageService())
+        room = new RoomService(this.RocketChatClientService, new MessageService())
         room.setData({
           id: this.getRoomId(roomData),
           name: this.getChatName(roomData),
           lastMessage: this.getRoomLastMessage(roomData)
         })
+        room.receiveMessage()
         this.individual[roomId] = room
         this.individualCount++
       } else {
-        room = new RoomService(new RocketChatClientService(), new MessageService())
+        room = new RoomService(this.RocketChatClientService, new MessageService())
         room.setData({
           id: this.getRoomId(roomData),
           name: this.getChatName(roomData),
           lastMessage: this.getRoomLastMessage(roomData)
         })
+        room.receiveMessage()
         this.group[roomId] = room
         this.groupCount++
       }
@@ -55,7 +63,28 @@ export class ChatService {
     });
 
     this.loadingWholeList = false
-   
+  }
+
+  subscribeToRoom() {
+    for (const id in this.individual) {
+      this.RocketChatClientService.subscribe(id).then((subscription)=>{
+        console.log('subscription', subscription)
+      })
+    }
+
+    for (const id in this.group) {
+      this.RocketChatClientService.subscribe(id).then((subscription)=>{
+        console.log('subscription', subscription)
+      })
+    }
+  }
+
+  getRoom(id): RoomService {
+    try {
+      return this.individual[id]
+    } catch(e) {
+      return this.group[id]
+    }
   }
 
   getChatName(roomData) {