improve chat remove loop

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

@@ -13,21 +13,53 @@ export class RoomService {
   chatUser: ChatUserService[] = []
   id = ''
   name = ''
+  mmm = []
+  private hasLoadHistory = false
 
   constructor(
-    private RocketChatClientService: RocketChatClientService,
+    public RocketChatClientService: RocketChatClientService,
     private MessageService: MessageService
-  ) {}
+  ) {
+    
+  }
 
   setData({id, name, lastMessage}) {
+
     this.id = id
     this.name = name
     this.lastMessage = lastMessage
   }
 
+  receiveMessage() {
+    this.RocketChatClientService.receiveLiveMessageFromRoom(
+      this.id,
+      this.constructor.name+this.id,
+      (Chatmessage)=>{
+        this.hasLoadHistory = false
+        this.loadHistory()
+      }
+    )
+  }
+
+  send(msg) {
+    this.RocketChatClientService.send(this.id, msg)
+  }
+
+  // runs onces only
+  loadHistory(limit= 100) {
+
+    if(this.hasLoadHistory){ return false }
+
+    this.RocketChatClientService.loadHistory(this.id, limit).then((message:any)=>{
+      console.log('loadHistory', message)
+      this.mmm = message.result.messages.reverse()
+    })
+
+    this.hasLoadHistory = true
+  }
+
   create() {}
-  sendMessage() {}
-  deleteMessage() {}
+  deleteMessage(msgId) {}
   ReactToMessage() {}
 
 }