Implement add contacts to group-chat

src/app/services/chat.service.ts

@@ -194,7 +194,6 @@ export class ChatService {
       return this.http.get(environment.apiChatUrl+'groups.history', opts);
     }
     getPublicGroupMessages(roomId:any){
-
       let params = new HttpParams();
       params = params.set("roomId", roomId);
     
@@ -216,5 +215,18 @@ export class ChatService {
     deleteChannel(body:any){
       return this.http.post(environment.apiChatUrl+'channels.delete', body, this.options);
     }
+    addUserToGroup(body:any){
+      return this.http.post(environment.apiChatUrl+'groups.invite', body, this.options);
+    }
+    getGroupInfo(roomId:any){
+      let params = new HttpParams();
+      params = params.set("roomId", roomId);
+    
+      let opts = { 
+        headers: this.headers, 
+        params: params 
+      }
+      return this.http.get(environment.apiChatUrl+'groups.info', opts);
+    }
 
 }