logique de creation de discussions

src/app/core/chat/discussion.service.ts

@@ -24,4 +24,8 @@ export class discussionsService {
     getMessages(discussionId: string): Observable<Message[]> {
         return this.http.get<Message[]>(`${this.apiUrl}/discussions/${discussionId}/messages`);
     }
+
+    createPrivateDiscussion(username: string): Observable<Discussion> {
+        return this.http.post<Discussion>(`${this.apiUrl}/discussions/private`, { username });
+    }
 }