fix typing indicator on wrong server

src/app/features/chat/typing-indicator/typing-indicator.component.ts

@@ -3,10 +3,13 @@ import {
   Component,
   inject,
   signal,
-  DestroyRef
+  DestroyRef,
+  effect
 } from '@angular/core';
 import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
+import { Store } from '@ngrx/store';
 import { WebRTCService } from '../../../core/services/webrtc.service';
+import { selectCurrentRoom } from '../../../store/rooms/rooms.selectors';
 import {
   merge,
   interval,
@@ -23,6 +26,7 @@ interface TypingSignalingMessage {
   type: string;
   displayName: string;
   oderId: string;
+  serverId: string;
 }
 
 @Component({
@@ -36,6 +40,9 @@ interface TypingSignalingMessage {
 })
 export class TypingIndicatorComponent {
   private readonly typingMap = new Map<string, { name: string; expiresAt: number }>();
+  private readonly store = inject(Store);
+  private readonly currentRoom = this.store.selectSignal(selectCurrentRoom);
+  private lastRoomId: string | null = null;
 
   typingDisplay = signal<string[]>([]);
   typingOthersCount = signal<number>(0);
@@ -47,8 +54,10 @@ export class TypingIndicatorComponent {
       filter((msg): msg is TypingSignalingMessage =>
         msg?.type === 'user_typing' &&
         typeof msg.displayName === 'string' &&
-        typeof msg.oderId === 'string'
+        typeof msg.oderId === 'string' &&
+        typeof msg.serverId === 'string'
       ),
+      filter((msg) => msg.serverId === this.currentRoom()?.id),
       tap((msg) => {
         const now = Date.now();
 
@@ -77,6 +86,17 @@ export class TypingIndicatorComponent {
     merge(typing$, purge$)
       .pipe(takeUntilDestroyed(destroyRef))
       .subscribe(() => this.recomputeDisplay());
+
+    effect(() => {
+      const roomId = this.currentRoom()?.id ?? null;
+
+      if (roomId === this.lastRoomId)
+        return;
+
+      this.lastRoomId = roomId;
+      this.typingMap.clear();
+      this.recomputeDisplay();
+    });
   }
 
   private recomputeDisplay(): void {