add room owner check to room manager

excalidraw-app/data/roomManager.ts

@@ -176,6 +176,24 @@ class RoomManager {
     }
   }
 
+  async isRoomOwnedByUser(url: string): Promise<boolean> {
+    try {
+      const rooms = await this.loadRooms();
+      const _url = new URL(url);
+      const match = _url.hash.match(/room=([^,]+),([^&]+)/);
+
+      if (!match) {
+        return false;
+      }
+
+      const [, roomId] = match;
+      return rooms.some((room) => room.roomId === roomId);
+    } catch (error) {
+      console.warn("Failed to check room ownership:", error);
+      return false;
+    }
+  }
+
   async getCurrentRoom(): Promise<CollabRoom | null> {
     const rooms = await this.loadRooms();
     if (rooms.length === 0) {

excalidraw-app/share/ShareDialog.tsx

@@ -75,23 +75,12 @@ const ActiveRoomDialog = ({
   const [isRoomOwner, setIsRoomOwner] = useState(false);
   useEffect(() => {
     roomManager
-      .getCurrentRoom()
+      .isRoomOwnedByUser(activeRoomLink)
-      .then((room) => {
+      .then((isOwned) => {
-        if (room) {
+        setIsRoomOwner(isOwned);
-          const _room = new URL(activeRoomLink);
-          const match = _room.hash.match(/room=([^,]+),([^&]+)/);
-          if (match) {
-            const [, roomId] = match;
-            setIsRoomOwner(roomId === room.roomId);
-          } else {
-            setIsRoomOwner(false);
-          }
-        } else {
-          setIsRoomOwner(false);
-        }
       })
       .catch((error) => {
-        console.error("Error getting current room:", error);
+        console.warn("Failed to check room ownership:", error);
         setIsRoomOwner(false);
       });
   }, [activeRoomLink]);