integrate deletion to collab sessions

excalidraw-app/data/firebase.ts

@@ -315,3 +315,10 @@ export const loadFilesFromFirebase = async (
 
   return { loadedFiles, erroredFiles };
 };
+
+export const deleteRoomFromFirebase = async (
+  roomId: string,
+  roomKey: string,
+): Promise<void> => {
+  // TODO: delete the room...
+};

excalidraw-app/data/index.ts

@@ -119,6 +119,13 @@ export type SocketUpdateDataSource = {
       username: string;
     };
   };
+  ROOM_DELETED: {
+    type: WS_SUBTYPES.DELETE;
+    payload: {
+      socketId: SocketId;
+      roomId: string;
+    };
+  };
 };
 
 export type SocketUpdateDataIncoming =
@@ -310,7 +317,7 @@ export const exportToBackend = async (
 
     const response = await fetch(BACKEND_V2_POST, {
       method: "POST",
-      body: payload.buffer,
+      body: new Uint8Array(payload.buffer),
     });
     const json = await response.json();
     if (json.id) {

excalidraw-app/data/roomManager.ts

@@ -186,7 +186,7 @@ class RoomManager {
         return false;
       }
 
-      const [, roomId] = match;
+      const roomId = match[1];
       return rooms.some((room) => room.roomId === roomId);
     } catch (error) {
       console.warn("Failed to check room ownership:", error);