fix(watchlist-sync): handle empty watchlists on PostgreSQL (#2718)

server/job/schedule.ts

@@ -97,7 +97,12 @@ export const startJobs = (): void => {
         logger.info('Starting scheduled job: Plex Watchlist Sync', {
           label: 'Jobs',
         });
-        watchlistSync.syncWatchlist();
+        watchlistSync.syncWatchlist().catch((e) => {
+          logger.error('Failed to sync watchlists', {
+            label: 'Plex Watchlist Sync',
+            errorMessage: e.message,
+          });
+        });
       }),
     });
   } else if (

server/lib/watchlistsync.ts

@@ -76,13 +76,18 @@ class WatchlistSync {
     const watchlistTmdbIds = response.items.map((i) => i.tmdbId);
 
     const requestRepository = getRepository(MediaRequest);
-    const existingAutoRequests = await requestRepository
+    const existingAutoRequests: MediaRequest[] =
+      watchlistTmdbIds.length > 0
+        ? await requestRepository
             .createQueryBuilder('request')
             .leftJoinAndSelect('request.media', 'media')
             .where('request.requestedBy = :userId', { userId: user.id })
             .andWhere('request.isAutoRequest = true')
-      .andWhere('media.tmdbId IN (:...tmdbIds)', { tmdbIds: watchlistTmdbIds })
-      .getMany();
+            .andWhere('media.tmdbId IN (:...tmdbIds)', {
+              tmdbIds: watchlistTmdbIds,
+            })
+            .getMany()
+        : [];
 
     const autoRequestedTmdbIds = new Set(
       existingAutoRequests