Fix See Later artefacts

backend/app/controllers/playlist.controller.js

@@ -238,6 +238,7 @@ export async function getSeeLater(req, res) {
     const client = await getClient();
     const query = `
         SELECT
+            COALESCE(
                 JSON_AGG(
                     json_build_object(
                         'video_id', videos.id,
@@ -258,6 +259,8 @@ export async function getSeeLater(req, res) {
                             'description', channels.description
                         )
                     )
+                ) FILTER (WHERE videos.id IS NOT NULL),
+                '[]'::json
             ) AS videos
         FROM
             public.playlists
@@ -285,14 +288,14 @@ export async function getSeeLater(req, res) {
     try {
         const result = await client.query(query, [userId]);
         if (result.rows.length === 0) {
-            logger.write("No 'See Later' playlist found for user with id " + userId, 404);
+            logger.write("No 'See Later' playlist found for user with id " + userId, 200);
             client.release();
-            res.status(404).json({ error: "'See Later' playlist not found" });
+            res.status(200).json([]);
             return;
         }
         logger.write("'See Later' playlist retrieved for user with id " + userId, 200);
         client.release();
-        res.status(200).json(result.rows[0].videos);
+        res.status(200).json(result.rows[0].videos || []);
     } catch (error) {
         logger.write("Error retrieving 'See Later' playlist: " + error.message, 500);
         client.release();

backend/logs/access.log

@@ -11461,3 +11461,26 @@
 [2025-08-31 10:29:58.869] [undefined] GET(/:id/stats): try to get stats
 [2025-08-31 10:29:58.875] [undefined] GET(/:id): Successfully get channel with id 1 with status 200
 [2025-08-31 10:29:58.885] [undefined] GET(/:id/stats): Successfully get stats with status 200
+[2025-08-31 10:30:58.389] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:34:12.979] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:34:15.647] [undefined] GET(/:id): failed due to invalid values with status 400
+[2025-09-03 17:34:15.660] [undefined] GET(/:id/similar): failed due to invalid values with status 400
+[2025-09-03 17:34:15.671] [undefined] GET(/user/:id): Playlists retrieved for user with id 1 with status 200
+[2025-09-03 17:34:15.736] [undefined] GET(/:id/views): failed due to invalid values with status 400
+[2025-09-03 17:34:24.176] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:34:26.470] [undefined] GET(/:id): failed due to invalid values with status 400
+[2025-09-03 17:34:26.478] [undefined] GET(/user/:id): Playlists retrieved for user with id 1 with status 200
+[2025-09-03 17:34:26.485] [undefined] GET(/:id/similar): failed due to invalid values with status 400
+[2025-09-03 17:34:26.494] [undefined] GET(/:id/views): failed due to invalid values with status 400
+[2025-09-03 17:34:26.941] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:34:29.468] [undefined] GET(/:id/history): try to retrieve history of user 1
+[2025-09-03 17:34:29.523] [undefined] GET(/:id/history): successfully retrieved history of user 1 with status 200
+[2025-09-03 17:34:29.535] [undefined] GET(/:id/channel): try to retrieve channel of user 1
+[2025-09-03 17:34:29.541] [undefined] GET(/:id/channel): successfully retrieved channel of user 1 with status 200
+[2025-09-03 17:34:29.550] [undefined] GET(/user/:id): Playlists retrieved for user with id 1 with status 200
+[2025-09-03 17:34:30.404] [undefined] GET(/:id): Playlist retrieved with id 1 with status 200
+[2025-09-03 17:34:31.607] [undefined] DELETE(/:id/video/:videoId): Video deleted from playlist with id 1 with status 200
+[2025-09-03 17:34:31.690] [undefined] GET(/:id): Playlist retrieved with id 1 with status 200
+[2025-09-03 17:34:32.741] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:34:41.091] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200
+[2025-09-03 17:35:57.790] [undefined] GET(/see-later): 'See Later' playlist retrieved for user with id 1 with status 200