Fixed issue where errored single videos in playlist/sub downloads in yt-dlp would cause the entire sub check to fail (#493)

backend/subscriptions.js

@@ -241,65 +241,22 @@ async function getVideosForSub(sub, user_uid = null) {
             logger.verbose('Subscription: finished check for ' + sub.name);
             if (err && !output) {
                 logger.error(err.stderr ? err.stderr : err.message);
-                if (err.stderr.includes('This video is unavailable')) {
+                if (err.stderr.includes('This video is unavailable') || err.stderr.includes('Private video')) {
                     logger.info('An error was encountered with at least one video, backup method will be used.')
                     try {
-                        // TODO: reimplement
-
-                        // const outputs = err.stdout.split(/\r\n|\r|\n/);
-                        // for (let i = 0; i < outputs.length; i++) {
-                        //     const output = JSON.parse(outputs[i]);
-                        //     await handleOutputJSON(sub, output, i === 0, multiUserMode)
-                        //     if (err.stderr.includes(output['id']) && archive_path) {
-                        //         // we found a video that errored! add it to the archive to prevent future errors
-                        //         if (sub.archive) {
-                        //             archive_dir = sub.archive;
-                        //             archive_path = path.join(archive_dir, 'archive.txt')
-                        //             fs.appendFileSync(archive_path, output['id']);
-                        //         }
-                        //     }
-                        // }
+                        const outputs = err.stdout.split(/\r\n|\r|\n/); // .map(jsonStr => JSON.parse(jsonStr));
+                        const files_to_download = await handleOutputJSON(outputs, sub, user_uid);
+                        resolve(files_to_download);
                     } catch(e) {
                         logger.error('Backup method failed. See error below:');
                         logger.error(e);
                     }
+                } else {
+                    logger.error('Subscription check failed!');
                 }
                 resolve(false);
             } else if (output) {
-                if (config_api.getConfigItem('ytdl_subscriptions_redownload_fresh_uploads')) {
-                    await setFreshUploads(sub, user_uid);
-                    checkVideosForFreshUploads(sub, user_uid);
-                }
-
-                if (output.length === 0 || (output.length === 1 && output[0] === '')) {
-                    logger.verbose('No additional videos to download for ' + sub.name);
-                    resolve(true);
-                    return;
-                }
-
-                const output_jsons = [];
-                for (let i = 0; i < output.length; i++) {
-                    let output_json = null;
-                    try {
-                        output_json = JSON.parse(output[i]);
-                        output_jsons.push(output_json);
-                    } catch(e) {
-                        output_json = null;
-                    }
-                    if (!output_json) {
-                        continue;
-                    }
-                }
-
-                const files_to_download = await getFilesToDownload(sub, output_jsons);
-                const base_download_options = generateOptionsForSubscriptionDownload(sub, user_uid);
-
-                for (let j = 0; j < files_to_download.length; j++) {
-                    const file_to_download = files_to_download[j];
-                    file_to_download['formats'] = utils.stripPropertiesFromObject(file_to_download['formats'], ['format_id', 'filesize', 'filesize_approx']);  // prevent download object from blowing up in size
-                    await downloader_api.createDownload(file_to_download['webpage_url'], sub.type || 'video', base_download_options, user_uid, sub.id, sub.name, file_to_download);
-                }
-
+                const files_to_download = await handleOutputJSON(output, sub, user_uid);
                 resolve(files_to_download);
            }
         });
@@ -309,6 +266,43 @@ async function getVideosForSub(sub, user_uid = null) {
     });
 }
 
+async function handleOutputJSON(output, sub, user_uid) {
+    if (config_api.getConfigItem('ytdl_subscriptions_redownload_fresh_uploads')) {
+        await setFreshUploads(sub, user_uid);
+        checkVideosForFreshUploads(sub, user_uid);
+    }
+
+    if (output.length === 0 || (output.length === 1 && output[0] === '')) {
+        logger.verbose('No additional videos to download for ' + sub.name);
+        return [];
+    }
+
+    const output_jsons = [];
+    for (let i = 0; i < output.length; i++) {
+        let output_json = null;
+        try {
+            output_json = JSON.parse(output[i]);
+            output_jsons.push(output_json);
+        } catch(e) {
+            output_json = null;
+        }
+        if (!output_json) {
+            continue;
+        }
+    }
+
+    const files_to_download = await getFilesToDownload(sub, output_jsons);
+    const base_download_options = generateOptionsForSubscriptionDownload(sub, user_uid);
+
+    for (let j = 0; j < files_to_download.length; j++) {
+        const file_to_download = files_to_download[j];
+        file_to_download['formats'] = utils.stripPropertiesFromObject(file_to_download['formats'], ['format_id', 'filesize', 'filesize_approx']);  // prevent download object from blowing up in size
+        await downloader_api.createDownload(file_to_download['webpage_url'], sub.type || 'video', base_download_options, user_uid, sub.id, sub.name, file_to_download);
+    }
+
+    return files_to_download;
+}
+
 function generateOptionsForSubscriptionDownload(sub, user_uid) {
     let basePath = null;
     if (user_uid)