set subtitle dispositions based on title

Community/Tdarr_Plugin_gabehf_Set_Subtitle_Dispositions.js

@@ -0,0 +1,118 @@
+// tdarrSkipTest
+/* eslint max-len: 0, no-plusplus: ["error", { "allowForLoopAfterthoughts": true }] */
+const details = () => ({
+  id: 'Tdarr_Plugin_gabehf_Set_Subtitle_Dispositions',
+  Stage: 'Pre-processing',
+  Name: 'Set Subtitle Dispositions',
+  Type: 'Subtitle',
+  Operation: 'Transcode',
+  Description:
+    'This plugin sets the disposition of specified subtitle tracks based on track titles, and removes the disposition from any non-matching tracks. \n\n',
+  Version: '1.0',
+  Tags: 'pre-processing,ffmpeg,subtitle only,configurable',
+  Inputs: [{
+    name: 'titles_to_set_default',
+    type: 'string',
+    defaultValue: '',
+    inputUI: {
+      type: 'text',
+    },
+    tooltip:
+      'Specify titles to set as default, separated by a comma. If a track contains any of those titles, it will be made default.',
+  },
+  {
+    name: 'titles_to_set_forced',
+    type: 'string',
+    defaultValue: '',
+    inputUI: {
+      type: 'text',
+    },
+    tooltip:
+      'Specify titles to set as forced, separated by a comma. If a track contains any of those titles, it will be made forced.',
+  },
+  {
+    name: 'titles_to_remove_disposition',
+    type: 'string',
+    defaultValue: '',
+    inputUI: {
+      type: 'text',
+    },
+    tooltip:
+      'Specify titles to remove dispositions from, separated by a comma. If a track contains any of those titles, its disposition will be set to 0 (none).',
+  }],
+});
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+const plugin = (file, librarySettings, inputs, otherArguments) => {
+  const lib = require('../methods/lib')();
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars,no-param-reassign
+  inputs = lib.loadDefaultValues(inputs, details);
+  const response = {
+    processFile: false,
+    preset: '',
+    container: `.${file.container}`,
+    handBrakeMode: false,
+    FFmpegMode: true,
+    reQueueAfter: false,
+    infoLog: '',
+  };
+
+  // Check if file is a video. If it isn't then exit plugin.
+  if (file.fileMedium !== 'video') {
+    // eslint-disable-next-line no-console
+    console.log('File is not video');
+    response.infoLog += '☒File is not video \n';
+    response.processFile = false;
+    return response;
+  }
+
+  // Set up required variables.
+  let ffmpegCommandInsert = '';
+  let subtitleIdx = 0;
+  let convert = false;
+
+  const titles_to_set_forced = inputs.titles_to_set_forced === undefined || inputs.titles_to_set_forced === '' ? [] : inputs.titles_to_set_forced.split(',').map((s) => s.toLowerCase());
+  const titles_to_set_default = inputs.titles_to_set_default === undefined || inputs.titles_to_set_default === '' ? [] : inputs.titles_to_set_default.split(',').map((s) => s.toLowerCase());
+  const titles_to_remove_disposition = inputs.titles_to_remove_disposition === undefined || inputs.titles_to_remove_disposition === '' ? [] : inputs.titles_to_remove_disposition.split(',').map((s) => s.toLowerCase());
+
+  // Go through each stream in the file.
+  for (let i = 0; i < file.ffProbeData.streams.length; i++) {
+    // Catch error here incase the title metadata is completely missing.
+    try {
+      // Check if stream is subtitle
+      if (file.ffProbeData.streams[i].codec_type.toLowerCase() === 'subtitle') {
+        // Check if the subtitle stream title matches the make default input(s)
+        if (titles_to_set_default.some((s) => file.ffProbeData.streams[i].tags.title.toLowerCase().includes(s))) {
+          ffmpegCommandInsert += `-disposition:s:${subtitleIdx} default `;
+          response.infoLog += `☒Subtitle stream 0:s:${subtitleIdx} detected as being ${titles_to_set_default}; setting as default. \n`;
+          convert = true;
+        } else if (titles_to_set_forced.some((s) => file.ffProbeData.streams[i].tags.title.toLowerCase().includes(s))) {
+          ffmpegCommandInsert += `-disposition:s:${subtitleIdx} forced `;
+          response.infoLog += `☒Subtitle stream 0:s:${subtitleIdx} detected as being ${titles_to_set_forced}; setting as forced. \n`;
+          convert = true;
+        } else if (titles_to_remove_disposition.some((s) => file.ffProbeData.streams[i].tags.title.toLowerCase().includes(s))) {
+          ffmpegCommandInsert += `-disposition:s:${subtitleIdx} 0 `;
+          response.infoLog += `☒Subtitle stream 0:s:${subtitleIdx} detected as being ${titles_to_remove_disposition}; removing disposition. \n`;
+          convert = true;
+        }
+        subtitleIdx += 1; // increment current subtitle id
+      }
+    } catch (err) {
+      // Error
+    }
+  }
+
+  // Convert file if convert variable is set to true.
+  if (convert === true) {
+    response.processFile = true;
+    response.preset = `, -map 0 ${ffmpegCommandInsert} -c copy -max_muxing_queue_size 9999`;
+    response.container = `.${file.container}`;
+    response.reQueueAfter = true;
+  } else {
+    response.processFile = false;
+    response.infoLog += "☑File doesn't contain subtitle tracks that require modification.\n";
+  }
+  return response;
+};
+module.exports.details = details;
+module.exports.plugin = plugin;