Add option to overwriteTrack true/false (#215)

Community/Tdarr_Plugin_b39x_the1poet_surround_sound_to_ac3.js

@@ -1,19 +1,33 @@
 const loadDefaultValues = require('../methods/loadDefaultValues');
-/* eslint-disable */
-const details = () => {
-  return {
-    id: "Tdarr_Plugin_b39x_the1poet_surround_sound_to_ac3",
-    Stage: "Pre-processing",
-    Name: "the1poet Video surround sound to ac3",
-    Type: "Video",
+
+const details = () => ({
+  id: 'Tdarr_Plugin_b39x_the1poet_surround_sound_to_ac3',
+  Stage: 'Pre-processing',
+  Name: 'the1poet Video surround sound to ac3',
+  Type: 'Video',
   Operation: 'Transcode',
-    Description: `[Contains built-in filter]  If the file has surround sound tracks not in ac3, they will be converted to ac3. \n\n
+  Description: '[Contains built-in filter]  If the file has surround sound tracks not in ac3,'
+    + ` they will be converted to ac3. \n\n
 `,
-    Version: "1.00",
-    Tags: "pre-processing,ffmpeg,audio only,",
-    Inputs:[]
-  };
-}
+  Version: '1.01',
+  Tags: 'pre-processing,ffmpeg,audio only,',
+  Inputs: [
+    {
+      name: 'overwriteTrack',
+      type: 'boolean',
+      defaultValue: true,
+      inputUI: {
+        type: 'dropdown',
+        options: [
+          'false',
+          'true',
+        ],
+      },
+      tooltip: 'Specify if you\'d like to overwrite the existing track or keep'
+        + 'it and have a new stream be created (default: true)',
+    },
+  ],
+});
 
 // eslint-disable-next-line no-unused-vars
 const plugin = (file, librarySettings, inputs, otherArguments) => {
@@ -21,66 +35,85 @@ const plugin = (file, librarySettings, inputs, otherArguments) => {
   inputs = loadDefaultValues(inputs, details);
   // Must return this object
 
-  var response = {
+  const response = {
     processFile: false,
-    preset: "",
-    container: ".mp4",
+    preset: '',
+    container: '.mp4',
     handBrakeMode: false,
     FFmpegMode: false,
     reQueueAfter: false,
-    infoLog: "",
+    infoLog: '',
   };
 
-  if (file.fileMedium !== "video") {
-    console.log("File is not video");
+  if (file.fileMedium !== 'video') {
+    // eslint-disable-next-line no-console
+    console.log('File is not video');
 
-    response.infoLog += "☒File is not video \n";
+    response.infoLog += '☒File is not video \n';
     response.processFile = false;
 
     return response;
-  } else {
-    var audioIdx = -1;
-    var ffmpegCommandInsert = "";
-    var hasnonAC3SurroundTrack = false;
+  }
+  let audioIdx = -1;
+  let ffmpegCommandInsert = '';
+  let hasnonAC3SurroundTrack = false;
+
+  let shouldTranscode = true;
+  if (inputs.overwriteTrack === false) {
+    const hasAc3_6Stream = file.ffProbeData.streams.filter((row) => row.channels === 6
+      && row.codec_name === 'ac3');
+    if (hasAc3_6Stream.length > 0) {
+      shouldTranscode = false;
+    }
+  }
 
-    for (var i = 0; i < file.ffProbeData.streams.length; i++) {
+  for (let i = 0; i < file.ffProbeData.streams.length; i += 1) {
+    const currStream = file.ffProbeData.streams[i];
     try {
-        if (file.ffProbeData.streams[i].codec_type.toLowerCase() == "audio") {
-          audioIdx++;
+      if (currStream.codec_type.toLowerCase() === 'audio') {
+        audioIdx += 1;
+      }
+    } catch (err) {
+      // eslint-disable-next-line no-console
+      console.log(err);
     }
-      } catch (err) {}
 
     try {
       if (
-          file.ffProbeData.streams[i].channels == 6 &&
-          file.ffProbeData.streams[i].codec_name !== "ac3" &&
-          file.ffProbeData.streams[i].codec_type.toLowerCase() == "audio"
+        currStream.channels === 6
+        && currStream.codec_name !== 'ac3'
+        && currStream.codec_type.toLowerCase() === 'audio'
       ) {
+        if (inputs.overwriteTrack === true) {
           ffmpegCommandInsert += ` -c:a:${audioIdx} ac3 `;
+        } else {
+          ffmpegCommandInsert += `-map 0:a:${audioIdx} -c:a:${audioIdx} ac3 `;
+        }
         hasnonAC3SurroundTrack = true;
       }
-      } catch (err) {}
+    } catch (err) {
+      // eslint-disable-next-line no-console
+      console.log(err);
+    }
   }
 
-    var ffmpegCommand = `,-map 0 -c:v copy  -c:a copy ${ffmpegCommandInsert} -c:s copy -c:d copy`;
+  const ffmpegCommand = `,-map 0 -c:v copy  -c:a copy ${ffmpegCommandInsert} -c:s copy -c:d copy`;
 
-    if (hasnonAC3SurroundTrack == true) {
+  if (shouldTranscode && hasnonAC3SurroundTrack === true) {
     response.processFile = true;
     response.preset = ffmpegCommand;
-      response.container = "." + file.container;
+    response.container = `.${file.container}`;
     response.handBrakeMode = false;
     response.FFmpegMode = true;
     response.reQueueAfter = true;
-      response.infoLog += "☒ File has surround audio which is NOT in ac3! \n";
+    response.infoLog += '☒ File has surround audio which is NOT in ac3! \n';
     return response;
-    } else {
-      response.infoLog += "☑ All surround audio streams are in ac3! \n";
   }
+  response.infoLog += '☑ All surround audio streams are in ac3! \n';
 
-    response.infoLog += "☑File meets conditions! \n";
+  response.infoLog += '☑File meets conditions! \n';
   return response;
-  }
-}
+};
 
 module.exports.details = details;
 module.exports.plugin = plugin;