/* eslint no-plusplus: ["error", { "allowForLoopAfterthoughts": true }] */
const details = () => ({
  id: 'Tdarr_Plugin_Alex_DownmixStereo',
  Stage: 'Pre-processing',
  Name: 'Alex-DownmixStereo',
  Type: 'Audio',
  Operation: 'Transcode',
  Description: 'Todos los streams de audio que no sean 2.0, les hago downmix \n\n',
  Version: '2.4',
  Tags: 'pre-processing,ffmpeg,audio only,configurable',
  Inputs: [],
});

// eslint-disable-next-line no-unused-vars
const plugin = (file, librarySettings, inputs, otherArguments) => {
  const lib = require('../methods/lib')();
  // eslint-disable-next-line no-unused-vars,no-param-reassign
  inputs = lib.loadDefaultValues(inputs, details);
  const response = {
    processFile: false,
    container: `.${file.container}`,
    handBrakeMode: false,
    FFmpegMode: true,
    reQueueAfter: true,
    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 audioIdx = 0;
  let convert = false;
  let already_converted = false;
  let only_convert_dts = false;
  
  //if (file.video_resolution.includes("1080p")){
  //  only_convert_dts = true;
  //}
  only_convert_dts = true;
  // Go through each stream in the file.
  if ("comment" in file.ffProbeData.format.tags){
    if (file.ffProbeData.format.tags.comment.includes("2.0 tdarr")){
      already_converted = true;
    }
  }
  if ("COMMENT" in file.ffProbeData.format.tags){
    if (file.ffProbeData.format.tags.COMMENT.includes("2.0 tdarr")){
      already_converted = true;
    }
  }

  // for (let i = 0; i < file.ffProbeData.streams.length; i++) {
  //   try {
  //     // Go through all audio streams and check if 2 is already converted.
  //     if (file.ffProbeData.streams[i].codec_type.toLowerCase() === 'audio') {
  //       if (file.ffProbeData.streams[i].channels === 2 && file.ffProbeData.streams[i].tags.title.includes("2.0 tdarr")) {
  //         already_converted = true;
  //       }
  //     }
  //   } catch (err) {
  //     // Error
  //   }
  // }

  // Go through each stream in the file.
  for (let i = 0; i < file.ffProbeData.streams.length; i++) {
    // Check if stream is audio.
    if (file.ffProbeData.streams[i].codec_type.toLowerCase() === 'audio') {
        if (only_convert_dts === true){
            //si la pista no es dts: continue;
            if (!file.ffProbeData.streams[i].codec_long_name.includes("DCA")){
                continue;
            }
        }
        if (file.ffProbeData.streams[i].channels !== 2) {
            //ffmpegCommandInsert += `-map 0:${i} -c:a:${audioIdx} libmp3lame -q:a 2 -ac 2 -metadata:s:a:${audioIdx} title="2.0 tdarr" `;
            ffmpegCommandInsert += `-map 0:${i} -c:a:${audioIdx} libfdk_aac -vbr 5 -af "volume=1.66,pan=stereo|c0=0.5*c2+0.707*c0+0.707*c4+0.5*c3|c1=0.5*c2+0.707*c1+0.707*c5+0.5*c3" -metadata:s:a:${audioIdx} title="2.0 tdarr" `;
            //ffmpegCommandInsert += `-map 0:${i} -c:a:${audioIdx} aac -ac 2 -metadata:s:a:${audioIdx} title="2.0 tdarr" `;
            response.infoLog += `Creating 2 channel from audio stream ${audioIdx}. \n`;
            convert = true;
        }
        audioIdx += 1;
    }
  }

  // Convert file if convert variable is set to true. 
  if (convert === false || already_converted === true) {
    response.infoLog += '☑File contains all required audio formats. \n';
    response.processFile = false;
  } else {
    response.processFile = true;
    response.preset = `, -map 0 -c:v copy -c:a copy ${ffmpegCommandInsert} `
    + '-strict -2 -c:s copy -metadata comment="2.0 tdarr" -max_muxing_queue_size 9999 ';
  }
  return response;
};
module.exports.details = details;
module.exports.plugin = plugin;