module.exports.details = function details() {

    return {
        id: "Tdarr_Plugin_c0r1_SetDefaultAudioStream",
        Stage: "Pre-processing",
        Name: "Set Default Audio Stream",
        Type: "Audio",
        Operation: "Transcode",
        Description: `This plugin will set an audio channel (2.0, 5.1, 7.1) to default and remove default from all other audio streams \n\n`,
        Version: "0.1.0a",
        Link: "",
        Tags:"audio only",

        Inputs: [
            {
                name: 'channels',
                tooltip: `Desired audio channel number.

      \\nExample:\\n

      2

      \\nExample:\\n

      6

      \\nExample:\\n

      8`
            },
        ]

    }

}

module.exports.plugin = function plugin(file, librarySettings, inputs) {
    var response = {
        processFile: false,
        preset: '',
        container: '.' + file.container,
        handBrakeMode: false,
        FFmpegMode: true,
        infoLog: '',
    }

    var shouldProcess = false
    var defaultAudioStreams = 0
    var matchingAudioStreams = 0
    var defaultSet = false
    var ffmpegCommandInsert = ''


    // Check if default audio stream matches user's channel selection
    for (var i = 0; i < file.ffProbeData.streams.length; i++) {
        if(file.ffProbeData.streams[i].codec_type.toLowerCase() === "audio" &&
            file.ffProbeData.streams[i].channels == inputs.channels)
        {
            matchingAudioStreams++
            if(file.ffProbeData.streams[i].disposition.default === 1){
                defaultAudioStreams++;
            }
        }
    }

    // build command
    for (var i = 0; i < file.ffProbeData.streams.length; i++) {
        if(file.ffProbeData.streams[i].codec_type.toLowerCase() === "audio")
        {
            if(file.ffProbeData.streams[i].channels == inputs.channels)
            {
                if(!defaultSet){
                    ffmpegCommandInsert += `-disposition:${i} default `
                    defaultSet = true
                } else {
                    ffmpegCommandInsert += `-disposition:${i} 0 `
                }
            } else {
                ffmpegCommandInsert += `-disposition:${i} 0 `
            }
        }
    }

    // Only process when there is a matching stream and
    // when there is either no default or more than 1 default stream set
    if(matchingAudioStreams >= 1 && defaultAudioStreams !== 1) {
        shouldProcess = true;
        response.infoLog += "☒ Matching audio stream is not set to default. \n"
    }

    if (shouldProcess) {
        response.processFile = true;
        response.reQueueAfter = true;
        response.preset = `,-map 0 -c copy ${ffmpegCommandInsert}`;
        response.infoLog += "☒ Setting " + inputs.channels + " channel matching audio stream to default. Remove default from all other audio streams \n"
    } else {
        if(matchingAudioStreams < 1){
            response.infoLog += "☑ No " + inputs.channels + " channel audio stream exists. \n "
        } else if (defaultAudioStreams === 1){
            response.infoLog += "☑ Default " + inputs.channels + " channel audio stream already exists. \n "
        } else {
            response.infoLog += "☑ Unexpected: Did not process \n "
        }

        response.processFile = false;
    }
    return response

}