header={
  "chef": "BeatRig",
  "recipe_version": "1.8",
  "title": "Album Normalisation",
  "description": "Takes multiple audio files, adjusts the level of the loudest file to -14LUFS and the other files accordingly.",
  "spice": "BQ==:G+Hy36kJcnQQYYavb/JV2Il6eCYr6h4hRJHCF9rRbhX5BcazL6cuTgUMdz0xA50VWA5PmmV0Q7aWkiUtNFtbk991l+t0e8IBXMReMIT1GNjnZZDv7n2YRAo0xcSQbY0ixjG6LLH4wGKnspKAoA/v69iLn6N2IH0XzIZwTGdHSo4=",
  "flavour": "ApuUrD/JVx9F/E1RWLrscsyN52N0sd1G0KCRGFOyrCw16WuBntC5w62y+7i3xKvKsBOSlvq16q6U3Sjry1oZgTaEXCqXEO7GEDEhF5f/JSWqTyFre77zNA2HOCH18/Yn5NfPNsivMDQtGVjmAvds1CBSO/SXiRRmuRRJPRXtURM=",
  "time": 1736284610,
  "palette": "Clean Slate",
  "dependencies": "",
  "tags": "audio, loudness, music",
  "type": "default",
  "os": "windows,macOS",
  "functions": "main",
  "core_version": "0.7.2",
  "uuid": "006030edd82c46bc8b37d17b2c475af4",
  "magnetron_version": "1.0.333",
  "instructions": "Drop file(s) here"
};


// =============================================================================
var filecount = 0;


// =============================================================================
function main()
{
    // ------------------------------------
    // LOUDNES SPECS
    var album_max_lufs  = -99.;
    var album_max_tp    = -99.;
    var adjust          = 0.;

    // ------------------------------------
    setMainMessage("analysing");
    setProgress(0);

    // ------------------------------------
    // GET ALL FILES FROM THE APP
    var files = getFiles();

    // ------------------------------------
    files = validateInputFile(files);
    filecount = files.length;


    // CHECK IF THERE IS AT LEAST ONE FILE
    if(files.length < 1){
        abort("Add files before running the recipe.");
        }

    // ------------------------------------
    // ANALYSE LOUDNESS OF ALL AUDIO FILES INDIVIDUALLY
    var args = {
        "AdjustTargetType": "LUFS",
        "AdjustTargetLevel":  0.
        };

    // ------------------------------------
    for (i=0;i<files.length;i++)
    {
        setMainMessage("Analysing file "+i+"/"+files.length);

        // FILE PROPERTIES
        var f = files[i];


        // FILE LOUDNESS AND PEAK
        var fileSpecs = levelFileAnalyse( f.path, args);

        // KEEP TRACK OF MAX ALBUM LOUDNESS AND PEAK
        album_max_lufs = Math.max(fileSpecs.LUFS, album_max_lufs );
        album_max_tp = Math.max(fileSpecs.TruePeak, album_max_tp );

        // SET STATUS
        files[i]['file_icon_color'] = "FFbbbbbb";
        files[i]['file_icon'] = "Search";
        files[i]['file_status'] = toFixed(fileSpecs.LUFS,1)+"LUFS";
        files[i]['lufs'] = fileSpecs.LUFS;

        // UPDATE LIST
        setFiles(files);
    }

    // ------------------------------------
    // CALCULATE ADJUST LEVEL, TARGET THE LOUDEST FILE AT -14LUFS
    adjust = -14. - album_max_lufs;

    // ------------------------------------
    // WARN WHEN LOUDNESS IS OUT OF RANGE
    if(album_max_lufs == 0)
    {
        abort("One or more files could not be analysed.");
    }

    // ------------------------------------
    // PROCESS THE FILES
    setProgress(50);
    setMainMessage("processing");

    // ------------------------------------
    // ASK WHERE TO EXPORT
    var export_folder = openFolderDialog("Select export folder", folders.home);
    if( export_folder == "" ) { return; }

    // ------------------------------------
    var args = {
        "AdjustLevel_NoLimit" : adjust,
        "NeedLimiting" : ( album_max_tp + adjust > -1 ? true : false ),
        "LimitThresholddB" : -1.,
        };

    // ------------------------------------
    // PROCESS THE FILES
    for (i=0;i<files.length;i++)
    {

        setMainMessage("Processing file "+i+"/"+files.length);

        // OUTPUT FILE
        var path = getPathInfo( files[i].path );
        files[i].outfile = export_folder+gvar.pss+path.filename;

        // PROCESS
        levelFileProcess( files[i].path, files[i].outfile, args );
        setProgress( i/files.length*50+50 );


        // SET STATUS
        files[i]['file_icon'] = "check";
        files[i]['file_icon_color'] = "FF00aa00";
        files[i]['file_status'] = 
            toFixed(files[i]['lufs']+14+adjust,1)
            +"Lu"
            +(album_max_lufs == files[i]['lufs'] ? " (ref. file)": "");

        // UPDATE LIST
        setFiles(files);
    }

    // ------------------------------------
    // ALL DONE
    setProgress(100);
    setMainMessage(" ");

    // ------------------------------------

}

// =============================================================================
function validateInputFile(files)
{
    var valid = [];

    for (i=0;i<files.length;i++)
    {
        var path = getPathInfo( files[i].path );
        if( path.ext == "wav" || path.ext == "aif" || path.ext == "aiff" )
        {
            valid.push({
                index: files[i].index,
                path: files[i].path,
                file_icon: 'square',
                file_icon_color: 'FFdddddd',
                file_status: '',
                file_tooltip: '',
                file_show_tooltip: false,
                });
        }
    }

    // UPDATE FILES LIST
    return valid;
}



// =============================================================================
// CALLBACK LOUDNESS ANALYSING
// this function gets called when busy LevelFileAnalyse. progress 0. to 1.
function LevelFileAnalyse_Progress(file, progress)
{
    setProgress((progress/filecount + i/filecount ) * 50);
}

// =============================================================================
// CALLBACK LOUDNESS PROCESSING 
// this function gets called when busy LevelFileProcess. progress 0. to 1.
function LevelFileProcess_Progress(file, progress)
{
    var files = getFiles();
    setProgress(50 +(progress/filecount + i/filecount ) * 50);
}