header={
  "chef": "BeatRig",
  "dependencies": "ffmpeg",
  "title": "Audio File Gain",
  "description": "Adjust all audio files with a custom gain level",
  "instructions": "",
  "recipe_version": "63",
  "tags": "",
  "type": "default",
  "os": "windows,macOS",
  "palette": "Clean Slate",
  "spice": "BQ==:G+Hy36kJcnQQYYavb/JV2Il6eCYr6h4hRJHCF9rRbhX5BcazL6cuTgUMdz0xA50VWA5PmmV0Q7aWkiUtNFtbk991l+t0e8IBXMReMIT1GNjnZZDv7n2YRAo0xcSQbY0ixjG6LLH4wGKnspKAoA/v69iLn6N2IH0XzIZwTGdHSo4=",
  "flavour": "JpXgedQRlVQWtDeYBiquqijeTD7YGw9PGamah31rGaWcQhGvBCQqTHLtUS5wiD/2Rpmz0AwuzmR87l/bq/k+FTf0mnQfeTI/RNavorvzTsWNvxYyOMMeChzTp7DZGu8o9BFG3tAX6WQ9UipHP5LCHATefSsjo3ghllWsDOrBp2I=",
  "time": 1736284365,
  "core_version": "0.7.2",
  "magnetron_version": "1.0.333",
  "functions": "main",
  "uuid": "936a08c09d4d4b82940734bedaa7712e"
};


// =============================================================================
function main()
{

    // -----------------------------
    // CHECK IF FFMPEG AND FFPROBE ARE AVAILABLE
    if(getAllowedApps("ffmpeg") == '' ) abort("FFMPEG is not available");
    if(getAllowedApps("ffprobe") == '' ) abort("FFMPEG is not available");

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

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

    // ------------------------------------
    // CHEK IF FILES ARE VALID
    files = validateFiles(files);

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

    // ------------------------------------
    // PREPARE DIALOG
    var opts = {

        "gain": { 
            "type": "slider", 
            "style": "slider_h",
            "visible": true, 
            "range" : { 
                "min": -99, 
                "max" : 99, 
                "interval" : 0.1, 
                "decimals" : 1 
            }, 
            "bounds" : {
                "w" : 300,
                "x" : 100,
                "y" : 100,
            }, 
            "value": 0. 
        }, 

        "label" : {
            "type" : "text",
            "label" : "dB",
            "just" : "r",
            "bounds" : { 
                "x": 340, 
                "y" : -1, 
                "w" : 100, 
            }, 
        },

        "label" : {
            "type" : "text",
            "label" : " ",
            "just" : "r",
            "bounds" : { 
                "x": 1, 
                "y" : 400, 
                "w" : 1, 
            }, 
        },

        "confirm" : { "type" : "button", "label" : "ok", "returns" : 1 }
        };

    var r = dialog("Adjust all files with the following gain", "", "i", opts );

    // CANCELLED
    if ( r.confirm != 1 ) {  return; }

    // ------------------------------------
    let adjust = Math.round(parseFloat(r.gain) * 100) / 100;
    if ( adjust == 0. ) { abort("No gain applied"); }

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

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

        // INPUT FILE
        let path = files[i].path;
        let pathArr = getPathInfo( path );
        let idx = files[i].index;

        // 
        setFileIcon(path, idx, "Play")
        setFileIconColor(path, idx, "FF999999")
        setFileStatus(path, idx, '...')

        // INPUT FILE
        let infile = pathArr.path;

        // OUTPUT FOLDER
        let outfolder = pathArr.folder+'/gained/';
        if( !fileExists(outfolder) ) makeFolder(outfolder );

        // OUTPUT FILE
        let outfile = outfolder+pathArr.filename;

        // FFMPEG
        cmd('ffmpeg',[
            '-i',
            infile,
            '-filter:a',
            'volume='+adjust+'dB',
            outfile,
            '-y'
            ]);

        // SET STATUS
        setFileIcon(path, idx, "Check")
        setFileIconColor(path, idx, "FF00aa00")
        setFileStatus(path, idx, 'Done')
    }

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

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

}

// =============================================================================
function validateFiles(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;
}

// =============================================================================
// FFMPEG/FFPROBE CALLBACK
function cmd_callback(cmd_name, cmd_output)
{
    setProgress(101);
    return { "terminate": isCanceled(), "input": ""};
}

// =============================================================================
// DIALOG CALLBACK
function dialog_callback(props)
{    
    return props;
}