header={
  "chef": "BeatRig",
  "recipe_version": "1.26",
  "title": "Convert To FLAC",
  "description": "Convert almost any file to FLAC",
  "spice": "BQ==:G+Hy36kJcnQQYYavb/JV2Il6eCYr6h4hRJHCF9rRbhX5BcazL6cuTgUMdz0xA50VWA5PmmV0Q7aWkiUtNFtbk991l+t0e8IBXMReMIT1GNjnZZDv7n2YRAo0xcSQbY0ixjG6LLH4wGKnspKAoA/v69iLn6N2IH0XzIZwTGdHSo4=",
  "flavour": "9LKrvS0JIBDzcokX8YjD8qL1Z/vmUPRQGB5ZgnAl+V1T/TsZShcAlLzWiamWC0JHVWirVcM/DBRXRm/RwCXqdlzGofNiDsUnboG+dQqJPsNLTp2VLFI6ryO/wgGMb26Sc/TXqPeG9a0gkdsr/wEOCGAc4vTbM4Np6ix58YnEL1s=",
  "time": 1677074290,
  "magnetron_version": "1.0.218",
  "tags": "audio",
  "core_version": "0.5.1",
  "palette": "Clean Slate",
  "dependencies": "ffprobe,ffmpeg",
  "type": "default",
  "os": "windows,macOS",
  "functions": "main",
  "uuid": "67a5626be28f42e9822814d348a5c8db",
  "instructions": "Drop file(s) here"
};


// =============================================================================
// GLOBALS
// =============================================================================
    var duration = 0;


// =============================================================================
// MAIN
// =============================================================================
    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");

     
        // -----------------------------
        // START PROGRESS
        setProgress(101);

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

        // -----------------------------
        if( files.length == 0)
            abort("Add some files first!");
    
        // -----------------------------
        // CLEAN UP THE FILE LIST
        for (i=0;i<files.length;i++)
        {
            files[i]['file_icon'] = "square";
            files[i]['file_icon_color'] = "FFdddddd";
            files[i]['file_status'] = "";
            files[i]["file_tooltip"] = "";
            files[i]['group'] = "";
        }
        setFiles(files);


        // -----------------------------
        // START PATH
        var startpath = getPathInfo(files[0].path);
        var r = openDialog(startpath.folder);


        // IF CANCELLED
        if(r.cancel == 1)
            break;


        // ------------------------------------
        //
        var samplerate = (r.samplerate != "source" ? parseInt(parseFloat(r.samplerate)*1000) : false);
        var bitrate = (r.bitrate != "source" ? parseInt( r.bitrate) : false) ;
    
        // ------------------------------------
        // ANALYSE LOUDNESS OF ALL AUDIO FILES INDIVIDUALLY
        for (i=0;i<files.length;i++)
        {

            // CHECK IF USER CANCELLED
            if( isCanceled() ) 
                abort("Processing Cancelled");
    
            // PROGRESS AND MAIN MESSAGE
            setMainMessage("Processing file "+i+"/"+files.length);
            setProgress( 101 );

    
            // UPDATE ICON IN THE FILE LIST
            files[i]['file_icon'] = "CaretSquareORight";
            setFiles(files);
    
            // -----------------------------
            // THIS FILE
            var path = getPathInfo(files[i].path);
            var outfile = ( r.path_toggle === true ? path.folder : r.custompath )+gvar.PathSeparatorString+path.basename+'.flac';

            // -----------------------------
            if(fileExists(outfile))
            {
                files[i]["file_icon"] = "CheckSquare";
                files[i]["file_icon_color"] = "FFFF0000";
                files[i]["file_status"] = "file Exists";                
                setFiles(files);
                continue;
            }
      
            // -----------------------------
            // GET DURATION
            var ffprobe = cmd("ffprobe", [
                '-v','error',
                '-select_streams','a',
                '-show_entries','stream=codec_type :format=duration',
                '-of','default=noprint_wrappers=1',
                '-i',files[i].path
                ]);
    
            // RETURN VALUES
            var duration = parseFloat(searchRegEx(ffprobe, "(?:duration=)(.*?)(?=[\n\r])", "o", 1)[0]);
            var streamCount = searchRegEx(ffprobe, "(?:codec_type=audio)(.*?)(?=[\n\r])", "o", 1);
            var hasAudio = parseInt(streamCount.length) === 1;

            // CHECK VALID DURATION
            if(!hasAudio || duration == 0.){
                files[i]["file_icon"] = "CheckSquare";
                files[i]["file_icon_color"] = "FFFF0000";
                files[i]["file_status"] = "Cant Read the File";                
                setFiles(files);
                continue;
            }

            // DURATION IS VALID
            else
            {

                // -----------------------------
                // OPTIONS
                var args = [];
                args.push("-i");
                args.push(path.path);
                args.push("-c:a");
                args.push("flac");
                args.push("-compression_level");
                args.push(parseInt(r.compressionlevel));

                if(samplerate)
                {
                    args.push("-resampler");
                    args.push("soxr");
                    args.push("-ar");
                    args.push(parseInt(samplerate));
                }

                if(bitrate)
                {
                    args.push("-sample_fmt");
                    args.push("s"+parseInt(bitrate));
                }

                args.push(outfile);
                args.push("-y");

                // FFMPEG CALL
                var ffmpeg = cmd("ffmpeg", args);
    
                // CHECK FFMPEG OUTPUT FOR ERRORS
                var err = searchRegEx(ffmpeg, "error", "i", 0);

            }

            if(err.length > 0)
            {
                files[i]["file_icon"] = "CheckSquare";
                files[i]["file_icon_color"] = "FFFF0000";
                files[i]["file_status"] = "Conversion failed!";
    
                // REMOVE FILE IF FAILED
                if(fileExists(outfile)) deleteFile(outfile);
            }
            else
            {
                files[i]["file_icon"] = "CheckSquare";
                files[i]["file_icon_color"] = "FF008800";
                files[i]["file_status"] = "Done";
            }
    
            setFiles(files);
        }
    
        // ALL DONE
        setFiles(files);
        setProgress(100);
        setMainMessage(" ");
    }
    



// =============================================================================
// CMD CALLBACK
// =============================================================================
    function cmd_callback(cmd_name, cmd_output)
    {

        // FOR AUDIO GET THE DURATION
        if(cmd_name == "ffmpeg" && cmd_output.length > 0 && duration > 0.)
        {
            var progress = searchRegEx(cmd_output , "(?:time=)(.*?)(?:\ bitrate=)", "i", 1);
            progress = progress[progress.length-1].split(':');
            progress = (parseFloat(progress[0]) * 60. * 60.) + (parseFloat(progress[1])*60.) + parseFloat(progress[2]);
            Math.round( parseFloat(progress)/ duration  * 100. );
            setProgress( progress );
        }
    }









// =============================================================================
// OPEN DIALOG
// =============================================================================
    function openDialog(startfolder)
    {

        var form = {

        // PATH
        "path_label" : {
            "type" : "text",
            "label" : "source folder",
            "just" : "l",
            "bounds" : { "x": 20, "w" : 160, }, 
            },

        "path_toggle": { 
            "type": "togglebox", 
            "bounds" : { "y": -1, "x": 180, "w" : 25, }, 
            "label" : "", 
            "toggle" : true
            }, 

        "custompath_label" : {
            "type" : "text",
            "label" : "folder",
            "just" : "l",
            "bounds" : { "x": 20, "w" : 160, }, 
            "visible": false, 
            },

        "custompath" : {
            "type" : "fileselect",
            "path" : startfolder,
            "editable" : false,
            "dir" : true,
            "saving" : true,
            "label" : "empty",
            "bounds" : { "y": -1, "x": 180, "w" : 340, }, 
            "visible": false, 
            },


        // MODE
        "bitrate_label" : {
            "type" : "text",
            "label" : "bitrate",
            "just" : "l",
            "bounds" : { "y": 220, "x": 20, "w" : 160, }, 
            },

        "bitrate" : {
            "type"      : "combobox",
            "default"   : "source",
            "items"     : "source,32,24,20,16,12,8",
            "label"     : "",
            "bounds"    : { "y": 220, "x" : 180, "w" : 340  },
            "visible"   : true,
            },

        // SAMPLE RATE
        "samplerate" : {
            "type"      : "combobox",
            "default"   : "source",
            "items"     : "source,192kHz,176.4kHz,96kHz,88.2kHz,48kHz,44.1kHz,32kHz,22.05kHz",
            "label"     : " ",
            "bounds"    : {"y": 260,  "x" : 180, "w" : 340  }, 
            },

        "samplerate_label" : {
            "type"      : "text",
            "label"     : "samplerate",
            "just" : "l",
            "bounds" : { "y": 260, "x" : 20, "w" : 120  }, 
            },

        // COMPRESSION
        "compression_label" : {
            "type"      : "text",
            "label"     : "compression",
            "just" : "l",
            "bounds" : { "x" : 20, "w" : 120  }, 
            },

        "compression" : {
            "type"      : "combobox",
            "default"   : "5",
            "items"     : "0,1,2,3,4,5,6,7,8,9,10,11,12",
            "label"     : " ",
            "bounds"    : {"y": -1,  "x" : 180, "w" : 340  }, 
            },


        // BUTTONS
        "spacer1" : {
            "type"      : "text",
            "label"     : " ",
            "just"      : "r",
            "bounds"    : { "x": 120, "w" : 200, "h" : 100  }, 
            },

        "cancel" : {
            "type"      : "button",
            "label"     : "cancel",
            "bounds"    : { "x": 310, "w" : 100 }, 
            "returns"   : 0
            },

        "go" : {
            "type"      : "button",
            "label"     : "go",
            "bounds"    : { "y": -1, "x": 420, "w" : 100, }, 
            "returns"   : 1
            }
        };

        return dialog(header.title, "", "", form);
    }






// =============================================================================
function dialog_callback(props)
{    
    if (props["name"] == "path_toggle")
        var r = dialog({
            "custompath" : { "visible" : !props["toggle"] },
            "custompath_label" : { "visible" : !props["toggle"] } 
            });

}