function OnInit(initData) {
    initData.name = 'FolderBitrate';
    initData.version = '2024-11-14';
    initData.url = 'https://resource.dopus.com/t/folderbitrate-columns-with-average-bitrates-for-video-files-in-folders/53491';
    initData.desc = 'Display Average Audio and Bit Rate for folders.';
    initData.default_enable = true;
    initData.min_version = '13.0';
}

function OnAddColumns(addColData) {
    var col = addColData.AddColumn();
    col.name = 'AudioBitRateAvg';
    col.method = 'OnColumn';
    col.justify = 'right';
    col.type = 'double';
    col.multicol = true;

    var col = addColData.AddColumn();
    col.name = 'VideoBitRateAvg';
    col.method = 'OnColumn';
    col.justify = 'right';
    col.type = 'double';
    col.multicol = true;
}

function OnColumn(scriptColData) {
    var item = scriptColData.item;

    var bitrateAudio = 0;
    var bitrateVideo = 0;
    var countAudio = 0;
    var countVideo = 0;

    if (item.is_dir) {
        var folderEnum = DOpus.FSUtil().ReadDir(item);
        while (!folderEnum.complete) {
            var folderItem = folderEnum.Next();
            var meta = folderItem.metadata;
            if (meta != 'video') continue;

            var d = meta.video.mp3bitrate;
            if (typeof d == 'number') {
                bitrateAudio += d;
                countAudio++;
            }

            var d = meta.video.datarate;
            if (typeof d == 'number') {
                bitrateVideo += d;
                countVideo++;
            }
        }
        folderEnum.Close();
    } else {
        var meta = item.metadata;
        if (meta == 'video') {
            bitrateAudio = meta.audio.mp3bitrate;
            if (typeof bitrateAudio != 'number') bitrateAudio = 0;
            countAudio = 1;

            bitrateVideo = meta.video.datarate;
            if (typeof bitrateVideo != 'number') bitrateVideo = 0;
            countVideo = 1;
        }
    }

    scriptColData.columns('AudioBitRateAvg').value = (countAudio ? bitrateAudio / countAudio : 0).toFixed(1);
    scriptColData.columns('VideoBitRateAvg').value = (countVideo ? bitrateVideo / countVideo : 0).toFixed(1);
}