var cmd = DOpus.Create().Command();
var fsu = DOpus.FSUtil();
var fso = new ActiveXObject('Scripting.FileSystemObject');
var wsh = new ActiveXObject('WScript.Shell');
var exePandoc = fsu.Resolve('/programfiles\\Pandoc\\pandoc.exe'); // adjust to your system
var extensions = DOpus.Create().StringSetI('.doc', '.docx', '.txt', '.md', '.log'); // append if needed

function OnInit(initData) {
    initData.name = 'PandocWordCount';
    initData.desc = 'Count words with a bit of regex';
    initData.version = '2024-02-16';
    initData.url = 'https://resource.dopus.com/t/column-pandoc-word-count/37559';
    initData.default_enable = true;
    initData.min_version = '12.24';
}

function OnAddColumns(addColData) {
    var col = addColData.AddColumn();
    col.name = 'PWC';
    col.header = 'PWC';
    col.label = 'PWC';
    col.method = 'OnColumn';
    col.justify = 'right';
    col.autogroup = true;
    col.type = 'double';
}

function OnColumn(scriptColData) {
    var item = scriptColData.item;
    if (item.is_dir) return;
    if (!extensions.exists(item.ext)) {
        scriptColData.value = -1;
        return; // Not a wanted extension
    }

    var tmpFile = fsu.GetTempFilePath('.txt', 'pwc-');

    var cmdLine = '"' + exePandoc + '"' +
        ' --wrap=none' +
        ' --write=plain' +
        ' --output="' + tmpFile + '"' +
        ' "' + item + '"';
    // DOpus.Output(cmdLine);
    wsh.Run(cmdLine, 0, true);

    if (!fsu.Exists(tmpFile)) {
        scriptColData.value = -2;
        return; // Conversion with Pandoc was not successful
    }

    var tf = fso.OpenTextFile(tmpFile, 1);
    scriptColData.value = tf.AtEndOfStream ? -3 : tf.ReadAll().split(/\b\W+\b/).length; // return -3, if file is empty
    tf.Close();

    // cmd.RunCommand('Delete FILE="' + tmpFile + '" QUIET');
}


// https://www.verypdf.com/wordpress/201301/how-to-convert-pdf-to-text-by-command-line-34013.html

// https://www.xpdfreader.com/download.html


// Q: How can I convert PDFs to other formats using pandoc?
// A: You can’t. You can try opening the PDF in Word or Google Docs and saving in a format from which pandoc can convert directly.