Randomly select file in selected folder

Buttons/Scripts
1

I had a need to have a random file selected within a folder to execute additional commands. Figured I would share the random selection part.

// Get the active tab
var tab = DOpus.listers.lastactive.activetab;
if (!tab) {
    DOpus.Output("No active tab found.");
}

// Check if a folder is selected
var selectedItems = tab.selected;
var selectedFolder = null;

for (var e = 0; e < selectedItems.count; e++) {
    var item = selectedItems(e);
    if (item.is_dir) {
        selectedFolder = item.realpath;
        break;
    }
}

// Use selected folder or default to current tab
var srcFolder = selectedFolder || tab.path;
DOpus.Output("Using folder: " + srcFolder);

// Read files in that folder
var fsu = DOpus.FSUtil();
var enumFiles = fsu.ReadDir(srcFolder);
var files = [];

while (!enumFiles.complete) {
    var entry = enumFiles.Next();
    if (!entry.is_dir) {
        files.push(entry);
    }
}

if (files.length === 0) {
    DOpus.Output("No files found in folder.");
} else {
    var randomIndex = Math.floor(Math.random() * files.length);
    var selectedFile = files[randomIndex];

    var cmd = DOpus.Create.Command();
    cmd.SetSourceTab(tab);

    // Deselect everything first
    cmd.RunCommand('Select NONE');

    // Select the random file
    cmd.RunCommand('Select "' + selectedFile.name + '" EXACT');
}

You just need to select the folder you want the file from, run the JSscript, and it will unselect the folder, and randomly select a file within the folder.

After, run your additional commands, and then ?profit?