<?php

function &main(&$aParams) {

    // Extensions to exclude
    $aExclude = [".shtml", ".html", ".ini", ".php"];

    // Build directory path
    $sDir = $_SERVER['DOCUMENT_ROOT'] . $_REQUEST['dir'];

    if (!is_dir($sDir)) {
        return "";
    }

    $entries = scandir($sDir);
    if (!is_array($entries)) {
        return "";
    }

    $aReturn = [];

    foreach ($entries as $entry) {

        // Skip dot entries
        if ($entry === "." || $entry === "..") continue;

        $full = $sDir . "/" . $entry;

        // Only process files
        if (!is_file($full)) continue;

        // Extract extension
        $ext = strrchr($entry, '.');   // includes the dot, e.g. ".txt"

        // Skip excluded extensions
        if ($ext && in_array($ext, $aExclude)) continue;

        // Extract base safely
        $base = $ext ? substr($entry, 0, -strlen($ext)) : $entry;

        // Gather file stats once
        $bytes    = filesize($full);
        $created  = filemtime($full);
        $modified = filectime($full);

        // Build return row
        $aReturn[] = [
            "type"     => "file",
            "base"     => $base,
            "ext"      => $ext ?: "",
            "bytes"    => $bytes,
            "size"     => formatSize($bytes),
            "age"      => $created,
            "created"  => date("Y.m.d", $created),
            "modified" => date("Y.m.d", $modified)
        ];
    }

    return $aReturn;
}

function formatSize($bytes) {
    if ($bytes < 1024)      return $bytes . "bytes";
    if ($bytes < 1048576)  return round($bytes / 1024, 1) . "kb";
    return round($bytes / 1048576, 1) . "mb";
}

?>