<?php
// 获取文件路径
$url = dr_get_file($down);
$parts = parse_url($url);
$path = $parts['path'];
$zipName = '/www/wwwroot/tmp/' . $path;

// 检查缓存是否存在且未过期
$cacheName = 'tree-' . md5($zipName);
$cacheDir =  '/www/wwwroot/cache/';
$cacheFile = $cacheDir . $cacheName;
$cacheTime = 3600; // 缓存时间，单位为秒
if (is_file($cacheFile) && (time() - filemtime($cacheFile) < $cacheTime)) {
    // 从缓存中获取 HTML 树
    $html = file_get_contents($cacheFile, false, stream_context_create(['http' => ['timeout' => 5]]));
} else {
    // 打开 zip 文件并获取文件结构
    $zip = new ZipArchive();
    $zip->open($zipName);

    // 初始化文件树结构
    $tree = [];
    for ($i = 0; $i < $zip->numFiles; $i++) {
        $filename = $zip->getNameIndex($i);
        $path = explode('/', $filename);
        $node = &$tree;
        foreach ($path as $dir) {
            $node = &$node[$dir] ?? ($node[$dir] = []);
        }
    }


    // 生成 HTML 树
    function treeToHtml($tree) {
    $html = '<ul>';
    foreach ($tree as $name => $subtree) {
        if (!empty($name)) {
            $ext = pathinfo($name, PATHINFO_EXTENSION);
            $html .= '<li';
            if (!empty($subtree)) {
                $html .= ' class="jstree-open"';
            }
            if (!empty($ext)) {  
                $html .= ' data-jstree=\'{"type":"'.$ext.'"}\'';
            }
            $html .= '>' . htmlspecialchars($name);
            if (!empty($subtree)) {
                $html .= treeToHtml($subtree);
            }
            $html .= '</li>';
        } else {
            $html .= treeToHtml($subtree);
        }
    }
    $html .= '</ul>';
    return $html;
}
    $html = treeToHtml($tree);

    // 关闭 zip 文件并保存 HTML 树到缓存文件
    $zip->close();
    file_put_contents($cacheFile, $html);
}

// 输出 HTML 树
echo '<div id="jstree-basic">' . $html . '</div>';
?>
<script>
  $(document).ready(function() {
    function generateIconObject() {
      const icons = [
        ['default', 'bx bx-folder'],
        ['doc', 'bx bxs-file-word text-primary'],
        ['docx', 'bx bxs-file-word text-primary'],
        ['xls', 'bx bxs-file-excel text-success'],
        ['xlsx', 'bx bxs-file-excel text-success'],
        ['ppt', 'bx bxs-file-powerpoint text-danger'],
        ['pptx', 'bx bxs-file-powerpoint text-danger'],
        ['pdf', 'bx bxs-file-pdf text-danger'],
        ['html', 'bx bxl-html5 text-warning'],
        ['css', 'bx bxl-css3 text-primary'],
        ['scss', 'bx bxl-sass text-primary'],
        ['js', 'bx bxl-javascript text-warning'],
        ['json', 'bx bxs-file-json text-success'],
        ['php', 'bx bxl-php text-primary'],
        ['py', 'bx bxl-python text-success'],
        ['rb', 'bx bxl-ruby text-danger'],
        ['java', 'bx bxl-java text-warning'],
        ['sql', 'bx bx-data text-danger'],
        ['xml', 'bx bx-code-alt text-primary'],
        ['csv', 'bx bxs-file-csv text-warning'],
        ['jpg', 'bx bx-image text-success'],
        ['jpeg', 'bx bx-image text-success'],
        ['png', 'bx bx-image text-success'],
        ['gif', 'bx bx-image text-success']
      ];

      const types = {};

      icons.forEach(icon => {
        types[icon[0]] = {
          'icon': icon[1]
        };
      });

      return types;
    }

    $('#jstree-basic').jstree({
      'plugins': ['types'],
      'types': generateIconObject()
    });
  });
</script>

// 初始化文件树结构
    $tree = [];
    for ($i = 0; $i < $zip->numFiles; $i++) {
        $filename = $zip->getNameIndex($i);
        $path = explode('/', $filename);
        $node = &$tree;
        foreach ($path as $dir) {
            if (!isset($node[$dir])) {
                $node[$dir] = [];
            }
            $node = &$node[$dir];
        }
    }