<?php
// Konfigurasi direktori root
$root_dir = __DIR__; // Direktori saat ini
$current_dir = isset($_GET['dir']) ? $_GET['dir'] : $root_dir;

// Validasi keamanan: cegah akses ke luar root
$real_root = realpath($root_dir);
$real_current = realpath($current_dir);

if ($real_current === false || strpos($real_current, $real_root) !== 0) {
    $current_dir = $root_dir;
    $real_current = realpath($root_dir);
}

// --- FUNGSI ---

// Format ukuran file
function formatSize($bytes) {
    if ($bytes == 0) return '0 B';
    $k = 1024;
    $sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
    $i = floor(log($bytes) / log($k));
    return round($bytes / pow($k, $i), 2) . ' ' . $sizes[$i];
}

// Hapus direktori rekursif
function deleteDirectory($dir) {
    if (!file_exists($dir)) return true;
    if (!is_dir($dir)) return unlink($dir);
    foreach (scandir($dir) as $item) {
        if ($item == '.' || $item == '..') continue;
        if (!deleteDirectory($dir . DIRECTORY_SEPARATOR . $item)) return false;
    }
    return rmdir($dir);
}

// Copy file/directory
function copyItem($source, $destination) {
    if (is_dir($source)) {
        if (!file_exists($destination)) {
            mkdir($destination, 0777, true);
        }
        $items = scandir($source);
        foreach ($items as $item) {
            if ($item == '.' || $item == '..') continue;
            if (!copyItem($source . DIRECTORY_SEPARATOR . $item, $destination . DIRECTORY_SEPARATOR . $item)) {
                return false;
            }
        }
        return true;
    } else {
        return copy($source, $destination);
    }
}

// Move file/directory
function moveItem($source, $destination) {
    return rename($source, $destination);
}

// --- ACTION HANDLER ---

$msg = '';
$msg_type = 'success';

// 1. Upload File
if (isset($_POST['upload']) && isset($_FILES['file'])) {
    $target = $current_dir . DIRECTORY_SEPARATOR . basename($_FILES['file']['name']);
    if (file_exists($target)) {
        $msg = "File sudah ada!";
        $msg_type = 'error';
    } elseif (move_uploaded_file($_FILES['file']['tmp_name'], $target)) {
        $msg = "File berhasil diupload!";
    } else {
        $msg = "Gagal upload file!";
        $msg_type = 'error';
    }
}

// 2. Buat Folder
if (isset($_POST['create_folder'])) {
    $folder_name = trim($_POST['folder_name']);
    if (!empty($folder_name)) {
        $new_folder = $current_dir . DIRECTORY_SEPARATOR . $folder_name;
        if (!file_exists($new_folder)) {
            if (mkdir($new_folder, 0777, true)) {
                $msg = "Folder berhasil dibuat!";
            } else {
                $msg = "Gagal membuat folder!";
                $msg_type = 'error';
            }
        } else {
            $msg = "Folder sudah ada!";
            $msg_type = 'error';
        }
    }
}

// 3. Hapus File/Folder
if (isset($_GET['delete'])) {
    $target = $current_dir . DIRECTORY_SEPARATOR . basename($_GET['delete']);
    if (file_exists($target)) {
        // Cegah penghapusan file manager itu sendiri
        if (basename($target) == 'filemanager.php') {
            $msg = "Tidak bisa menghapus file manager itu sendiri!";
            $msg_type = 'error';
        } else {
            if (is_dir($target)) {
                deleteDirectory($target);
            } else {
                unlink($target);
            }
            $msg = "Berhasil dihapus!";
        }
    } else {
        $msg = "File/Folder tidak ditemukan!";
        $msg_type = 'error';
    }
}

// 4. Rename File/Folder
if (isset($_POST['rename'])) {
    $old_name = $current_dir . DIRECTORY_SEPARATOR . basename($_POST['old_name']);
    $new_name = $current_dir . DIRECTORY_SEPARATOR . basename($_POST['new_name']);
    if (file_exists($old_name) && !file_exists($new_name)) {
        if (rename($old_name, $new_name)) {
            $msg = "Berhasil direname!";
        } else {
            $msg = "Gagal rename!";
            $msg_type = 'error';
        }
    } else {
        $msg = "File tidak ditemukan atau nama sudah ada!";
        $msg_type = 'error';
    }
}

// 5. Edit File (simpan konten)
if (isset($_POST['save_content'])) {
    $file_path = $current_dir . DIRECTORY_SEPARATOR . basename($_POST['edit_file']);
    if (file_exists($file_path) && is_file($file_path)) {
        // Cegah edit file manager itu sendiri
        if (basename($file_path) == 'filemanager.php') {
            $msg = "Tidak bisa mengedit file manager itu sendiri!";
            $msg_type = 'error';
        } elseif (file_put_contents($file_path, $_POST['content']) !== false) {
            $msg = "File berhasil disimpan!";
        } else {
            $msg = "Gagal menyimpan file!";
            $msg_type = 'error';
        }
    }
}

// 6. Download File
if (isset($_GET['download'])) {
    $file_path = $current_dir . DIRECTORY_SEPARATOR . basename($_GET['download']);
    if (file_exists($file_path) && is_file($file_path)) {
        header('Content-Type: application/octet-stream');
        header('Content-Disposition: attachment; filename="' . basename($file_path) . '"');
        header('Content-Length: ' . filesize($file_path));
        readfile($file_path);
        exit;
    }
}

// 7. Copy/Move File
if (isset($_POST['copy_move'])) {
    $source = $current_dir . DIRECTORY_SEPARATOR . basename($_POST['source_item']);
    $dest_dir = $_POST['destination_dir'];
    $dest_full = $dest_dir . DIRECTORY_SEPARATOR . basename($_POST['source_item']);
    $action = $_POST['action_type'];
    
    if (file_exists($source) && is_dir($dest_dir)) {
        if ($action == 'copy') {
            if (copyItem($source, $dest_full)) {
                $msg = "Berhasil dicopy!";
            } else {
                $msg = "Gagal copy!";
                $msg_type = 'error';
            }
        } elseif ($action == 'move') {
            if (moveItem($source, $dest_full)) {
                $msg = "Berhasil dipindahkan!";
            } else {
                $msg = "Gagal pindahkan!";
                $msg_type = 'error';
            }
        }
    } else {
        $msg = "Source atau destination tidak valid!";
        $msg_type = 'error';
    }
}

// 8. Zip Download (multiple files)
if (isset($_POST['zip_download']) && isset($_POST['selected_items'])) {
    $selected = $_POST['selected_items'];
    if (!empty($selected)) {
        $zip = new ZipArchive();
        $zip_name = 'files_' . date('Y-m-d_H-i-s') . '.zip';
        $zip_path = sys_get_temp_dir() . '/' . $zip_name;
        
        if ($zip->open($zip_path, ZipArchive::CREATE) === TRUE) {
            foreach ($selected as $item) {
                $full_path = $current_dir . DIRECTORY_SEPARATOR . $item;
                if (file_exists($full_path)) {
                    if (is_dir($full_path)) {
                        // Add directory recursively
                        $files = new RecursiveIteratorIterator(
                            new RecursiveDirectoryIterator($full_path),
                            RecursiveIteratorIterator::LEAVES_ONLY
                        );
                        foreach ($files as $name => $file) {
                            if (!$file->isDir()) {
                                $filePath = $file->getRealPath();
                                $relativePath = $item . '/' . substr($filePath, strlen($full_path) + 1);
                                $zip->addFile($filePath, $relativePath);
                            }
                        }
                    } else {
                        $zip->addFile($full_path, $item);
                    }
                }
            }
            $zip->close();
            
            // Download zip
            header('Content-Type: application/zip');
            header('Content-Disposition: attachment; filename="' . $zip_name . '"');
            header('Content-Length: ' . filesize($zip_path));
            readfile($zip_path);
            unlink($zip_path); // Delete temp file
            exit;
        }
    }
}

// --- NAVIGASI ---

// Tombol Back
$parent_dir = dirname($current_dir);
if (strpos(realpath($parent_dir), $real_root) === 0 && $current_dir != $root_dir) {
    $back_link = "?dir=" . urlencode($parent_dir);
} else {
    $back_link = null;
}

// Daftar isi direktori
$items = scandir($current_dir);
$files = [];
$folders = [];

foreach ($items as $item) {
    if ($item == '.' || $item == '..') continue;
    $full_path = $current_dir . DIRECTORY_SEPARATOR . $item;
    if (is_dir($full_path)) {
        $folders[] = $item;
    } else {
        $files[] = $item;
    }
}

sort($folders);
sort($files);
$all_items = array_merge($folders, $files);

// --- VARIABLE UNTUK EDIT ---
$edit_content = '';
$edit_file = '';
if (isset($_GET['edit'])) {
    $edit_file = basename($_GET['edit']);
    $file_path = $current_dir . DIRECTORY_SEPARATOR . $edit_file;
    if (file_exists($file_path) && is_file($file_path) && is_readable($file_path)) {
        $edit_content = file_get_contents($file_path);
        // Cegah edit file PHP ini sendiri
        if (basename($file_path) == 'filemanager.php') {
            $edit_content = "⚠️ Tidak bisa mengedit file manager itu sendiri!";
        }
    }
}

// --- GET DIRECTORY LIST FOR COPY/MOVE ---
function getDirectories($dir, $root) {
    $result = [];
    if (is_dir($dir)) {
        $items = scandir($dir);
        foreach ($items as $item) {
            if ($item == '.' || $item == '..') continue;
            $full = $dir . DIRECTORY_SEPARATOR . $item;
            if (is_dir($full) && strpos(realpath($full), $root) === 0) {
                $result[] = $full;
                $result = array_merge($result, getDirectories($full, $root));
            }
        }
    }
    return $result;
}
$all_dirs = getDirectories($root_dir, $root_dir);
?>
<!DOCTYPE html>
<html lang="id">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>📂 Simple File Manager</title>
    <style>
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f0f2f5;
            padding: 20px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        h1 {
            color: #1a1a2e;
            border-bottom: 3px solid #4a90d9;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .path {
            background: #e9ecef;
            padding: 10px 15px;
            border-radius: 8px;
            margin: 10px 0 20px 0;
            font-size: 14px;
            word-break: break-all;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .path .dir {
            color: #2c3e50;
            font-weight: 500;
        }
        .btn {
            display: inline-block;
            padding: 8px 16px;
            background: #4a90d9;
            color: white;
            text-decoration: none;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            font-size: 14px;
            transition: 0.2s;
        }
        .btn:hover {
            background: #357abd;
            transform: scale(1.02);
        }
        .btn-danger {
            background: #e74c3c;
        }
        .btn-danger:hover {
            background: #c0392b;
        }
        .btn-success {
            background: #27ae60;
        }
        .btn-success:hover {
            background: #229954;
        }
        .btn-warning {
            background: #f39c12;
        }
        .btn-warning:hover {
            background: #d68910;
        }
        .btn-info {
            background: #17a2b8;
        }
        .btn-info:hover {
            background: #138496;
        }
        .btn-sm {
            padding: 4px 10px;
            font-size: 12px;
        }
        .msg {
            padding: 12px 18px;
            border-radius: 6px;
            margin-bottom: 15px;
        }
        .msg-success {
            background: #d4edda;
            border: 1px solid #c3e6cb;
            color: #155724;
        }
        .msg-error {
            background: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
        }
        .row {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 8px;
            align-items: center;
        }
        .row form {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .row input[type="text"], .row input[type="file"], .row select {
            padding: 6px 10px;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 14px;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 10px;
        }
        th, td {
            padding: 10px 12px;
            text-align: left;
            border-bottom: 1px solid #e9ecef;
        }
        th {
            background: #f8f9fa;
            font-weight: 600;
            color: #495057;
        }
        tr:hover {
            background: #f8f9fa;
        }
        .folder-icon { color: #f39c12; font-weight: bold; }
        .file-icon { color: #4a90d9; }
        .actions {
            display: flex;
            gap: 5px;
            flex-wrap: wrap;
        }
        .edit-area {
            margin-top: 20px;
            border-top: 2px solid #4a90d9;
            padding-top: 15px;
        }
        .edit-area textarea {
            width: 100%;
            height: 350px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 6px;
            resize: vertical;
        }
        .edit-area .btn {
            margin-top: 8px;
        }
        .rename-form {
            display: inline-flex;
            gap: 5px;
            align-items: center;
            flex-wrap: wrap;
        }
        .rename-form input {
            padding: 4px 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 12px;
            width: 150px;
        }
        .checkbox-select {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .checkbox-select input[type="checkbox"] {
            width: 18px;
            height: 18px;
            cursor: pointer;
        }
        .select-all {
            cursor: pointer;
            padding: 4px 10px;
            background: #e9ecef;
            border-radius: 4px;
            font-size: 12px;
            border: none;
        }
        .select-all:hover {
            background: #dee2e6;
        }
        @media (max-width: 768px) {
            .container { padding: 15px; }
            .row { flex-direction: column; align-items: stretch; }
            .row form { flex-direction: column; align-items: stretch; }
            table { font-size: 13px; }
            td, th { padding: 8px; }
            .actions { flex-direction: column; }
            .rename-form input { width: 100%; }
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>📂 Simple File Manager</h1>

        <?php if (isset($msg) && $msg != ''): ?>
            <div class="msg msg-<?= $msg_type ?>">
                <?php if ($msg_type == 'success'): ?>✅<?php else: ?>❌<?php endif; ?>
                <?= htmlspecialchars($msg) ?>
            </div>
        <?php endif; ?>

        <!-- Path -->
        <div class="path">
            <span class="dir">📁 <?= htmlspecialchars(str_replace($root_dir, '', $current_dir) ?: '/') ?></span>
            <div>
                <?php if ($back_link): ?>
                    <a href="<?= $back_link ?>" class="btn btn-sm">⬅ Kembali</a>
                <?php endif; ?>
                <a href="<?= htmlspecialchars($_SERVER['REQUEST_URI']) ?>" class="btn btn-sm btn-info">🔄 Refresh</a>
            </div>
        </div>

        <!-- Toolbar Upload & Create Folder -->
        <div class="row">
            <!-- Upload -->
            <form method="POST" enctype="multipart/form-data">
                <input type="file" name="file" required>
                <button type="submit" name="upload" class="btn btn-success btn-sm">⬆ Upload</button>
            </form>

            <!-- Buat Folder -->
            <form method="POST">
                <input type="text" name="folder_name" placeholder="Nama folder" required>
                <button type="submit" name="create_folder" class="btn btn-sm">📁 Buat Folder</button>
            </form>

            <!-- Zip Download -->
            <form method="POST" id="zipForm" onsubmit="return confirm('Download file terpilih?')">
                <button type="submit" name="zip_download" class="btn btn-info btn-sm">📦 Download Zip</button>
            </form>
        </div>

        <!-- Copy/Move Tools -->
        <?php if (!empty($all_dirs)): ?>
        <div class="row" style="background: #e8f4f8;">
            <form method="POST">
                <select name="source_item" required style="padding:6px; border-radius:6px; border:1px solid #ccc;">
                    <option value="">Pilih item</option>
                    <?php foreach ($all_items as $item): ?>
                        <option value="<?= htmlspecialchars($item) ?>"><?= htmlspecialchars($item) ?></option>
                    <?php endforeach; ?>
                </select>
                <select name="destination_dir" required style="padding:6px; border-radius:6px; border:1px solid #ccc;">
                    <option value="">Tujuan</option>
                    <?php foreach ($all_dirs as $dir): ?>
                        <option value="<?= htmlspecialchars($dir) ?>"><?= htmlspecialchars(str_replace($root_dir, '', $dir) ?: '/') ?></option>
                    <?php endforeach; ?>
                </select>
                <select name="action_type" style="padding:6px; border-radius:6px; border:1px solid #ccc;">
                    <option value="copy">Copy</option>
                    <option value="move">Move</option>
                </select>
                <button type="submit" name="copy_move" class="btn btn-sm">📋 Copy/Move</button>
            </form>
        </div>
        <?php endif; ?>

        <!-- Daftar File & Folder -->
        <table>
            <thead>
                <tr>
                    <th style="width:30px;">
                        <input type="checkbox" id="selectAll" onclick="toggleAll(this)">
                    </th>
                    <th>Nama</th>
                    <th>Ukuran</th>
                    <th>Terakhir Dimodifikasi</th>
                    <th>Aksi</th>
                </tr>
            </thead>
            <tbody>
                <?php if (empty($all_items)): ?>
                    <tr><td colspan="5" style="text-align:center; color:#999;">Kosong</td></tr>
                <?php endif; ?>
                <?php foreach ($all_items as $item): 
                    $full_path = $current_dir . DIRECTORY_SEPARATOR . $item;
                    $is_dir = is_dir($full_path);
                    $icon = $is_dir ? '📁' : '📄';
                    $size = $is_dir ? '-' : formatSize(filesize($full_path));
                    $link = $is_dir ? "?dir=" . urlencode($full_path) : '#';
                    $mtime = date('Y-m-d H:i:s', filemtime($full_path));
                    $is_php = pathinfo($item, PATHINFO_EXTENSION) == 'php';
                ?>
                <tr>
                    <td>
                        <input type="checkbox" name="selected_items[]" form="zipForm" value="<?= htmlspecialchars($item) ?>" class="item-checkbox">
                    </td>
                    <td>
                        <?php if ($is_dir): ?>
                            <a href="<?= $link ?>" style="text-decoration:none; color:#2c3e50; font-weight:500;">
                                <span class="folder-icon"><?= $icon ?></span> <?= htmlspecialchars($item) ?>
                            </a>
                        <?php else: ?>
                            <span class="file-icon"><?= $icon ?></span> <?= htmlspecialchars($item) ?>
                            <?php if ($is_php): ?>
                                <span style="background:#ff6b6b; color:white; padding:2px 8px; border-radius:4px; font-size:10px; margin-left:5px;">PHP</span>
                            <?php endif; ?>
                        <?php endif; ?>
                    </td>
                    <td><?= $size ?></td>
                    <td><?= $mtime ?></td>
                    <td>
                        <div class="actions">
                            <?php if (!$is_dir): ?>
                                <!-- Download -->
                                <a href="?dir=<?= urlencode($current_dir) ?>&download=<?= urlencode($item) ?>" class="btn btn-info btn-sm">⬇ Download</a>
                                <!-- Edit -->
                                <a href="?dir=<?= urlencode($current_dir) ?>&edit=<?= urlencode($item) ?>" class="btn btn-warning btn-sm">✏️ Edit</a>
                            <?php endif; ?>

                            <!-- Rename -->
                            <form method="POST" class="rename-form" onsubmit="return confirm('Rename <?= htmlspecialchars($item) ?>?')">
                                <input type="hidden" name="old_name" value="<?= htmlspecialchars($item) ?>">
                                <input type="text" name="new_name" placeholder="Nama baru" required>
                                <button type="submit" name="rename" class="btn btn-sm">🔄 Rename</button>
                            </form>

                            <!-- Delete -->
                            <?php if (basename($full_path) != 'filemanager.php'): ?>
                            <a href="?dir=<?= urlencode($current_dir) ?>&delete=<?= urlencode($item) ?>" 
                               onclick="return confirm('Hapus <?= htmlspecialchars($item) ?>?')" 
                               class="btn btn-danger btn-sm">🗑 Hapus</a>
                            <?php endif; ?>
                        </div>
                    </td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>

        <!-- Area Edit File -->
        <?php if ($edit_content !== '' && isset($_GET['edit'])): ?>
        <div class="edit-area">
            <h3>✏️ Edit File: <?= htmlspecialchars($edit_file) ?></h3>
            <form method="POST">
                <input type="hidden" name="edit_file" value="<?= htmlspecialchars($edit_file) ?>">
                <textarea name="content" <?= (basename($edit_file) == 'filemanager.php') ? 'readonly' : '' ?>><?= htmlspecialchars($edit_content) ?></textarea>
                <br>
                <?php if (basename($edit_file) != 'filemanager.php'): ?>
                    <button type="submit" name="save_content" class="btn btn-success">💾 Simpan</button>
                <?php endif; ?>
                <a href="?dir=<?= urlencode($current_dir) ?>" class="btn">❌ Tutup</a>
            </form>
        </div>
        <?php endif; ?>

        <div style="margin-top: 25px; font-size: 12px; color: #999; text-align: center; border-top: 1px solid #e9ecef; padding-top: 15px;">
            Simple File Manager v2.0 | Root: <?= htmlspecialchars($root_dir) ?> | Total: <?= count($all_items) ?> item
        </div>
    </div>

    <script>
        // Select/Deselect all checkboxes
        function toggleAll(master) {
            var checkboxes = document.getElementsByClassName('item-checkbox');
            for (var i = 0; i < checkboxes.length; i++) {
                checkboxes[i].checked = master.checked;
            }
        }
        
        // Update master checkbox when individual checkbox changes
        document.addEventListener('DOMContentLoaded', function() {
            var checkboxes = document.getElementsByClassName('item-checkbox');
            var selectAll = document.getElementById('selectAll');
            if (selectAll) {
                for (var i = 0; i < checkboxes.length; i++) {
                    checkboxes[i].addEventListener('change', function() {
                        var allChecked = true;
                        for (var j = 0; j < checkboxes.length; j++) {
                            if (!checkboxes[j].checked) {
                                allChecked = false;
                                break;
                            }
                        }
                        selectAll.checked = allChecked;
                    });
                }
            }
        });
    </script>
</body>
</html>