Sindbad~EG File Manager

<?php
require_once '../../config/config.php';
checkLogin();

$pageTitle = "Manage Documents - " . APP_NAME;

// Check access
if (!isSuperuser()) {
    redirect('../../dashboard.php');
}

$db = Database::getInstance()->getConnection();
$success = '';
$error = '';

// Handle file upload
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['upload_document'])) {
    $title = trim($_POST['title'] ?? '');
    $description = trim($_POST['description'] ?? '');
    
    if (empty($title)) {
        $error = "Title is required";
    } elseif (empty($_FILES['document']['name'])) {
        $error = "Please select a file to upload";
    } else {
        $file = $_FILES['document'];
        $uploadDir = '../../docs/chatbot/';
        
        // Create directory if it doesn't exist
        if (!is_dir($uploadDir)) {
            mkdir($uploadDir, 0777, true);
        }
        
        $fileExt = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));
        $allowedExts = ['pdf', 'doc', 'docx', 'txt', 'md'];
        
        if (!in_array($fileExt, $allowedExts)) {
            $error = "Only PDF, DOC, DOCX, TXT, and MD files are allowed";
        } else {
            $newFilename = time() . '_' . preg_replace('/[^a-zA-Z0-9._-]/', '', $file['name']);
            $filePath = $uploadDir . $newFilename;
            
            if (move_uploaded_file($file['tmp_name'], $filePath)) {
                // Extract text content for indexing
                $contentText = '';
                if ($fileExt === 'txt' || $fileExt === 'md') {
                    $contentText = file_get_contents($filePath);
                }
                // For PDF/DOC, you would need additional libraries like PDFParser
                
                $stmt = $db->prepare("
                    INSERT INTO chatbot_documents 
                    (filename, original_filename, file_path, file_type, file_size, title, description, content_text, uploaded_by)
                    VALUES (:filename, :original_filename, :file_path, :file_type, :file_size, :title, :description, :content_text, :user_id)
                ");
                
                if ($stmt->execute([
                    'filename' => $newFilename,
                    'original_filename' => $file['name'],
                    'file_path' => $filePath,
                    'file_type' => $fileExt,
                    'file_size' => $file['size'],
                    'title' => $title,
                    'description' => $description,
                    'content_text' => $contentText,
                    'user_id' => $_SESSION['user_id']
                ])) {
                    $success = "Document uploaded successfully!";
                } else {
                    $error = "Failed to save document information";
                }
            } else {
                $error = "Failed to upload file";
            }
        }
    }
}

// Handle delete
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['delete_document'])) {
    $id = (int)$_POST['doc_id'];
    
    // Get file path
    $stmt = $db->prepare("SELECT file_path FROM chatbot_documents WHERE id = :id");
    $stmt->execute(['id' => $id]);
    $doc = $stmt->fetch(PDO::FETCH_ASSOC);
    
    if ($doc && file_exists($doc['file_path'])) {
        unlink($doc['file_path']);
    }
    
    $stmt = $db->prepare("DELETE FROM chatbot_documents WHERE id = :id");
    if ($stmt->execute(['id' => $id])) {
        $success = "Document deleted successfully!";
    }
}

// Handle toggle
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['toggle_document'])) {
    $id = (int)$_POST['doc_id'];
    $stmt = $db->prepare("UPDATE chatbot_documents SET is_active = NOT is_active WHERE id = :id");
    $stmt->execute(['id' => $id]);
    $success = "Document status updated!";
}

// Get all documents
$stmt = $db->query("
    SELECT d.*, u.full_name as uploaded_by_name
    FROM chatbot_documents d
    LEFT JOIN users u ON d.uploaded_by = u.id
    ORDER BY d.uploaded_at DESC
");
$documents = $stmt->fetchAll(PDO::FETCH_ASSOC);

include '../../includes/header.php';
include '../../includes/sidebar.php';
?>

<main class="main-content md:ml-64 pt-16">
    <div class="container mx-auto px-4 py-8">
        <!-- Header -->
        <div class="mb-6 flex justify-between items-center">
            <div>
                <h1 class="text-3xl font-bold text-gray-800">
                    <i class="fas fa-file-upload mr-2 text-purple-500"></i>Manage Documents
                </h1>
                <p class="text-gray-600 mt-2">Upload documents for AI learning and knowledge base</p>
            </div>
            <a href="index.php" class="bg-gray-600 text-white px-4 py-2 rounded-lg hover:bg-gray-700 transition">
                <i class="fas fa-arrow-left mr-2"></i>Back
            </a>
        </div>

        <?php if ($success): ?>
            <div id="successMessage" class="bg-green-100 border border-green-400 text-green-700 px-4 py-3 rounded-lg mb-6 flex items-center justify-between">
                <div><i class="fas fa-check-circle mr-2"></i><?php echo $success; ?></div>
                <button onclick="dismissMessage('successMessage')" class="text-green-700 hover:text-green-900">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        <?php endif; ?>

        <?php if ($error): ?>
            <div id="errorMessage" class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded-lg mb-6 flex items-center justify-between">
                <div><i class="fas fa-exclamation-circle mr-2"></i><?php echo $error; ?></div>
                <button onclick="dismissMessage('errorMessage')" class="text-red-700 hover:text-red-900">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        <?php endif; ?>

        <!-- Upload Form -->
        <div class="bg-white rounded-xl shadow-lg p-6 mb-8">
            <h3 class="text-lg font-bold text-gray-800 mb-4">
                <i class="fas fa-cloud-upload-alt mr-2"></i>Upload New Document
            </h3>
            <form method="POST" enctype="multipart/form-data" class="space-y-4">
                <div>
                    <label class="block text-sm font-medium text-gray-700 mb-2">Title *</label>
                    <input type="text" name="title" required
                           class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
                           placeholder="Document title">
                </div>
                <div>
                    <label class="block text-sm font-medium text-gray-700 mb-2">Description</label>
                    <textarea name="description" rows="3"
                              class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
                              placeholder="Brief description of the document"></textarea>
                </div>
                <div>
                    <label class="block text-sm font-medium text-gray-700 mb-2">Document File *</label>
                    <input type="file" name="document" required accept=".pdf,.doc,.docx,.txt,.md"
                           class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-purple-500">
                    <p class="text-xs text-gray-500 mt-1">Accepted formats: PDF, DOC, DOCX, TXT, MD (Max 10MB)</p>
                </div>
                <button type="submit" name="upload_document" class="bg-gradient-to-r from-purple-500 to-purple-600 text-white px-6 py-2 rounded-lg hover:shadow-lg transition">
                    <i class="fas fa-upload mr-2"></i>Upload Document
                </button>
            </form>
        </div>

        <!-- Documents List -->
        <div class="bg-white rounded-xl shadow-lg p-6">
            <h3 class="text-lg font-bold text-gray-800 mb-4">
                <i class="fas fa-folder-open mr-2"></i>Uploaded Documents (<?php echo count($documents); ?>)
            </h3>
            
            <?php if (empty($documents)): ?>
                <div class="text-center py-12 text-gray-500">
                    <i class="fas fa-file-alt text-6xl mb-4 text-gray-300"></i>
                    <p>No documents uploaded yet</p>
                </div>
            <?php else: ?>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <?php foreach ($documents as $doc): ?>
                        <div class="border border-gray-200 rounded-lg p-4 <?php echo $doc['is_active'] ? '' : 'bg-gray-50 opacity-60'; ?>">
                            <div class="flex items-start gap-3">
                                <div class="p-3 bg-purple-100 text-purple-600 rounded-lg">
                                    <i class="fas fa-file-<?php echo $doc['file_type'] === 'pdf' ? 'pdf' : 'alt'; ?> text-2xl"></i>
                                </div>
                                <div class="flex-1">
                                    <h4 class="font-bold text-gray-800 mb-1"><?php echo htmlspecialchars($doc['title']); ?></h4>
                                    <?php if ($doc['description']): ?>
                                        <p class="text-sm text-gray-600 mb-2"><?php echo htmlspecialchars($doc['description']); ?></p>
                                    <?php endif; ?>
                                    <div class="flex items-center gap-2 text-xs text-gray-500 mb-2">
                                        <span class="px-2 py-1 bg-gray-100 rounded"><?php echo strtoupper($doc['file_type']); ?></span>
                                        <span><?php echo number_format($doc['file_size'] / 1024, 1); ?> KB</span>
                                        <span><?php echo date('M d, Y', strtotime($doc['uploaded_at'])); ?></span>
                                    </div>
                                    <?php if ($doc['is_active']): ?>
                                        <span class="px-2 py-1 bg-green-100 text-green-700 text-xs rounded">Active</span>
                                    <?php else: ?>
                                        <span class="px-2 py-1 bg-gray-100 text-gray-700 text-xs rounded">Inactive</span>
                                    <?php endif; ?>
                                </div>
                                <div class="flex flex-col gap-2">
                                    <a href="<?php echo str_replace('../../', BASE_URL . '/', $doc['file_path']); ?>" target="_blank"
                                       class="text-blue-600 hover:text-blue-700" title="Download">
                                        <i class="fas fa-download"></i>
                                    </a>
                                    <form method="POST" class="inline">
                                        <input type="hidden" name="doc_id" value="<?php echo $doc['id']; ?>">
                                        <button type="submit" name="toggle_document" 
                                                class="text-gray-600 hover:text-blue-600" title="Toggle Status">
                                            <i class="fas fa-power-off"></i>
                                        </button>
                                    </form>
                                    <form method="POST" class="inline" onsubmit="return confirm('Delete this document?')">
                                        <input type="hidden" name="doc_id" value="<?php echo $doc['id']; ?>">
                                        <button type="submit" name="delete_document" 
                                                class="text-gray-600 hover:text-red-600" title="Delete">
                                            <i class="fas fa-trash"></i>
                                        </button>
                                    </form>
                                </div>
                            </div>
                        </div>
                    <?php endforeach; ?>
                </div>
            <?php endif; ?>
        </div>
    </div>
</main>

<?php include '../../includes/footer.php'; ?>