<?php
// ============================================
// 文件: import.php (修复版：观影人以空格分割，允许空日期)
// ============================================

require_once 'config.php';
checkLogin();

if (!function_exists('extractFileName')) {
    function extractFileName($input) {
        if (preg_match('/\(([^)]+)\)/', $input, $matches)) {
            $input = $matches[1];
        }
        $parts = explode('/', str_replace('\\', '/', $input));
        return trim(end($parts));
    }
}

$admin = getCurrentAdmin();
$result = [];
$error = '';

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['csv_file'])) {
    $file = $_FILES['csv_file'];
    if ($file['error'] !== UPLOAD_ERR_OK) {
        $error = '文件上传失败，错误代码：' . $file['error'];
    } else {
        $csv_data = file_get_contents($file['tmp_name']);
        $encoding = mb_detect_encoding($csv_data, ['UTF-8', 'GBK', 'GB2312'], true);
        if ($encoding !== 'UTF-8') {
            $csv_data = mb_convert_encoding($csv_data, 'UTF-8', $encoding);
        }
        
        $lines = explode("\n", $csv_data);
        array_shift($lines); // 跳过标题行
        $import_count = 0;
        $skip_count = 0;
        $errors = [];
        $db = getDB();
        $cinema_cache = [];
        
        $db->beginTransaction();
        try {
            foreach ($lines as $line_num => $line) {
                $line = trim($line);
                if (empty($line)) continue;
                
                $row = str_getcsv($line);
                if (count($row) < 9) {
                    $errors[] = "第 " . ($line_num + 2) . " 行列数不足，跳过";
                    $skip_count++;
                    continue;
                }
                
                $title = trim($row[0]);
                $cinema_name = trim($row[2]);
                $watch_date = trim($row[3]);
                $viewer_names = trim($row[4]);
                $ticket_file = trim($row[5]);
                $poster_file = trim($row[6]);
                $remark = trim($row[7]);
                $photo_file = trim($row[8]);
                
                if (empty($title)) {
                    $errors[] = "第 " . ($line_num + 2) . " 行缺少电影名称，跳过";
                    $skip_count++;
                    continue;
                }
                
                // 处理日期（允许为空）
                $formatted_date = null;
                if (!empty($watch_date)) {
                    $timestamp = strtotime($watch_date);
                    if ($timestamp === false) {
                        $errors[] = "第 " . ($line_num + 2) . " 行日期格式无效: $watch_date，跳过";
                        $skip_count++;
                        continue;
                    }
                    $formatted_date = date('Y-m-d', $timestamp);
                }
                
                // 电影院去重
                $cinema_id = null;
                if (!empty($cinema_name)) {
                    if (!isset($cinema_cache[$cinema_name])) {
                        $stmt = $db->prepare("SELECT id FROM cinemas WHERE name = ?");
                        $stmt->execute([$cinema_name]);
                        $existing = $stmt->fetch();
                        if ($existing) {
                            $cinema_cache[$cinema_name] = $existing['id'];
                        } else {
                            $stmt = $db->prepare("INSERT INTO cinemas (place, name, address) VALUES (?, ?, ?)");
                            $stmt->execute(['', $cinema_name, '']);
                            $cinema_id = $db->lastInsertId();
                            $cinema_cache[$cinema_name] = $cinema_id;
                        }
                    }
                    $cinema_id = $cinema_cache[$cinema_name];
                }
                
                $ticket_filename = extractFileName($ticket_file);
                $poster_filename = extractFileName($poster_file);
                $photo_filename = extractFileName($photo_file);
                
                $ticket_path = !empty($ticket_filename) ? 'uploads/tickets/' . $ticket_filename : null;
                $poster_path = !empty($poster_filename) ? 'uploads/posters/' . $poster_filename : null;
                $photo_path = !empty($photo_filename) ? 'uploads/photos/' . $photo_filename : null;
                
                $stmt = $db->prepare("
                    INSERT INTO movies (title, info, remark, poster_path, ticket_path, photo_path, cinema_id, watch_date)
                    VALUES (?, ?, ?, ?, ?, ?, ?, ?)
                ");
                $stmt->execute([
                    $title,
                    '',
                    $remark,
                    $poster_path,
                    $ticket_path,
                    $photo_path,
                    $cinema_id,
                    $formatted_date
                ]);
                $movie_id = $db->lastInsertId();
                
                // 处理观影人：按空白字符分割（空格、制表符等）
                if (!empty($viewer_names)) {
                    $viewers = preg_split('/\s+/', trim($viewer_names));
                    $viewers = array_filter($viewers, function($v) { return !empty($v); });
                    if (!empty($viewers)) {
                        $stmt = $db->prepare("INSERT INTO viewers (movie_id, name) VALUES (?, ?)");
                        foreach ($viewers as $name) {
                            $stmt->execute([$movie_id, $name]);
                        }
                    }
                }
                
                $import_count++;
            }
            
            $db->commit();
            $result = [
                'success' => true,
                'imported' => $import_count,
                'skipped' => $skip_count,
                'errors' => $errors
            ];
        } catch (Exception $e) {
            $db->rollBack();
            $error = '导入过程中发生错误：' . $e->getMessage();
        }
    }
}
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSV导入 - 电影日志</title>
    <link rel="stylesheet" href="css/style.css">
    <style>
        .form-container {
            max-width: 720px;
            margin: 0 auto;
            padding: 20px;
        }
        .card {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 28px 32px;
            box-shadow: var(--shadow);
            margin-bottom: 24px;
        }
        .card h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text-primary);
        }
        .card .sub {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 16px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .form-group input[type="file"] {
            padding: 8px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            width: 100%;
            background: var(--bg-secondary);
        }
        .btn {
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(230,126,34,0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
        }
        .btn-outline:hover {
            background: var(--bg-secondary);
        }
        .error-box {
            background: rgba(231,76,60,0.08);
            border: 1px solid rgba(231,76,60,0.2);
            color: #e74c3c;
            padding: 10px 14px;
            border-radius: 8px;
            margin-bottom: 16px;
            font-size: 14px;
        }
        .success-box {
            background: rgba(39,174,96,0.08);
            border: 1px solid rgba(39,174,96,0.2);
            color: #27ae60;
            padding: 10px 14px;
            border-radius: 8px;
            margin-bottom: 16px;
            font-size: 14px;
        }
        .result-details {
            background: var(--bg-secondary);
            border-radius: 8px;
            padding: 12px 16px;
            margin-top: 12px;
            font-size: 14px;
            max-height: 300px;
            overflow-y: auto;
        }
        .result-details .error-item {
            color: #e74c3c;
        }
        .format-hint {
            background: var(--bg-secondary);
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 12px;
        }
        .format-hint code {
            background: var(--bg-primary);
            padding: 2px 6px;
            border-radius: 4px;
        }
        @media (max-width: 600px) {
            .card {
                padding: 20px 16px;
            }
        }
    </style>
</head>
<body>
<?php include 'nav.php'; ?>

    <main class="main-content">
        <div class="form-container">
            <div class="card">
                <h2>📥 CSV批量导入</h2>
                <p class="sub">将整理好的电影数据一次性导入系统</p>

                <?php if ($error): ?>
                    <div class="error-box"><?= h($error) ?></div>
                <?php endif; ?>

                <?php if (isset($result['success']) && $result['success']): ?>
                    <div class="success-box">
                        ✅ 导入完成！成功 <strong><?= $result['imported'] ?></strong> 条，跳过 <strong><?= $result['skipped'] ?></strong> 条。
                        <?php if (!empty($result['errors'])): ?>
                            <div class="result-details">
                                <?php foreach ($result['errors'] as $err): ?>
                                    <div class="error-item">⚠️ <?= h($err) ?></div>
                                <?php endforeach; ?>
                            </div>
                        <?php endif; ?>
                    </div>
                <?php endif; ?>

                <form method="POST" enctype="multipart/form-data">
                    <div class="form-group">
                        <label>选择CSV文件</label>
                        <input type="file" name="csv_file" accept=".csv" required>
                    </div>
                    <button type="submit" class="btn btn-primary">开始导入</button>
                </form>

                <div class="format-hint">
                    <strong>📋 CSV格式要求：</strong><br>
                    列顺序（共9列）：<br>
                    <code>电影名称, 地点(忽略), 电影院名称, 观影日期, 观影人(以空格分隔), 电影票图片路径, 海报图片路径, 备注, 合影图片路径</code><br>
                    <br>
                    <strong>观影人格式：</strong> 多个姓名之间用空格分隔，例如 <code>张三 李四 王五</code><br>
                    <br>
                    <strong>图片路径格式：</strong> 可以包含路径，系统会自动提取最后一个 <code>/</code> 后的文件名。<br>
                    如果路径用括号括起来，如 <code>(电影票扫描件/电影票_阿甘正传.jpg)</code>，系统会自动提取括号内的内容再取文件名。<br>
                    <br>
                    <strong>示例行：</strong><br>
                    <code>阿甘正传, , 万达影城, 2024-01-15, 张三 李四, (电影票/阿甘正传.jpg), (海报/阿甘正传.jpg), 经典励志片, (合影/阿甘正传.jpg)</code><br>
                    <br>
                    <strong>📌 注意：</strong> 导入前请将图片文件放入对应的 <code>uploads/tickets/</code>、<code>uploads/posters/</code>、<code>uploads/photos/</code> 目录，并确保文件名与CSV中提取的一致。<br>
                    <strong>观影日期可为空</strong>，空日期的电影将排在最后。
                </div>
            </div>
        </div>
    </main>
</body>
</html>