<?php
// ============================================
// 文件: edit.php (完整可用)
// 说明: 支持海报、票根、合影裁剪，观影人管理
// ============================================

require_once 'config.php';
checkLogin();

$id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
if ($id <= 0) {
    header('Location: index.php');
    exit;
}

$movie = getMovie($id);
if (!$movie) {
    header('Location: index.php');
    exit;
}

$admin = getCurrentAdmin();
$cinemas = getCinemas();

// 获取所有观影人
$db = getDB();
$stmt = $db->query("SELECT * FROM persons ORDER BY name");
$all_persons = $stmt->fetchAll();

$error = '';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $title = trim($_POST['title'] ?? '');
    $info = trim($_POST['info'] ?? '');
    $watch_date = $_POST['watch_date'] ?? '';
    $cinema_id = $_POST['cinema_id'] ?? '';
    $viewer_selects = $_POST['viewer_select'] ?? [];
    $viewer_news = $_POST['viewers_new'] ?? [];

    $poster_crop = $_POST['poster_crop'] ?? '';
    $ticket_crop = $_POST['ticket_crop'] ?? '';
    $photo_crops = $_POST['photo_crop'] ?? [];

    // 电影院：选择已有影院、新建影院或留空
    $cinema_id = resolveCinemaId(
        $cinema_id,
        trim($_POST['new_cinema_place'] ?? ''),
        trim($_POST['new_cinema_name'] ?? ''),
        trim($_POST['new_cinema_address'] ?? '')
    );

    if (empty($title)) {
        $error = '请输入电影名称';
    } elseif (empty($watch_date)) {
        $error = '请选择观影日期';
    } else {
        // ----- 海报：裁剪结果优先，其次上传新文件 -----
        $poster_path = $movie['poster_path'];
        if (!empty($poster_crop)) {
            $new_path = saveBase64Image($poster_crop, POSTER_DIR, 'poster');
            if ($new_path) {
                deleteStoredFile($poster_path);
                $poster_path = $new_path;
            } else {
                $error = '海报裁剪保存失败，请重试';
            }
        } else {
            $uploaded = uploadImageFile('poster', POSTER_DIR, 'uploads/posters/');
            if ($uploaded) {
                deleteStoredFile($poster_path);
                $poster_path = $uploaded;
            }
        }

        // ----- 票根：裁剪结果优先，其次上传新文件 -----
        $ticket_path = $movie['ticket_path'];
        if (!empty($ticket_crop)) {
            $new_path = saveBase64Image($ticket_crop, TICKET_DIR, 'ticket');
            if ($new_path) {
                deleteStoredFile($ticket_path);
                $ticket_path = $new_path;
            } else {
                $error = '票根裁剪保存失败，请重试';
            }
        } else {
            $uploaded = uploadImageFile('ticket', TICKET_DIR, 'uploads/tickets/');
            if ($uploaded) {
                deleteStoredFile($ticket_path);
                $ticket_path = $uploaded;
            }
        }

        // 前面处理没有错误，才更新数据库
        if (empty($error)) {
            // 更新电影基本信息
            $stmt = $db->prepare("
                UPDATE movies 
                SET title = ?, info = ?, poster_path = ?, ticket_path = ?, cinema_id = ?, watch_date = ?
                WHERE id = ?
            ");
            $stmt->execute([$title, $info, $poster_path, $ticket_path, $cinema_id, $watch_date, $id]);

            // ----- 合影：替换已裁剪的图片 -----
            if (!empty($photo_crops)) {
                foreach ($photo_crops as $photo_id => $base64_data) {
                    if (empty($base64_data)) continue;
                    $stmt = $db->prepare("SELECT photo_path FROM movie_photos WHERE id = ? AND movie_id = ?");
                    $stmt->execute([$photo_id, $id]);
                    $old = $stmt->fetch();
                    if ($old) {
                        $new_path = saveBase64Image($base64_data, PHOTO_DIR, 'photo');
                        if ($new_path) {
                            deleteStoredFile($old['photo_path']);
                            $stmt = $db->prepare("UPDATE movie_photos SET photo_path = ? WHERE id = ?");
                            $stmt->execute([$new_path, $photo_id]);
                        }
                    }
                }
            }

            // ----- 新增合影照片 -----
            uploadMultiplePhotos('new_photos', $id);

            // ----- 一起看的人 -----
            $stmt = $db->prepare("DELETE FROM viewers WHERE movie_id = ?");
            $stmt->execute([$id]);
            linkViewers($id, resolvePersonIds($viewer_selects, $viewer_news));

            header('Location: detail.php?id=' . $id);
            exit;
        }
    }
}

// 准备观影人数据
$current_person_ids = array_column($movie['viewers'], 'person_id');
$current_person_ids = array_filter($current_person_ids, function($v) { return $v > 0; });
if (empty($current_person_ids)) {
    $current_person_ids = [0];
}
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>编辑电影 - 电影日志</title>
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.5.13/cropper.min.css">
    <style>
        /* ===== 全局样式 ===== */
        .form-container { max-width: 720px; margin: 0 auto; padding: 20px; }
        .form-card { background: var(--card-bg); border-radius: 16px; padding: 32px 36px; box-shadow: var(--shadow); }
        .form-card h2 { font-size: 24px; font-weight: 700; margin: 0 0 8px; }
        .form-card .sub { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; font-weight: 600; font-size: 14px; color: var(--text-primary); margin-bottom: 6px; }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%; padding: 12px 16px; border: 1px solid var(--border-color); border-radius: 10px;
            font-size: 15px; font-family: inherit; background: var(--input-bg); color: var(--text-primary);
            transition: border-color 0.2s, box-shadow 0.2s; box-sizing: border-box;
        }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus {
            outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(230,126,34,0.12);
        }
        .form-group textarea { min-height: 100px; resize: vertical; }
        .form-group input[type="file"] { padding: 10px 12px; background: var(--bg-secondary); border: 1px dashed var(--border-color); }
        .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .form-hint { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
        .viewer-input-group { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
        .viewer-input-group select, .viewer-input-group input { flex: 1; }
        .viewer-input-group select { width: 60%; }
        .viewer-input-group input[type="text"] { width: 40%; }
        .btn-remove-viewer { background: none; border: none; color: #e74c3c; font-size: 20px; cursor: pointer; padding: 0 8px; line-height: 1; transition: transform 0.2s; }
        .btn-remove-viewer:hover { transform: scale(1.2); }
        .btn-add-viewer { background: var(--bg-secondary); border: 1px dashed var(--border-color); border-radius: 8px; padding: 8px 16px; color: var(--text-secondary); cursor: pointer; font-size: 14px; transition: all 0.2s; width: 100%; }
        .btn-add-viewer:hover { border-color: var(--primary); color: var(--primary); background: rgba(230,126,34,0.05); }
        .form-actions { display: flex; gap: 12px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border-color); }
        .form-actions .btn { padding: 12px 32px; font-size: 16px; }
        .btn-secondary { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border-color); }
        .btn-secondary:hover { background: var(--border-color); }
        .error-box { background: rgba(231,76,60,0.08); border: 1px solid rgba(231,76,60,0.2); color: #e74c3c; padding: 12px 16px; border-radius: 10px; margin-bottom: 20px; font-size: 14px; }
        .cinema-new-group { margin-top: 12px; padding: 16px 18px; background: var(--bg-secondary); border-radius: 10px; border: 1px solid var(--border-color); }
        .cinema-new-group .form-group:last-child { margin-bottom: 0; }
        .current-files { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
        .current-files a { color: var(--primary); text-decoration: none; }
        .current-files a:hover { text-decoration: underline; }
        .crop-btn {
            display: inline-block;
            padding: 4px 12px;
            background: #3498db;
            color: #fff;
            border: none;
            border-radius: 4px;
            font-size: 12px;
            cursor: pointer;
            margin-top: 4px;
        }
        .crop-btn:hover { background: #2980b9; }
        .image-preview {
            max-width: 120px;
            max-height: 120px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }
        .photo-item {
            display: inline-block;
            margin: 4px;
            text-align: center;
        }
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0,0,0,0.6);
            z-index: 999;
            justify-content: center;
            align-items: center;
        }
        .modal-overlay.active { display: flex; }
        .modal-content {
            background: var(--card-bg);
            max-width: 600px;
            width: 90%;
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
            max-height: 90vh;
            overflow-y: auto;
        }
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }
        .modal-header h3 { margin: 0; }
        .modal-header .close-btn {
            background: none;
            border: none;
            font-size: 28px;
            cursor: pointer;
            color: var(--text-secondary);
        }
        .modal-body img { max-width: 100%; display: block; }
        .modal-footer {
            margin-top: 16px;
            display: flex;
            gap: 12px;
            justify-content: flex-end;
        }
        @media (max-width: 600px) {
            .form-card { padding: 20px 16px; }
            .form-row { grid-template-columns: 1fr; }
            .form-actions { flex-direction: column; }
            .form-actions .btn { width: 100%; text-align: center; }
        }
    </style>
</head>
<body>
    <!-- 导航栏 -->
<?php include 'nav.php'; ?>

    <main class="main-content">
        <div class="form-container">
            <div class="form-card">
                <h2>✏️ 编辑电影</h2>
                <p class="sub">修改「<?= h($movie['title']) ?>」的信息</p>

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

                <form method="POST" action="" enctype="multipart/form-data" id="editForm">
                    <!-- 电影名称 -->
                    <div class="form-group">
                        <label>电影名称 <span class="hint">*必填</span></label>
                        <input type="text" name="title" value="<?= h($movie['title']) ?>" required>
                    </div>

                    <!-- 电影信息 -->
                    <div class="form-group">
                        <label>电影信息</label>
                        <textarea name="info"><?= h($movie['info']) ?></textarea>
                    </div>

                    <!-- 观影日期 -->
                    <div class="form-group">
                        <label>观影日期 <span class="hint">*必填</span></label>
                        <input type="date" name="watch_date" value="<?= $movie['watch_date'] ?>" required>
                    </div>

                    <!-- 电影院 -->
                    <div class="form-group">
                        <label>电影院</label>
                        <select name="cinema_id" id="cinemaSelect" onchange="toggleNewCinema()">
                            <option value="">-- 不选择 --</option>
                            <?php foreach ($cinemas as $c): ?>
                                <option value="<?= $c['id'] ?>" <?= ($movie['cinema_id'] == $c['id']) ? 'selected' : '' ?>>
                                    <?= h($c['place']) ?> · <?= h($c['name']) ?>
                                </option>
                            <?php endforeach; ?>
                            <option value="new">➕ 新建电影院</option>
                        </select>
                    </div>
                    <div class="cinema-new-group" id="newCinemaGroup" style="display: none;">
                        <div class="form-group">
                            <label>所在地方 <span class="hint">如: 万达广场</span></label>
                            <input type="text" name="new_cinema_place" placeholder="如: 万达广场">
                        </div>
                        <div class="form-group">
                            <label>电影院名称 <span class="hint">*必填</span></label>
                            <input type="text" name="new_cinema_name" placeholder="如: 万达影城(IMAX店)">
                        </div>
                        <div class="form-group">
                            <label>详细地址</label>
                            <input type="text" name="new_cinema_address" placeholder="详细地址">
                        </div>
                    </div>

                    <!-- 观影人 -->
                    <div class="form-group">
                        <label>一起看的人</label>
                        <div id="viewerContainer"></div>
                        <button type="button" class="btn-add-viewer" onclick="addViewerRow()">➕ 添加一位</button>
                        <div class="form-hint">选择已有观影人，或选择“新增”后输入姓名</div>
                    </div>

                    <!-- 海报 -->
                    <div class="form-group">
                        <label>电影海报</label>
                        <div>
                            <?php if ($movie['poster_path'] && file_exists(__DIR__ . '/' . $movie['poster_path'])): ?>
                                <img src="/<?= $movie['poster_path'] ?>" class="image-preview" id="posterPreview">
                                <br>
                                <button type="button" class="crop-btn" onclick="openCrop('poster', '/<?= $movie['poster_path'] ?>')">✂️ 裁剪海报</button>
                                <input type="hidden" name="poster_crop" id="poster_crop">
                            <?php else: ?>
                                <span style="color:var(--text-secondary);font-size:14px;">暂无海报</span>
                            <?php endif; ?>
                        </div>
                        <div style="margin-top:6px;">
                            <label style="font-weight:400;font-size:13px;">或上传新海报：</label>
                            <input type="file" name="poster" accept="image/*">
                        </div>
                    </div>

                    <!-- 票根 -->
                    <div class="form-group">
                        <label>电影票扫描件</label>
                        <div>
                            <?php if ($movie['ticket_path'] && file_exists(__DIR__ . '/' . $movie['ticket_path'])): ?>
                                <img src="/<?= $movie['ticket_path'] ?>" class="image-preview" id="ticketPreview">
                                <br>
                                <button type="button" class="crop-btn" onclick="openCrop('ticket', '/<?= $movie['ticket_path'] ?>')">✂️ 裁剪票根</button>
                                <input type="hidden" name="ticket_crop" id="ticket_crop">
                            <?php else: ?>
                                <span style="color:var(--text-secondary);font-size:14px;">暂无票根</span>
                            <?php endif; ?>
                        </div>
                        <div style="margin-top:6px;">
                            <label style="font-weight:400;font-size:13px;">或上传新票根：</label>
                            <input type="file" name="ticket" accept="image/*">
                        </div>
                    </div>

                    <!-- 观影照片 -->
                    <div class="form-group">
                        <label>观影照片</label>
                        <div>
                            <?php if (!empty($movie['photos'])): ?>
                                <?php foreach ($movie['photos'] as $photo): ?>
                                    <div class="photo-item" id="photo_<?= $photo['id'] ?>">
                                        <img src="/<?= $photo['photo_path'] ?>" class="image-preview" style="display:block;">
                                        <button type="button" class="crop-btn" onclick="openCrop('photo_<?= $photo['id'] ?>', '/<?= $photo['photo_path'] ?>')">✂️ 裁剪</button>
                                        <input type="hidden" name="photo_crop[<?= $photo['id'] ?>]" id="photo_crop_<?= $photo['id'] ?>">
                                    </div>
                                <?php endforeach; ?>
                            <?php else: ?>
                                <span style="color:var(--text-secondary);font-size:14px;">暂无观影照片</span>
                            <?php endif; ?>
                        </div>
                        <div style="margin-top:6px;">
                            <label style="font-weight:400;font-size:13px;">新增照片（可多选）：</label>
                            <input type="file" name="new_photos[]" accept="image/*" multiple>
                        </div>
                    </div>

                    <div class="form-actions">
                        <button type="submit" class="btn btn-primary">💾 保存修改</button>
                        <a href="detail.php?id=<?= $id ?>" class="btn btn-secondary">取消</a>
                    </div>
                </form>
            </div>
        </div>
    </main>

    <!-- 裁剪模态框 -->
    <div class="modal-overlay" id="cropModal">
        <div class="modal-content">
            <div class="modal-header">
                <h3>✂️ 裁剪图片</h3>
                <button class="close-btn" onclick="closeCrop()">&times;</button>
            </div>
            <div class="modal-body">
                <img id="cropImage" src="">
            </div>
            <div class="modal-footer">
                <button class="btn btn-outline" onclick="closeCrop()">取消</button>
                <button class="btn btn-primary" onclick="cropSave()">✅ 确认裁剪</button>
            </div>
        </div>
    </div>

    <script src="js/main.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/cropperjs/1.5.13/cropper.min.js"></script>
    <script>
        // ============================================================
        // 完整 JavaScript
        // ============================================================

        // ---------- 观影人 ----------
        var allPersons = <?= json_encode($all_persons) ?>;
        var selectedPersonIds = <?= json_encode($current_person_ids) ?>;

        function createViewerRow(value) {
            var container = document.getElementById('viewerContainer');
            var div = document.createElement('div');
            div.className = 'viewer-input-group';
            var selectHtml = '<select name="viewer_select[]" onchange="toggleNewViewer(this)" class="viewer-select" style="flex:1;padding:8px;border:1px solid #ddd;border-radius:6px;">';
            selectHtml += '<option value="">-- 选择 --</option>';
            allPersons.forEach(function(p) {
                var selected = (p.id == value) ? 'selected' : '';
                selectHtml += '<option value="' + p.id + '" ' + selected + '>' + p.name + '</option>';
            });
            selectHtml += '<option value="new" ' + (value === 'new' ? 'selected' : '') + '>➕ 新增</option>';
            selectHtml += '</select>';
            var inputHtml = '<input type="text" name="viewers_new[]" placeholder="输入新姓名" style="flex:1;display:' + (value === 'new' ? 'block' : 'none') + ';padding:8px;border:1px solid #ddd;border-radius:6px;">';
            var removeBtn = '<button type="button" class="btn-remove-viewer" onclick="removeViewerRow(this)">×</button>';
            div.innerHTML = selectHtml + inputHtml + removeBtn;
            container.appendChild(div);
        }

        function addViewerRow(value) {
            value = value || '';
            createViewerRow(value);
        }

        document.addEventListener('DOMContentLoaded', function() {
            var container = document.getElementById('viewerContainer');
            container.innerHTML = '';
            if (selectedPersonIds.length > 0) {
                selectedPersonIds.forEach(function(pid) {
                    if (pid === 0) createViewerRow('');
                    else createViewerRow(pid);
                });
            } else {
                createViewerRow('');
            }
            toggleNewCinema();
        });

        // ---------- 裁剪 ----------
        let cropper = null;
        let currentTarget = '';

        function openCrop(target, imgSrc) {
            currentTarget = target;
            var img = document.getElementById('cropImage');
            img.src = imgSrc;
            document.getElementById('cropModal').classList.add('active');
            if (cropper) {
                cropper.destroy();
                cropper = null;
            }
            setTimeout(function() {
                cropper = new Cropper(img, {
                    aspectRatio: NaN,
                    viewMode: 1,
                    dragMode: 'move',
                    autoCropArea: 0.8,
                    responsive: true,
                    restore: false,
                });
            }, 150);
        }

        function closeCrop() {
            document.getElementById('cropModal').classList.remove('active');
            if (cropper) {
                cropper.destroy();
                cropper = null;
            }
        }

        function cropSave() {
            if (!cropper) {
                alert('请先加载图片');
                return;
            }
            try {
                var canvas = cropper.getCroppedCanvas({
                    width: 600,
                    height: 600,
                    imageSmoothingQuality: 'high',
                });
                if (!canvas) {
                    alert('裁剪失败，请重试');
                    return;
                }
                var base64 = canvas.toDataURL('image/jpeg', 0.9);
                if (currentTarget === 'poster') {
                    document.getElementById('poster_crop').value = base64;
                    var preview = document.getElementById('posterPreview');
                    if (preview) preview.src = base64;
                } else if (currentTarget === 'ticket') {
                    document.getElementById('ticket_crop').value = base64;
                    var preview = document.getElementById('ticketPreview');
                    if (preview) preview.src = base64;
                } else if (currentTarget.startsWith('photo_')) {
                    var photoId = currentTarget.replace('photo_', '');
                    document.getElementById('photo_crop_' + photoId).value = base64;
                    var preview = document.querySelector('#photo_' + photoId + ' .image-preview');
                    if (preview) preview.src = base64;
                }
                closeCrop();
            } catch (e) {
                alert('裁剪失败：' + e.message);
            }
        }

        // 点击模态框外部关闭
        document.getElementById('cropModal').addEventListener('click', function(e) {
            if (e.target === this) {
                closeCrop();
            }
        });
    </script>
</body>
</html>