<?php
/**
 * 예약 관리
 */
$sub_menu = '850200';
include_once('./_common.php');

// 관리자 권한 확인
if (!$is_admin) {
    alert('관리자만 접근할 수 있습니다.');
}

// 설치 확인
if (!is_consultant_installed()) {
    alert('상담 예약 시스템이 설치되지 않았습니다.', 'install.php');
}

$g5['title'] = '예약 관리';

// 필터 파라미터
$status = $_GET['status'] ?? '';
$date = $_GET['date'] ?? '';
$search = $_GET['search'] ?? '';
$page = (int)($_GET['page'] ?? 1);
$per_page = 20;

// 상태 변경 처리
if ($_POST['action'] == 'update_status') {
    $reservation_id = (int)$_POST['reservation_id'];
    $new_status = $_POST['new_status'];
    $memo = $_POST['memo'] ?? '';
    $send_sms = isset($_POST['send_sms']) && $_POST['send_sms'] == '1';
    $send_email = isset($_POST['send_email']) && $_POST['send_email'] == '1';

    if ($reservation_id && $new_status) {
        // 기존 상태 조회
        $old_res = sql_fetch("SELECT * FROM consultant_reservations WHERE id = {$reservation_id}");
        
        $sql = "UPDATE consultant_reservations 
                SET status = '" . sql_real_escape_string($new_status) . "',
                    admin_memo = '" . sql_real_escape_string($memo) . "',
                    updated_at = NOW()
                WHERE id = {$reservation_id}";

        if (sql_query($sql)) {
            // 💡 [추가] 알림 발송 로직
            if ($send_sms || $send_email) {
                // 템플릿 키 결정
                $template_key = '';
                if ($new_status == 'reserved') {
                    $template_key = 'consultant_confirmed_customer';
                } elseif ($new_status == 'cancelled') {
                    $template_key = 'consultant_cancelled_customer';
                }
                
                if ($template_key) {
                    // 알림 데이터 준비
                    $noti_data = [
                        'customer_name' => $old_res['customer_name'],
                        'customer_phone' => $old_res['customer_phone'],
                        'customer_email' => $old_res['customer_email'],
                        'reservation_date' => $old_res['reservation_date'],
                        'reservation_time' => substr($old_res['reservation_time'], 0, 5),
                        'payment_amount' => number_format($old_res['payment_amount']),
                        'cancel_reason' => $memo // 취소 사유로 메모 사용
                    ];

                    if ($send_sms) {
                        consultant_send_notification('sms', $template_key, $noti_data);
                    }
                    if ($send_email) {
                        consultant_send_notification('email', $template_key, $noti_data);
                    }
                }
            }

            alert('상태가 변경되었습니다.', $_SERVER['PHP_SELF'] . '?' . $_SERVER['QUERY_STRING']);
        } else {
            alert('상태 변경에 실패했습니다.');
        }
    }
}

// 검색 조건 구성
$where_conditions = ["is_deleted = 0"];

if ($status) {
    $where_conditions[] = "status = '" . sql_real_escape_string($status) . "'";
}

if ($date) {
    $where_conditions[] = "reservation_date = '" . sql_real_escape_string($date) . "'";
}

if ($search) {
    $search_escaped = sql_real_escape_string($search);
    $where_conditions[] = "(customer_name LIKE '%{$search_escaped}%' OR customer_phone LIKE '%{$search_escaped}%')";
}

$where_clause = implode(' AND ', $where_conditions);

// 전체 개수 조회
$count_sql = "SELECT COUNT(*) as total FROM consultant_reservations WHERE {$where_clause}";
$count_result = sql_fetch($count_sql);
$total = $count_result['total'];

// 페이징 계산
$offset = ($page - 1) * $per_page;
$total_pages = ceil($total / $per_page);

// 예약 목록 조회
$sql = "SELECT * FROM consultant_reservations 
        WHERE {$where_clause} 
        ORDER BY created_at DESC 
        LIMIT {$offset}, {$per_page}";

$reservations = [];
$result = sql_query($sql);
while ($row = sql_fetch_array($result)) {
    $reservations[] = $row;
}

// 상태 라벨
$status_labels = [
        'payment_pending' => '입금대기',
        'reserved' => '예약확정',
        'completed' => '상담완료',
        'cancelled' => '예약취소'
];

include_once(G5_ADMIN_PATH . '/admin.head.php');
?>

    <style>
        .reservations-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }

        .filter-form {
            background: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .reservations-table {
            background: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            overflow: hidden;
        }

        .table-header {
            background: #fff;
            padding: 15px 20px;
            font-weight: bold;
            border-bottom: 1px solid #ddd;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid #eee;
        }

        th {
            background: #fff;
            font-weight: bold;
        }

        .status-badge {
            padding: 4px 8px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: bold;
            text-align: center;
        }

        .status-payment_pending {
            background: #fff3cd;
            color: #856404;
        }

        .status-reserved {
            background: #d4edda;
            color: #155724;
        }

        .status-completed {
            background: #cce5ff;
            color: #004085;
        }

        .status-cancelled {
            background: #f8d7da;
            color: #721c24;
        }

        .btn {
            padding: 6px 12px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            margin: 2px;
        }

        .btn-primary { background: #007bff; color: white; }
        .btn-success { background: #28a745; color: white; }
        .btn-warning { background: #ffc107; color: #212529; }
        .btn-danger { background: #dc3545; color: white; }
        .btn-secondary { background: #6c757d; color: white; }
        .btn-info { background: #17a2b8; color: white; } /* 견적작성 버튼용 */

        .form-control {
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
        }

        .pagination a,
        .pagination span {
            padding: 8px 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            text-decoration: none;
            color: #333;
        }

        .pagination .current {
            background: #007bff;
            color: white;
            border-color: #007bff;
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
        }

        .modal-content {
            background-color: white;
            margin: 15% auto;
            padding: 20px;
            border-radius: 8px;
            width: 400px;
            max-width: 90%;
        }

        .close {
            color: #aaa;
            float: right;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
        }

        .close:hover {
            color: black;
        }

        .no-data {
            text-align: center;
            padding: 40px;
            color: #666;
            font-style: italic;
        }

        @media (max-width: 768px) {
            .filter-form {
                flex-direction: column;
                align-items: stretch;
            }

            table {
                font-size: 12px;
            }

            th, td {
                padding: 8px 4px;
            }
        }
    </style>

    <div class="reservations-container">
        <h2><?php echo $g5['title']; ?></h2>

        <!-- 필터 폼 -->
        <form method="get" class="filter-form">
            <select name="status" class="form-control">
                <option value="">전체 상태</option>
                <?php foreach ($status_labels as $key => $label): ?>
                    <option value="<?php echo $key; ?>" <?php echo $status == $key ? 'selected' : ''; ?>>
                        <?php echo $label; ?>
                    </option>
                <?php endforeach; ?>
            </select>

            <input type="date" name="date" value="<?php echo $date; ?>" class="form-control" placeholder="예약일">

            <input type="text" name="search" value="<?php echo htmlspecialchars($search); ?>"
                   class="form-control" placeholder="고객명 또는 연락처 검색">

            <button type="submit" class="btn btn-primary">검색</button>
            <a href="<?php echo $_SERVER['PHP_SELF']; ?>" class="btn btn-secondary">초기화</a>
            <a href="dashboard.php" class="btn btn-secondary">대시보드로</a>
        </form>

        <!-- 예약 목록 -->
        <div class="reservations-table">
            <div class="table-header">
                <span>예약 목록 (총 <?php echo number_format($total); ?>건)</span>
                <span>페이지 <?php echo $page; ?> / <?php echo $total_pages; ?></span>
            </div>

            <?php if (!empty($reservations)): ?>
                <table>
                    <thead>
                    <tr>
                        <th>예약번호</th>
                        <th>고객정보</th>
                        <th>예약일시</th>
                        <th>상담유형</th>
                        <th>상담비</th>
                        <th>상태</th>
                        <th>신청일</th>
                        <th>관리</th>
                    </tr>
                    </thead>
                    <tbody>
                    <?php foreach ($reservations as $reservation): ?>
                        <tr>
                            <td>#<?php echo $reservation['id']; ?></td>
                            <td>
                                <strong><?php echo htmlspecialchars($reservation['customer_name']); ?></strong><br>
                                <small><?php echo htmlspecialchars($reservation['customer_phone']); ?></small><br>
                                <small><?php echo htmlspecialchars($reservation['customer_email']); ?></small>
                            </td>
                            <td>
                                <?php echo $reservation['reservation_date']; ?><br>
                                <small><?php echo substr($reservation['reservation_time'], 0, 5); ?></small>
                            </td>
                            <td>
                                <?php
                                $types = ['onsite' => '현장', 'online' => '온라인', 'phone' => '전화'];
                                echo $types[$reservation['consultation_type']] ?? $reservation['consultation_type'];
                                ?>
                            </td>
                            <td><?php echo number_format($reservation['payment_amount']); ?>원</td>
                            <td>
                        <span class="status-badge status-<?php echo $reservation['status']; ?>">
                            <?php echo $status_labels[$reservation['status']] ?? $reservation['status']; ?>
                        </span>
                            </td>
                            <td><?php echo date('m-d H:i', strtotime($reservation['created_at'])); ?></td>
                            <td>
                                <button onclick="openStatusModal(<?php echo $reservation['id']; ?>, '<?php echo $reservation['status']; ?>')" class="btn btn-warning btn-sm">상태변경</button>
                            </td>
                        </tr>
                    <?php endforeach; ?>
                    </tbody>
                </table>
            <?php else: ?>
                <div class="no-data">
                    검색 조건에 맞는 예약이 없습니다.
                </div>
            <?php endif; ?>
        </div>

        <!-- 페이징 -->
        <?php if ($total_pages > 1): ?>
            <div class="pagination">
                <?php if ($page > 1): ?>
                    <a href="?<?php echo http_build_query(array_merge($_GET, ['page' => $page - 1])); ?>">이전</a>
                <?php endif; ?>

                <?php
                $start_page = max(1, $page - 5);
                $end_page = min($total_pages, $page + 5);

                for ($i = $start_page; $i <= $end_page; $i++):
                    ?>
                    <?php if ($i == $page): ?>
                    <span class="current"><?php echo $i; ?></span>
                <?php else: ?>
                    <a href="?<?php echo http_build_query(array_merge($_GET, ['page' => $i])); ?>"><?php echo $i; ?></a>
                <?php endif; ?>
                <?php endfor; ?>

                <?php if ($page < $total_pages): ?>
                    <a href="?<?php echo http_build_query(array_merge($_GET, ['page' => $page + 1])); ?>">다음</a>
                <?php endif; ?>
            </div>
        <?php endif; ?>
    </div>

    <!-- 상태 변경 모달 -->
    <div id="statusModal" class="modal">
        <div class="modal-content">
            <span class="close">&times;</span>
            <h3>예약 상태 변경</h3>
            <form method="post">
                <input type="hidden" name="action" value="update_status">
                <input type="hidden" name="reservation_id" id="modal_reservation_id">

                <div style="margin: 15px 0;">
                    <label for="modal_new_status">변경할 상태</label>
                    <select name="new_status" id="modal_new_status" class="form-control" required>
                        <?php foreach ($status_labels as $key => $label): ?>
                            <option value="<?php echo $key; ?>"><?php echo $label; ?></option>
                        <?php endforeach; ?>
                    </select>
                </div>
                <div style="margin: 15px 0;">
                    <label for="modal_memo">관리자 메모 (선택)</label>
                    <textarea name="memo" rows="3" style="width: 100%; padding: 8px; border: 1px solid #ddd; border-radius: 4px;"></textarea>
                </div>
                
                <!-- 💡 [추가] 알림 발송 옵션 -->
                <div style="margin: 15px 0; background: #f8f9fa; padding: 10px; border-radius: 4px;">
                    <div style="font-weight: bold; margin-bottom: 5px;">알림 발송</div>
                    <label style="margin-right: 15px;">
                        <input type="checkbox" name="send_sms" value="1" checked> 문자(SMS) 발송
                    </label>
                    <label>
                        <input type="checkbox" name="send_email" value="1" checked> 이메일 발송
                    </label>
                    <div style="font-size: 12px; color: #666; margin-top: 5px;">
                        * 예약확정/취소 상태 변경 시에만 발송됩니다.
                    </div>
                </div>

                <div style="text-align: center; margin-top: 20px;">
                    <button type="submit" class="btn btn-primary">확인</button>
                    <button type="button" onclick="closeModal()" class="btn btn-secondary">취소</button>
                </div>
            </form>
        </div>
    </div>

    <script>
        function openStatusModal(reservationId, currentStatus) {
            document.getElementById('modal_reservation_id').value = reservationId;
            document.getElementById('modal_new_status').value = currentStatus;
            document.getElementById('statusModal').style.display = 'block';
        }

        function closeModal() {
            document.getElementById('statusModal').style.display = 'none';
        }

        // 모달 외부 클릭시 닫기
        window.onclick = function(event) {
            const modal = document.getElementById('statusModal');
            if (event.target == modal) {
                modal.style.display = 'none';
            }
        }

        // 닫기 버튼
        document.querySelector('.close').onclick = function() {
            closeModal();
        }
    </script>

<?php
include_once(G5_ADMIN_PATH . '/admin.tail.php');
?>