carwash_order/process_booking.php

<?php
// 配置数据库连接参数
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "car_wash_db";

// 检查表单提交
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // 获取表单数据
    $customer_name = $_POST['customer_name'] ?? '';
    $phone = $_POST['phone'] ?? '';
    $car_model = $_POST['car_model'] ?? '';
    $car_number = $_POST['car_number'] ?? '';
    $booking_date = $_POST['booking_date'] ?? '';
    $time_slot = $_POST['time_slot'] ?? '';
    $package_id = $_POST['package_id'] ?? '';
    $notes = $_POST['notes'] ?? '';
    $source = $_POST['source'] ?? ''; // 来源标识，用于确定返回页面
    
    // 验证必填字段
    $errors = [];
    
    if (empty($customer_name)) {
        $errors[] = '请输入客户姓名';
    }
    
    if (empty($phone)) {
        $errors[] = '请输入手机号码';
    } elseif (!preg_match('/^1[3-9]\d{9}$/', $phone)) {
        $errors[] = '请输入正确的手机号码';
    }
    
    if (empty($car_number)) {
        $errors[] = '请输入车牌号';
    }
    
    if (empty($booking_date)) {
        $errors[] = '请选择预约日期';
    }
    
    if (empty($time_slot)) {
        $errors[] = '请选择预约时间';
    }
    
    if (empty($package_id)) {
        $errors[] = '请选择洗车套餐';
    }
    
    // 验证日期是否为过去
    $current_date = date('Y-m-d');
    if ($booking_date < $current_date) {
        $errors[] = '不能选择过去的日期';
    }
    
    // 如果有错误，返回错误信息
    if (!empty($errors)) {
        $error_message = implode('\n', $errors);
        echo "<script>
            alert('$error_message');
            window.history.back();
        </script>";
        exit;
    }
    
    // 创建数据库连接
    $conn = new mysqli($servername, $username, $password, $dbname);
    
    // 检查连接
    if ($conn->connect_error) {
        echo "<script>
            alert('数据库连接失败，请稍后重试');
            window.history.back();
        </script>";
        exit;
    }
    
    // 检查是否已经存在相同的预约（同一天、同一时间段、同一车牌号）
    $check_sql = "SELECT * FROM bookings 
                 WHERE booking_date = ? AND time_slot = ? AND car_number = ? AND status != '已取消'";
    $check_stmt = $conn->prepare($check_sql);
    $check_stmt->bind_param("sss", $booking_date, $time_slot, $car_number);
    $check_stmt->execute();
    $check_result = $check_stmt->get_result();
    
    if ($check_result->num_rows > 0) {
        echo "<script>
            alert('该时间段已存在相同车牌号的预约');
            window.history.back();
        </script>";
        $check_stmt->close();
        $conn->close();
        exit;
    }
    $check_stmt->close();
    
    // 插入预约记录
    $status = '待服务'; // 默认为待服务状态
    $create_time = date('Y-m-d H:i:s');
    
    $insert_sql = "INSERT INTO bookings 
                 (customer_name, phone, car_model, car_number, booking_date, time_slot, package_id, notes, status, create_time) 
                 VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
    
    $stmt = $conn->prepare($insert_sql);
    $stmt->bind_param("ssssssssss", $customer_name, $phone, $car_model, $car_number, $booking_date, $time_slot, $package_id, $notes, $status, $create_time);
    
    if ($stmt->execute()) {
        // 预约成功
        $success_message = '预约添加成功！';
        
        // 根据来源决定返回页面
        $redirect_url = $source === 'vip_page' ? 'vip.php' : 'index.php';
        
        echo "<script>
            alert('$success_message');
            window.location.href = '$redirect_url';
        </script>";
    } else {
        // 预约失败
        echo "<script>
            alert('预约添加失败，请稍后重试');
            window.history.back();
        </script>";
    }
    
    // 关闭数据库连接
    $stmt->close();
    $conn->close();
} else {
    // 不是POST请求，重定向到首页
    header('Location: index.php');
    exit;
}