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<?php
session_start();
include('db.php');
// 检查用户是否已登录
if (!isset($_SESSION['username'])) {
header('Location: index.php');
exit;
}
$username = $_SESSION['username'];
// 获取用户ID
$user_query = "SELECT id FROM users WHERE username='$username'";
$user_result = mysqli_query($conn, $user_query);
$user = mysqli_fetch_assoc($user_result);
$user_id = $user['id'];
if (isset($_POST['equipment_id']) && isset($_POST['start_time']) && isset($_POST['end_time']) && isset($_POST['title']) && isset($_POST['previous_process']) && isset($_POST['purpose'])) {
$equipment_id = $_POST['equipment_id'];
$start_time = $_POST['start_time'];
$end_time = $_POST['end_time'];
$title = $_POST['title'];
$previous_process = $_POST['previous_process'];
$purpose = $_POST['purpose'];
// 检查该时间段是否已被预约
$query = "SELECT * FROM bookings WHERE equipment_id = $equipment_id AND status = 'active' AND
((start_time >= '$start_time' AND start_time < '$end_time')
OR (end_time > '$start_time' AND end_time <= '$end_time'))";
$result = mysqli_query($conn, $query);
if (mysqli_num_rows($result) > 0) {
$_SESSION['error_message'] = "该时间段已被预约，请选择其他时间。";
header('Location: booking.php');
exit;
} else {
// 插入预约记录
$insert_query = "INSERT INTO bookings (user_id, equipment_id, start_time, end_time, title, previous_process, purpose, status, approved) VALUES ('$user_id', '$equipment_id', '$start_time', '$end_time', '$title', '$previous_process', '$purpose', 'active', 0)";
if (mysqli_query($conn, $insert_query)) {
$_SESSION['success_message'] = "预约成功！等待管理员审批。";
header('Location: booking.php');
exit;
} else {
$_SESSION['error_message'] = "预约失败，请重试。";
header('Location: booking.php');
exit;
}
}
}
?>