<?php
header('Content-Type: application/json');

// 引用配置，建立数据库连接
require_once 'ApiConfig.php';
$conn = new mysqli(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME);

// 检查连接是否成功
if ($conn->connect_error) {
    die(json_encode(["error" => "数据库连接失败"]));
}

// 接收前端传递的 OpenID
$received_openid = isset($_GET['openid']) ? $_GET['openid'] : null;

if ($received_openid) {
    // 构建 SQL 查询字符串
    $sql = "SELECT * FROM 用户已购课程 WHERE OpenID = '" . $received_openid . "'" . " ORDER BY `购课日期` DESC";

    // 执行查询
    $result = $conn->query($sql);

    // 检查查询结果
    if ($result->num_rows > 0) {
        // 获取查询结果
        $data = array();
        while ($row = $result->fetch_assoc()) {
        $data[] = $row;
    }
        // 将结果转换为 JSON 格式并输出
        echo json_encode(["result" => "拥有课程信息已查询到", "data" => $data]);
    } else {
        echo json_encode(["result" => "拥有课程信息未查询到", "data" => null]);
    }
} else {
    echo json_encode(["error" => "未提供 OpenID"]);
}

// 关闭数据库连接
$conn->close();
?>