<?php
/**
 * 企业微信 API 代理
 * 用于 MoviePilot 等应用绕过 IP 白名单限制
 */

// 目标地址
$targetHost = 'https://qyapi.weixin.qq.com';

// 获取请求路径
$uri = $_SERVER['REQUEST_URI'];
$url = $targetHost . $uri;

// 初始化 cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);

// 处理 POST 请求
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $postData = file_get_contents('php://input');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
}

// 转发请求头
$headers = [];
foreach (getallheaders() as $name => $value) {
    $lowerName = strtolower($name);
    // 跳过不需要转发的头
    if (in_array($lowerName, ['host', 'content-length'])) {
        continue;
    }
    $headers[] = "$name: $value";
}
if (!empty($headers)) {
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
}

// 执行请求
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$error = curl_error($ch);
curl_close($ch);

// 错误处理
if ($error) {
    http_response_code(502);
    header('Content-Type: application/json; charset=utf-8');
    echo json_encode(['errcode' => -1, 'errmsg' => 'Proxy error: ' . $error]);
    exit;
}

// 返回响应
http_response_code($httpCode);
header('Content-Type: application/json; charset=utf-8');
echo $response;