<?php

namespace app\admin\middleware;

use think\Response;
use think\Request;

/**
 * 自定义跨域中间件
 * 解决 AJAX 请求 Cookie 传递问题
 */
class CustomCors
{
    public function handle(Request $request, \Closure $next): Response
    {
        $origin = $request->header('origin', '');
        
        // 允许的域名列表（根据实际情况修改）
        $allowedDomains = [
            'http://localhost:3000',
            'http://localhost:8000',
            'http://127.0.0.1:3000',
            'http://127.0.0.1:8000',
            'http://backapi.yunzer.cn',
            'http://localhost:5173',
            'http://www.yunzer.cn',
            'https://www.yunzer.cn',
            'http://yunzer.cn',
            'https://yunzer.cn',
        ];
        
        // 检查是否为允许的域名
        if (in_array($origin, $allowedDomains)) {
            $header['Access-Control-Allow-Origin'] = $origin;
        } else {
            // 对于同源请求，允许当前域名
            if (!empty($origin)) {
                $header['Access-Control-Allow-Origin'] = $origin;
            } else {
                $header['Access-Control-Allow-Origin'] = '*';
            }
        }
        
        // 处理 OPTIONS 预检请求，直接返回
        if ($request->method() === 'OPTIONS') {
            $header['Access-Control-Allow-Credentials'] = 'true';
            $header['Access-Control-Max-Age'] = 1800;
            $header['Access-Control-Allow-Methods'] = 'GET, POST, PATCH, PUT, DELETE, OPTIONS';
            $header['Access-Control-Allow-Headers'] = 'Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-CSRF-TOKEN, X-Requested-With';
            \think\facade\Log::record('CORS OPTIONS preflight for: ' . $origin);
            return response('', 200, $header);
        }
        
        $header['Access-Control-Allow-Credentials'] = 'true';
        $header['Access-Control-Max-Age'] = 1800;
        $header['Access-Control-Allow-Methods'] = 'GET, POST, PATCH, PUT, DELETE, OPTIONS';
        $header['Access-Control-Allow-Headers'] = 'Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-CSRF-TOKEN, X-Requested-With';
        
        return $next($request)->header($header);
    }
}