<?php

namespace app\common\middleware;

use think\Response;
use think\Request;

/**
 * 公共跨域中间件
 * 供所有应用共用
 */
class AllowCrossDomain
{
    public function handle(Request $request, \Closure $next): Response
    {
        $origin = $request->header('origin', '');
        
        // 允许所有来源（生产环境建议限制具体域名）
        $header['Access-Control-Allow-Origin'] = $origin ?: '*';
        
        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, X-Current-Domain';
            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, X-Current-Domain';
        
        return $next($request)->header($header);
    }
}