<?php

namespace App\Http\Middleware;

use Closure;

class CrossHttp
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
//        $response = $next($request);
//        $response->header('Access-Control-Allow-Origin', '*'); //允许所有资源跨域
//        $response->header('Access-Control-Allow-Headers', 'Origin, Content-Type, Cookie, Accept, Authorization, application/json , X-Auth-Token');//允许通过的响应报头
//        $response->header('Access-Control-Allow-Methods', 'GET, POST, PATCH, PUT, OPTIONS, DELETE');//允许的请求方法
//        $response->header('Access-Control-Expose-Headers', 'Authorization');//允许axios获取响应头中的Authorization
//        $response->header('Allow', 'GET, POST, PATCH, PUT, OPTIONS, delete');//允许的请求方法
//        $response->header('Access-Control-Allow-Credentials', 'true');//运行客户端携带证书式访问
//        return $response;


        $response = $next($request);
        $IlluminateResponse = 'Illuminate\Http\Response';
        $SymfonyResopnse = 'Symfony\Component\HttpFoundation\Response';
        $headers = [
            'Access-Control-Allow-Origin' => '*',
            'Access-Control-Allow-Methods' => 'POST, GET, OPTIONS, PUT, PATCH, DELETE',
            'Access-Control-Allow-Headers' => 'Access-Control-Allow-Headers, Origin,Accept, X-Requested-With, Content-Type, Access-Control-Request-Method, Authorization , Access-Control-Request-Headers, X-CSRF-TOKEN',
        ];
        if ($response instanceof $IlluminateResponse) {
            foreach ($headers as $key => $value) {
                $response->header($key, $value);
            }
            return $response;
        }
        if ($response instanceof $SymfonyResopnse) {
            foreach ($headers as $key => $value) {
                $response->headers->set($key, $value);
            }
            return $response;
        }
        return $response;
    }
}