<?php
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace app\admin\middleware;

use Closure;
use think\Config;
use think\Request;
use think\Response;
use Firebase\JWT\Key;
use Firebase\JWT\JWT;
/**
 * 跨域请求支持
 */
class AllowCrossDomain
{
    protected $cookieDomain;
		protected $jwtOpen;
		protected $jwtSalt;
    protected $header = [
        'Access-Control-Allow-Origin'       =>'*',
        // 'Access-Control-Allow-Origin'       =>'127.0.0.1',
        'Access-Control-Allow-Credentials'  => 'true',
        'Access-Control-Max-Age'            => 1800,
        'Access-Control-Allow-Methods'      => 'GET, POST, PATCH, PUT, DELETE',
        'Access-Control-Allow-Headers'      => 'Accept,token, Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-CSRF-TOKEN, X-Requested-With',
    ];
    public function __construct(Config $config)
    {
        $this->cookieDomain = $config->get('cookie.domain', '');
        $this->jwtOpen = $config->get('develop.jwt_open', '');
        $this->jwtSalt = $config->get('develop.jwt_salt', '');
    }
    /**
     * 允许跨域请求
     * @access public
     * @param array
     * @param Closure $next
     * @param array   $header
     * @return Response
     */
    public function handle($request, Closure $next, ? array $header = [])
    {
        $header = !empty($header) ? array_merge($this->header, $header) : $this->header;
        if (!isset($header['Access-Control-Allow-Origin'])) {
            $origin = $request->header('origin');
            if ($origin && ('' == $this->cookieDomain || strpos($origin, $this->cookieDomain))) {
                $header['Access-Control-Allow-Origin'] = $origin;
            } else {
                $header['Access-Control-Allow-Origin'] = '*';
            }
        }
				if($this->jwtOpen && $request->isPost()){
					$input = $request->getInput();
					$input = str_replace("\"",'',$input);
					if(count(explode('.',$input))==3){
						$input = $request->param('jwtData');
						$salt = hash('sha256',$this->jwtSalt);
						$data = JWT::decode($input, new Key($salt, 'HS256'),array('HS256'));
						$data = json_decode(json_encode($data,JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),true);
					}
				}elseif($request->isGet()){
					$input = $request->get();
					$data = $input;
				}else{
					$input = $request->getInput();
					$data = !empty($input)?json_decode($input,true):[];
				}
				if(!empty($data)){
					if($request->isPost()){
						$request->withPost($data);
					}elseif($request->isGet()){
						$request->withGet($data);
					}
				}
        return $next($request)->header($header);
    }
}