<?php

namespace App\Http\Middleware;

use Agent;
use App\Components\IP;
use Closure;
use Illuminate\Http\Request;
use Log;
use Response;

class isForbidden
{

    /**
     * 限制机器人、指定IP访问
     *
     * @param  Request  $request
     * @param  Closure  $next
     *
     * @return mixed
     */
    public function handle(Request $request, Closure $next)
    {
        // 拒绝机器人访问
        if (sysConfig('is_forbid_robot') && Agent::isRobot()) {
            Log::info("识别到机器人访问(" . IP::getClientIp() . ")");

            return Response::view(
                'auth.error',
                ['message' => trans('error.ForbiddenRobot')],
                403
            );
        }

        // 拒绝通过订阅链接域名访问网站，防止网站被探测
        if (false !== strpos(sysConfig('subscribe_domain'), $request->getHost())
            && ! str_contains(
                sysConfig('subscribe_domain'),
                sysConfig('website_url')
            )) {
            Log::info("识别到通过订阅链接访问，强制跳转至百度(" . IP::getClientIp() . ")");

            return redirect('https://www.baidu.com');
        }

        $ip         = IP::getClientIP();
        $ipLocation = IP::getIPInfo($ip);

        // 拒绝无IP请求
        if ( ! $ipLocation || empty(array_filter($ipLocation))) {
            return Response::view(
                'auth.error',
                ['message' => trans('error.ForbiddenAccess')],
                403
            );
        }

        if ( ! in_array($ipLocation['country'], ['本机地址', '局域网'])) {
            // 拒绝大陆IP访问
            if (sysConfig('is_forbid_china') &&
                in_array($ipLocation['country'], ['China', '中国']) &&
                ! in_array(
                    $ipLocation['province'],
                    ['香港', '澳门', '台湾', '台湾省']
                )) {
                Log::info('识别到大陆IP，拒绝访问：' . $ip);

                return Response::view(
                    'auth.error',
                    [
                        'message' => trans(
                            'error.ForbiddenChina'
                        ),
                    ],
                    403
                );
            }

            // 拒绝非大陆IP访问
            if (sysConfig('is_forbid_oversea')
                && ! in_array(
                    $ipLocation['country'],
                    ['China', '中国', 'Taiwan', 'Hong Kong', 'Macao']
                )) {
                Log::info(
                    '识别到海外IP，拒绝访问：' . $ip . ' - ' . $ipLocation['country']
                );

                return Response::view(
                    'auth.error',
                    [
                        'message' => trans(
                            'error.ForbiddenOversea'
                        ),
                    ],
                    403
                );
            }
        }

        return $next($request);
    }

}