<?php
namespace app\admin\controller;
use think\Controller;
use app\admin\model\Admin;
use think\captcha\Captcha;
class Login extends Controller
{
    private $cache_model,$system;
    public function initialize(){
        if (session('aid')) {
            $this->redirect('admin/index/index');
        }
        $this->cache_model=array('Module','AuthRule','Category','Posid','Field','System');
        $this->system = cache('System');
        $this->assign('system',$this->system);
        if(empty($this->system)){
            foreach($this->cache_model as $r){
                savecache($r);
            }
        }
    }
    public function index(){
        $code = $_GET["code"];
        $wechat= $_GET["wechat"];
        $weixinInfo = config('weixin_info');
        $appid = $weixinInfo['appid'];
        $appsecret = $weixinInfo['appSecret'];
        $wxInfo = [];
        if($wechat && !$code){
            $redirect_uri = urlencode ( 'http://jm.ilixo.com/admin/login/index?wechat='.$wechat );//将字符串以 URL 编码。
            $url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&
    response_type=code&scope=snsapi_userinfo&state=1#wechat_redirect";
            header("Location:".$url);//header() 函数向客户端发送原始的 HTTP 报头。
        }else if($wechat && $code){
            //Get access_token
            $access_token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$appid}&secret={$appsecret}&code={$code}&grant_type=authorization_code";
            $access_token_json = $this->https_request($access_token_url);//自定义函数
            $access_token_array = json_decode($access_token_json,true);//对 JSON 格式的字符串进行解码，转换为 PHP 变量，自带函数
            //获取access_token
            $access_token = $access_token_array['access_token'];//获取access_token对应的值
            //获取openid
            $openid = $access_token_array['openid'];//获取openid对应的值
            //Get user info
            $userinfo_url = "https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN";
            $userinfo_json = $this->https_request($userinfo_url);
            $wxInfo = json_decode($userinfo_json,ture);
        }


        if(request()->isPost()) {
            $data = input('post.');
            $admin = new Admin();
            $return = $admin->login($data,$this->system['code'],$wxInfo);
            return ['code' => $return['code'], 'msg' => $return['msg']];
        }else{

            return $this->fetch();
        }
    }

    public function https_request($url)//自定义函数,访问url返回结果
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl,  CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $data = curl_exec($curl);
        if (curl_errno($curl)){
            return 'ERROR'.curl_error($curl);
        }
        curl_close($curl);
        return $data;
    }

    public function verify(){
        $config =    [
            // 验证码字体大小
            'fontSize'    =>    25,
            // 验证码位数
            'length'      =>    4,
            // 关闭验证码杂点
            'useNoise'    =>    false,
            'bg'          =>    [255,255,255],
        ];
        $captcha = new Captcha($config);
        return $captcha->entry();
    }
}