<?php
/**
 * Created by PhpStorm.
 * User: kang www.lmlm.cn
 * Date: 2015/11/14
 * Time: 0:21
 */
namespace common\library;

use Yii;
use yii\base\Object;
use yii\web\Cookie;

/**
 * 微信处理类
 * Class WeChat
 * @package common\libary
 */
class WeChat extends Object{

    public function init(){
//        define("TOKEN",Yii::$app->params['wechat']['token']);
    }
    /**
     * 微信接口配置响，应ToKen验证
     * @throws Exception
     */
    public function checkToken(){
        //$echoStr = $_GET["echostr"];
        $echoStr = Yii::$app->request->get('echostr');
        if($this->checkSignature()){
            echo $echoStr;
        }
    }


    /**
     *  根据access_token. 获取用户信息。
     * @param $accessObj
     * @return jsonObj
     */
    public function getUserInfo($accessObj){
//        $accessObj = $this->getAccess_token($code);

//        var_dump(isset($accessObj));
        //https://api.weixin.qq.com/cgi-bin/user/info?access_token=$token&openid=$openid

        $url = "https://api.weixin.qq.com/sns/userinfo";
        $url .="?access_token=".$accessObj->access_token;
        $url .="&openid=".$accessObj->openid;
        $url .= "&lang=zh_CN";
        $userjson = $this->getHtml($url);
        $userObj = json_decode($userjson);

//        设置cookie
//        $cookies = Yii::$app->response->cookies;
//        $cookies->add(new Cookie(['name'=>'personinfo','value'=>$userObj->openid]));

        return $userObj;
    }
    public function getUserInfo1(){
//        $accessObj = $this->getAccess_token($code);

//        var_dump(isset($accessObj));
        //https://api.weixin.qq.com/cgi-bin/user/info?access_token=$token&openid=$openid

//        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=". Yii::$app->params['wechat']['appID'];
        $url ="https://open.weixin.qq.com/connect/qrconnect?appid=". Yii::$app->params['wechat']['appID']."&redirect_uri=http://www.baidu.com&response_type=code&scope=snsapi_login&state=2014#wechat_redirect";
        $userjson = $this->getHtml($url);
        $userObj = json_decode($userjson);
//        设置cookie
//        $cookies = Yii::$app->response->cookies;
//        $cookies->add(new Cookie(['name'=>'personinfo','value'=>$userObj->openid]));

        return $userObj;
    }

    /**
     * $code获取小程序用户openid,unionid
     * @return mixed
     */
    public function getApiSns($code){
        $url = "https://api.weixin.qq.com/sns/jscode2session?appid=".Yii::$app->params['wechatapi']['appid']."&secret=".Yii::$app->params['wechatapi']['secret']."&js_code=".$code."&grant_type=authorization_code";
        $userjson = $this->getHtml($url);
        $userObj = json_decode($userjson);
        return $userObj;
    }


    /**
     * 未关注公众号时，返回关注状态和openid
     * 有关注公众号时，返回用户基本信息和关注状态
     * @param $token
     * @param $openid
     * @return mixed
     */
    public function getUser($token,$openid){
        $url = "https://api.weixin.qq.com/cgi-bin/user/info";
        $url .="?access_token=".$token;
        $url .="&openid=".$openid;
        $url .= "&lang=zh_CN";
        $userjson = $this->getHtml($url);
        $userObj = json_decode($userjson);

        return $userObj;
    }

    /**
     * 拉取关注用户列表
     * @param $token
     * @param $openid
     * @return mixed
     */
    public function Userlist($token,$openid){
        $url = 'https://api.weixin.qq.com/cgi-bin/user/get';
        $url .="?access_token=".$token;
        $url .="&next_openid=".$openid;
        $userjson = $this->getHtml($url);
        $userObj = json_decode($userjson);

        return $userObj;
    }

    /**
     * 验证ToKen
     * @return bool
     * @throws Exception
     */
    public function checkSignature()
    {
        $signature = Yii::$app->request->get("signature");
        $timestamp = Yii::$app->request->get("timestamp");
        $nonce = Yii::$app->request->get("nonce");
        $token = Yii::$app->params['wechat']['token'];
        $tmpArr = array($token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );
        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }


    /**
     * 获取授权用户信息 第一步。
     * 生成授权URL.
     * 用户访问URL,授权后，跳转domain.com?code=CODE&state=100
     * 1.CODE可用于获取用户access_token 并获取用户信息
     * @param $redurl 跳转URL
     * @param bool $scope 授权作用域(默认snsapi_userinfo)
     * @param int $state 设置状态(默认100)
     * @return string
     */
    public function markUrl($redurl,$scope=false,$state=100){
        $url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid='.Yii::$app->params['wechat']['appID'];
        $url .="&redirect_uri=".urlencode($redurl);
        $url .= "&response_type=code";
        $url .= "&scope=".($scope?'snsapi_base':'snsapi_userinfo');
        $url .= "&state=".$state;
        $url .= "#wechat_redirect";
        return $url;
    }


    /**
     * 获取授权用户信息。第二步，
     * 通过code换取网页授权access_token
     * @param $code 授权Code
     * @return string 返回
     */
    public function getAccess_token($code){
        $getUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".Yii::$app->params['wechat']['appID'];
        $getUrl .= "&secret=".Yii::$app->params['wechat']['appsecret'];
        $getUrl .= "&code=$code&grant_type=authorization_code";
        $resultJson = $this->getHtml($getUrl);
        $results = json_decode($resultJson);
        if(isset($results->openid) && isset($results->access_token)){
            $cookies = Yii::$app->response->cookies;
            $cookies->add(new Cookie(['name'=>'acc_openid','value'=>$results->openid]));
//            $cookies->add(new Cookie(['name'=>'accesstoken','value'=>$results->access_token]));
           // Yii::$app->cache->set('acc_openid',$results->openid,60*60);
            Yii::$app->cache->set('access_token',$results->openid,60*60);
        }else{
            return false;
        }

        return $results;
    }


    /**
     * 获取授权用户信息 刷新TOKEN
     * @param $refresh_token
     */
    private function refresh_Token($refresh_token){
        $url = 'https://api.weixin.qq.com/sns/oauth2/refresh_token?appid='.Yii::$app->params['wechat']['appID'];
        $url .= "&grant_type=refresh_token&refresh_token=$refresh_token";

//        Yii::$app->cache->set('token',$refresh_token);
//        Yii::$app->cache->set('refresh_time',time());
    }

    /**
     * 生成签名  JS 库中使用
     * @param $noncestr 随机数
     * @param $timestamp 时间戳
     * @param $url 当前页面的URL
     * @return signature 签名
     */
    public function getsignature($noncestr,$timestamp,$url){
        //$access_token = Yii::$app->request->cookies->getValue('access_token');
        $access_token = Yii::$app->cache->get('access_token');
        if(empty($access_token)){
            $access_token = $this->gzAccess_token();
//            $array_data = ['name'=>'access_token','expire'=>time()+3600,'value'=>$access_token];
//            Yii::$app->response->cookies->add(new Cookie($array_data));
//            Yii::$app->response->cookies->add(new Cookie(['name'=>'jsapi_ticket','value'=>'']));
            Yii::$app->cache->set('access_token',$access_token,60*60);
            Yii::$app->cache->set('jsapi_ticket',"");

        }
        $ticket = Yii::$app->request->cookies->getValue('jsapi_ticket');
        if(empty($ticket)){
            $ticket = $this->getjsapi_ticket($access_token);
//            $array_data = ['name'=>'jsapi_ticket','expire'=>time()+3600,'value'=>$ticket];
//            Yii::$app->response->cookies->add(new Cookie($array_data));
            Yii::$app->cache->set('jsapi_ticket',$ticket,60*60);
        }
        $string1 = "jsapi_ticket=$ticket&noncestr=$noncestr&timestamp=$timestamp&url=$url";
        $signature = sha1($string1);

        return $signature;
    }

    public function getTicket()
    {
        //$access_token = Yii::$app->request->cookies->getValue('access_token');
        $access_token = Yii::$app->cache->get('access_token');
        if(empty($access_token)){
            $access_token = $this->gzAccess_token();
//            $array_data = ['name'=>'access_token','expire'=>time()+3600,'value'=>$access_token];
//            Yii::$app->response->cookies->add(new Cookie($array_data));
//            Yii::$app->response->cookies->add(new Cookie(['name'=>'jsapi_ticket','value'=>'']));
            Yii::$app->cache->set('access_token',$access_token,60*60);
            Yii::$app->cache->set('jsapi_ticket',"");
        }
        //$ticket = Yii::$app->request->cookies->getValue('jsapi_ticket');
        $ticket = Yii::$app->cache->get('jsapi_ticket');
        if(empty($ticket)){
            $ticket = $this->getjsapi_ticket($access_token);
//            $array_data = ['name'=>'jsapi_ticket','expire'=>time()+3600,'value'=>$ticket];
//            Yii::$app->response->cookies->add(new Cookie($array_data));
            Yii::$app->cache->set('jsapi_ticket',$ticket,60*60);
        }
        return $ticket;
    }

    public function getsignature2($noncestr,$timestamp,$url){
        $access_token = Yii::$app->request->cookies->getValue('access_token');
       // Yii::$app->response->send();
        if(empty($access_token)){
            $access_token = $this->gzAccess_token();
            $array_data = ['name'=>'access_token','expire'=>time()+3600,'value'=>$access_token];
            Yii::$app->response->cookies->add(new Cookie($array_data));
            Yii::$app->response->cookies->add(new Cookie(['name'=>'jsapi_ticket','value'=>'']));
//            $ticket = $this->getjsapi_ticket($access_token);
//            $array_data = ['name'=>'jsapi_ticket','expire'=>time()+3600,'value'=>$ticket];
//            Yii::$app->response->cookies->add(new Cookie($array_data));
        }
        $ticket = Yii::$app->request->cookies->getValue('jsapi_ticket');
        if(empty($ticket)){
            $ticket = $this->getjsapi_ticket($access_token);
            $array_data = ['name'=>'jsapi_ticket','expire'=>time()+3600,'value'=>$ticket];
            Yii::$app->response->cookies->add(new Cookie($array_data));
        }
        $string1 = "jsapi_ticket=$ticket&noncestr=$noncestr&timestamp=$timestamp&url=$url";
        $signature = sha1($string1);

        return $signature;
    }

    /**
     * 获取Access_token
     * 有获取次数限制
     */
    public function gzAccess_token(){
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".Yii::$app->params['wechat']['appID']."&secret=".Yii::$app->params['wechat']['appsecret'];
        $resultJson = $this->https_request($url);
        $results = json_decode($resultJson);
        return $results->access_token;
    }

    /**
     * 获取jsapi_ticket
     */
    protected function getjsapi_ticket($access_token){
        $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=$access_token&type=jsapi";
        $resultJson = $this->https_request($url);

        $results = json_decode($resultJson);
        if(!isset($results->ticket)){
            Yii::$app->cache->set('access_token','');
            return '';
        }
        return $results->ticket;
    }


    protected function getHtml($url){
        $ch = curl_init();
        $timeout = 5;
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }

    /**
     * 判断返回值是为正确的。
     * @param $result 返回值转json
     * @return bool
     */
    public function isSuccess($result){
        if(isset($result->errors)){
            return false;
        }
        return true;
    }

    /**
     *
     * 是否微信浏览器
     */
    public function isWecha()
    {
        $user_agent = $_SERVER['HTTP_USER_AGENT'];
        if (strpos($user_agent, 'MicroMessenger') === false) {
            return false;
        }
        return true;
    }

    public function https_request($url, $data = NULL) {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);

        if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }

}