<?php


class KefuController {

    protected function getRedis($openid)
    {

        $redis_conf = getRedisConfig(crc32($openid));
        $r = new phpcommon\Redis(array(
            'host' => $redis_conf['host'],
            'port' => $redis_conf['port'],
            'passwd' => $redis_conf['passwd']
        ));
        return $r;
    }

    public function checkServer()       // 校验服务器地址URL
    {

        $gameid  = $_REQUEST['gameid'];
        error_log($gameid);
        $config_name = "../config/game$gameid/weixin/config.php";
        require $config_name;
        if ( isset($_REQUEST['echostr'])) {
            $this->valid();
        } else {
            $this->responseMsg();
        }

    }

    public function valid()
    {
        $echoStr = $_REQUEST['echostr'];
        if ($this->checkSignature()) {
            echo $echoStr;
            exit;
        } else {
            echo $echoStr . '+++' . WEIXIN_TOKEN;
            exit;
        }
    }

    private function checkSignature()
    {

        $signature = $_REQUEST["signature"];
        $timestamp = $_REQUEST["timestamp"];
        $nonce = $_REQUEST["nonce"];

        $token = WEIXIN_TOKEN;
        $tmpArr = array ( $token , $timestamp , $nonce );
        sort( $tmpArr , SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1($tmpStr);

        if ( $tmpStr == $signature ){
            return  true ;
        } else {
            return  false ;
        }
    }

    private function disposeText($postArr, $gameid)
    {
        $openid  = $postArr['FromUserName'];
        $toUserName = $postArr['ToUserName'];
        $CreateTime = $postArr['CreateTime'];


    }

    private function disposeImage($postArr, $gameid)
    {
        $openid  = $postArr['FromUserName'];
        $toUserName = $postArr['ToUserName'];
        $CreateTime = $postArr['CreateTime'];


    }

    private function disposeEvent($postArr, $gameid)
    {
        $openid  = $postArr['FromUserName'];
        $toUserName = $postArr['ToUserName'];
        $CreateTime = $postArr['CreateTime'];

        if($postArr['Event'] == 'user_enter_tempsession')
        {
            $content = '您好，有什么能帮助你?' ;
            $data = array (
                "touser"=> $openid,
                "msgtype"=>"text",
                "text"=> array ("content" => $content)
            );
            $postarray = json_encode( $data ,JSON_UNESCAPED_UNICODE);

            //POST发送https请求客服接口api
            $access_token = $this->getAccessToken($openid, $gameid);
            $url = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=$access_token";
            $response = '';
            if (!phpcommon\HttpClient::post($url, $postarray, $response)) {
                phpcommon\sendError(ERR_RETRY, '系统繁忙');
                return;
            }
            $ret_info = json_decode($response, true);
            if ($ret_info['errcode'] == 0) {
                echo(json_encode(array(
                    'errcode' => 0,
                    'errmsg' => ''
                )));
                exit ;
            } else {
                phpcommon\sendError(ERR_RETRY, 'token失败');
                error_log($response);
            }
        }
    }

    public function responseMsg()
    {
        $postStr = $GLOBALS ["HTTP_RAW_POST_DATA" ];
        error_log($postStr);
        if (!empty( $postStr ) && is_string( $postStr )){

            $postArr = json_decode( $postStr , true );
            if (!empty( $postArr ['MsgType']) && $postArr['MsgType'] == 'text'){    // 文本消息

                $this->disposeText($postArr, $gameid);

            } elseif (!empty( $postArr ['MsgType']) && $postArr['MsgType'] == 'image'){ // 图文消息

                $this->disposeImage($postArr, $gameid);

            } elseif (!empty( $postArr ['MsgType']) && $postArr['MsgType'] == 'event' ){ // 进入客服动作
                $this->disposeEvent($postArr, $gameid);

            } else {
                exit ('aaa');
            }
        } else {
            echo "" ;
            exit ;
        }
    }

    public function getAccessToken($openid, $gameid)
    {

        $r = $this->getRedis($openid);
        $access_token = $r->get('weixin_token:' . $gameid . ':' . $openid);
        if (!empty($access_token)) {
            return $access_token;
        }
        else {

            $appid = WEIXIN_APP_ID;
            $appkey = WEICIN_APP_SECRET;
            $url = "https://api.weixin.qq.com/cgi-bin/token?" .
                 "grant_type=client_credential&appid=$appid&secret=$appkey";
            $params = array();
            $response = '';

            if (!phpcommon\HttpClient::get($url, $params, $response)) {
                phpcommon\sendError(ERR_INTERNAL, '系统繁忙');
                return;
            }
            $res = json_decode($response, true);
            if ( $res ) {
                $r->set('weixin_token:' . $gameid . ':' .
                        $openid, $res['access_token']);       //刚获取的token放到redis中
                $r->pexpire('weixin_token:' . $openid, 7150); //微信限制过期时间为两小时
                return $res['access_token'];
            } else {
                phpcommon\sendError(ERR_INTERNAL, '获取access_token失败');
                die;
            }

        }
    }

}