<?php

namespace common\services;

use GuzzleHttp\Client;
use yii\base\Exception;

class WeappService
{
    public $appid = '';
    public $secret = '';
    protected static $guzzleOptions = ['http_errors' => false];

    public $base_url = "https://api.weixin.qq.com";

    public function __construct($config = [])
    {
        if(!\Yii::$app->params['wechat']['app_id'] || !\Yii::$app->params['wechat']['app_secret']){
            throw new Exception('请设置后台小程序配置');
        }
        $this->appid = \Yii::$app->params['wechat']['app_id'];
        $this->secret = \Yii::$app->params['wechat']['app_secret'];
    }

    /**
     * Get a fresh instance of the Guzzle HTTP client.
     *
     * @return \GuzzleHttp\Client
     */
    protected function getHttpClient()
    {
        return new Client(self::$guzzleOptions);
    }

    /**
     * 小程序登录
     * @param $code
     * @return mixed
     * @throws Exception
     */
    public function login($code)
    {
        $response = $this->getHttpClient()->get($this->base_url.'/sns/jscode2session', [
            'query' => array_filter([
                'appid' => $this->appid,
                'secret' => $this->secret,
                'js_code' => $code,
                'grant_type' => 'authorization_code'
            ]),
        ]);
        $result = json_decode($response->getBody(), true);
        if(isset($result['errcode'])){
            throw new Exception($result['errmsg']);
        }
        return $result;
    }
    /**
     * 获取后台接口access_token
     */
    public function getAccessToken()
    {
        $key = 'wechat.common.access_token.'.$this->appid;
        $cache = \Yii::$app->cache;

        $access_token = $cache->get($key);
        if($access_token == false){
            //app.huiliaoyaofang.com
            //job过来的没有HTTP_HOST;
//            if(!isset($_SERVER['HTTP_HOST']) || $_SERVER['HTTP_HOST']!=='app.huiliaoyaofang.com'){
//                $response = $this->getHttpClient()->get('https://app.huiliaoyaofang.com/api/v1/noauth/token');
//                $result = json_decode($response->getBody(), true);
//                $access_token = $result['data']['token'];
//            }else{
            if(!isset($_SERVER['HTTP_HOST'])  || $_SERVER['HTTP_HOST']=='hy.api.ctkj88.com') {
                $response = $this->getHttpClient()->get('http://hy.api.ctkj88.com/service/v1/user/token');
                $result = json_decode($response->getBody(), true);
                $access_token = $result['data']['token'];
            }else{
                $response = $this->getHttpClient()->get($this->base_url.'/cgi-bin/token', [
                    'query' => array_filter([
                        'appid' => $this->appid,
                        'secret' => $this->secret,
                        'grant_type' => 'client_credential'
                    ]),
                ]);
                $result = json_decode($response->getBody(), true);
                if(isset($result['errcode'])){
                    throw new Exception($result['errmsg']);
                }
                $access_token = $result['access_token'];
                $cache->set($key,$access_token,$result['expires_in']-30*60);
            }
        }
        return $access_token;
    }
    /**
     * 获取小程序码
     * @param $scene
     * @return mixed
     * @throws Exception
     */
    public function getQrcode($scene,$page='',$type='base64')
    {
        $data['scene'] = $scene;
        if($page){
            $data['page'] = $page;
        }

        $params = [
            'json' => $data,
        ];

        $response = $this->getHttpClient()->post($this->base_url.'/wxa/getwxacodeunlimit?access_token='.$this->getAccessToken(),$params);

        $body = $response->getBody();
        //\Yii::$app->response->format = \yii\web\Response::FORMAT_RAW;
        try {
            $buffer = $body->getContents();
            if($type=='base64'){
                $type = getimagesizefromstring($buffer)['mime']; //获取二进制流图片格式
                $base64String = 'data:' . $type . ';base64,' . chunk_split(base64_encode($buffer));
//        header('Content-Type: '.getimagesizefromstring($buffer)['mime']);
                return $base64String;
            }else{
                return $buffer;
            }
        }catch (\Exception $exception){
            \Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
            $result = json_decode($response->getBody(), true);
            if(isset($result['errcode'])){
                throw new Exception($result['errmsg']);
            }
        }
    }

}