<?php

namespace app\common\library;

use think\Db;
/**
 * 微信类
 */
class Wechatshare
{
    private $appid = '';        //开发者ID(AppID)
    private $appsecret = '';    //开发者密码(AppSecret)

    /**
     * 初始化
     */
    public function __construct()
    {
        //读取微信配置
        $configValue = config('wxgzh');
        $this->appid = $configValue['app_id'];
        $this->appsecret = $configValue['app_secret'];
    }

    public function getSignPackage($url) {
        $jsapiTicket = $this->getWechatJsApiTicket();

        // 注意 URL 一定要动态获取，不能 hardcode.
//    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
//    $url = $this->url?$this->url:"$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
        $timestamp = time();
        $nonceStr = $this->getRandString(16);

        // 这里参数的顺序要按照 key 值 ASCII 码升序排序
        $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";

        $signature = sha1($string);

        $signPackage = array(
            "appId"     => $this->appid,
            "nonceStr"  => $nonceStr,
            "timestamp" => $timestamp,
            "url"       => $url,
            "signature" => $signature,
            "rawString" => $string
        );
        return $signPackage;
    }

    /**
     * 获取微信基础access_token
     * @param bool $updatenow 是否立即刷新
     * @return string
     */
    public function getWechatBasicAccesstoken($updatenow = false)
    {
        //有效期一般为7200秒，开发者必须在自己的服务全局缓存access_token
        //此处保存的access_token为基础的，并非授权的(授权的需要实时获取)

        //读取缓存
        $access_token = cache('access_token');

        //过期或强制刷新时，需重新请求
        if(!$access_token || $updatenow) {
            $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$this->appid.'&secret='.$this->appsecret), true);
            if(!empty($rs['errmsg'])) {
                abort(500, $rs['errmsg']); //请求失败
            }

            //缓存存储
            $access_token = $rs['access_token'];
            cache('access_token', $access_token, $rs['expires_in'] - 1000);
        }

        return $access_token;
    }

    /**
     * 获取微信jsapi_ticket
     * @param string $updatenow 是否立即更新
     * @return string
     */
    private function getWechatJsApiTicket($updatenow = false)
    {
        //有效期7200秒，开发者必须在自己的服务全局缓存jsapi_ticket

        //读取缓存
        $ticket = cache('jsapi_ticket');

        //过期或强制刷新时，需重新请求
        if(!$ticket || $updatenow) {
            //读取access_token
            $access_token = $this->getWechatBasicAccesstoken();

            //请求ticket
            $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
            if($rs['errmsg'] != 'ok') { //失败时，强制刷新access_token，再次请求
                $access_token = $this->getWechatBasicAccesstoken(true);
                $rs = json_decode(curl_get('https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token='.$access_token.'&type=jsapi'), true);
                if($rs['errmsg'] != 'ok') {
                    abort(500, $rs['errmsg']); //请求失败
                }
            }

            //缓存存储
            $ticket = $rs['ticket'];
            cache('jsapi_ticket', $ticket, $rs['expires_in'] - 1000);
        }

        return $ticket;
    }

    /**
     * 获取随机字符串
     * @param int $length 字符串长度
     * @return null|string
     */
    private function getRandString($length = 1)
    {
        $str = null;
        $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
        $max = strlen($strPol) - 1;
        for($i = 0; $i < $length; $i++) {
            $str .= $strPol[rand(0, $max)];
        }
        return $str;
    }


    /**
     * 获取微信分享配置
     * @param integer $return_arr 是否返回数组格式
     * @param string $url 分享地址
     * @return string
     */
    public function getShareConfig($return_arr = 0, $url = '')
    {
        //时间戳
        $wx_timestamp = systemTime();
        //随机字符串
        $wx_nonceStr = $this->getRandString('16');
        //签名
        $json_jsapi_ticket = $this->getWechatJsApiTicket();
        //$url = $url ?: HTTP_TYPE.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
        //$url_arr = explode('#', $url);
        //$url = $url_arr[0] ?? '';
        $url = request()->domain().'/wap/';
        $wx_signature = sha1('jsapi_ticket='.$json_jsapi_ticket.'&noncestr='.$wx_nonceStr.'&timestamp='.$wx_timestamp.'&url='.$url.'');
        //接口列表
        $jsApiList = ['updateAppMessageShareData','updateTimelineShareData ','onMenuShareWeibo','openAddress','onMenuShareTimeline','onMenuShareAppMessage','onMenuShareQQ'];

        if($return_arr) {
            $rt = [];
            $rt['appId'] = $this->appid;
            $rt['timestamp'] = $wx_timestamp;
            $rt['nonceStr'] = $wx_nonceStr;
            $rt['signature'] = $wx_signature;
            $rt['jsApiList'] = $jsApiList;
            return $rt;
        } else {
            $jsApiList = json_encode($jsApiList);
            return "<script src='".HTTP_TYPE."res.wx.qq.com/open/js/jweixin-1.4.0.js'></script>
                <script>
                    wx.config({
                        debug: false, //开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
                        appId: '".$this->appid."', // 必填，公众号的唯一标识
                        timestamp: ".$wx_timestamp.", // 必填，生成签名的时间戳
                        nonceStr: '".$wx_nonceStr."', // 必填，生成签名的随机串
                        signature: '".$wx_signature."',// 必填，签名，见附录1
                        jsApiList: $jsApiList // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
                    });
                </script>";
        }
    }


    /**
     * 设置公众号的模板消息所在行业(IT科技-互联网|电子商务, IT科技-IT软件与服务)
     * @return array
     */
    public function setWxTplMsgIndustry()
    {
        $rt = ['status' => false, 'msg' => ''];

        //获取基础token
        $basic_token = $this->getWechatBasicAccesstoken(true);

        //获取当前行业
        $url = 'https://api.weixin.qq.com/cgi-bin/template/get_industry?access_token='.$basic_token;
        $industry_cur = curl_get($url);
        $industry_cur = json_decode($industry_cur, true);
        if($industry_cur) {
            //是否是正确的行业
            $is_valid = true;
            foreach($industry_cur as $_k => $_industry) {
                if($_industry['first_class'] !== 'IT科技' || !in_array($_industry['second_class'], ['互联网|电子商务', 'IT软件与服务'])) {
                    $is_valid = false;
                }
            }
            if(!$is_valid) {
                //不正确要改行业
                $url = 'https://api.weixin.qq.com/cgi-bin/template/api_set_industry?access_token='.$basic_token;
                $data = [];
                $data['industry_id1'] = 1; //IT科技 互联网|电子商务
                $data['industry_id2'] = 2; //IT科技 IT软件与服务
                $rs = curl_post($url, json_encode($data));
                $rs = json_decode($rs, true);
                if(!empty($rs['errcode'])) {
                    $rt['msg'] = $rs['errmsg'];
                    return $rt;
                }
            }
        }

        $rt['status'] = true;
        return $rt;
    }


    /**
     * 获取微信消息模板配置
     * @param string $key 微信消息模板ID
     * @return array
     */
    public function getWxMsgTplConf($key = '')
    {
        //获取基础token
        $basic_token = $this->getWechatBasicAccesstoken(true);
        //请求微信消息模板列表
        $url = 'https://api.weixin.qq.com/cgi-bin/template/get_all_private_template?access_token='.$basic_token;
        $rs = curl_get($url);
        $rs = json_decode($rs, true);
        if(!empty($rs['template_list'])) {
            $rs = $rs['template_list'];
            if($key) {
                //若指定模板
                foreach($rs as $_k => $_v) {
                    if($_v['template_id'] === $key) {
                        $rt = $rs[$_k];
                        break;
                    }
                }
            } else {
                //返回所有模板
                $rt = $rs;
            }
        }
        return $rt ?? [];
    }
}