<?php

namespace app\index\controller;

use DOMDocument;
use wx\offiaccount\msg\ResponseMsg;
use wx\work\callback\WXBizMsgCrypt;
use think\helper\Str;
class work
{
    /**
     * 应用
     * 接收消息
     */
    public function index()
    {
        $token = '9IgAfTZY34mA';
        $encodingAesKey = '92ccGXDDZE3eE1ws1XrAvyP3VLrB9PCPHbrwB8jz5QM';
        $corpId = 'wwf5d2dea0a059ab7a';
        $wxcpt = new WXBizMsgCrypt($token, $encodingAesKey, $corpId);

        $request = request();
        if ($request->isGet()) {
            // return $this->verifyURL($wxcpt);
            echo $this->verifyURL($wxcpt);
            exit;
        }

        if ($request->isPost()) {
            // return $this->decryptMsg($wxcpt);
            echo $this->decryptMsg($wxcpt);
            exit;
        }
    }

    /**
     * 企业微信检测url
     */
    private function verifyURL(WXBizMsgCrypt $wxcpt)
    {
        $sVerifyMsgSig = $_GET['msg_signature'];
        $sVerifyTimeStamp = $_GET['timestamp'];
        $sVerifyNonce = $_GET['nonce'];
        $sVerifyEchoStr = $_GET["echostr"];


        // token验证
        $errCode = $wxcpt->VerifyURL($sVerifyMsgSig, $sVerifyTimeStamp, $sVerifyNonce, $sVerifyEchoStr, $sEchoStr);
        if ($errCode == 0) {
            return $sEchoStr;
        } else {
            trace("ERR: " . $errCode, 'error');
        }
    }

    private function decryptMsg(WXBizMsgCrypt $wxcpt)
    {
        $sMsgSignature = $_GET['msg_signature'];
        $sTimeStamp = $_GET['timestamp'];
        $sNonce = $_GET['nonce'];
        $sPostData = file_get_contents('php://input');
        trace('postxml:' . $sPostData);
        $errCode = $wxcpt->DecryptMsg($sMsgSignature, $sTimeStamp, $sNonce, $sPostData, $sMsg);
        if ($errCode == 0) {
            $xml = new DOMDocument();
            $xml->loadXML($sMsg);
            $msgType = $xml->getElementsByTagName('MsgType')->item(0)->nodeValue;

            if (method_exists($this, $msgType)) {
                return $this->$msgType($wxcpt, $xml);
            }
        } else {
            trace("ERR: " . $errCode, 'error');
        }
    }

    /**
     * 文本消息
     */
    private function text(WXBizMsgCrypt $wxcpt, $xml)
    {
        $postMsg = $xml->getElementsByTagName('Content')->item(0)->nodeValue;
        
        // 根据话术获取固定内容(分词查找内容)
        

        $fromUserName = $xml->getElementsByTagName('FromUserName')->item(0)->nodeValue;
        $toUserName = $xml->getElementsByTagName('ToUserName')->item(0)->nodeValue;
        $textData = [
            'ToUserName' => $fromUserName,
            'FromUserName' => $toUserName,
            'MsgType' => 'text',
            'Content' => '小爱还不知道你说的是什么意思，正在学习中。。。'
        ];
        $msg = new ResponseMsg();
        $sRespData = $msg->responseText($textData);


        $errCode = $wxcpt->EncryptMsg($sRespData, $_GET['timestamp'], $_GET['nonce'], $sEncryptMsg);
        if ($errCode == 0) {
            return $sEncryptMsg;
        } else {
            trace("ERR: " . $errCode, 'error');
        }
    }

    /**
     * 事件消息
     */
    private function event(WXBizMsgCrypt $wxcpt, $xml)
    {
        $event = $xml->getElementsByTagName('Event')->item(0)->nodeValue;
        $event = Str::camel($event).'Event';
        if (method_exists($this, $event)) {
            return $this->$event($wxcpt, $xml);
        }
    }

    /**
     * 用户进入应用事件（该事件在员工进入到该应用中时会一直有）
     */
    private function enterAgentEvent(WXBizMsgCrypt $wxcpt, $xml)
    {
        // $fromUserName = $xml->getElementsByTagName('FromUserName')->item(0)->nodeValue;
        // // 更新用户是否关注公众号

        // $toUserName = $xml->getElementsByTagName('ToUserName')->item(0)->nodeValue;
        // $textData = [
        //     'ToUserName' => $fromUserName,
        //     'FromUserName' => $toUserName,
        //     'MsgType' => 'text',
        //     'Content' => '欢迎进入志远装饰营销数字化系统'
        // ];
        // $msg = new ResponseMsg();
        // $sRespData = $msg->responseText($textData);

        // $errCode = $wxcpt->EncryptMsg($sRespData, $_GET['timestamp'], $_GET['nonce'], $sEncryptMsg);
        // if ($errCode == 0) {
        //     return $sEncryptMsg;
        // } else {
        //     trace("ERR: " . $errCode, 'error');
        // }
    }
}