<?php
namespace app\user\controller;
use think\Controller;
use think\Session;
use think\Db;
use think\Request;

//微信訊息接收





class Wx extends Controller
{
    public function ts()   //微信推送
    {
        define("TOKEN", "wwwzzkyecom");   //定義TOKEN祕鑰
        $wechatObj = new wechatCallbackapiTest();
        ob_clean();     //這句才是重點
        if (isset($_GET['echostr'])) {
          $wechatObj->valid();
        }else{
          $wechatObj->responseMsg();
        }
    }
    //====================================================
    public function curlPost($url,$data=''){
        $curl = curl_init();
        curl_setopt($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);
        $result = json_decode($output,true);
        return $result;
    }
    public function curlGet($url,$header=FALSE){
        $curl = curl_init($url);
        curl_setopt($curl,CURLOPT_HTTPGET,true);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST,FALSE);
        curl_setopt($curl, CURLOPT_HEADER, FALSE);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
//        curl_setopt($curl, CURLOPT_HEADER,false);  //當需要接收表頭時將此項開啟;並將結果轉換為陣列的的處理關閉;
//        curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
//        curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 5);
        $res = curl_exec($curl);
        curl_close($curl);
        if($header==FALSE){
            $result = json_decode($res,true);
            return $result;
        }else{
            return $res;
        }
        
//        return $res;
    }
    //=======================================
}

//=================================================================
//定義類檔案
class wechatCallbackapiTest
{
  public function valid()
  {
    $echoStr = $_GET["echostr"];
    if($this->checkSignature()){
      echo $echoStr;
      exit;
    }
  }
  private function checkSignature()
  {
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
    $token = TOKEN;
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr);
    $tmpStr = implode( $tmpArr );
    $tmpStr = sha1( $tmpStr );
    if( $tmpStr == $signature ){
      return true;
    }else{
      return false;
    }
  }
  public function responseMsg()
  {
    $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
    if (!emptyempty($postStr)){
      $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
      $fromUsername = $postObj->FromUserName;
      $toUsername = $postObj->ToUserName;
      $keyword = trim($postObj->Content);
      $time = time();
      $textTpl = "<xml>
            <ToUserName><![CDATA[%s]]></ToUserName>
            <FromUserName><![CDATA[%s]]></FromUserName>
            <CreateTime>%s</CreateTime>
            <MsgType><![CDATA[%s]]></MsgType>
            <Content><![CDATA[%s]]></Content>
            <FuncFlag>0</FuncFlag>
            </xml>";
      if($keyword != " " || !emptyempty( $keyword ) )
      {
  $msgType = "text";
  //$contentStr .= date("Y-m-d H:i:s",time());
  $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
  echo $resultStr;
      }
    }else{
      echo "";
      exit;
    }
  }
}