<?php

function checkSignature()
{
    if (empty($_GET['echostr'])) {
        return;
    }
    file_put_contents('wx.log', serialize($_GET), FILE_APPEND);

    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
    
    $token = 'hewuwx';
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr, SORT_STRING);
    $tmpStr = implode( $tmpArr );
    $tmpStr = sha1( $tmpStr );

    if( $tmpStr == $signature ){
        echo $_GET['echostr'];
    }else{
        echo 'failed';
    }
    exit;
}

checkSignature();


//微信post的所有数据在一起
// $postStr = $GLOBALS['HTTP_RAW_POST_DATA']
$postStr = file_get_contents('php://input');

if (empty($postStr)) {
    file_put_contents('wx.log', 'post数据为空'.FILE_APPEND."\n", FILE_APPEND);
    return 'post数据为空'."\n";
}


$xml = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);

function replyMsg($content) {
    global $xml;
    $str = sprintf('<xml><ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
    <CreateTime>%d</CreateTime>
    <MsgType><![CDATA[text]]></MsgType>
    <Content><![CDATA[%s]]></Content></xml>',
    $xml->FromUserName,$xml->ToUserName,time(), $content);
    echo $str;
}
function replyArticle($data) {
    global $xml;
    $article = '<ArticleCount>'.count($data).'</ArticleCount>';
    $article .= '<Articles>';
    foreach ($data as $d) {
        $article .= sprintf('<item><Title><![CDATA[%s]]></Title>',$d['title']);
        $article .= sprintf('<Url><![CDATA[%s]]></Url>',$d['url']);
        $article .= sprintf('<PicUrl><![CDATA[%s]]></PicUrl>',$d['picurl']);
        $article .= sprintf('<Description><![CDATA[%s]]></Description></item>',$d['desc']);
    }
    $article .= '</Articles>';

    $str = sprintf('<xml><ToUserName><![CDATA[%s]]></ToUserName>
        <FromUserName><![CDATA[%s]]></FromUserName>
    <CreateTime>%d</CreateTime>
    <MsgType><![CDATA[news]]></MsgType>
    %s</xml>',
    $xml->FromUserName,$xml->ToUserName,time(),$article);
    echo $str;
}






if ($xml->MsgType == 'event') {
    //关注
    if ($xml->Event == 'subscribe') {
        $data = array(
            array('title'=>'photo','url'=>'https://www.baidu.com','picurl'=>'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1490232911&di=09b78688b82d17afefd7ae2f2a11095e&imgtype=jpg&er=1&src=http%3A%2F%2Fimg.9553.com%2Fuploadfile%2F2016%2F0506%2F20160506024135355.jpg','desc'=>'it is a photo'),
            array('title'=>'欢迎关注'),
        );
        replyArticle($data);
    }
}elseif($xml->Content=='天气'){
    require './Curl.php';
    $url = "http://php.weather.sina.com.cn/xml.php?city=%B1%B1%BE%A9&password=DJOYnieT8234jlsK&day=0";
    $content = Curl::CurlGet($url);
    // $xml = simplexml_load_string($content, 'SimpleXMLElement', LIBXML_NOCDATA);
    // $wxml->profiles->city;
    // replyMsg($wxml);
    replyMsg($content);
}else {
    if ($xml->Content == 'p') {
        $data = array(
                        array(
                            'title'=>'photo',
                            'url'=>'http://www.ucai.cn',
                            'picurl'=>'https://ss0.baidu.com/73t1bjeh1BF3odCf/it/u=3891964583,2645622568&fm=96&s=B10F97589A838F031B6B7459030050FC',
                            'desc'=>'it is a photo'
                            ),
                        array(
                            'title'=>'欢迎,照片'
                            ),
                );
                replyArticle($data);
    }
    elseif ($xml->Content == 'photo') {
        replyMsg('see photo');
    }elseif ($xml->Content == '知乎日报') {
       require "./daily.php"; 
       $DetailTitle = Daily::GetDailTitle();
       $data = [];
       foreach ($DetailTitle as $key => $value) {
          $data =[
             'title'=>$value['title'],
             'url'=>"http://www.baidu.com",
             'picurl'=>$value['images'][0],
             'desc'=>$value['title']
          ];
        }
       // replyMsg($GetDailTitle);
       // replyMsg("test");
       replyArticle($data);
    }elseif(mb_substr($xml->Content,0,2,'utf-8')=="电影"){
        $length = mb_strlen($xml->Content,'utf-8');
        if($length>3){
             $movie = mb_substr($xml->Content,2,$length,'utf-8'); 
             require "./SearchMoive.php";
             $result = SearchMovie::GetMovie($movie);
             $data = [];
             foreach ($result as $key => $value) {
                $data =[
                    'title'=>$value['title'],
                    'url'=>"http://www.baidu.com",
                    'picurl'=>$value['url'],
                    'desc'=>$value['desc']
                ];
             }
             replyArticle($data);
        }else{
           replyMsg("请输入格式如：电影大话西游");
        }
    }else{
        require "./Answer.php"; 
        $res =  Answer::GetAnswer($xml->Content);
        $res = json_decode($res,true);
        $res = $res['result']['content'];
        replyMsg($res);
    }
    /*else {
        $uid = md5($xml->FromUserName);
        session_id($uid);
        session_start();
        //上一次输入
        $old_content = $_SESSION['content'];
        //这一次用户的输入
        $_SESSION['content'] = strval($xml->Content);

        replyMsg('now:'.$xml->Content.',last:'.$old_content);
    }*/
}




?>