微信网页授权

<?php

namespace Ebox\Controllers;
use Glar\Http\Controllers\Controller;
use Common\Models\User;
use Cache;

class WechatController extends Controller
{

    private $appid = '***************';
    private $appsecret = '************';
    private $token = '************';

    /**
     * 动态设置菜单
     *
     * @return string
     */
    public function serve()
    {
        //验证token
        if(isset($_GET['echostr'])){
            $res = $this->checkSignature();
            if($res){
                echo $_GET['echostr'];exit;
            }
        }
        //自定义菜单
        $menu = $this->menu();
        print_r($menu);

    }

    //菜单url
    private function gotourl(){
        $redirect_uri = [
            0=>"http://m.admin.co.gegebox.com/#/",//运维工单
            1=>"http://m.admin.co.gegebox.com/#/task/patrol/personal",//巡检任务
            2=>"http://m.admin.co.gegebox.com/#/task/warn/personal",//告警终端
            3=>"http://m.admin.co.gegebox.com/#/terminal",//我的终端
        ];

        return $redirect_uri;
    }

    //处理微信菜单点击后的请求
    public function auth(){
        $code = \Input::get('code','');
        try{
            $accesstoken_ = $this->get_access_token();//获取全局access_token
            $access_token_arr = $this->global_access_token($code);//获取openid
            $openid_ = $access_token_arr['openid'];
            $url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token={$accesstoken_}&openid={$openid_}&lang=zh_CN";
            //拉取用户信息
            $userinfo =  json_decode(file_get_contents($url),true);
        }catch(\Exception $e){
            echo $e->getMessage();
            exit;
        }
        //跳转到对应页面
        $action = \Input::get('action',0);
        $gotourl = array_get($this->gotourl(),$action);

        //判断是否绑定过openid
        if($this->findOpenidUser($userinfo)){
            //此处应该自动登录 以后补上
            header("location:".$gotourl);exit;
        }else{
            header("location:".'http://m.admin.co.gegebox.com/#/login?openid='.$userinfo['openid']);exit;
        }
    }

    //微信消息推送  此处主要是工单推送  开放给后台的请求的接口
    public function sendmsg(){
        $postdata = \Input::get('datas',[]);
        $openid = \Input::get('openid','');
        $url = \Input::get('url','');
        $token = $this->get_access_token();
        $MBID = 'n9bcx_J8RuqIauMImwC198qGpC9_E2hBr2qaIKMVX3M';
        $data = [
            'touser'=>$openid,
            'template_id'=>$MBID,
            'url'=>$url,
            'data'=>$postdata
        ];

        try{
            \Requests::post('https://api.weixin.qq.com/cgi-bin/message/template/send?access_token='.$token, array(), json_encode($data));
        }catch(\Exception $e){

        }
    }

    //去数据库查找openid是否存在
    private function findOpenidUser($userinfo){
//        dump($userinfo);exit;
        if($userinfo['openid']){
            $user = User::where("weixin_id",$userinfo['openid'])->first();
            if($user){
                //该用户已经存在 可以自动登录
                return true;
            }else{
                return false;
            }
        }
        return false;
    }



    //创建自定义菜单
    private function menu(){
        $access_token = $this->get_access_token();
        $url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token={$access_token}";

        $base_url = [];
        for($i=0;$i<=3;$i++){
            $redirect_uri = urlencode("http://m.admin.co.gegebox.com/weixin/auth?action={$i}");
            $base_url[$i] ="https://open.weixin.qq.com/connect/oauth2/authorize?appid={$this->appid}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_base&state=123#wechat_redirect";
        }
        $post = '{
			"button":
			[
			    {
                    "type":"view",
                    "name":"运维工单",
                    "url":"'.$base_url[0].'"
                },
                {
                    "type":"view",
                    "name":"巡检任务",
                    "url":"'.$base_url[1].'"
                },
			    {
					"name":"我的基地",
					"sub_button":
					[
						{
							"type":"view",
							"name":"告警终端",
							"url":"'.$base_url[2].'"
						},
						{
							"type":"view",
							"name":"我的终端",
							"url":"'.$base_url[3].'"
						}
					]
				}
			]
		}';
        return $this->https_request($url,$post);
    }

    //获取取得openid
    private function global_access_token($code){
//        $session = app('session.store');
//        $session->put('userid', '');
//        $session->get('url.intended', '/');
        $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->appid}&secret={$this->appsecret}&code={$code}&grant_type=authorization_code";
        $tokens = json_decode($this->https_request($url),true);
        return $tokens;

    }

    //获取全局access_token
    private function get_access_token(){
//        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->appsecret}";
//        $access_token_arr =  json_decode($this->https_request($url),true);
//        $access_token = $access_token_arr['access_token'];
//        return $access_token;
        $_accesstoken = Cache::remember("qwebh55667g555555rt12345t",60,function(){
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->appsecret}";
            $access_token_arr =  json_decode($this->https_request($url),true);
            $access_token = $access_token_arr['access_token'];
            return $access_token;
        });
        return $_accesstoken;
    }

    //拉取用户基本信息
    private function get_user_info($access_token,$openid){
        $url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token={$access_token}&openid={$openid}&lang=zh_CN";
        $info =  json_decode(file_get_contents($url),true);
        return $info;
    }

    //验证token
    private function checkSignature(){
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];

        $tmpArr = array($this->token, $timestamp, $nonce);
        // use SORT_STRING rule
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );
        if( $tmpStr == $signature ){
            return true;
        }else{
            return false;
        }
    }

    //模拟post,get请求
    private function https_request($url,$data = null){
        $ch = curl_init();
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        if(!empty($data)){
            curl_setopt($ch,CURLOPT_POST,1);//模拟POST
            curl_setopt($ch,CURLOPT_POSTFIELDS,$data);//POST内容
        }
        $outopt = curl_exec($ch);
        curl_close($ch);
        return $outopt;
    }



}