/*判断是否微信环境*/
function is_weixin()
{
    if (strpos($_SERVER[‘HTTP_USER_AGENT‘], ‘MicroMessenger‘) !== false) {
        return true;
    }
    return false;
}

/**
 * 获取wx_code的URL
 * 1获取code
 * 2获取access_token
 * 3获取userinfo
 * 4获取通用token
 * 5获取ticket
 * 6发送模板
 * 7 获取用户信息2（是否关注）
 */
function get_wx_url($param)
{
    if ($param[‘type‘] == 1) {
        $arr = [
            ‘appid‘ => $param[‘appid‘],
            ‘redirect_uri‘ => $param[‘url‘],
            ‘response_type‘ => ‘code‘,
            ‘scope‘ => ‘snsapi_userinfo‘,
            ‘state‘ => 1
        ];
        $param = http_build_query($arr);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?" . $param . "#wechat_redirect";
    } elseif ($param[‘type‘] == 2) {

        return "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $param[‘appid‘] . "&secret=" . $param[‘secret‘] . "&code=" . $param[‘code‘] . "&grant_type=authorization_code";
    } elseif ($param[‘type‘] == 3) {

        return "https://api.weixin.qq.com/sns/userinfo?access_token=" . $param[‘access_token‘] . "&openid=" . $param[‘openid‘] . "&lang=zh_CN";
    } elseif ($param[‘type‘] == 4) {

        return "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $param[‘appid‘] . "&secret=" . $param[‘secret‘];
    } elseif ($param[‘type‘] == 5) {

        return "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" . $param[‘access_token‘] . "&type=jsapi";
    } elseif ($param[‘type‘] == 6) {
        return "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" . $param[‘access_token‘];
    } elseif ($param[‘type‘] == 7) {
        return "https://api.weixin.qq.com/cgi-bin/user/info?access_token=" . $param[‘access_token‘] . "&openid=" . $param[‘openid‘] . "&lang=zh_CN";
    }
}

/**获取微信token 有效期2 hours*/
function get_token($param)
{
    if (!Cache::get(‘access_token‘)) {
        $url = get_wx_url([‘type‘ => 4, ‘appid‘ => $param[‘appid‘], ‘secret‘ => $param[‘secret‘]]);
        $re1 = Http::sendRequest($url);
        $access_token = json_decode($re1[‘msg‘])->access_token;
        Cache::set(‘access_token‘, $access_token, 3000);
    } else {
        $access_token = Cache::get(‘access_token‘);
    }

    return $access_token;
}

/*获取openid*/
function get_openid($param)
{
    $url = get_wx_url(
        [
            ‘type‘ => 1,
            ‘appid‘ => $param[‘site‘][‘wx_appid‘],
            ‘url‘ => $param[‘site‘][‘domain‘] . "api/index/openid"
        ]
    );

    if ($param && isset($param[‘code‘])) {
        $access_token_url = get_wx_url(
            [
                ‘type‘ => 2,
                ‘appid‘ => $param[‘site‘][‘wx_appid‘],
                ‘secret‘ => $param[‘site‘][‘wx_secret‘],
                ‘code‘ => $param[‘code‘]
            ]
        );

        $re = Http::sendRequest($access_token_url, [], ‘GET‘);
        if ($re[‘ret‘] == 1 && $re[‘msg‘]) {
            $msg = json_decode($re[‘msg‘]);

            if (isset($msg->errcode)) {
                echo ‘<pre>‘;
                print_r($msg);
                exit;
            } else {
                $access_token = $msg->access_token;
                $openid = $msg->openid;
                return $openid;
            }

        }

    } else {
        header("Location:" . $url);
        exit;
    }


}

/*微信登录*/
function wx_login($param)
{

    $url = get_wx_url(
        [
            ‘type‘ => 1,
            ‘appid‘ => $param[‘site‘][‘wx_appid‘],
            ‘url‘ => $param[‘site‘][‘domain‘]
        ]
    );

    if ($param && isset($param[‘code‘])) {
        $access_token_url = get_wx_url(
            [
                ‘type‘ => 2,
                ‘appid‘ => $param[‘site‘][‘wx_appid‘],
                ‘secret‘ => $param[‘site‘][‘wx_secret‘],
                ‘code‘ => $param[‘code‘]
            ]
        );

        $re = Http::sendRequest($access_token_url, [], ‘GET‘);
        if ($re[‘ret‘] == 1 && $re[‘msg‘]) {
            $msg = json_decode($re[‘msg‘]);

            if (isset($msg->errcode)) {
                echo ‘<pre>‘;
                print_r($msg);
                exit;
            } else {
                $access_token = $msg->access_token;
                $openid = $msg->openid;
            }

        }

        $user_info_url = get_wx_url(
            [
                ‘type‘ => 3,
                ‘access_token‘ => $access_token,
                ‘openid‘ => $openid
            ]
        );
        $userinfo = Http::sendRequest($user_info_url, [], ‘GET‘);
        if ($re[‘ret‘] == 1 && $re[‘msg‘]) {
            $msg = json_decode($re[‘msg‘]);

            if (isset($msg->errcode)) {
                echo ‘<pre>‘;
                print_r($msg);
                exit;
            } else {
                /*判断用户的存在情况  微信注册新用户*/
                $info = json_decode($userinfo[‘msg‘]);
                /*echo ‘<pre>‘;
                print_r($info);
                exit;*/
                /*2020年1月18日09:51:14 判断用户关注情况  1获取通用token  2获取关注信息*/
                $param =
                    [
                        ‘appid‘ => $param[‘site‘][‘wx_appid‘],
                        ‘secret‘ => $param[‘site‘][‘wx_secret‘],
                    ];
                $token = get_token($param);
                $sub_user_info_url = get_wx_url(
                    [
                        ‘type‘ => 7,
                        ‘access_token‘ => $token,
                        ‘openid‘ => $openid
                    ]
                );
                $subuserinfo = Http::sendRequest($sub_user_info_url, [], ‘GET‘);

                $subuserinfo = json_decode($subuserinfo[‘msg‘]);

                $data = [‘avatar‘ => $info->headimgurl, ‘openid‘ => $info->openid, ‘nickname‘ => $info->nickname,
                    ‘is_subscrib‘ => $subuserinfo->subscribe,
                ];
                $user = User::where([‘openid‘ => $info->openid])->find();
                if ($user) {
                    if ($user[‘nickname‘]) {
                        unset($data[‘nickname‘]);
                    }
                    if (!$user[‘avatar‘] || !file_exists($user[‘avatar‘])) {
                        /*将头像储存在本地*/
                        $file = getImage($data[‘avatar‘]);

                        $path = "../public/uploads/" . date(‘Ymd‘) . "/avatar/";

                        if (!is_dir($path)) {
                            mkdir($path, 0777, true);
                        }
                        $avatar_file_name = $path . date(‘YmdHis‘) . $data[‘openid‘] . ".jpg";
                        // $re = $file->save($qrcode_file_name);
                        file_put_contents($avatar_file_name, $file);

                        $data[‘avatar‘] = str_replace("../public", "", $avatar_file_name);
                    } else {
                        unset($data[‘avatar‘]);
                    }

                    User::where([‘openid‘ => $info->openid])->update($data);
                } else {
                    /*将头像储存在本地*/
                    $file = getImage($data[‘avatar‘]);

                    $path = "../public/uploads/" . date(‘Ymd‘) . "/avatar/";

                    if (!is_dir($path)) {
                        mkdir($path, 0777, true);
                    }
                    $avatar_file_name = $path . date(‘YmdHis‘) . $data[‘openid‘] . ".jpg";
                    // $re = $file->save($qrcode_file_name);
                    file_put_contents($avatar_file_name, $file);

                    $data[‘avatar‘] = str_replace("../public", "", $avatar_file_name);

                    $data[‘createtime‘] = $data[‘jointime‘] = time();
                    $user = User::create($data);
                    $team = new Team();
                    $team::create([‘user_id‘ => $user->id]);
                }
                $re_url = session(‘re_url‘);

                session(‘uid‘, $user[‘id‘]);

                header("Location:" . $re_url);

            }
        }

    } else {
        if (!session(‘re_url‘)) {
            session(‘re_url‘, $param[‘re_url‘]);
        }

        if (!session(‘uid‘)) {
            header("Location:" . $url);
            exit;
        }
    }
}


function createNonceStr($length = 16)
{
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    $str = "";
    for ($i = 0; $i < $length; $i++) {
        $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
}


/*获取微信jssdk ticket 1获取access_token*/
function get_ticket($param)
{
    //return ‘‘;


    if (Cache::get(‘jsticket‘) == ‘123123‘) {
        Cache::set(‘jsticket‘, 0);
    }

    if (Cache::get(‘access_token‘) == ‘123123‘) {
        Cache::set(‘access_token‘, 0);
    }

    if (!Cache::get(‘jsticket‘)) {
        if (!Cache::get(‘access_token‘)) {
            $url = get_wx_url([‘type‘ => 4, ‘appid‘ => $param[‘site‘][‘wx_appid‘], ‘secret‘ => $param[‘site‘][‘wx_secret‘]]);
            $re1 = Http::sendRequest($url);
            $access_token = json_decode($re1[‘msg‘])->access_token;
            Cache::set(‘access_token‘, $access_token, 4500);
        } else {
            $access_token = Cache::get(‘access_token‘);
        }

        if ($access_token) {
            $ticket_url = get_wx_url([‘type‘ => 5, ‘access_token‘ => $access_token]);

            $re = Http::sendRequest($ticket_url);
            if ($re) {
                $jsticket = json_decode($re[‘msg‘])->ticket;
                Cache::set(‘jsticket‘, $jsticket, 4500);
            }
        }
    } else {
        $jsticket = Cache::get(‘jsticket‘);
        $access_token = Cache::get(‘access_token‘);
    }
    $timestamp = time();
    $noncestr = createNonceStr();

    // 注意 URL 建议动态获取(也可以写死).
    $protocol = (!empty($_SERVER[‘HTTPS‘]) && $_SERVER[‘HTTPS‘] !== ‘off‘ || $_SERVER[‘SERVER_PORT‘] == 443) ? "https://" : "http://";
    $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
    //$url = "http://kangaroo.vshop365.cn/"; // 调用JSSDK的页面地址


    $str = "jsapi_ticket={$jsticket}&noncestr={$noncestr}&timestamp={$timestamp}&url={$url}";
    // 进行sha1签名
    $sha_str = sha1($str);

    return [‘ticket‘ => $jsticket, ‘url‘ => $url, ‘access_token‘ => $access_token,
        ‘timestamp‘ => $timestamp, ‘noncestr‘ => $noncestr, ‘signature‘ => $sha_str, ‘appid‘ => $param[‘site‘][‘wx_appid‘]];

}


/*发送模板消息*/
function send_template($param)
{

    if (!Cache::get(‘access_token‘)) {
        $url = get_wx_url([‘type‘ => 4, ‘appid‘ => $param[‘site‘][‘wx_appid‘], ‘secret‘ => $param[‘site‘][‘wx_secret‘]]);
        $re1 = Http::sendRequest($url);
        $access_token = json_decode($re1[‘msg‘])->access_token;
        Cache::set(‘access_token‘, $access_token, 4500);
    } else {
        $access_token = Cache::get(‘access_token‘);
    }

    if ($access_token) {
        $ticket_url = get_wx_url([‘type‘ => 6, ‘access_token‘ => $access_token]);

        $re = Http::sendRequest($ticket_url, $param[‘data‘]);
        if ($re) {
            return $re;
        }
    }


}