<?php

namespace tencent\wechat\pay;


use think\facade\Cache;
use SimpleXMLElement;
use think\facade\Request;

class Qqwxpay extends Base
{

    /**
     * QQ小程序调取微信支付
     * @param string $openid 微信号
     * @param double $money 支付金额
     * @param string $order_number 订单编号
     * @param string $body 商品描述
     * @param string $notify_url 回调函数地址
     * @date 2021-03-01
     */
    public function qqWxPay($openid, $money, $order_number, $body = '', $notify_url = '', $user_agent = 'weixin')
    {
        //统一下单接口  获取PrepayId 生成预支付交易单 不需要证书
        $appid = $this->wxpayConfig['mp_qq_app_id'];
        $access_token = $this->getAccessToken();
        $notify_url_url_encode = urlencode($notify_url);
        $url = "https://api.q.qq.com/wxpay/unifiedorder?appid=$appid&access_token=$access_token&&real_notify_url=$notify_url_url_encode";

        $data = [
            'appid' => $this->wxpayConfig['app_id'],
            'mch_id' => $this->wxpayConfig['mch_id'],
            'nonce_str' => createNonceStr(32),
            'body' => $body,
            'out_trade_no' => $order_number,
            'total_fee' => (int)($money * 100),
            'spbill_create_ip' => getUserIp(),
            'notify_url' => 'https://api.q.qq.com/wxpay/notify',
            'trade_type' => 'MWEB',
            'scene_info' => (string)json_encode([
                'h5_info' => [
                    'type' => 'Wap',
                    'wap_url' => Request::domain(),
                    'wap_name' => $this->wxpayConfig['mp_qq_app_name']
                ]
            ]),
        ];
        $data['sign'] = $this->getPaySign($data);

        //转为XML
        $data_xml = dataToXml($data);

        $response = httpXmlPost($data_xml, $url);
        $result = xml_to_array($response);

        platformLog($data, $result, 'get_pre_pay_id');

        return $result;


    }

    /**
     * 微信支付回调验证
     * @date 2021-07-20
     */
    public function checkNotifySign($xml)
    {
        $data = xml_to_array($xml);

        $tmp_data = $data;
        unset($tmp_data['sign']);
        $sign = $this->getPaySign($tmp_data);//本地签名

        //收到微信支付结果通知后，返回参数给微信支付
        if ($data['sign'] === $sign) {
            $check_sign = true;
            $return_data = [
                'return_code' => 'SUCCESS',
                'return_msg' => 'OK'
            ];
        } else {
            $check_sign = false;
            $return_data = [
                'return_code' => 'FAIL',
                'return_msg' => '签名失败'
            ];
        }

        $returnXml = dataToXml($return_data);
        echo $returnXml;

        platformLog($data, $return_data, 'check_notify_sign');
        if ($check_sign) {
            return [
                'code' => 0,
                'data' => $data
            ];
        } else {
            return [
                'code' => 4001,
                'data' => '验签失败'
            ];
        }
    }


    /**
     * 获取ACCESS_TOKEN
     * @date 2021-07-20
     */
    public function getAccessToken()
    {
        $platform = config('platform');

        $access_token = Cache::store('redis')->get('mp_qq_access_token_' . $this->wxpayConfig['uid']);
        if (!isset($access_token['expires_time']) || 0 < time()) {
            $appid = $this->wxpayConfig['mp_qq_app_id'];
            $secret = $this->wxpayConfig['mp_qq_app_secret'];
            $url = "https://api.q.qq.com/api/getToken?grant_type=client_credential&appid=$appid&secret=$secret";
            $res = http_data_get($url);
            if ($res['errcode'] == 0) {
                $access_token = [
                    'access_token' => $res['access_token'],
                    'expires_time' => time() + $res['expires_in'] - 300
                ];
                Cache::store('redis')->set('mp_qq_access_token_' . $this->wxpayConfig['uid'], $access_token);
            }
        }
        return $access_token['access_token'];
    }

    /**
     * 获取微信签名
     * @date 2021-07-20
     * @param array $data 需要生成签名数据
     */
    public function getPaySign($data)
    {
        foreach ($data as $k => $v) {
            if ($v) {
                $Parameters[$k] = $v;
            }
        }
        ksort($Parameters);
        $String = '';
        foreach ($Parameters as $k => $v) {
            $String .= $k . "=" . $v . "&";
        }
        $String = $String . "key=" . $this->wxpayConfig['app_secret'];
        $String = md5($String);
        $result = strtoupper($String);

        platformLog([$data, $this->wxpayConfig['app_secret']], $result, 'get_pay_sign');
        return $result;
    }

}