<?php

namespace App\Libs\Pay\Merchants;

use App\Modules\Subscribe\Services\OrderService;
use Exception;
use GuzzleHttp\Client;
use Illuminate\Http\Request;
use DB;

/**
 * 银联支付
 */
class UnionPay implements PayMerchantInterface
{
    private $make_order_url = 'https://qr-test2.chinaums.com/netpay-portal/webpay/pay.do';
    private $query_order_url = 'https://qr-test2.chinaums.com/netpay-route-server/api/';
    private $msgType = 'WXPay.jsPay';
    private $signType = 'MD5';
    private $mid;
    private $tid;
    private $instMid;
    private $msgSrc;
    private $msgSrcId;
    private $key;


    public function __construct(array $config)
    {
        $this->mid = $config['mid'];
        $this->tid = $config['tid'];
        $this->instMid = $config['instMid'];
        $this->msgSrc = $config['msgSrc'];
        $this->msgSrcId = $config['msgSrcId'];
        $this->key = $config['key'];
    }

    private function setConfig(array $config)
    {
        $this->mid = $config['mid'];
        $this->tid = $config['tid'];
        $this->instMid = $config['instMid'];
        $this->msgSrc = $config['msgSrc'];
        $this->msgSrcId = $config['msgSrcId'];
        $this->key = $config['key'];
    }

    public function send(array $data)
    {
        $result = [
            'mid' => $this->mid,
            'tid' => $this->tid,
            'instMid' => $this->instMid,
            'msgSrc' => $this->msgSrc,
            'msgSrcId' => $this->msgSrcId,
            'msgType' => $this->msgType,
            'signType' => $this->signType,
            'requestTimestamp' => date('Y-m-d H:i:s'),
            'notifyUrl' => env('UNIONPAY_NOFITY_URL'),
            'returnUrl' => urlencode($data['pay_wait_url']),
            'totalAmount' => $data['price'],
            'merOrderId' => $this->msgSrcId . $data['trade_no'],
        ];
        $result['sign'] = $this->makeSign($result);
        $query_params = http_build_query($result);
        return $this->make_order_url . '?' . $query_params;
    }

    public function query(string $trade_no)
    {
        $query_params = [
            'msgType' => 'query',
            'requestTimestamp' => date('Y-m-d H:i:s'),
            'mid' => $this->mid,
            'tid' => $this->tid,
            'instMid' => $this->instMid,
            'msgSrc' => $this->msgSrc,
            'msgSrcId' => $this->msgSrcId,
            'signType' => $this->signType,
            'merOrderId' => $trade_no,
        ];
        $query_params['sign'] = $this->makeSign($query_params);
        try {
            $client = new Client(['base_uri' => $this->query_order_url, 'timeout' => 3]);
            $result = $client->request('POST', '/mct1/payorder', ['form_params' => $query_params])->getBody()->getContents();
            if ($result) {
                $result = json_decode($result);
                if ($result->errCode === 'SUCCESS' && $result->status === 'TRADE_SUCCESS') {
                    return true;
                }
            }
        } catch (Exception $e) { }

        return false;
    }

    public static function notify(Request $request, callable $callback)
    {
        $data = $request->all();
        if ($data['status'] === 'TRADE_SUCCESS') {
            $trade_no = $data['merOrderId'];
            if ($trade_no) {
                $order = OrderService::getByTradeNo($trade_no);
                $order->transaction_id = $data['targetOrderId'];
                if ($order) {
                    $pay_merchant = DB::table('pay_merchants')->select('appid', 'source', 'config_info')
                        ->where('id', $order->pay_merchant_id)->where('is_enabled', 1)->first();
                    $instance = new UnionPay(json_decode($pay_merchant->config_info, true));
                    $sign = $instance->makeSign($data);
                    if ($sign === $data['sign']) {
                        if (call_user_func_array($callback, [$order])) {
                            return 'SUCCESS';
                        }
                    }
                }
            }
        }
        return 'FAILED';
    }

    /**
     * 生成订单号
     */
    public function generateTradeNo()
    {
        return $this->msgSrcId . date("YmdHis") . substr(uniqid(), 0, 12);
    }

    private function makeSign(array $data)
    {
        //签名步骤一：按字典序排序参数
        ksort($data);
        $buff = "";
        foreach ($data as $k => $v) {
            if ($k != "sign" && $v != "" && !is_array($v)) {
                $buff .= $k . "=" . $v . "&";
            }
        }
        $buff = trim($buff, "&");
        //签名步骤二：在string后加入KEY
        $string = $buff . $this->key;
        //签名步骤三：MD5加密
        $string = md5($string);
        //签名步骤四：所有字符转为大写
        $result = strtoupper($string);
        return $result;
    }
}