<?php

namespace App\Service\v3\Implementations;

use App\Commons\Log;
use App\Constants\v3\ErrorCode;
use App\Constants\v3\LogLabel;
use App\Constants\v3\OrderState;
use App\Exception\ErrorCodeException;
use App\Model\v3\OrderMain;
use App\Model\v3\User;
use App\Service\v3\Interfaces\GoodsActivityServiceInterface;
use App\Service\v3\Interfaces\PaymentServiceInterface;
use EasyWeChat\Factory;
use Hyperf\Guzzle\CoroutineHandler;
use Hyperf\Di\Annotation\Inject;

class PaymentService implements PaymentServiceInterface
{
    /**
     * @Inject
     * @var Log
     */
    protected $log;

    /**
     * @Inject
     * @var GoodsActivityServiceInterface
     */
    protected $goodsActivityService;

    public function do($globalOrderId, $money, $userId)
    {

        try {

            $config = config('wxpay');
            $app = Factory::payment($config);
            $app['guzzle_handler'] = CoroutineHandler::class;

            // 待支付的，未超时（15min，900sec）的订单
            $orderMain = OrderMain::query()
                ->where(['state' => OrderState::UNPAID, 'global_order_id' => $globalOrderId, 'user_id' => $userId])
                ->where('created_at', '>=', (time()-900))
                ->first();

            if (empty($orderMain)) {
                throw new ErrorCodeException(ErrorCode::ORDER_NOT_AVAILABLE, '[支付订单号]'.$globalOrderId);
            }

            $payMoney = bcmul((string)$orderMain->money, 100, 0);
            if (env('APP_ENV') != 'prod') {
                $payMoney = 1;
            }

            $user = User::select('openid')->find($userId);
            $result = $app->order->unify([
                'body' => '懒族生活 - 外卖下单',
                'out_trade_no' => $orderMain->global_order_id,
                'total_fee' => $payMoney,
                'notify_url' => config('site_host') . '/wechat/notify/wxminionline',
                'trade_type' => 'JSAPI',
                'openid' => $user['openid'],
            ]);

            if ($result['return_code'] == 'FAIL') {
                throw new ErrorCodeException(ErrorCode::PAYMENT_FAIL, '[支付失败]'.$result['return_msg']);
            }

            // 返回支付参数给前端
            $parameters = [
                'appId' => $result['appid'],
                'timeStamp' => '' . time() . '',
                'nonceStr' => uniqid(),
                'package' => 'prepay_id=' . $result['prepay_id'],
                'signType' => 'MD5'
            ];

            $parameters['paySign'] = $this->signture($parameters, $config['key']);

            return $parameters;

        } catch (\Exception $e) {
            $this->log->event(LogLabel::ORDER_PAYMENT_LOG, ['payment_exception_msg' => $e->getMessage()]);
            throw new ErrorCodeException(ErrorCode::PAYMENT_FAIL, '[支付失败]'.$e->getMessage());
        }
    }

    public function check()
    {
        // TODO: Implement check() method.
    }

    public function undo()
    {
        // TODO: Implement undo() method.
    }

    /**
     * 支付参数加签
     * @param $parameters
     * @param $key
     * @return string
     */
    private function signture($parameters, $key)
    {
        // 按字典序排序参数
        ksort($parameters);

        // http_query
        $queryParams = $this->http_query($parameters);

        // 加入KEY
        $queryParams = $queryParams . "&key=" . $key;

        // MD5加密
        $queryParams = md5($queryParams);

        // 字符转为大写
        return strtoupper($queryParams);
    }

    /**
     * 参数转为http query字串
     * @param $parameters
     * @return string
     */
    private function http_query($parameters) {

        $http_query = [];
        foreach ($parameters as $key => $value) {
            $http_query[] = $key.'='.$value;
        }

        return implode('&', $http_query);
    }
}