<?php

/**
 * Created by PayBeaver <merchant.paybeaver.com>
 * Version: 2020-12-06.
 */

namespace App\Utils\Payments;

use App\Utils\Library\PaymentHelper;
use App\Utils\Library\Templates\Gateway;
use Http;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Log;
use Response;

class PayBeaver implements Gateway
{
    private const API_URL = 'https://api.paybeaver.com/api/v1/developer';

    private string $appId;

    private string $appSecret;

    public function __construct()
    {
        $this->appId = sysConfig('paybeaver_app_id');
        $this->appSecret = sysConfig('paybeaver_app_secret');
    }

    public static function metadata(): array
    {
        return [
            'key' => 'paybeaver',
            'method' => ['ali', 'wechat'],
            'settings' => [
                'paybeaver_app_id' => null,
                'paybeaver_app_secret' => null,
            ],
        ];
    }

    public function purchase(Request $request): JsonResponse
    {
        $payment = PaymentHelper::createPayment(auth()->id(), $request->input('id'), $request->input('amount'));

        $result = $this->createOrder([
            'app_id' => $this->appId,
            'merchant_order_id' => $payment->trade_no,
            'price_amount' => $payment->amount * 110,
            'notify_url' => route('payment.notify', ['method' => 'paybeaver']),
            'return_url' => route('invoice.index'),
        ]);

        if (! isset($result['message']) && isset($result['data']['pay_url'])) {
            $payment->update(['url' => $result['data']['pay_url']]);

            return Response::json(['status' => 'success', 'url' => $result['data']['pay_url'], 'message' => trans('user.payment.order_creation.success')]);
        }

        $payment->failed();
        if (isset($result['message'])) {
            Log::alert('【海狸支付】创建订单错误：'.$result['message']);

            return Response::json(['status' => 'fail', 'message' => trans('user.payment.order_creation.failed')]);
        }

        if (! isset($result['data']['pay_url'])) {
            Log::alert('【海狸支付】创建订单错误：未获取到支付链接'.var_export($result, true));
        }

        return Response::json(['status' => 'fail', 'message' => trans('user.payment.order_creation.failed')]);
    }

    private function createOrder(array $params): array
    {
        $params['sign'] = $this->sign($params);

        $response = Http::post(self::API_URL.'/orders', $params);

        if ($response->ok()) {
            return $response->json();
        }

        Log::alert('【海狸支付】创建订单失败：'.var_export($response->json(), true));

        return ['status' => 'fail', 'message' => '获取失败！请检查配置信息'];
    }

    private function sign(array $params): string
    {
        if (isset($params['sign'])) {
            unset($params['sign']);
        }
        ksort($params, SORT_STRING);

        return strtolower(md5(http_build_query($params).$this->appSecret));
    }

    public function notify(Request $request): void
    {
        if (! $this->paybeaverVerify($request->post())) {
            exit(json_encode(['status' => 400]));
        }

        if ($request->has(['merchant_order_id']) && PaymentHelper::paymentReceived($request->input(['merchant_order_id']))) {
            exit(json_encode(['status' => 200]));
        }

        Log::error('【海狸支付】交易失败：'.var_export($request->all(), true));

        exit(json_encode(['status' => 500]));
    }

    private function paybeaverVerify(array $params): bool
    {
        return hash_equals($params['sign'], $this->sign($params));
    }
}