using CreditCardValidator;
using Domain;
using EasyNetQ;
using Microsoft.Extensions.Hosting;
using System;
using System.Threading;
using System.Threading.Tasks;

namespace PagamentoService.BackgroundServices
{
    public class NovoPedidoEventHandler : BackgroundService
    {
        private IBus _bus;

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            _bus = RabbitHutch.CreateBus("host=127.0.0.1");
            _bus.Subscribe<OrderCreatedEvent>("PagamentoService", ProccessPayment);

            while (!stoppingToken.IsCancellationRequested)
            {
                await Task.Delay(TimeSpan.FromSeconds(15), stoppingToken);
            }
            _bus.Dispose();
        }

        private void ProccessPayment(OrderCreatedEvent order)
        {
            var payment = new Payment(order.Id, order.CreditCard.CardNumber, order.CreditCard.Expiration, order.CreditCard.Name);
            var detector = new CreditCardDetector(order.CreditCard.CardNumber);
            if (detector.IsValid())
                payment.Apply(detector.BrandName);
            else
                payment.Deny();
            // Businness rules, save at database, etc...
        }
    }
}