38 lines
2.2 KiB
C#
38 lines
2.2 KiB
C#
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using MediatR;
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using System.Transactions;
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using ZeroFramework.DeviceCenter.Application.Infrastructure;
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using ZeroFramework.DeviceCenter.Application.IntegrationEvents.Events.Ordering;
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using ZeroFramework.DeviceCenter.Domain.Aggregates.BuyerAggregate;
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using ZeroFramework.DeviceCenter.Domain.Events.Ordering;
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namespace ZeroFramework.DeviceCenter.Application.DomainEventHandlers.Ordering.OrderStartedEvent
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{
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public class AddBuyerWhenOrderStartedDomainEventHandler(IBuyerRepository buyerRepository, IIntegrationEventService integrationEventService) : INotificationHandler<OrderStartedDomainEvent>
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{
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private readonly IBuyerRepository _buyerRepository = buyerRepository ?? throw new ArgumentNullException(nameof(buyerRepository));
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private readonly IIntegrationEventService _integrationEventService = integrationEventService ?? throw new ArgumentNullException(nameof(integrationEventService));
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public async Task Handle(OrderStartedDomainEvent orderStartedEvent, CancellationToken cancellationToken)
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{
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Buyer? buyer = await _buyerRepository.FindAsync(orderStartedEvent.UserId);
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bool buyerOriginallyExisted = buyer != null;
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buyer ??= new Buyer(userId: orderStartedEvent.UserId);
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buyer.VerifyOrAddPaymentMethod(orderStartedEvent.CardNumber, orderStartedEvent.CardTypeId, orderStartedEvent.CardExpiration, orderStartedEvent.Order.Id);
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_ = buyerOriginallyExisted ? _buyerRepository.Update(buyer) : _buyerRepository.Add(buyer);
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var integrationEvent = new OrderStatusChangedToSubmittedIntegrationEvent(orderStartedEvent.Order.Id, orderStartedEvent.Order.OrderStatus.Name, buyer.UserId);
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using var scope = new TransactionScope(TransactionScopeOption.Required, new TransactionOptions { IsolationLevel = IsolationLevel.ReadCommitted });
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await _buyerRepository.UnitOfWork.SaveChangesAsync(cancellationToken);
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await _integrationEventService.AddAndSaveEventAsync(integrationEvent);
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// Commit transaction if all commands succeed, transaction will auto-rollback
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// when disposed if either commands fails
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scope.Complete();
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}
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}
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}
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