moostafaa

//Saga Events
public record OrderCreatedEvent(Guid OrderId, int ProductId, int Quantity, decimal Amount, string CustomerId);
public record StockReservedEvent(Guid OrderId, int ProductId, int Quantity);
public record StockReservationFailedEvent(Guid OrderId, string Reason);
public record OrderConfirmedEvent(Guid OrderId);
public record OrderCancelledEvent(Guid OrderId, string Reason);
public record StockReleaseRequestedEvent(Guid OrderId, int ProductId, int Quantity);

public class OutboxMessage
{

moostafaa

public interface ITransactionParticipant
{
    Task<PrepareResult> PrepareAsync(Guid transactionId, TransactionContext context);    
    Task CommitAsync(Guid transactionId);    
    Task RollbackAsync(Guid transactionId);
}

public enum PrepareResult
{
    Prepared,

moostafaa

public class SaleDocument
{
....
  public decimal GetDiscerpancyAmount(ISpecification<SaleDocument> spec) =>
    spec.IsSatisfiedBy(this) ? ConfirmedPrice - DocumentNetPrice : 0;
....
}

public class SaleDocumentService
{

moostafaa

public decimal GetDiscerpancyAmount(ISpecification<SaleDocument> spec) =>
  spec.IsSatisfiedBy(this) ? ConfirmedPrice - DocumentNetPrice : 0;

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public class OrderWithoutInvoiceSpecification : Specification<SaleDocument>
{
    ...
}
public class ApprovedOrderWithoutInvoiceSpecification : AndSpecification<SaleDocument>
{
    public ApprovedOrderWithoutInvoiceSpecification()
        : base(new ApprovedOrderSpecification(), new OrderWithoutInvoiceSpecification())
    {}
}