public async Task <IIdentifierResult> HandleAsync(ICreateSale command, ICorrelationContext context)
{
await Task.WhenAll(
_agVerifier.AssertExists(command.AccountingGroupId),
_userVerifier.AssertExists(command.UserId),
_posVerifier.AssertExists(command.PointOfSaleId),
_amVerifier.AssertExists(command.AuthenticationMeansId),
_productVerifier.AssertExists(command.ProductId),
_offerVerifier.AssertExists(command.OfferId)
);
var sale = new Domain.Sale(command.Id, command.Cost, command.Quantity, command.AccountingGroupId, command.UserId, command.AuthenticationMeansId, command.PointOfSaleId, command.ProductId, command.OfferId);
var initialSaleStateChange = new Domain.SaleStateChange(Guid.NewGuid(), "Created", default(SaleState), command.PointOfSaleId, null);
sale.AddStateChange(initialSaleStateChange);
await _salesRepository.AddAsync(sale);
try
{
await _salesRepository.SaveChanges();
}
catch (EntityAlreadyExistsException)
{
throw new BaristaException("sale_already_exists", $"A sale with the ID '{command.Id}' already exists.");
}
await _busPublisher.Publish(new SaleCreated(sale));
await _busPublisher.Publish(new SaleStateChangeCreated(initialSaleStateChange.Id, sale.Id,
initialSaleStateChange.Created, initialSaleStateChange.Reason, initialSaleStateChange.State.ToString(),
initialSaleStateChange.CausedByPointOfSaleId, initialSaleStateChange.CausedByUserId));
return(new IdentifierResult(sale.Id));
}
public async Task <IIdentifierResult> HandleAsync(ICreateSaleStateChange command, ICorrelationContext context)
{
var sale = await _salesRepository.GetAsync(command.ParentSaleId);
if (sale is null)
{
throw new BaristaException("sale_not_found", $"Sale with ID '{command.ParentSaleId}' was not found");
}
if (command.CausedByUserId != null)
{
await _userVerifier.AssertExists(command.CausedByUserId.Value);
}
if (command.CausedByPointOfSaleId != null)
{
await _posVerifier.AssertExists(command.CausedByPointOfSaleId.Value);
}
var saleStateChange = new Domain.SaleStateChange(command.Id, command.Reason, Enum.Parse <SaleState>(command.State), command.CausedByPointOfSaleId, command.CausedByUserId);
sale.AddStateChange(saleStateChange);
await _salesRepository.UpdateAsync(sale);
await _salesRepository.SaveChanges();
await _busPublisher.Publish(new SaleStateChangeCreated(saleStateChange.Id, sale.Id, saleStateChange.Created,
saleStateChange.Reason, saleStateChange.State.ToString(), saleStateChange.CausedByPointOfSaleId,
saleStateChange.CausedByUserId));
return(new IdentifierResult(sale.Id));
}
public async Task <IIdentifierResult> HandleAsync(ICreateOffer command, ICorrelationContext context)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
await Task.WhenAll(
_posVerifier.AssertExists(command.PointOfSaleId),
_productVerifier.AssertExists(command.ProductId),
command.StockItemId != null?_stockItemVerifier.AssertExists(command.StockItemId.Value) : Task.CompletedTask
);
var offer = new Domain.Offer(command.Id, command.PointOfSaleId, command.ProductId, command.RecommendedPrice, command.StockItemId, command.ValidSince, command.ValidUntil);
await _repository.AddAsync(offer);
try
{
await _repository.SaveChanges();
}
catch (EntityAlreadyExistsException)
{
throw new BaristaException("offer_already_exists", $"An offer with the ID '{command.Id}' already exists.");
}
await _busPublisher.Publish(new OfferCreated(offer.Id, offer.PointOfSaleId, offer.ProductId,
offer.RecommendedPrice, offer.StockItemId, offer.ValidSince, offer.ValidUntil));
return(new IdentifierResult(offer.Id));
}
public async Task <IOperationResult> HandleAsync(IUpdateOffer command, ICorrelationContext context)
{
if (command == null)
{
throw new ArgumentNullException(nameof(command));
}
var offer = await _repository.GetAsync(command.Id);
if (offer is null)
{
throw new BaristaException("offer_not_found", $"Could not find offer with ID '{command.Id}'");
}
await Task.WhenAll(
_posVerifier.AssertExists(command.PointOfSaleId),
_productVerifier.AssertExists(command.ProductId),
command.StockItemId != null?_stockItemVerifier.AssertExists(command.StockItemId.Value) : Task.CompletedTask
);
offer.SetPointOfSaleId(command.PointOfSaleId);
offer.SetProductId(command.ProductId);
offer.SetRecommendedPrice(command.RecommendedPrice);
offer.SetStockItemId(command.StockItemId);
offer.SetValidity(command.ValidSince, command.ValidUntil);
await _repository.UpdateAsync(offer);
await _repository.SaveChanges();
await _busPublisher.Publish(new OfferUpdated(offer.Id, offer.PointOfSaleId, offer.ProductId,
offer.RecommendedPrice, offer.StockItemId, offer.ValidSince, offer.ValidUntil));
return(OperationResult.Ok());
}
public async Task <IOperationResult> HandleAsync(IUpdateSale command, ICorrelationContext context)
{
var sale = await _salesRepository.GetAsync(command.Id);
if (sale is null)
{
throw new BaristaException("sale_not_found", $"Sale with ID '{command.Id}' was not found");
}
await Task.WhenAll(
_agVerifier.AssertExists(command.AccountingGroupId),
_userVerifier.AssertExists(command.UserId),
_posVerifier.AssertExists(command.PointOfSaleId),
_amVerifier.AssertExists(command.AuthenticationMeansId),
_productVerifier.AssertExists(command.ProductId),
_offerVerifier.AssertExists(command.OfferId)
);
sale.SetAuthenticationMeansId(command.AuthenticationMeansId);
sale.SetAccountingGroupId(command.AccountingGroupId);
sale.SetCost(command.Cost);
sale.SetPointOfSaleId(command.PointOfSaleId);
sale.SetQuantity(command.Quantity);
sale.SetUserId(command.UserId);
sale.SetProductId(command.ProductId);
sale.SetOfferId(command.OfferId);
await _salesRepository.UpdateAsync(sale);
await _salesRepository.SaveChanges();
await _busPublisher.Publish(new SaleUpdated(sale));
return(OperationResult.Ok());
}
public async Task <IOperationResult> HandleAsync(IUpdateAssignmentToPointOfSale command, ICorrelationContext context)
{
var assignment = await _repository.GetAsync(command.Id);
if (assignment is null)
{
throw new BaristaException("assignment_not_found", $"Assignment with ID '{command.Id}' was not found");
}
if (!(assignment is Domain.AssignmentToPointOfSale assignmentToUser))
{
throw new BaristaException("invalid_assignment_update_command", "This assignment does not assign means to a point of sale and as such cannot be updated with this command.");
}
await Task.WhenAll(
_meansVerifier.AssertExists(command.MeansId),
_posVerifier.AssertExists(command.PointOfSaleId)
);
assignment.SetMeansId(command.MeansId);
assignment.SetValidity(command.ValidSince, command.ValidUntil);
assignmentToUser.SetPointOfSale(command.PointOfSaleId);
await _repository.UpdateAsync(assignmentToUser);
await _repository.SaveChanges();
try
{
await _exclVerifier.VerifyAssignmentExclusivity(command.MeansId);
}
catch (BaristaException)
{
await _repository.DeleteAsync(assignment);
await _repository.SaveChanges();
throw;
}
await _busPublisher.Publish(new AssignmentToPointOfSaleUpdated(assignmentToUser.Id,
assignmentToUser.MeansId, assignmentToUser.ValidSince, assignmentToUser.ValidUntil,
assignmentToUser.PointOfSaleId));
return(OperationResult.Ok());
}
public async Task <IIdentifierResult> HandleAsync(ICreateStockItem command, ICorrelationContext context)
{
await _posVerifier.AssertExists(command.PointOfSaleId);
var stockItem = new Domain.StockItem(command.Id, command.DisplayName, command.PointOfSaleId);
await _repository.AddAsync(stockItem);
try
{
await _repository.SaveChanges();
}
catch (EntityAlreadyExistsException)
{
throw new BaristaException("stock_item_already_exists", $"A stock item with the ID '{command.Id}' already exists.");
}
await _busPublisher.Publish(new StockItemCreated(stockItem.Id, stockItem.DisplayName, stockItem.PointOfSaleId));
return(new IdentifierResult(stockItem.Id));
}
public async Task <IOperationResult> HandleAsync(IUpdateStockItem command, ICorrelationContext context)
{
var stockItem = await _repository.GetAsync(command.Id);
if (stockItem is null)
{
throw new BaristaException("stock_item_not_found", $"Could not find stock item with ID '{command.Id}'");
}
await _posVerifier.AssertExists(command.PointOfSaleId);
stockItem.SetDisplayName(command.DisplayName);
stockItem.SetPointOfSaleId(command.PointOfSaleId);
await _repository.UpdateAsync(stockItem);
await _repository.SaveChanges();
await _busPublisher.Publish(new StockItemUpdated(stockItem.Id, stockItem.DisplayName, stockItem.PointOfSaleId));
return(OperationResult.Ok());
}
public async Task <IOperationResult> HandleAsync(IUpdateSaleStateChange command, ICorrelationContext context)
{
var sale = await _salesRepository.GetAsync(command.ParentSaleId);
if (sale is null)
{
throw new BaristaException("sale_not_found", $"Sale with ID '{command.ParentSaleId}' was not found");
}
var saleStateChange = sale.StateChanges.FirstOrDefault(chg => chg.Id == command.Id);
if (saleStateChange is null)
{
throw new BaristaException("sale_state_change_not_found", $"Sale state change with ID '{command.Id}' not found for sale with ID '{command.ParentSaleId}");
}
if (command.CausedByUserId != null)
{
await _userVerifier.AssertExists(command.CausedByUserId.Value);
}
if (command.CausedByPointOfSaleId != null)
{
await _posVerifier.AssertExists(command.CausedByPointOfSaleId.Value);
}
saleStateChange.SetReason(command.Reason);
saleStateChange.SetCausedByPointOfSaleId(command.CausedByPointOfSaleId);
saleStateChange.SetCausedByUserId(command.CausedByUserId);
await _salesRepository.UpdateAsync(sale);
await _salesRepository.SaveChanges();
await _busPublisher.Publish(new SaleStateChangeUpdated(saleStateChange.Id, saleStateChange.Created,
saleStateChange.Reason, saleStateChange.State.ToString(), saleStateChange.CausedByPointOfSaleId,
saleStateChange.CausedByUserId));
return(OperationResult.Ok());
}
public async Task <IIdentifierResult> HandleAsync(ICreateAssignmentToPointOfSale command, ICorrelationContext context)
{
await Task.WhenAll(
_meansVerifier.AssertExists(command.MeansId),
_posVerifier.AssertExists(command.PointOfSaleId)
);
var assignment = new Domain.AssignmentToPointOfSale(command.Id, command.MeansId, command.ValidSince, command.ValidUntil, command.PointOfSaleId);
await _repository.AddAsync(assignment);
try
{
await _repository.SaveChanges();
}
catch (EntityAlreadyExistsException)
{
throw new BaristaException("assignment_to_point_of_sale_already_exists", $"An assignment with the ID '{command.Id}' already exists.");
}
try
{
await _exclVerifier.VerifyAssignmentExclusivity(command.MeansId);
}
catch (BaristaException)
{
await _repository.DeleteAsync(assignment);
await _repository.SaveChanges();
throw;
}
await _busPublisher.Publish(new AssignmentToPointOfSaleCreated(command.Id, command.MeansId, command.ValidSince, command.ValidUntil, command.PointOfSaleId));
return(new IdentifierResult(assignment.Id));
}