public async Task <int> Handle(CreateProductCommand request, CancellationToken cancellationToken)
{
var entity = new Product
{
ProductName = request.ProductName,
CategoryId = request.CategoryId,
SupplierId = request.SupplierId,
UnitPrice = request.UnitPrice,
Discontinued = request.Discontinued
};
_context.Products.Add(entity);
await _context.SaveChangesAsync(cancellationToken);
return(entity.ProductId);
}
public async Task <Unit> Handle(UpdateProductCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Products.FindAsync(request.ProductId);
if (entity == null)
{
throw new NotFoundException(nameof(Product), request.ProductId);
}
entity.ProductId = request.ProductId;
entity.ProductName = request.ProductName;
entity.CategoryId = request.CategoryId;
entity.SupplierId = request.SupplierId;
entity.UnitPrice = request.UnitPrice;
entity.Discontinued = request.Discontinued;
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(DeleteProductCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Products.FindAsync(request.Id);
if (entity == null)
{
throw new NotFoundException(nameof(Product), request.Id);
}
var hasOrders = _context.OrderDetails.Any(od => od.ProductId == entity.ProductId);
if (hasOrders)
{
// TODO: Add functional test for this behaviour.
throw new DeleteFailureException(nameof(Product), request.Id, "There are existing orders associated with this product.");
}
_context.Products.Remove(entity);
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(CreateCustomerCommand request, CancellationToken cancellationToken)
{
var entity = new Customer
{
CustomerId = request.Id,
Address = request.Address,
City = request.City,
CompanyName = request.CompanyName,
ContactName = request.ContactName,
ContactTitle = request.ContactTitle,
Country = request.Country,
Fax = request.Fax,
Phone = request.Phone,
PostalCode = request.PostalCode
};
_context.Customers.Add(entity);
await _context.SaveChangesAsync(cancellationToken);
await _mediator.Publish(new CustomerCreated { CustomerId = entity.CustomerId }, cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(UpdateCustomerCommand request, CancellationToken cancellationToken)
{
var entity = await _context.Customers
.SingleOrDefaultAsync(c => c.CustomerId == request.Id, cancellationToken);
if (entity == null)
{
throw new NotFoundException(nameof(Customer), request.Id);
}
entity.Address = request.Address;
entity.City = request.City;
entity.CompanyName = request.CompanyName;
entity.ContactName = request.ContactName;
entity.ContactTitle = request.ContactTitle;
entity.Country = request.Country;
entity.Fax = request.Fax;
entity.Phone = request.Phone;
entity.PostalCode = request.PostalCode;
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}