public void Create(Customer customer, string createdById = null)
{
// If the customer created by Id does not equal null, but the id specified does not exist
if (customer.CreatedById != null &&
!_context.Users.Any(e => e.Id == customer.CreatedById))
{
throw new UserNotFoundException();
}
// Assign the Slug
customer.Slug = customer.CompanyName.GenerateSlug();
// If the Company Name Or Slug already exist, throw Exception
if (_context.Customers.Any(e => e.CompanyName.Equals(customer.CompanyName)
|| e.Slug.Equals(customer.Slug)))
{
throw new CompanyAlreadyExistsException();
}
// Assign the created by id
customer.CreatedById = createdById;
// Add to the table
_context.Customers.Add(customer);
// Save changes
_context.SaveChanges();
}
public void EditCustomer(Customer customer)
{
// Attach to context if for some reason it is not
if (_context.Entry(customer).State == EntityState.Detached)
_context.Customers.Attach(customer);
// Reslugify
// TODO find a way to see if the CompanyName is actually a dirty field
customer.Slug = customer.CompanyName.GenerateSlug();
// Check to see if another company has the same company name
if (DoesCustomerExist(customer))
{
throw new CompanyAlreadyExistsException();
}
// Make it dirty
_context.Entry(customer).State = EntityState.Modified;
_context.SaveChanges();
}
public OrderCreateViewModel OrderCreateFactory(
Customer customer,
List<Product> products,
OrderCreateViewModel vm = null)
{
// Check if the view model exists, if not create new one
vm = vm ?? new OrderCreateViewModel();
// Assign the order details if it exists or create new one
vm.Order = vm.Order ?? new OrderViewModel();
// Products
var productsList = products.Select(
e => new OrderProductViewModel
{
ProductId = e.ProductId,
ProductName = e.ProductName,
Price = e.UnitPrice,
SupplierName = e.Supplier.CompanyName,
Qauntity = 0
}).ToList();
// Reassign products with proper quanities
vm.Products?.ForEach(e =>
{
if (e.Qauntity <= 0) return;
var orderProductViewModel = productsList.FirstOrDefault(x => x.ProductId == e.ProductId);
if (orderProductViewModel != null)
orderProductViewModel.Qauntity = e.Qauntity;
});
vm.Products = productsList;
vm.Customer = customer;
return vm;
}
&& e.CustomerId != customer.CustomerId); // With Different ID
public async Task DeleteCustomerAsync(Customer customer)
{
// Something went wrong, throw exception
if (customer == null) throw new CustomerNotFoundException();
_context.Customers.Remove(customer);
await _context.SaveChangesAsync();
}
private bool DoesCustomerExist(Customer customer) => _context.Customers.Any(e =>
(e.CompanyName.Equals(customer.CompanyName) // Same Company Name
|| e.Slug.Equals(customer.Slug)) // Or Some Slug
&& e.CustomerId != customer.CustomerId); // With Different ID
