public async Task <Result <List <CustomerDto> > > GetCustomersAsync()
{
var customers = await _context.Customers.ToListAsync();
return(new Result <List <CustomerDto> >
{
Data = customers.Count > 0 ? CustomerDto.MapFromCustomer(customers): new List <CustomerDto>()
});
}
public async Task <Result <CustomerDto> > CreateCustomerAsync(CreateCustomerOptions options)
{
if (options == null)
{
return(new Result <CustomerDto>(ErrorCode.BadRequest, "Null options."));
}
if (string.IsNullOrWhiteSpace(options.FirstName) ||
string.IsNullOrWhiteSpace(options.LastName) ||
string.IsNullOrWhiteSpace(options.Address) ||
string.IsNullOrWhiteSpace(options.VatNumber))
{
return(new Result <CustomerDto>(ErrorCode.BadRequest, "Not all required customer options provided."));
}
if (options.VatNumber.Length > 9)
{
return(new Result <CustomerDto>(ErrorCode.BadRequest, "Invalid vat number."));
}
var customerWithSameVat = await _context.Customers.SingleOrDefaultAsync(cus => cus.VatNumber == options.VatNumber);
if (customerWithSameVat != null)
{
return(new Result <CustomerDto>(ErrorCode.Conflict, $"Customer with #{options.VatNumber} already exists."));
}
var newCustomer = new Customer
{
VatNumber = options.VatNumber,
FirstName = options.FirstName,
LastName = options.LastName,
Address = options.Address
};
await _context.Customers.AddAsync(newCustomer);
try
{
await _context.SaveChangesAsync();
}
catch (Exception ex)
{
_logger.LogError(ex.Message);
return(new Result <CustomerDto>(ErrorCode.InternalServerError, "Could not save customer."));
}
return(new Result <CustomerDto>
{
Data = CustomerDto.MapFromCustomer(newCustomer)
});
}
public async Task <Result <CustomerDto> > GetCustomerByIdAsync(int id)
{
if (id <= 0)
{
return(new Result <CustomerDto>(ErrorCode.BadRequest, "Id cannot be less than or equal to zero."));
}
var customer = await _context
.Customers
.SingleOrDefaultAsync(cus => cus.Id == id);
if (customer == null)
{
return(new Result <CustomerDto>(ErrorCode.NotFound, $"Customer with id #{id} not found."));
}
return(new Result <CustomerDto>
{
Data = CustomerDto.MapFromCustomer(customer)
});
}