public string AddNewClient(string clientName, string address, int districtID)
{
string message = "Client creation is unsuccessful.";
//USer existance check
if (IsUserNameExist(clientName))
{
return(message + "\n" + "This user already exists");
}
// username password validity check
string IsValidName = ValidateUserInput(clientName, "client name");
string IsValidLocation = ValidateUserInput(address, "Location");
if ((IsValidName.Equals("ValidInput")) && (IsValidLocation.Equals("ValidInput")))
{
int result = aClientGateway.AddNewClient(clientName, address, districtID);
if (result > 0)
{
message = "Client creation is successful.";
}
return(message);
}
if (!(IsValidName.Equals("ValidInput")))
{
return(message + "\n" + IsValidName);
}
else
{
return(message + "\n" + IsValidLocation);
}
}