public int Handle(ICommand <int> command)
{
var insertUserCmd = command as InsertUserCommand;
var errorList = new Dictionary <string, string>();
//Validation - put this here to avoid having code check ModelValidationResult in module. Just a personal preference
var validator = new UserValidator();
validator.ValidateAndThrow(insertUserCmd.User);
//Basic business logic
var existingPerson = DB.Data.FirstOrDefault(x => x.EmailAddress == insertUserCmd.User.EmailAddress);
if (existingPerson != null)
{
errorList.Add("EmailAddress", "User already exists");
}
if (errorList.Any())
{
var validationErrors = new List <ValidationFailure>();
foreach (var item in errorList)
{
validationErrors.Add(new ValidationFailure(item.Key, item.Value));
}
throw new ValidationException(validationErrors);
}
//Other business logic that might do checks and return errors
var newid = DB.Data.Last().Id + 1;
insertUserCmd.User.Id = newid;
DB.Data.Add(insertUserCmd.User);
return(newid);
}
public int Handle(ICommand <int> command)
{
var updateUserCmd = command as UpdateUserCommand;
//Validation
var validator = new UserValidator();
validator.ValidateAndThrow(updateUserCmd.User);
var currentUser = DB.Data.FirstOrDefault(x => x.Id == updateUserCmd.User.Id);
//Idempotent!!
if (currentUser == null)
{
throw new InvalidOperationException("User not found");
}
currentUser.FirstName = updateUserCmd.User.FirstName;
currentUser.LastName = updateUserCmd.User.LastName;
currentUser.EmailAddress = updateUserCmd.User.EmailAddress;
//Rows affected
return(1);
}
