public ValidationResult <TransactionModel> Validate(TransactionModel transaction)
{
var result = new ValidationResult <TransactionModel>(transaction);
if (string.IsNullOrEmpty(transaction.Id))
{
result.AddEmptyFieldError(nameof(transaction.Id));
}
else if (transaction.Id.Length > 50)
{
result.AddFieldError(nameof(transaction.Id), $"Transaction Identificator {transaction.Id} should be less than 50 length");
}
if (transaction.Amount == default)
{
result.AddEmptyFieldError(nameof(transaction.Amount));
}
if (string.IsNullOrEmpty(transaction.CurrencyCode))
{
result.AddEmptyFieldError(nameof(transaction.CurrencyCode));
}
if (transaction.TransactionDate == default)
{
result.AddFieldError(nameof(transaction.TransactionDate), $"Transaction date is invalid or empty");
}
if (transaction.Status == TransactionStatus.None)
{
result.AddEmptyFieldError(nameof(transaction.Status));
}
result.Message = result.IsError ? "Validation didn’t pass" : "Validation pass";
return(result);
}