private async Task <DomainValidationResult <ITransaction> > CreateChargeTransactionAsync(
ITokenAccount account,
Token token,
TransactionMetadata?metadata = null,
CancellationToken cancellationToken = default
)
{
var result = new DomainValidationResult <ITransaction>();
if (!account.HaveSufficientMoney(token))
{
result.AddFailedPreconditionError("Insufficient funds.");
}
if (result.IsValid)
{
var transaction = account.Charge(token, metadata);
await _accountRepository.CommitAsync(true, cancellationToken);
return(transaction.Cast <Transaction>());
}
return(result);
}
private async Task <DomainValidationResult <ITransaction> > CreateDepositTransactionAsync(
ITokenAccount account,
Token token,
CancellationToken cancellationToken = default
)
{
var result = new DomainValidationResult <ITransaction>();
var transactionBundles = await this.FetchTransactionBundlesAsync(EnumTransactionType.Deposit, EnumCurrencyType.Token);
if (transactionBundles.All(deposit => deposit.Currency.Amount != token.Amount))
{
result.AddFailedPreconditionError(
$"The amount of {nameof(Token)} is invalid. These are valid amounts: [{string.Join(", ", transactionBundles.Select(deposit => deposit.Currency.Amount))}].");
}
if (!account.IsDepositAvailable())
{
result.AddFailedPreconditionError(
$"Buying tokens is unavailable until {account.LastDeposit?.Add(TokenAccountDecorator.DepositInterval)}. For security reason we limit the number of financial transaction that can be done in {TokenAccountDecorator.DepositInterval.TotalHours} hours.");
}
if (result.IsValid)
{
var transaction = account.Deposit(token);
await _accountRepository.CommitAsync(true, cancellationToken);
return(transaction.Cast <Transaction>());
}
return(result);
}
private async Task <DomainValidationResult <ITransaction> > CreateTransactionAsync(
ITokenAccount account,
Token token,
TransactionType type,
TransactionMetadata?metadata = null,
CancellationToken cancellationToken = default
)
{
if (type == TransactionType.Deposit)
{
return(await this.CreateDepositTransactionAsync(account, token, cancellationToken));
}
if (type == TransactionType.Charge)
{
return(await this.CreateChargeTransactionAsync(
account,
token,
metadata,
cancellationToken));
}
if (type == TransactionType.Payout)
{
return(await this.CreatePayoutTransactionAsync(
account,
token,
metadata,
cancellationToken));
}
if (type == TransactionType.Promotion)
{
return(await this.CreatePromotionTransactionAsync(
account,
token,
metadata,
cancellationToken));
}
return(DomainValidationResult <ITransaction> .Failure("Unsupported transaction type for token currency."));
}
private async Task <DomainValidationResult <ITransaction> > CreatePromotionTransactionAsync(
ITokenAccount account,
Token token,
TransactionMetadata?metadata = null,
CancellationToken cancellationToken = default
)
{
var result = new DomainValidationResult <ITransaction>();
if (result.IsValid)
{
var transaction = account.Promotion(token, metadata);
transaction.MarkAsSucceeded();
await _accountRepository.CommitAsync(true, cancellationToken);
return(transaction.Cast <Transaction>());
}
return(result);
}