public IEnumerable <AggregateEvent> TransferMoney(TransferMoneyCommand command)
{
if (this.CurrentBalance < command.Amount)
{
throw new InvalidOperationException($"Account {AccountNumber} does not have enough balance to execute the transaction.");
}
if (this.AccountState != AccountState.Created)
{
throw new InvalidOperationException($"Account {AccountNumber} is not available.");
}
var destinationAccountEvents = this.EventStore.GetAggregateEvents(CreateAggregateId(command.DestinationAccountNumber));
var destinationAccount = new Account(this.EventStore, destinationAccountEvents);
if (destinationAccount.AccountState != AccountState.Created)
{
throw new InvalidOperationException($"Account {destinationAccount.AccountNumber} is not available.");
}
var aggregateEvent = new BalanceIncreased(command.DestinationAccountNumber, ++destinationAccount.SequenceNumber, command.Amount);
Handle(aggregateEvent);
return(new AggregateEvent[]
{
aggregateEvent,
new BalanceDecreased(command.SourceAccountNumber, ++this.SequenceNumber, command.Amount)
});
}
public IEnumerable <AggregateEvent> MakeDeposit(MakeDepositCommand command)
{
if (this.AccountState != AccountState.Created)
{
throw new InvalidOperationException($"Account {AccountNumber} is not available.");
}
var aggregateEvent = new BalanceIncreased(command.AccountNumber, ++SequenceNumber, command.Amount);
Handle(aggregateEvent);
return(new AggregateEvent[]
{
aggregateEvent
});
}
public void Handle(BalanceIncreased request)
{
this.CurrentBalance += request.Amount;
this.SequenceNumber = request.SequenceNumber;
}