public async Task <Unit> Handle(ConvertMoneyRequest request, CancellationToken cancellationToken)
{
if (request.SourceCurrencyAmount <= 0)
{
throw new BusinessException("Сумма должна быть дольше нуля.");
}
var sourceAccount = await _currencyAccountRepository.GetByIdAsync(request.SourceAccountId);
var destinationAccount = await _currencyAccountRepository.GetByIdAsync(request.DestinationAccountId);
if (sourceAccount.Balance < request.SourceCurrencyAmount)
{
throw new BusinessException($"На счете {sourceAccount.CurrencyCode} недостаточно средств.");
}
var conversionRate = await _conversionRateProvider.GetConversionRateAsync(sourceAccount.CurrencyCode, destinationAccount.CurrencyCode);
sourceAccount.Balance -= request.SourceCurrencyAmount;
destinationAccount.Balance += request.SourceCurrencyAmount * conversionRate;
_currencyAccountRepository.Save(sourceAccount);
_currencyAccountRepository.Save(destinationAccount);
await _unitOfWork.CommitAsync(cancellationToken);
return(Unit.Value);
}
public async Task <int> Handle(CreateWalletRequest request, CancellationToken cancellationToken)
{
var notSupportedCurrencyCodes = request.AvailableCurrencyCodes.Where(c => !ConversionRateProvider.SupportedCurrencyCodes.Contains(c)).ToArray();
if (notSupportedCurrencyCodes.Any())
{
throw new BusinessException($"Не удалось создать кошелек. Невозможно создать кошелек со счетами для валют: {notSupportedCurrencyCodes.ToCommaSeparated()}.");
}
var wallet = new Data.Domain.Wallet
{
UserId = request.UserId
};
_walletRepository.Save(wallet);
await _unitOfWork.CommitAsync(cancellationToken);
var currencyAccounts = request.AvailableCurrencyCodes.Select(c => new CurrencyAccount
{
CurrencyCode = c,
Balance = 0,
WalletId = wallet.Id
});
foreach (var currencyAccount in currencyAccounts)
{
_currencyAccountRepository.Save(currencyAccount);
}
await _unitOfWork.CommitAsync(cancellationToken);
return(wallet.Id);
}
public async Task <Unit> Handle(DepositMoneyRequest request, CancellationToken cancellationToken)
{
if (request.Amount <= 0)
{
throw new BusinessException("Сумма должна быть дольше нуля.");
}
var account = await _currencyAccountRepository.GetByIdAsync(request.CurrencyAccountId);
account.Balance += request.Amount;
_currencyAccountRepository.Save(account);
await _unitOfWork.CommitAsync(cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(WithdrawMoneyRequest request, CancellationToken cancellationToken)
{
if (request.Amount <= 0)
{
throw new BusinessException("Сумма должна быть дольше нуля.");
}
var account = await _currencyAccountRepository.GetByIdAsync(request.CurrencyAccountId);
if (account.Balance < request.Amount)
{
throw new BusinessException($"На счете {account.CurrencyCode} недостаточно средств.");
}
account.Balance -= request.Amount;
_currencyAccountRepository.Save(account);
await _unitOfWork.CommitAsync(cancellationToken);
return(Unit.Value);
}