// The buyer deposited the coin into the coin acceptor (deposit)
public async Task AddAmountDepositAsync(CoinDTO coin, Guid userId)
{
if (coin == null)
{
throw new NullReferenceException("Coin is null");
}
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
try
{
// Increase the amount of the user's deposit
await _userDepositRepository.AddAmountDepositAsync((int)coin.TypeCoin, userId);
// we take a coin from the user
await _purseRepository.RemoveCoinAsync(userId, coin.TypeCoin);
// TODO: To verify a transaction, you need to uncomment this line ->
// throw new Exception("To verify a transaction, you need to uncomment this line.");
// give a coin to VM
await _vendingMachineService.AddCoinAsync(coin.TypeCoin);
// Commit transaction if all commands succeed, transaction will auto-rollback
// when disposed if either commands fails
scope.Complete();
}
catch (System.Exception)
{
// TODO: Handle failure
throw new ApplicationException("The problem of adding a user deposit amount!");
}
};
}