public async Task <ActionResult <UserBalance> > GetBalance()
{
var balance = await _balances.GetUserBalanceAsync(UserId);
if (balance != null)
{
return(Ok(balance));
}
return(BadRequest(new { message = $"Could not get user`s wallet balance" }));
}
public async Task <Transaction> CommitTransactionAsync(Transaction transaction)
{
if (transaction.RecipientId == default)
{
return(await RejectTransactionAsync(transaction));
}
UserBalance senderBalance = null;
decimal senderAmount = 0;
if (transaction.SenderId != null)
{
senderBalance = await _balances.GetUserBalanceAsync((Guid)transaction.SenderId);
senderAmount = senderBalance.Amount;
}
var recipientBalance = await _balances.GetUserBalanceAsync(transaction.RecipientId);
decimal recipientAmount = 0;
if (recipientBalance != null)
{
recipientAmount = recipientBalance.Amount;
}
if (senderBalance != null)
{
if (senderAmount - transaction.Amount < 0)
{
return(await RejectTransactionAsync(transaction));
}
}
using var context = _contextFactory.Invoke();
using var dbTransaction = context.Database.BeginTransaction();
try
{
if (senderBalance != null)
{
await _balances.UpdateUserBalanceAsync((Guid)transaction.SenderId, transaction.Id, senderAmount - transaction.Amount);
}
await _balances.UpdateUserBalanceAsync(transaction.RecipientId, transaction.Id, recipientAmount + transaction.Amount);
context.Attach(transaction);
transaction.StatusDate = DateTime.Now;
transaction.Status = TransactionStatuses.Success;
await context.SaveChangesAsync();
dbTransaction.Commit();
return(transaction);
}
catch (Exception)
{
dbTransaction.Rollback();
return(await RejectTransactionAsync(transaction));
}
}
