public async Task <ActionResult <string> > Post([FromBody] TransactionToAdd transaction)
{
var newTransaction = transactionsService.PerformNewDeal(transaction);
if (newTransaction == null)
{
return(new ActionResult <string>("Cannot complete deal"));
}
return(new ActionResult <string>("New deal added"));
}
public Transaction PerformNewDeal(TransactionToAdd transaction)
{
if (transaction == null || transaction.SellerId == 0 || transaction.BuyerId == 0 || transaction.ShareId == 0 || transaction.Quantity == 0 || transaction.SellerId == transaction.BuyerId)
{
return(null);
}
var sellerToChange = tradersRepository.GetTrader(transaction.SellerId);
var buyerToChange = tradersRepository.GetTrader(transaction.BuyerId);
var sellerShareRecordToChange = portfoliosRepository.GetPortfolio(transaction.SellerId, transaction.ShareId);
var sharePrice = sharesRepository.GetPrice(transaction.ShareId);
if (sellerToChange == null || buyerToChange == null || sellerShareRecordToChange == null)
{
return(null);
}
tradersRepository.AddToBalance(sellerToChange.TraderId, sharePrice * transaction.Quantity);
tradersRepository.SubtractFromBalance(buyerToChange.TraderId, sharePrice * transaction.Quantity);
portfoliosRepository.RemoveShares(sellerShareRecordToChange, transaction.Quantity);
if (sellerShareRecordToChange.Quantity == 0)
{
portfoliosRepository.RemovePortfolio(sellerShareRecordToChange);
}
if (portfoliosRepository.GetPortfoliosCount(transaction.BuyerId, transaction.ShareId) > 0)
{
var buyerShareRecordToChange = portfoliosRepository.GetPortfolio(transaction.BuyerId, transaction.ShareId);
if (buyerShareRecordToChange != null)
{
portfoliosRepository.AddShares(buyerShareRecordToChange, transaction.Quantity);
}
}
else
{
portfoliosRepository.AddPortfolio(transaction.BuyerId, transaction.ShareId, transaction.Quantity);
}
var newTransaction = transactionsRepository.AddTransaction(transaction.BuyerId, transaction.SellerId, transaction.ShareId, sharePrice, transaction.Quantity);
return(newTransaction);
}
