/// <summary>
/// Executes a buy stock transaction
/// </summary>
/// <param name="stvm"></param>
public void BuyStock(StockTransactionViewModel stvm)
{
//charge current stock trading account
_accounts[0].Balance -= stvm.CurrentPricePerShare * stvm.Quantity;
//add a new position
_stockPositions.Add(new StockPositionViewModel
{
PricePaid = stvm.CurrentPricePerShare,
Quantity = stvm.Quantity,
StockTickerDetails = _stockDetailsDictionary[stvm.Symbol]
});
//insert a transaction into history
_stockTransactionHistory.Add(stvm);
}
/// <summary>
/// Executes a sell stock transaction
/// </summary>
/// <param name="stvm"></param>
public void SellStock(StockTransactionViewModel stvm)
{
//charge current stock trading account
_accounts[0].Balance += stvm.CurrentPricePerShare * stvm.Quantity;
//set the final price the transaction was executed for
stvm.PricePerShare = stvm.CurrentPricePerShare;
//remove a new position
StockPositionViewModel stockToSell = _stockPositions.First(x => x.ID == stvm.StockPosition.ID);
if (stockToSell.Quantity == stvm.Quantity)
{
_stockPositions.Remove(stockToSell);
}
else
{
stockToSell.Quantity -= stvm.Quantity;
}
//insert a transaction into history
_stockTransactionHistory.Add(stvm);
}