/// <summary>
/// get the value of a single position
/// </summary>
/// <param name="position">position</param>
/// <param name="quoteFeed">quote feed</param>
/// <returns>value</returns>
public static decimal PositionValue(Position position, IQuoteFeed quoteFeed)
{
Contract.Requires(position != null);
Contract.Requires(quoteFeed != null);
Quote lastQuote = quoteFeed.GetQuote(position.Symbol);
return(lastQuote.Price * position.Quantity);
}
/// <summary>
/// update the prices in the database
/// </summary>
/// <param name="database">database</param>
/// <param name="quoteFeed">quote feed</param>
private static void UpdatePrices(IDatabase database, IQuoteFeed quoteFeed)
{
List <string> symbols = database.GetSymbols();
foreach (string symbol in symbols)
{
Quote quote = quoteFeed.GetQuote(symbol);
database.SaveQuote(quote);
}
}
/// <summary>
/// get the value of an account
/// </summary>
/// <param name="account">account</param>
/// <param name="quoteFeed">quote feed</param>
/// <returns>value</returns>
public static decimal AccountValue(Account account, IQuoteFeed quoteFeed)
{
Contract.Requires(account?.Positions != null);
return(account.Positions.Values.Aggregate(0m, (total, position) => total + PositionValue(position, quoteFeed)));
}
