using System;
using System.Collections;
using System.Collections.Generic; 
using QuantConnect.Securities;  
using QuantConnect.Models;   

namespace QuantConnect { 
    /*************************************************************************** 
    *   SECURITY HOLDINGS CLASS
        SecurityHolding class holds an individual Security fee, quantity and 
        average price information. It is the primary storage for tracking trades 
        profit and loss. You can access it through the public SecurityManager 
        Collection Securities or the public adaptor Portfolio.
        
        THIS IS AN EXAMPLE ALGORITHM FROM THE QUANTCONNECT'S API DOCUMENTATION
    ***************************************************************************/
    public class SecurityHoldingExample : QCAlgorithm
    {
        string[] securities = {"IBM", "AOL", "MSFT", "AAPL"};
        public override void Initialize()
        {
            foreach(var security in securities)
            {
                AddSecurity(SecurityType.Equity, security, Resolution.Minute);
            }
            SetCash(40000);
            SetStartDate(2010, 3, 3);         
            SetEndDate(2012, 3, 3); 
        }
        
       //Example of Holdings Class Usage:
        public void OnData(TradeBars securityData)
        {
            try
            {
                //Build a portfolio which 150 stocks of each equity
                if (!Portfolio.HoldStock)
                {
                    foreach (var security in securities)
                    {
                        Order(security, 150);
                    }
                }
            	//Accessing with Public Securities Object, using Holdings property:
            	foreach(string symbol in Securities.Keys)
            	{
            		if (Securities[symbol].Holdings.UnrealizedProfit > 0)
            		{
            			Order(symbol, -Securities[symbol].Holdings.Quantity);
            		}
            	}
            	//Using Portfolio Object: If we have IBM stocks & an unrealized profit:
            	if (Portfolio["IBM"].UnrealizedProfit > 0 && Portfolio["IBM"].HoldStock) 
            	{
            	    Order("IBM", -Securities["IBM"].Holdings.Quantity); 
            	}
            }
            catch (Exception err) 
            {
                Error("OnData Err: " + err.Message);    
            }
        }
    }
}