using System;
using System.Reflection;
using sharp.tradebot;

namespace TradeBot
{
	public class BotSpecification : MarshalByRefObject
	{
		public string DllPath { get; private set; }
		public string ClassName { get; private set; }
		public object[] Arguments { get; private set; }

		public string BotSpec { get { return string.Format("{0}:{1}",ClassName,DllPath); } }

		public bool IsLoaded
		{
			get
			{
				return currentInstance != null;
			}
		}
		public TradingBot CurrentInstance
		{
			get {
				return this.currentInstance;
			}
		}

		AppDomain Domain;
		Assembly Assembly;
		Type ClassType;

		TradingBot currentInstance;

		public BotSpecification(string dllpath,string className,object[] arguments)
		{
			DllPath = dllpath;
			ClassName = className;
		}

		public void Unload(){
			currentInstance = null;
			ClassType = null;
			Assembly = null;
			AppDomain.Unload(Domain);
			Domain = null;
		}
		public void Load(){
			if (Domain != null){
				Unload();
			}

			Domain = AppDomain.CreateDomain(DllPath);
			Assembly = Domain.Load(DllPath);
			ClassType = Assembly.GetType(ClassName);
		}

		TradingBot TradingBot {
			get 
			{
				if (currentInstance == null){
					currentInstance = (TradingBot)Activator.CreateInstance(ClassType);
				}
				return currentInstance;
			}
		}

	}
}