using System;

using System.Collections.Generic;

using System.Linq;

using System.Configuration;

using System.Text;

using System.Threading.Tasks;

using JTacticalSim.API;

using JTacticalSim.API.Component;



namespace JTacticalSim.Component.Battle

{

	/// <summary>

	/// Represents a full round of battle 

	/// </summary>

	public class Round : GameComponentBase, IRound

	{

		public event BattleRoundStart RoundStart;

		public event BattleRoundEnd RoundEnd;

		public event BattleSkirmishStart SkirmishStart;

		public event BattleSkirmishEnd SkirmishEnd;



		public ISkirmish CurrentSkirmish { get; private set; }

		private IBattle _battle { get; set; }

		public List<ISkirmish> Skirmishes { get; private set; }



		public Round(IBattle battle)

		{

			_battle = battle;

			Skirmishes = new List<ISkirmish>();

		}



		public void AddSkirmish(ISkirmish skirmish)

		{

			Skirmishes.Add(skirmish);

			skirmish.SkirmishEnd += SkirmishEnded;

			skirmish.SkirmishStart += SkirmishStarted;

		}



		public IEnumerable<IUnit> GetDefeatedUnits() { return Skirmishes.SelectMany(s => s.Destroyed); }

		

		public void DoBattle() 

		{

			On_RoundStart(new EventArgs());

			Skirmishes.ForEach(s => s.DoBattle());

			On_RoundEnd(new EventArgs());

		}



	// Event Handlers



		public void On_RoundStart(EventArgs e)

		{

			if (RoundStart != null) RoundStart(this, e);

		}



		public void On_RoundEnd(EventArgs e)

		{

			if (RoundEnd != null) RoundEnd(this, e);

		}



		



		/// <summary>

		/// Pass up the skirmish so we can act at the UI level

		/// </summary>

		/// <param name="sender"></param>

		/// <param name="e"></param>

		public void SkirmishEnded(object sender, EventArgs e)

		{

			CurrentSkirmish = null;



			if (SkirmishEnd != null) SkirmishEnd(this, e);

		}



		/// <summary>

		/// Pass up the skirmish so we can act at the UI level

		/// </summary>

		/// <param name="sender"></param>

		/// <param name="e"></param>

		public void SkirmishStarted(object sender, EventArgs e)

		{

			// Set the current skirmish

			CurrentSkirmish = ((ISkirmish)sender);



			if (SkirmishStart != null) SkirmishStart(this, e);

		}

	}

}