using DominionBase.Enums;
using System.Diagnostics.Contracts;

namespace DominionBase.Cards.Menagerie
{
	public class Destrier : Card
	{
		public Destrier()
			: base(Categories.Action, Source.Menagerie, Location.Kingdom, Traits.Cantrip | Traits.ModifyCost | Traits.PlusAction | Traits.PlusCard)
		{
			BaseCost = new Cost(6, special: true);
			Benefit.Cards = 2;
			Benefit.Actions = 1;
		}

		public override void SetupCard(IGame game)
		{
			Contract.Requires(game != null, "game cannot be null");
			base.SetupCard(game);

			game.CostCompute += Destrier_CostCompute;
		}

		public override void TearDown(IGame game)
		{
			Contract.Requires(game != null, "game cannot be null");
			base.TearDown(game);

			game.CostCompute -= Destrier_CostCompute;
		}

		private void Destrier_CostCompute(object sender, CostComputeEventArgs e)
		{
			if (e.Card != this)
				return;

			var game = sender as IGame;
			if (game.ActivePlayer != null && game.ActivePlayer.CurrentTurn != null)
				e.Cost.Coin -= game.ActivePlayer.CurrentTurn.CardsGained.Count;
		}
	}
}