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

namespace DominionBase.Cards.Menagerie
{
	public class Wayfarer : Card
	{
		public Wayfarer()
			: base(Categories.Action, Source.Menagerie, Location.Kingdom, Traits.Gainer | Traits.ModifyCost | Traits.NetCardDraw | Traits.PlusCard)
		{
			BaseCost = new Cost(6, special: true);
			Benefit.Cards = 3;
		}

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

			game.CostCompute += Wayfarer_CostCompute;
		}

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

			game.CostCompute -= Wayfarer_CostCompute;
		}

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

			var game = sender as IGame;
			bool filter(Card c) { return c.Name != Name; }
			if (game.ActivePlayer != null && game.ActivePlayer.CurrentTurn != null && game.ActivePlayer.CurrentTurn.CardsGained.Any(filter))
				e.Cost = game.ComputeCost(game.ActivePlayer.CurrentTurn.CardsGained.LastOrDefault(filter));
		}

		public override void FollowInstructions(IPlayer player)
		{
			Contract.Requires(player != null, "player cannot be null");
			base.FollowInstructions(player);

			var result = player.MakeChoice(Choice.CreateYesNoChoice(Resource.ShouldGainSilver, this, player));
			if (result.Options.FirstOrDefault() == Resource.Yes)
				player.Gain(player._Game.Table.Silver, this);
		}
	}
}