using DominionBase.Enums;
using DominionBase.Piles;
using DominionBase.Players;
using System.Diagnostics.Contracts;
using System.Linq;

namespace DominionBase.Cards.Nocturne
{
	public class HauntedMirror : Card
	{
		public HauntedMirror()
			: base(Categories.Treasure | Categories.Heirloom, Source.Nocturne, Location.Invisible, Traits.Gainer | Traits.IncludesExtraPiles | Traits.PlusCoin | Traits.ReactToTrashing)
		{
			BaseCost = new Cost(0);
			Benefit.Currency.Coin.Value = 1;
		}

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

			Ghost.SetupSupply(game);

			foreach (var player in game.Players)
				player.Trashed += Player_Trashed;
		}

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

			foreach (var player in game.Players)
				player.Trashed -= Player_Trashed;
		}

		private void Player_Trashed(object sender, TrashEventArgs e)
		{
			var player = sender as IPlayer;

			// Already being processed or been handled -- don't need to process this one
			if (e.Resolvers.ContainsKey(TypeClass.HauntedMirror) || e.HandledBy.Contains(this))
				return;

			if (e.TrashedCards.Contains(PhysicalCard))
				e.Resolvers[TypeClass.HauntedMirror] = new TrashResolver(player, this, "Discard an Action to gain a Ghost", Player_DiscardAction, true);
		}

		internal void Player_DiscardAction(IPlayer player, ref TrashEventArgs e)
		{
			var choice = new Choice("Discard an Action card.", this, player.Hand[Categories.Action], ChoiceOutcome.Discard, player, minimum: 0);
			var result = player.MakeChoice(choice);
			if (result.Cards.Any())
			{
				player.Discard(DeckLocation.Hand, result.Cards);
				player.Gain((ISupply)player._Game.Table[TypeClass.Ghost], this);
			}

			e.HandledBy.Add(this);
		}
	}
}