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

namespace DominionBase.Cards.Menagerie
{
	public class Hostelry : Card
	{
		public Hostelry()
			: base(Categories.Action, Source.Menagerie, Location.Kingdom, Traits.Cantrip | Traits.Discard | Traits.Gainer | Traits.IncludesExtraPiles | Traits.PlusAction | Traits.PlusCard | Traits.PlusMultipleActions | Traits.ReactToGain)
		{
			BaseCost = new Cost(4);
			Benefit.Cards = 1;
			Benefit.Actions = 2;
		}

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

			foreach (var player in game.Players)
				player.CardGained += Player_CardGained;
		}

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

			Horse.SetupSupply(game);
		}

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

			foreach (var player in game.Players)
				player.CardGained -= Player_CardGained;
		}

		private void Player_CardGained(object sender, Players.CardGainEventArgs e)
		{
			var player = sender as IPlayer;
			var key = TypeClass.Hostelry.ToString();

			// This is not the card you are looking for
			if (e.Card != this || e.Resolvers.ContainsKey(key) || e.HandledBy.Contains(this) || e.IsLostTrackOf)
				return;

			e.Resolvers[key] = new CardGainResolver(player, this, "ResolveCard", $"Resolve {Name}", Player_GainHostelry, true);
		}

		internal void Player_GainHostelry(IPlayer player, ref Players.CardGainEventArgs e)
		{
			var treasureCards = player.Hand[Categories.Treasure];
			var choice = new Choice(Resource.DiscardTreasuresForHorses, this, treasureCards, ChoiceOutcome.Discard, player, minimum: 0, maximum: treasureCards.Count);
			var result = player.MakeChoice(choice);

			player.AddCardsInto(DeckLocation.Revealed, result.Cards);
			player.Discard(DeckLocation.Hand, player.RetrieveCardsFrom(DeckLocation.Revealed, result.Cards));

			if (result.Cards.Count > 0)
				player.Gain((ISupply)player._Game.Table.SpecialPiles[TypeClass.Horse], this, result.Cards.Count);

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