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

namespace DominionBase.Cards.Renaissance
{
	public class StarChart : Project
	{
		public StarChart()
			: base(Source.Renaissance, 3, Traits.CardOrdering)
		{
		}

		public override void TearDown(IGame game)
		{
			foreach (var pp in PurchasedPlayers)
				pp.Shuffling -= Player_Shuffling;
			base.TearDown(game);
		}

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

			var pp = PurchasedPlayers.Find(p => p == player);
			if (pp != null)
				pp.Shuffling -= Player_Shuffling;
			else
				PurchasedPlayers.Add(player);
			player.Shuffling += Player_Shuffling;
		}

		private void Player_Shuffling(object sender, ShuffleEventArgs e)
		{
			if (e.HandledBy.Contains(Type) || e.Resolvers.ContainsKey(Type))
				return;

			e.Resolvers[Type] = new ShuffleResolver(e.Player, this, $"Resolve {Name}", (IPlayer player, ref ShuffleEventArgs sea) =>
			{
				var deck = e.ShuffleCards.OfType<Card>();

				var choiceTop = new Choice("Cards are being shuffled. You may choose one to go on top", this, deck, ChoiceOutcome.Select, e.Player, minimum: 0, maximum: 1);
				var resultTop = e.Player.MakeChoice(choiceTop);

				if (resultTop.Cards.Any())
				{
					var toTop = resultTop.Cards[0];
					sea.ShuffleCards.Remove(toTop);
					e.Player.AddCardInto(DeckLocation.Deck, toTop, DeckPosition.Bottom);
				}

				e.HandledBy.Add(Type);
			}, false);
		}
	}
}