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

namespace DominionBase.Cards.Menagerie
{
	public class Displace : Card
	{
		public Displace()
			: base(Categories.Action, Source.Menagerie, Location.Kingdom, Traits.Exiler | Traits.Gainer | Traits.RemoveFromHand | Traits.Terminal)
		{
			BaseCost = new Cost(5);
		}

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

			var choiceExile = new Choice(Resource.ChooseCardToExile, this, player.Hand, ChoiceOutcome.Trash, player);
			var resultExile = player.MakeChoice(choiceExile);
			if (resultExile.Cards.Any())
			{
				var exiledCard = resultExile.Cards[0];

				player.AddCardInto(TypeClass.Exile, player.RetrieveCardFrom(DeckLocation.Hand, exiledCard));
				player._Game.SendMessage(player, this, "Exile", exiledCard);

				var exiledCardCost = player._Game.ComputeCost(exiledCard);
				var gainableSupplies = new SupplyCollection(player._Game.Table.TableEntities.FindAll<ISupply>(
					supply => supply.CanGain() 
						&& supply.CurrentCost <= exiledCardCost + new Coin(2)
						&& supply.TopCard.Name != exiledCard.Name
					));

				var choice = new Choice(Resource.GainCard, this, gainableSupplies, ChoiceOutcome.Gain, player, false);
				var result = player.MakeChoice(choice);
				if (result.Supply != null)
					player.Gain(result.Supply, this);
			}
			else
			{
				player._Game.SendMessage(player, this, "Exile");
			}
		}
	}
}