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

namespace DominionBase.Cards.Nocturne
{
	public class Monastery : Card
	{
		public Monastery()
			: base(Categories.Night, Source.Nocturne, Location.Kingdom, Traits.DeckReduction | Traits.RemoveCurses | Traits.RemoveFromHand | Traits.Trasher)
		{
			BaseCost = new Cost(2);
		}

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

			// This can possibly change on an on-trash ability, so store it first.
			int gainedCount = player.CurrentTurn.CardsGained.Count;
			for (var i = 0; i < gainedCount; i++)
			{
				var trashables = new ItemCollection<Card>(player.Hand) { new Universal.Blank() };
				trashables.AddRange(player.InPlayAndSetAside[c => c is Universal.Copper]);
				var choiceTrash = new Choice(Resource.ChooseToTrashOptional, this, trashables, ChoiceOutcome.Trash, player, minimum: 0);
				var resultTrash = player.MakeChoice(choiceTrash);

				if (resultTrash.Cards.Any())
				{
					var cardToTrash = player.RetrieveCardFrom(player.Hand.Contains(resultTrash.Cards[0]) ? DeckLocation.Hand : DeckLocation.InPlayAndSetAside, resultTrash.Cards[0]);
					player.Trash(this, cardToTrash);
				}
				else
				{
					// If no card was trashed, break out of the loop and stop offering to trash
					break;
				}
			}
		}
	}
}