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

namespace DominionBase.Cards.Menagerie
{
	public class WayOfTheFrog : Way
	{
		private readonly List<Card> triggers = new List<Card>();

		public WayOfTheFrog()
			: base(Source.Menagerie, Traits.CardOrdering | Traits.PlusAction)
		{
			Benefit.Actions = 1;
		}

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

			if (!triggers.Any())
				player.CardsDiscarding += Player_CardsDiscarding;
			triggers.Add(playedCard);
		}

		private void Player_CardsDiscarding(object sender, CardsDiscardEventArgs e)
		{
			if (e.FromLocation != DeckLocation.InPlay && e.FromLocation != DeckLocation.SetAside && e.FromLocation != DeckLocation.InPlayAndSetAside)
				return;

			var player = sender as IPlayer;

			var matchingCards = e.Cards.Where(c => triggers.Contains(c)).ToList();
			if (!matchingCards.Any())
			{
				player.CardsDiscarding -= Player_CardsDiscarding;
				return;
			}

			foreach (var matchingCard in matchingCards)
			{
				e.AddResolver(Type, matchingCard.Type,
					new CardsDiscardResolver(sender as IPlayer, this,
						Resource.PutCardOnYourDeck.Replace("{card}", matchingCard.ToString()),
						(IPlayer playerAction, ref CardsDiscardEventArgs eAction) =>
							{
								e.Cards.Remove(matchingCard);
								var thisCard = playerAction.RetrieveCardFrom(playerAction.InPlay.Contains(matchingCard) ? DeckLocation.InPlay : DeckLocation.SetAside, matchingCard);
								playerAction.AddCardToDeck(thisCard, DeckPosition.Top);

								triggers.Remove(matchingCard);
							},
						true)
				);
			}
		}
	}
}