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

namespace DominionBase.Cards.Nocturne
{
	public class NightWatchman : Card
	{
		public NightWatchman()
			: base(Categories.Night, Source.Nocturne, Location.Kingdom, Traits.CardOrdering | Traits.Discard | Traits.ReactToGain)
		{
			BaseCost = new Cost(3);
		}

		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 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.NightWatchman.ToString();

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

			e.Resolvers[key] = new CardGainResolver(player, this, "PutIntoHand", $"Put {PhysicalCard} into your hand", Player_GainNightWatchman, true);
		}

		internal void Player_GainNightWatchman(IPlayer player, ref Players.CardGainEventArgs e)
		{
			e.Cancelled = true;
			e.IsLostTrackOf = true;
			e.Location = DeckLocation.Hand;

			e.HandledBy.Add(this);
		}

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

			player.Draw(5, DeckLocation.Private);

			var choiceDiscard = new Choice(Resource.ChooseDiscards, this, player.Private, ChoiceOutcome.Discard, player, minimum: 0, maximum: player.Private.Count);
			var resultDiscard = player.MakeChoice(choiceDiscard);
			player.Discard(DeckLocation.Private, resultDiscard.Cards);

			var replaceChoice = new Choice(Resource.ChooseOrderToTopdeck, this, player.Private, ChoiceOutcome.Select, player, isOrdered: true, minimum: player.Private.Count, maximum: player.Private.Count);
			var replaceResult = player.MakeChoice(replaceChoice);
			player.AddCardsToDeck(player.RetrieveCardsFrom(DeckLocation.Private, replaceResult.Cards), DeckPosition.Top);
		}
	}
}