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

namespace DominionBase.Cards.Renaissance
{
	public class Villain : Card
	{
		public Villain()
			: base(Categories.Action | Categories.Attack, Source.Renaissance, Location.Kingdom, Traits.AffectOthers | Traits.Component | Traits.Discard | Traits.PlusCoffer | Traits.Terminal)
		{
			BaseCost = new Cost(5);
			Benefit.Coffers = 2;
		}

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

			var enumerator = player._Game.GetPlayersStartingWithEnumerator(player);
			enumerator.MoveNext();
			while (enumerator.MoveNext())
			{
				var attackee = enumerator.Current;
				// Skip if the attack is blocked (Moat, Lighthouse, etc.)
				if (IsAttackBlocked[attackee])
					continue;

				if (attackee.Hand.Count >= 5)
				{
					bool predicate(Card c) => attackee._Game.ComputeCost(c).Coin.Value >= 2;
					if (attackee.Hand.LookThrough(predicate).Any())
					{
						var choice = new Choice("Choose a card to discard.", this, attackee.Hand[predicate], ChoiceOutcome.Discard, attackee);
						var result = attackee.MakeChoice(choice);
						attackee.Discard(DeckLocation.Hand, result.Cards);
					}
					else
					{
						attackee.ReturnHand(attackee.RevealHand());
					}
				}
			}
		}
	}
}