using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class VampireFangsMCard : MonsterCard
{
    public VampireFangsMCard(BattleParticipant owner)
        : base(owner, MCardId.VampireFangs, "VampireFangs", 2, CardType.Attack,
            "Steals 2 HP from target.") {
    }

    public override IEnumerator Use(IBattleEffectApplier effectApplier, MonsterViewpoint monsterViewpoint) {
        BattleParticipant target = DetermineTarget(monsterViewpoint);
        DealDamageEffect damageEffect = new DealDamageEffect(target, 2);
        effectApplier.Apply(damageEffect);
        if (damageEffect.AmountDealt > 0) {
            HealEffect healEffect = new HealEffect(this.owner, damageEffect.AmountDealt);
            effectApplier.Apply(healEffect);
        }
        yield break;
    }

    private BattleParticipant DetermineTarget(MonsterViewpoint monsterViewpoint) {
        return GetHeroWithHighestHP(monsterViewpoint);
    }
    
    private BattleHero GetHeroWithHighestHP(MonsterViewpoint monsterViewpoint) {
        int highestHPHeroIndex = -1;
        int highestHP = -1;
        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
            int heroHP = monsterViewpoint.Heroes[i].GetHP();
            if (heroHP > highestHP) {
                highestHPHeroIndex = i;
                highestHP = heroHP;
            }
        }
        return monsterViewpoint.Heroes[highestHPHeroIndex];
    }
}