using Spine.Unity;
using UnityEngine;

public class DamagedEffectHandler : MonoBehaviour, IOwnedComponent<Character>
{
    static readonly float _redEffectDuration = 0.8f;

    public Character Owner { get; private set; }

    float redEffectRemainTime;

    public void Initialize(Character owner)
    {
        Owner = owner;
        Owner.OnDamaged += OnDamaged;
    }

    private void OnDamaged(Character _, Damage damage)
    {
        redEffectRemainTime = _redEffectDuration;
    }

    private void Update()
    {
        float prevTime = redEffectRemainTime;
        redEffectRemainTime = Mathf.Max(redEffectRemainTime - Time.fixedDeltaTime, 0f);

        if (prevTime > redEffectRemainTime)
            Owner.SkeletonAnimation.Skeleton.SetColor(Color.Lerp(Color.white, Color.red, redEffectRemainTime / _redEffectDuration));
    }

    private void OnDestroy()
    {
        if (Owner == null) return;
        Owner.OnDamaged -= OnDamaged;
    }
}