using UnityEngine;
using UnityEngine.UI;

namespace AlicizaX.AnimationFlow.Runtime
{
    [Category("Animation")]
    public class GraphicAlphaTo : AnimationBaseNode<float>
    {
        [SerializeField]
        private Graphic _target;

        public override void OnInit()
        {
            orgValue = _target.color.a;
        }

        public override void OnReset()
        {
            _target.color = new Color(_target.color.r, _target.color.g, _target.color.b, orgValue);
        }

        public override void OnEnter()
        {
            if (setFrom)
            {
                _target.color = new Color(_target.color.r, _target.color.g, _target.color.b, from);
            }

            enterValue = _target.color.a;
        }

        public override void OnUpdate(float dt)
        {
            float a = Easing.Ease(easyType, enterValue, to, elapsedTime / duration);
            _target.color = new Color(_target.color.r, _target.color.g, _target.color.b, a);
        }

        public override bool Valid()
        {
            return _target != null && duration > 0;
        }

        public override float Duration()
        {
            return duration;
        }

        public override bool HasSubTitle()
        {
            return true;
        }

        public override string SubTitle()
        {
            return _target != null ? _target.name : null;
        }
    }
}