using System.Collections;
using UnityEngine;
using UnityEngine.Events;
using OHM.UnityToolkit;
using OHM.UnityToolkit.Pooling;

namespace OHM.UnityToolkit.UI
{
	public class UIMoveToTarget : MonoBehaviour, PooledObjectListener
	{
		[SerializeField]
		private RectTransform rectTransform;

		[SerializeField]
		public RectTransform target;

		[SerializeField]
		public float initialDelay;

		[SerializeField]
		public float animDuration;

		[SerializeField]
		public AnimationCurve xCurve;

		[SerializeField]
		public AnimationCurve yCurve;

		[SerializeField]
		public bool autoStart = true;
		[SerializeField]
		public bool destroyOnEnd;

		public UnityEvent onMoveDone = new UnityEvent();
		private void Start()
		{
			ComponentsUtils.GetRequiredComponent(this, ref rectTransform);
			if (autoStart)
			{
				StartCoroutine(MoveAnim());
			}
		}

		public void StartMove()
		{
			StartCoroutine(MoveAnim());
		}

		private IEnumerator MoveAnim()
		{
			yield return new WaitForEndOfFrame();
			yield return new WaitForSeconds(initialDelay);
			Vector2 from = rectTransform.anchoredPosition;
			var delta = (Vector2)target.localPosition - from;
			for (float t = animDuration; t > 0f; t -= Time.deltaTime)
			{
				float ratio = 1f - t / animDuration;
				rectTransform.anchoredPosition = new Vector2(
					from.x + xCurve.Evaluate(ratio) * delta.x,
					from.y + yCurve.Evaluate(ratio) * delta.y);
				yield return new WaitForEndOfFrame();
			}
			onMoveDone.Invoke();
			if (destroyOnEnd)
			{
				PoolsManager.ReleaseObject(base.gameObject);
			}
		}

		public void OnEnable()
		{
			StartCoroutine(MoveAnim());
		}

		public void OnRelease()
		{
		}

		public void OnReset()
		{
		}

	}
}