using DG.Tweening;
using UnityEngine;

[DisallowMultipleComponent]
public class UI_SettingsPanelEnterAnim : MonoBehaviour
{
    [SerializeField] private RectTransform moveTarget;
    [SerializeField] private CanvasGroup fadeTarget;
    [SerializeField] private bool playOnEnable = true;
    [SerializeField] private float enterDuration = 0.3f;
    [SerializeField] private float fromOffsetY = 32f;
    [SerializeField] private Ease enterEase = Ease.OutCubic;
    [SerializeField] private bool useUnscaledTime = true;

    private Sequence enterSequence;
    private bool basePosCached;
    private Vector2 basePos;

    private void Awake()
    {
        AutoWire();
        CacheBasePos();
    }

    private void OnEnable()
    {
        if (playOnEnable)
            Play();
    }

    private void OnDisable()
    {
        KillTween();
        ResetToBase();
    }

    public void Play()
    {
        AutoWire();
        CacheBasePos();

        if (moveTarget == null || fadeTarget == null)
            return;

        KillTween();

        moveTarget.anchoredPosition = basePos - new Vector2(0f, Mathf.Abs(fromOffsetY));
        fadeTarget.alpha = 0f;
        fadeTarget.interactable = false;
        fadeTarget.blocksRaycasts = false;

        enterSequence = DOTween.Sequence().SetUpdate(useUnscaledTime);
        enterSequence.Join(moveTarget.DOAnchorPos(basePos, Mathf.Max(0.01f, enterDuration)).SetEase(enterEase));
        enterSequence.Join(fadeTarget.DOFade(1f, Mathf.Max(0.01f, enterDuration)).SetEase(Ease.OutCubic));
        enterSequence.OnComplete(() =>
        {
            fadeTarget.interactable = true;
            fadeTarget.blocksRaycasts = true;
            enterSequence = null;
        });
    }

    private void AutoWire()
    {
        if (moveTarget == null)
        {
            moveTarget = transform as RectTransform;
            if (moveTarget == null)
                moveTarget = GetComponentInChildren<RectTransform>(true);
        }

        if (fadeTarget == null)
            fadeTarget = GetComponent<CanvasGroup>();
        if (fadeTarget == null)
            fadeTarget = gameObject.AddComponent<CanvasGroup>();
    }

    private void CacheBasePos()
    {
        if (moveTarget == null)
            return;

        if (!basePosCached)
        {
            basePos = moveTarget.anchoredPosition;
            basePosCached = true;
        }
    }

    private void ResetToBase()
    {
        if (moveTarget != null && basePosCached)
            moveTarget.anchoredPosition = basePos;

        if (fadeTarget != null)
        {
            fadeTarget.alpha = 1f;
            fadeTarget.interactable = true;
            fadeTarget.blocksRaycasts = true;
        }
    }

    private void KillTween()
    {
        if (enterSequence != null)
        {
            enterSequence.Kill();
            enterSequence = null;
        }

        if (moveTarget != null)
            moveTarget.DOKill();
        if (fadeTarget != null)
            fadeTarget.DOKill();
    }
}