using System;
using UnityEngine;
using DG.Tweening;

public class ScrollOpenUI : MonoBehaviour
{
    public RectTransform leftPole;
    public RectTransform rightPole;
    public RectTransform mask;

    public float openWidth = 800f;
    public float maskWidth = 844f;
    public float duration = 0.8f;

    Tween tween;

    private void Start()
    {
        mask.sizeDelta = new Vector2(0, mask.sizeDelta.y);
    }

    // ================= 对外接口 =================
    public void Open(Action cb)
    {
        Play(1f,cb);
    }

    public void Close(Action cb)
    {
        Play(0f,cb);
    }

    // ============================================

    void Play(float target,Action cb)
    {
        tween?.Kill();

        float leftX  = target == 1f ? -openWidth * 0.5f : 0f;
        float rightX = target == 1f ?  openWidth * 0.5f : 0f;
        float maskX  = target == 1f ?  maskWidth : 0f;

        tween = DOTween.Sequence()
            .Join(leftPole.DOAnchorPosX(leftX, duration))
            .Join(rightPole.DOAnchorPosX(rightX, duration))
            .Join(mask.DOSizeDelta(
                new Vector2(maskX, mask.sizeDelta.y),
                duration
            ))
            .SetEase(Ease.OutCubic).OnComplete(() =>
            {
                cb?.Invoke();
            });
    }

    // ================= 初始化 =================

    void OnDisable()
    {
        tween?.Kill();
    }
}