using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Cysharp.Threading.Tasks;
using A2W;

public class LoadingPanel : UIPanel, ITransition
{
    [SerializeField] CanvasGroup canvasGroup;

    bool isDirty;

    public override void Init()
    {
        isDirty = false;

        canvasGroup.alpha = 0;
    }

    public override async UniTask Show()
    {
        isDirty = true;

        //Tween tween = canvasGroup.DOFade(1, 0.2f);

        //while (tween != null && tween.active && !tween.IsComplete())
        //{
        //    await UniTask.Yield();
        //}

        canvasGroup.alpha = 1;

        isDirty = false;

        canvasGroup.blocksRaycasts = false;
    }

    public override async UniTask Hide()
    {
        isDirty = true;

        //Tween tween = canvasGroup.DOFade(0, 0.2f);

        //while (tween != null && tween.active && !tween.IsComplete())
        //{
        //    await UniTask.Yield();
        //}

        canvasGroup.alpha = 0;

        isDirty = false;

        canvasGroup.blocksRaycasts = false;
    }

    public void Init(Transform parent)
    {

    }

    public void Begin()
    {
        UIManager.instance.ShowPanel<LoadingPanel>();
    }

    public void Finish()
    {
        UIManager.instance.HidePanel<LoadingPanel>();
    }

    public bool IsDone()
    {
        return !isDirty;
    }
}