using System.Collections;
using System.Collections.Generic;

using DG.Tweening;
using UnityEngine;
using UnityEngine.Events;

[RequireComponent(typeof(CanvasGroup))]
public class UICanvas : MonoBehaviour
{
    CanvasGroup canvasGroup;
    public UnityEvent OnHide;
    [SerializeField] float duration;

    void Start()
    {
        canvasGroup = GetComponent<CanvasGroup>();
    }

    public void Show()
    {
        canvasGroup.DOFade(1, duration);
    }

    public void Hide()
    {
        canvasGroup.DOFade(0, duration)
            .OnComplete(() =>
            {
                OnHide?.Invoke();
                gameObject.SetActive(false);
            });
    }

    void OnEnable()
    {
        if(canvasGroup == null)
            canvasGroup = GetComponent<CanvasGroup>();

        canvasGroup.alpha = 0;
        Show();
    }
}