using System;
using DG.Tweening;
using UnityEngine;
using UnityEngine.UI;

namespace Panels
{
    [RequireComponent(typeof(Canvas))]
    [RequireComponent(typeof(GraphicRaycaster))]
    [RequireComponent(typeof(CanvasGroup))]
    public abstract class PanelBase : MonoBehaviour
    {
        // Application.parameters.editor.panelsFadeSpeed
        [SerializeField] private float fadeSpeed = 1f;
        
        private Canvas _canvas;
        private CanvasGroup _canvasGroup;
        
        protected Canvas Canvas
        {
            get
            {
                if (_canvas == null) _canvas = GetComponent<Canvas>();
                return _canvas;
            }
        }
        
        protected CanvasGroup CanvasGroup
        {
            get
            {
                if (_canvasGroup == null) _canvasGroup = GetComponent<CanvasGroup>();
                return _canvasGroup;
            }
        }
        
        public bool IsOpen { get; protected set; }
        
        public virtual void OpenPanel(Action callBack = null)
        {
            IsOpen = true;
            Canvas.enabled = true;

            CanvasGroup.alpha = 0f;
            CanvasGroup.DOFade(1f, fadeSpeed)
                .OnComplete(() => callBack?.Invoke());
        }
        
        public virtual void OpenPanelImmediately()
        {
            IsOpen = true;
            Canvas.enabled = true;
            CanvasGroup.alpha = 1f;
        }
        
        public virtual void ClosePanelImmediately()
        {
            // if (permanent) return;
            IsOpen = false;
            CanvasGroup.alpha = 0;
            Canvas.enabled = false;
        }
    }
}