using System;
using System.Collections;
using System.Collections.Generic;
using BITKit;
using BITKit.Tween;
using BITKit.UX;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.UIElements;

namespace Net.BITKit.UX.SnackBar
{
    public class UXSnackBar<TPanel> : UIToolkitSubPanel<TPanel>,ISnackBar where TPanel :IUXPanel
    {
        [UXBindPath("snack_bar-container")] private VisualElement _snackBarContainer;

        private VisualTreeAsset _template;
        
        private readonly ValidHandle _waitHandle = new ValidHandle();

        public UXSnackBar(IServiceProvider serviceProvider) : base(serviceProvider)
        {
        }

        protected override void OnInitiated()
        {
            base.OnInitiated();
            _template = _snackBarContainer.Q<TemplateContainer>().templateSource;
            
            _snackBarContainer.Clear();
            
            BITAppForUnity.AllowCursor.AddListener(OnAllowCursor);
        }

        private void OnAllowCursor(bool obj)
        {
            if (obj)
            {
                _waitHandle.AddElement(this);
            }
            else
            {
                _waitHandle.RemoveElement(this);
            }
        }

        public async void Add(string message, Severity severity = Severity.Normal)
        {
            var ve = _snackBarContainer.Create(_template);
            
            ve.AddToClassList($"severity-{severity.ToString().ToLower()}");

            ve.Get<Label>().text = message;

            if (ve.Q("VisualElement--1") is { } bar)
            {
                await BITween.Lerp(x => bar.style.width = new StyleLength(Length.Percent(x)), 0f, 100, 5, Mathf.Lerp);
            }
            else
            {
                await UniTask.Delay(5000);
            }

            await _waitHandle;
            
            ve.RemoveFromHierarchy();
        }
    }

}