using System;
using System.Threading;
using Code.UI.Panels;
using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.AddressableAssets;
using Object = UnityEngine.Object;

namespace Code.UI
{
    public class UIService : IUIService
    {
        private Canvas _canvas;
        private IUIFactory _factory;
        
        public UIElement CurrentPanel { get; private set; }
        
        public LoadingScreen LoadingScreen { get; private set; }
        
        public UIService(IUIFactory factory)
        {
            _factory = factory;
        }

        public async void Initialize(LoadingScreen loadingScreen)
        {
            LoadingScreen = loadingScreen;
            LoadingScreen.Show();
            
            _canvas = await _factory.CreateCanvas();
        }
        
        public async void SwitchPanelTo(UIPanel uiPanel, Action callback = null)
        {
            if (!_canvas) await UniTask.WaitUntil(() => _canvas );
            
            if(CurrentPanel) Addressables.ReleaseInstance(CurrentPanel.gameObject);//Object.Destroy(CurrentPanel.gameObject);
            
            CurrentPanel = await _factory.CreatePanel(_canvas, uiPanel);
            
            callback?.Invoke();
        }
    }
}