using System;
using System.Collections;
using System.Collections.Generic;
using BITKit.UX;
using UnityEngine;
using UnityEngine.UIElements;
// ReSharper disable MemberCanBePrivate.Global
public class UXBuilder : MonoBehaviour
{
   [SerializeReference, SubclassSelector]
   private IVisualElementProvider visualElementProvider;

   [SerializeField] private VisualTreeAsset visualTreeAsset;

   [SerializeField] private bool clearOnStart;

   private readonly List<VisualElement> instances = new();
   public VisualElement VisualElement => visualElementProvider.GetVisualElement();
   private IList ItemSource
   {
      get => _itemSource;
      set => OnBindItemSource(value);
   }
   private IList _itemSource;


   public T Build<T>() where T : VisualElement,new()
   {
      var clone =visualTreeAsset is not null ? visualTreeAsset.CloneTree()[0] : new T();
      visualElementProvider.GetVisualElement().Add(clone);
      instances.Add(clone);
      return clone as T;
   }
   public T Build<T>(Func<VisualElement> createFactory) where T : VisualElement
   {
      var clone = createFactory.Invoke();
      visualElementProvider.GetVisualElement().Add(clone);
      instances.Add(clone);
      return clone as T;
   }
   public UXContainer BuildAsContainer(Func<VisualElement> createFactory) => new(Build<VisualElement>(createFactory));
   public UXContainer BuildAsContainer() => new(Build<VisualElement>());

   public void Clear()
   {
      foreach (var x in instances)
      {
         visualElementProvider.GetVisualElement().Remove(x);
      }

      instances.Clear();
   }

   private void OnBindItemSource(IList source)
   {
      _itemSource = source;
   }

   public void Rebuild()
   {
      
   }

   private void Start()
   {
      if (clearOnStart)
      {
         visualElementProvider.GetVisualElement().Clear();
      }
   }
}