using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Events;
namespace BrewMonster.Scripts.Task.UI
{
    public class TaskTreeViewHolder : MonoBehaviour,IRefreshLayout
    {
        [SerializeField] private TaskTreeViewItem m_pTreeItemPrefab_Deep1;
        [SerializeField] private TaskTreeViewItem m_pTreeItemPrefab_Deep2;
        [SerializeField] private TaskTreeViewItem m_pTreeItemPrefab_Deep3;
        private TaskTreeViewItem _pTreeItemPrefab_Root;
        [Header("DEBUG")]
        [SerializeField] private uint m_uItemData;
        [SerializeField] private int _treeLevel =999;
        public bool isLastItem = true;
        public Color _itemTextColor;
        public string _itemText;
        public bool _expand;
        private RectTransform _rectTransform;
        private void Awake()
        {
            _rectTransform = GetComponent<RectTransform>();
        }
        public void ResolvePrefab()
        {
            // Guard: prevent multiple calls to avoid duplicate prefab instances
            // 防护：防止多次调用以避免重复的预制体实例
            if (_pTreeItemPrefab_Root != null)
            {
                return;
            }
            if(isLastItem)
            {
               _pTreeItemPrefab_Root = Instantiate(m_pTreeItemPrefab_Deep3,transform);
            }
            else if(_treeLevel == 0)
            {
                _pTreeItemPrefab_Root = Instantiate(m_pTreeItemPrefab_Deep1,transform);
            }
            else 
            {
                _pTreeItemPrefab_Root = Instantiate(m_pTreeItemPrefab_Deep2,transform);
            }
            _pTreeItemPrefab_Root.OnClick.AddListener(OnBtnClick);
            _pTreeItemPrefab_Root.OnExpand.AddListener(OnExpand);
            _pTreeItemPrefab_Root.transform.SetAsFirstSibling();
            
            // Apply stored text and color to the prefab after creation
            // 创建后应用存储的文本和颜色到预制体
            if (!string.IsNullOrEmpty(_itemText))
            {
                _pTreeItemPrefab_Root.SetItemText(_itemText);
            }
            if (_itemTextColor != default(Color))
            {
                _pTreeItemPrefab_Root.SetItemTextColor(_itemTextColor);
            }
            _pTreeItemPrefab_Root.RefreshSelf();

        }
        public void SetItemData(uint uItemData)
        {
            m_uItemData = uItemData;
            gameObject.name = $"Task_{uItemData}";
        }
        
        public uint GetItemData()
        {
            return m_uItemData;
        }
        
        public void SetItemTextColor(Color color)
        {
            _itemTextColor = color;
            // Apply to prefab if it exists
            // 如果预制体存在，则应用颜色
            if (_pTreeItemPrefab_Root != null)
            {
                _pTreeItemPrefab_Root.SetItemTextColor(color);
            }
        }
        public void SetLastItem(bool isLastItem)
        {
            this.isLastItem = isLastItem;
        }
        public void SetItemText(string text)
        {
            _itemText = text;
            // Apply to prefab if it exists
            // 如果预制体存在，则应用文本
            if (_pTreeItemPrefab_Root != null)
            {
                _pTreeItemPrefab_Root.SetItemText(text);
            }
        }
        
        public void SetTreeLevel(int level)
        {
            _treeLevel = level;
        }
        
        public int GetTreeLevel() => _treeLevel;

        public void OnExpand(bool expand)
        {
            var children = GetComponentsInChildren<TaskTreeViewHolder>(true);

            for (int i=1; i<children.Length; i++)
            {
                if(children[i].GetTreeLevel() == _treeLevel + 1)
                {
                    children[i].gameObject.SetActive(expand);
                }
            }
        }
        public void RefreshLayout()
        {
            var rectTransform = _rectTransform;
            if (rectTransform == null)
            {
                return;
            }
            Debug.Log($"[TaskTreeViewHolder] RefreshLayout");
            foreach(var child in GetComponentsInChildren<TaskTreeViewHolder>(true))
            {
                child.RefreshSelf();
            }

            if (transform.parent &&
                transform.parent.TryGetComponent<IRefreshLayout>(out var refreshLayout))
            {
                refreshLayout.RefreshLayout();
            }
        }
        public void RefreshSelf()
        {
            var rectTransform = _rectTransform;
            if (rectTransform == null)
            {
                return;
            }
            rectTransform.ForceUpdateRectTransforms();
            LayoutRebuilder.ForceRebuildLayoutImmediate(rectTransform);
            _pTreeItemPrefab_Root.RefreshSelf();
        }
        void OnBtnClick()
        {
            EventBus.Publish(new TaskItemClickEvent() { Data = m_uItemData });
            Debug.Log($"[TaskTreeViewItem] OnBtnClick: {m_uItemData}");
        }
    }
    
}