using Cysharp.Threading.Tasks;
using OfficeOpenXml.FormulaParsing.Excel.Functions.RefAndLookup;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class UIManager : MonoBehaviour
{
    public static UIManager Instance { get; private set; }
    /// <summary> 已实例化UI列表 </summary>
    private Dictionary<string, GameObject> m_UIList;
    /// <summary> UI资源引用列表 </summary>
    private Dictionary<string, GameObject> m_UIPreList=new Dictionary<string, GameObject>();
    /// <summary> UI根节点 </summary>
    Canvas m_UIRoot;

    /// <summary> 已打开UI列表 </summary>
    private Dictionary<string, GameObject> m_ShowList;

    private void Awake()
    {
        Instance = this;

        m_UIRoot = GetComponentInChildren<Canvas>();
        //初始化已实例化UI列表
        if(m_UIList==null)
            m_UIList = new Dictionary<string, GameObject>();
        m_UIList = GetAllGeneratedUI();
    }

    private void Update()
    {
  
        if(m_ShowList == null)return;
        bool isMain = false;
        foreach (var item in m_ShowList)
        {
            //Debug.Log(item.Value);
            if(item.Value!=null)
            if (item.Value.name.Contains("Main")&& m_ShowList.Count==1)
            {
                isMain = true;
            }
        }
        SetCursor(!isMain);
        if(Input.GetKeyDown(KeyCode.Tab))
        {
            int index = PlayerPrefs.GetInt("CurLanguage");
            index= index==0 ? 1 : 0;
            LanguageMatchManager.Instance.RefreshLanguage(index);
        }
   
    }
    public void SetCursor(bool _cursorState)
    {
        //隐藏鼠标
        Cursor.visible = _cursorState;
        Cursor.lockState = _cursorState ? CursorLockMode.Confined : CursorLockMode.Locked;
    }
    /// <summary>
    /// 获得已经在根节点上生成的UI
    /// </summary>
    /// <returns></returns>
    private Dictionary<string,GameObject> GetAllGeneratedUI()
    {
        Dictionary<string,GameObject> tempDic = new Dictionary<string,GameObject>();
        for(int i = 0; i < m_UIRoot.transform.childCount; i++)
        {
            //Debug.Log(m_UIRoot.transform.GetChild(i).name);
            tempDic.Add(m_UIRoot.transform.GetChild(i).name, m_UIRoot.transform.GetChild(i).gameObject);
        }
        return tempDic;
    }
    /// <summary>
    /// 显示UI
    /// </summary>
    /// <param name="uiName"></param>
    public async UniTask ShowUI(WindowID windowID) 
    {
        string uiName = windowID.ToString();
        GameObject go;
    
  

        if (m_UIList.TryGetValue(uiName,out go))
        {
            go.SetActive(true);
            go.GetComponent<BasePanel>()?.OnShowWindow();
        }
        else
        {
           go = await CreateAndShowUI(uiName);
        }

        if (m_ShowList == null)
            m_ShowList = new Dictionary<string, GameObject>();
        if(!m_ShowList.ContainsKey(uiName))
            m_ShowList.Add(uiName, go);
    }

    /// <summary>
    /// 隐藏UI
    /// </summary>
    /// <param name="uiName"></param>
    public void HideUI(WindowID windowID)
    {
        string uiName = windowID.ToString();
        GameObject go;
        if(m_UIList.TryGetValue(uiName,out go))
        {
            go.GetComponent<BasePanel>()?.OnCloseWindow();
            go.SetActive(false);
        }
        m_ShowList.Remove(uiName);
    }

    /// <summary>
    /// 隐藏所有UI
    /// </summary>
    public void HideAllUI()
    {   
        foreach (var ui in m_UIList)
        {
            ui.Value.SetActive(false);
        }
    }
    
    /// <summary>
    /// 销毁UI
    /// </summary>
    /// <param name="uiName"></param>

    public void DestroyUI(WindowID windowID)
    {
        string uiName = windowID.ToString();
        GameObject go;
        if (m_UIList.TryGetValue(uiName, out go))
        {
            go.GetComponent<BasePanel>()?.OnDestroyWindow();
            Destroy(go);
            m_UIList.Remove(uiName);
        }
    }

    /// <summary>
    /// 销毁所有UI
    /// </summary>

    public void DestroyAllUI()
    {
        List<GameObject> ulist = new List<GameObject>(m_UIList.Values);
        for(int i = 0; i < ulist.Count; i++)
        {
            Destroy(ulist[i]);
        }
        m_UIList.Clear();
    }

    /// <summary>
    /// 加载并显示UI
    /// </summary>
    /// <param name="uiName"></param>
    private async UniTask<GameObject> CreateAndShowUI(string uiName)
    {
        //if (m_UIPreList.ContainsKey(uiName))
        //{
        //    GameObject ui = Instantiate(m_UIPreList[uiName]);
        //    ui.GetComponent<BasePanel>()?.OnInitWindow();
        //    ui.transform.SetParent(m_UIRoot.transform);
        //    RectTransform rect = ui.GetComponent<RectTransform>();
        //    rect.localPosition = Vector3.zero;
        //    rect.localRotation = Quaternion.identity;
        //    rect.localScale = Vector3.one;
        //    m_UIList.Add(uiName, ui);
        //}


        GameObject go = await YooAssetManager.Instance.LoadAsset<GameObject>(uiName);
        if (go != null)
        {
            GameObject ui = Instantiate(go);
            ui.GetComponent<BasePanel>()?.OnInitWindow();
            ui.transform.SetParent(m_UIRoot.transform);
            RectTransform rect = ui.GetComponent<RectTransform>();
            rect.localPosition = Vector3.zero;
            rect.offsetMax = Vector2.zero;
            rect.offsetMin = Vector2.zero;
            rect.localRotation = Quaternion.identity;
            rect.localScale = Vector3.one;
            m_UIList.Add(uiName, ui);
        }
        return go;
    }
}