using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Cysharp.Threading.Tasks;
using Framework;
using Obfuz;
using PhxhSDK;
using PhxhSDK.AOT.Aspect;
using UnityEngine;

[ObfuzIgnore]
public partial class UIManager : Singlenton<UIManager>, IInitable, IUpdatable
{
    public const string UI_PREFAB_PATH = "Assets/Art_Out/UI/Prefab/{0}.prefab";

    public Dictionary<string, UIWindow> mMemoryWindows = new Dictionary<string, UIWindow>();

    // ✅ 使用独立的层级管理器
    private UICanvasLayerManager LayerManager => UICanvasLayerManager.Instance;
    
    private ScreenOrientation _currentOrientation;
    private Dictionary<string, string> _openingWindows = new Dictionary<string, string>();

    private List<UIWindow> _hideCache = new List<UIWindow>();
    private UIWindow _curFullScreen;

    private Dictionary<GameObject, UIWindow> _uiWindowObjDic = new Dictionary<GameObject, UIWindow>();
    public Dictionary<GameObject, UIWindow> UIWindowObjDic => _uiWindowObjDic;

    public Vector2 Size;
    /// <summary>
    /// UI和主相机屏幕缩放
    /// </summary>
    public Vector2 UIAndMainScreenScale;
    /// <summary>
    /// UI和UI屏幕缩放
    /// </summary>
    public Vector2 UIAndUIScreenScale;
    /// <summary>
    /// 禁用返回键计数
    /// </summary>
    private int disableBackCount;
    /// <summary>
    /// 是否响应返回键
    /// </summary>
    public bool IsEnableBack 
    {
        get { return disableBackCount <= 0; }
        set
        {
            if (value)
            {
                if (disableBackCount > 0)
                    --disableBackCount;
            }
            else
                ++disableBackCount;
        }
    }

    public void Init()
    {
        IsEnableBack = true;
        _AllWindowMeta();
        
        // 初始化层级管理器
        LayerManager.Initialize(UIRoot.Instance.GetAllLayerRoots());
        
        if (DeviceHelper.IsFullScreenIOS())
        {
            SetFullScreenIOS();
        }
        
        EventManager.Instance.Register(EventManager.EventName.Android_Click_Back, _OnAndroidClickBack);

        OnScreenSizeChange();

        AspectManager.Instance.ScreenSizeChange += OnScreenSizeChange;
    }

    public void Release()
    {
        LayerManager.Clear();
        AspectManager.Instance.ScreenSizeChange -= OnScreenSizeChange;
        EventManager.Instance.Unregister(EventManager.EventName.Android_Click_Back, _OnAndroidClickBack);
    }

    public bool disableUILogic = false;

    public void Update(float dt)
    {
        if (disableUILogic) return;
        foreach (var winKv in mMemoryWindows)
        {
            var window = winKv.Value;
            if (window != null
                && window.gameObject 
                && window.IsCreated() 
                && window.IsActive()  // 改为 IsActive()：只更新活跃窗口（显示且未暂停）
                && !window.IsClosing)
            {
                window.Update(dt);
            }
        }

        _UpdateInputBlockTimer(dt);
    }

    #region UIWindow Manager

    public static void BindWindowObj(UIWindow window, GameObject uiObj)
    {
        if (window == null || uiObj == null)
        {
            if (window == null)
                DebugUtil.LogError("window is null");
            if (uiObj == null)
                DebugUtil.LogError("uiObj is null");
            return;
        }
        window.gameObject = uiObj.gameObject;
        window.transform = uiObj.transform;
        window.name = uiObj.name;
    }

    #endregion

    #region OpenWindowAPI
    /// <summary>
    /// 打开一个UI
    /// UIManager.Instance.OpenWindow("Common/GameUI")
    /// </summary>

    /// <summary>
    /// 创建并打开窗口
    /// </summary>
    /// <param name="path">窗口路径</param>
    /// <param name="data">传递的数据</param>
    public async UniTask<UIWindow> CreateAndOpenWindow(string path, object data = null)
    {
        DebugUtil.LogP($"打开窗口:{path}");
        if (mMemoryWindows.ContainsKey(path))
        {
            DebugUtil.LogG($"窗口已打开！！！{path}");
            //return null;
        }
        
        var window = await _LoadWindow(path, false);
        if (window != null)
        {
            window.ShowWindow(data);
        }
        
        return window;
    }
    
    public bool Back()
    {
        return false;
    }

    public bool RemoveWindow(string wName)
    {
        string windowName = wName;
        bool result = false;
        UIWindow window;
        if (mMemoryWindows.TryGetValue(windowName, out window))
        {
            LayerManager.RemoveWindow(window);
            mMemoryWindows.Remove(windowName);
            result = true;
        }
        return result;
    }
    
    /// <summary>
    /// 关闭窗口
    /// </summary>
    /// <param name="wName">窗口名称</param>
    /// <param name="destroy">是否销毁窗口</param>
    public void CloseWindow(string wName, bool destroy)
    {
        var window = GetLoadedWindowByPath<UIWindow>(wName);
        if (window != null)
        {
            window.CloseWindow(destroy);
        }
    }
    

    
    /// <summary>
    /// 打开已加载的窗口（通过路径）
    /// </summary>
    public void OpenLoadedWindow(string path, object data = null)
    {
        var window = GetLoadedWindowByPath(path);
        if (window != null)
        {
            window.ShowWindow(data);
        }
        else
        {
            DebugUtil.LogError($"OpenLoadedWindow: window not found: {path}");
        }
    }

    public T GetLoadedWindowByPath<T>(string uipath) where T : UIWindow
    {
        var window = GetLoadedWindowByPath(uipath) as T;
        //return window.gameObject.activeSelf ? window : null;
        return window;
    }

    public UIWindow GetLoadedWindowByPath(string uipath)
    {
        if (string.IsNullOrEmpty(uipath))
        {
            DebugUtil.LogError("UIManager.GetOpenedWindowByPath, uipath is null or empty");
            return null;
        }
        if (mMemoryWindows.ContainsKey(uipath))
        {
            //return window.gameObject.activeSelf ? window : null;
            return mMemoryWindows[uipath];
        }
        
        return null;
    }

    public bool GetTopWindow(out UIWindow window, out UICanvasLayer layer, int banLayerMask)
    {
        return LayerManager.GetTopWindow(out window, out layer, banLayerMask);
    }

    public int LayerMask(UICanvasLayer layer)
    {
        return LayerManager.GetLayerMask(layer);
    }

    async void SetFullScreenIOS()
    {
        await UniTask.Delay(670);
        // while (true)
        // {
        //     var screenOrientation = DragonNativeBridge.GetScreenOrientation();
        //     if (screenOrientation != _currentOrientation)
        //     {
        //         _currentOrientation = screenOrientation;
        //         EventDispatcher.Instance.DispatchEvent(new ScreenOrientationChangedEvent(_currentOrientation));
        //     }
        //     yield return wait;
        // }
    }

    /// <summary>
    /// 加载窗口（不显示）
    /// 用于预加载场景
    /// </summary>
    public async UniTask<UIWindow> LoadWindow(string path)
    {
        return await _LoadWindow(path, true);
    }
    private async UniTask<UIWindow> _LoadWindow(string path, bool forceHide)
    {

         string uipath = path;
        UIWindow window = null;

        WindowInfo wInfo;
        if (!_windowsInfo.ContainsKey(uipath))
        {
            //if (_windowsInfo.TryGetValue(uipath, out wInfo))
            {
                DebugUtil.LogError("Create ui fail: {0}, no windows info inited", uipath);
                return window;
            }
        }
        wInfo = _windowsInfo[uipath];
        var uiWindowLayer = wInfo.windowLayer;

        if (!mMemoryWindows.TryGetValue(uipath, out window))
        {
            if (_openingWindows.ContainsKey(uipath))
            {
                return window;
            }
            _openingWindows.Add(uipath, uipath);
            window = await UIRoot.Instance.CreateWindow(uipath, uiWindowLayer);
            _openingWindows.Remove(uipath);
            if (window != null)
            {
                mMemoryWindows[uipath] = window;
                window.WindowName = uipath;
                window.uiWindowLayer = uiWindowLayer;
                window.Init();
            }
            else
            {
                DebugUtil.LogError("Create ui fail: {0}", uipath);
                return window;
            }
        }

        LayerManager.AddWindow(window);

        if (window == null)
        {
            DebugUtil.LogError("Create ui fail: {0}", uipath);
            return null;
        }
        
        if (forceHide)
        {
            window.gameObject.SetActive(false);
        }

        _uiWindowObjDic.TryAdd(window.gameObject, window);
        return window;
    }


    public void ForeachUI(Action<UIWindow> action)
    {
        var windowList = mMemoryWindows.ToList();
        foreach (var kv in windowList)
        {
            var window = kv.Value;
            if (window != null)
            {
                action?.Invoke(kv.Value); 
            }
        }
    }

    public void CloseAllUIExcept(string path)
    {
        var windowList = mMemoryWindows.ToList();
        foreach (var kv in windowList)
        {
            var window = kv.Value;
            if(window.WindowName != path)
            {
                window.CloseWindow(destroy: true);
                mMemoryWindows.Remove(window.WindowName);
                LayerManager.RemoveWindow(window);
            }
        }    
    }

    #endregion

    #region ShowAndHide


    /// <summary>
    /// 隐藏指定层级及以下的所有UI
    /// 和 ShowAllUI 成对调用
    /// </summary>
    /// <param name="maxLayer">最大层级（包含该层级及以下的所有UI都会被隐藏）</param>
    /// <param name="exceptions">不隐藏的UI窗口名称列表</param>
    public void HideAllUI(UICanvasLayer maxLayer, params string[] exceptions)
    {
        var hiddenWindows = LayerManager.HideWindowsUpToLayer(maxLayer, exceptions);
        _hideCache.AddRange(hiddenWindows);
    }
    
    /// <summary>
    /// 和HideAllUI成对调用
    /// </summary>
    public void ShowAllUI()
    {
        foreach (var v in _hideCache)
        {
            var window = v;
            if (window != null)
                window.ShowWindow();
        }
        _hideCache.Clear();
    }
    
    #endregion

    //根据路径判断UI界面是否打开
    public bool IsWindowOpening(string uiPath)
    {
        string windowName;
        if (_openingWindows.TryGetValue(uiPath, out windowName))
        {
            if (windowName != null)
            {
                return true;
            }
        }

        return false;
    }

    /// <summary>
    /// 关闭指定层级的所有窗口（支持单个或多个层级）
    /// </summary>
    /// <param name="layers">要关闭的层级列表</param>
    public void CloseAllInLayer(params UICanvasLayer[] layers)
    {
        CloseAllInLayer(layers, null);
    }

    /// <summary>
    /// 关闭指定层级的所有窗口，可排除指定窗口（支持单个或多个层级）
    /// </summary>
    /// <param name="layers">要关闭的层级列表</param>
    /// <param name="exceptions">不关闭的窗口名称列表</param>
    public void CloseAllInLayer(UICanvasLayer[] layers, params string[] exceptions)
    {
        if (layers == null || layers.Length == 0)
        {
            DebugUtil.LogWarning("[CloseAllInLayer] No layers specified");
            return;
        }

        int totalClosed = 0;
        
        foreach (var layer in layers)
        {
            var windowsInLayer = LayerManager.GetWindowsInLayer(layer);
            
            if (windowsInLayer.Count == 0)
            {
                DebugUtil.Log($"[CloseAllInLayer] No windows in layer: {layer}");
                continue;
            }

            List<UIWindow> toBeRemoved = new List<UIWindow>();
            
            var node = windowsInLayer.First;
            while (node != null)
            {
                var window = node.Value;
                bool shouldClose = true;
                
                // 检查是否在例外列表中
                if (exceptions != null && exceptions.Length > 0)
                {
                    foreach (var exception in exceptions)
                    {
                        if (window.WindowName == exception)
                        {
                            shouldClose = false;
                            DebugUtil.Log($"[CloseAllInLayer] Skipping window: {window.WindowName} (in exception list)");
                            break;
                        }
                    }
                }
                
                if (shouldClose)
                {
                    toBeRemoved.Add(window);
                }

                if (node == windowsInLayer.Last)
                {
                    break;
                }
                
                node = node.Next;
            }

            // 关闭窗口
            foreach (var window in toBeRemoved)
            {
                DebugUtil.Log($"[CloseAllInLayer] Closing window: {window.WindowName} in layer {layer}");
                window.CloseWindow(destroy: true);
            }
            
            totalClosed += toBeRemoved.Count;
        }
        
        if (layers.Length == 1)
            DebugUtil.Log($"[CloseAllInLayer] Closed {totalClosed} windows in layer {layers[0]}");
        else
            DebugUtil.Log($"[CloseAllInLayer] Closed {totalClosed} windows in {layers.Length} layers");
    }

    private async void _OnAndroidClickBack()
    {
        if (!IsEnableBack)
            return;

        // 获取所有可见窗口（从上到下）
        var visibleWindows = LayerManager.GetAllVisibleWindows();
        
        DebugUtil.Log($"[AndroidBack] Found {visibleWindows.Count} visible windows");
        
        // 从上到下遍历，找到第一个处理返回键的窗口
        foreach (var window in visibleWindows)
        {
            DebugUtil.Log($"[AndroidBack] Trying window: {window.WindowName} (Layer: {window.uiWindowLayer})");
            
            if (await window.Back())
            {
                // 窗口处理了返回键，结束遍历
                DebugUtil.Log($"[AndroidBack] Handled by: {window.WindowName}");
                return;
            }
        }

        // 没有窗口处理返回键，显示退出确认
        DebugUtil.Log("[AndroidBack] No window handled, showing exit confirmation");
        if (!CheckWindowCreated(UINameConst.UIBackReturn))
        {
            await CreateAndOpenWindow(UINameConst.UIBackReturn);
        }
    }
    
    public bool CheckWindowCreated(string uiPath)
    {
        if (mMemoryWindows.TryGetValue(uiPath, out var window))
        {
            return window.IsCreated();
        }
        return false;
    }

    private async void OnScreenSizeChange()
    {
        await UniTask.NextFrame(); // 必须等待一帧，等RectTransform大小刷新后获取

        RectTransform rectTrans = UIRoot.Instance.Root.GetComponent<RectTransform>();

        Size = new(rectTrans.sizeDelta.x, rectTrans.sizeDelta.y);
        UIAndMainScreenScale = new Vector3(Size.x / Screen.width, Size.y / Screen.height);
        UIAndUIScreenScale = new Vector3(Size.x / AspectManager.Instance.ScreenSize.x, Size.y / AspectManager.Instance.ScreenSize.y);
    }
}