using System;
    using System.Collections.Generic;
    using Cysharp.Threading.Tasks;

    public partial class UIManager
    {
        private Stack<UIWindow> _uiWindowStack = new Stack<UIWindow>(8);

        public void PushWindow(UIWindow window)
        {
            if (window)
            {
                _uiWindowStack.Push(window);
            }
        }

        public UIWindow PopWindow()
        {
            if (_uiWindowStack.Count > 0)
            {
                return _uiWindowStack.Pop();
            }
            return null;
        }

        public UIWindow PopWindow(string checkWindowName)
        {
            if (_uiWindowStack.Count > 0)
            {
                var window = _uiWindowStack.Peek();
                if (string.IsNullOrEmpty(checkWindowName) || checkWindowName.Equals(window.WindowName))
                {
                    return _uiWindowStack.Pop();
                }
            }
            return null;
        }

        public void ClearHideStack()
        {
            _uiWindowStack.Clear();
        }

        public static async UniTask<UIWindow> AnimSwitchWindow(UIWindow hideWindow,  UIWindowCloseType closeType, string showWindowName,  object data = null)
        {
            if (hideWindow != null)
            {
                await hideWindow.AnimHide();
            }
            
            var showWindow = await UIManager.Instance.OpenWindow(showWindowName, data);


            if (showWindow != null)
            {
                await showWindow.AnimShow();
            }
            

            if (hideWindow != null)
            {
                hideWindow.CloseWindow(closeType);
            }

            return showWindow;
        }
        
        public static async UniTask<UIWindow> AnimSwitchWindow(UIWindow hideWindow,  UIWindowCloseType closeType, UIWindow showWindow,  object data)
        {
            if (hideWindow != null)
            {
                await hideWindow.AnimHide();
            }

            if (showWindow != null)
            {
                showWindow.OpenWindow(data);
                await showWindow.AnimShow();
            }

            if (hideWindow != null)
            {
                hideWindow.CloseWindow(closeType);
            }

            return showWindow;
        }

        //常规的关闭一个最后打开的界面
        public static async UniTask NormalCloseWindow(UIWindow hideWindow, String showWindowStr, Object data = null)
        {
            var window = Instance.PopWindow();
            if (!window)
            {
                hideWindow.OnBack();
                return;
            }
            await AnimSwitchWindow(hideWindow, UIWindowCloseType.OnlyHide, showWindowStr, data);
        }
        
        public static async UniTask NormalCloseWindow(UIWindow hideWindow, Object data = null)
        {
            var showWindow = Instance.PopWindow();
            if (!showWindow)
            {
                hideWindow.OnBack();
                return;
            }
            await AnimSwitchWindow(hideWindow, UIWindowCloseType.OnlyHide, showWindow, data);
        }
    }