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

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

        #region StackAPI

        public bool CheckIsWindowInStack(UIWindow window)
        {
            if (_uiWindowStack.Contains(window))
            {
                return true;
            }

            return false;
        }

        public UIWindow GetLast()
        {
            if (_uiWindowStack.Count > 0)
            {
                return _uiWindowStack.Last();
            }

            return null;
        }

        public UIWindow GetLastFullScreen()
        {
            if (_uiWindowStack.Count > 0)
            {
                for (int i = _uiWindowStack.Count - 1; i >= 0; i--)
                {
                    if (CheckWindowIsFullScreen(_uiWindowStack[i]))
                    {
                        return _uiWindowStack[i];
                    }
                }
            }

            return null;
        }
        
        public void PushWindow(UIWindow window)
        {
            if (window != null)
            {
                if (_uiWindowStack.Contains(window))
                {
                    DebugUtil.LogError($"{window.WindowName} exists in UIWindowStack!!!");
                    return;
                }
                _uiWindowStack.Add(window);
            }
        }

        public UIWindow PopWindow()
        {
            if (_uiWindowStack.Count > 0)
            {
                var window = _uiWindowStack.Last();
                _uiWindowStack.Remove(window);
                return window;
            }
            return null;
        }

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

        public void ForceRemoveWindow(UIWindow window)
        {
            if (_uiWindowStack.Contains(window))
            {
                _uiWindowStack.Remove(window);
            }
        }

        public void ClearHideStack(params string[] windowName)
        {
            for(int i = _uiWindowStack.Count - 1; i >=0 ; i--)
            {
                if (!windowName.Contains(_uiWindowStack[i].WindowName))
                {
                    _uiWindowStack[i].CloseWindow(UIWindowCloseType.ForceDestroy);
                    _uiWindowStack.RemoveAt(i);
                }
            }
        }
        
        public void ClearHideStack()
        {
            for(int i = 0; i < _uiWindowStack.Count; i++)
            {
                _uiWindowStack[i].CloseWindow(UIWindowCloseType.ForceDestroy);
            }
            _uiWindowStack.Clear();
        }
        #endregion
    }