/// #pkgName FGUI包名
/// #panelName UIPanel名字
/// #UIName = $"{#pkgName}{#panelName}" UIKey名字
/// 该脚本由模板创建
/// created by cb 2024

using FairyGUI;
using System.Collections.Generic;
using XGame;
using XGame.Framework;
using XGame.Framework.UI;

namespace FL.FGUI
{
    /// <summary>
    /// UI逻辑处理类
    /// </summary>
    /// <typeparam name=""></typeparam>
    public partial class MainHomeBottomPanelCtrl : UIController<MainHomeBottomPanelVM>
    {
        private UIKey _tempKey;
        /// <summary>
        /// 已开启的Normal层UI队列
        /// </summary>
        private List<UIKey> _normalUIs = new();
        protected override void OnEnable(object intent)
        {
            AddUIListenres();
            VM.BtnCtrl.onChanged.Add(OnBtnCtrlChanged);
            FrameworkEvent.Instance.AddListener(XGame.Framework.EventDefine.UI_OPENED, OnUIOpened);
            FrameworkEvent.Instance.AddListener(XGame.Framework.EventDefine.UI_CLOSED, OnUIClosed);
            Mock();
        }
        protected override void OnDisable()
        {
            RemoveUIListenres();
            VM.BtnCtrl.onChanged.Remove(OnBtnCtrlChanged);
            FrameworkEvent.Instance.RemoveListener(XGame.Framework.EventDefine.UI_OPENED, OnUIOpened);
            FrameworkEvent.Instance.RemoveListener(XGame.Framework.EventDefine.UI_CLOSED, OnUIClosed);
            _tempKey = null;
            _normalUIs.Clear();
        }
        #region UI事件
        private void AddUIListenres()
        {
            VM.ClosePanelBtn.onClick.Add(OnClickClosePanelBtn);
        }
        private void RemoveUIListenres()
        {
            VM.ClosePanelBtn.onClick.Remove(OnClickClosePanelBtn);
        }
        private void OnClickClosePanelBtn(EventContext context)
        {
            if (_normalUIs.Count > 0)
            {
                var uikey = _normalUIs[0];
                _normalUIs.RemoveAt(0);
                Context.UI.Close(uikey);
                return;
            }
            VM.BtnCtrl.selectedIndex = 0;
        }

        #endregion
        private void Mock()
        { //TODO 临时代码
            VM.SetUnlockState(4, false, "主线4\r解锁");
            VM.SetUnlockState(5, false, "主线5\r解锁");
        }

        #region UI开启/关闭监听事件
        private bool IsUnlock(int index)
        { //TODO 临时代码
            return index switch
            {
                4 => false,
                5 => false,
                _ => true
            };
        }
        private UIKey IndexToKey(int index)
        {
            return index switch
            {
                1 => UIKeys.PlayerMainPanel,
                2 => UIKeys.PartnerSbMainPanel,
                3 => UIKeys.PartnerEpiMainPanel,
                6 => UIKeys.DragonEggTreasurePanel,
                _ => null,
            };
        }
        private int KeyToIndex(UIKey uiKey)
        {
            if (uiKey == UIKeys.PlayerMainPanel) return 1;
            if (uiKey == UIKeys.PartnerSbMainPanel) return 2;
            if (uiKey == UIKeys.PartnerEpiMainPanel) return 3;
            if (uiKey == UIKeys.DragonEggTreasurePanel) return 6;
            return -1;
        }
        private void OnBtnCtrlChanged(EventContext context)
        {
            Log.Debug($"OnBtnCtrlChanged. previousIndex:{VM.BtnCtrl.previousIndex} selectedIndex:{VM.BtnCtrl.selectedIndex}");
            if (VM.BtnCtrl.selectedIndex == 7)
            { // 7为单独显示返回按钮
                return;
            }
            CloseAllNormalUI();
            var lastUIKey = IndexToKey(VM.BtnCtrl.previousIndex);
            if (lastUIKey != null)
            {
                _tempKey = lastUIKey;
                Context.UI.Close(lastUIKey);
            }
            _tempKey = null;
            if (!IsUnlock(VM.BtnCtrl.selectedIndex))
            {
                Context.ShowTips("功能未解锁!");
                VM.BtnCtrl.selectedIndex = 0;
                return;
            }
            var nextUIKey = IndexToKey(VM.BtnCtrl.selectedIndex);
            if (nextUIKey != null)
            {
                _tempKey = nextUIKey;
                var async = Context.UI.OpenAsync(nextUIKey);
                async.On(_ =>
                {
                    _tempKey = null;
                });
            }
        }
        private void OnUIOpened(int eventId, object args)
        {
            var uikey = args as UIKey;
            Log.Debug($"收到UI开启事件 UIKey:{uikey} selectedIndex:{VM.BtnCtrl.selectedIndex}");
            if (uikey == _tempKey) return; // 避免重复监听
            var index = KeyToIndex(uikey);
            if (index != -1)
            { // 是控制器关联的UI
                if (index != VM.BtnCtrl.selectedIndex)
                { // 控制器索引不一致
                    VM.BtnCtrl.selectedIndex = index;
                }
                return;
            }
            if (_normalUIs.Contains(uikey))
            {
                Log.Error($"重复记录UI开启事件. UIKey:{uikey}");
                return;
            }
            var layer = UIKeys.GetLayer(uikey);
            if (layer != UILayer.Normal)
                return;
            if (VM.BtnCtrl.selectedIndex == 0)
            {// 7为单独显示返回按钮
                VM.BtnCtrl.selectedIndex = 7;
            }
            _normalUIs.Insert(0, uikey);
        }
        private void OnUIClosed(int eventId, object args)
        {
            var uikey = args as UIKey;
            Log.Debug($"收到UI关闭事件 UIKey:{uikey} selectedIndex:{VM.BtnCtrl.selectedIndex}");
            if (uikey == _tempKey) return; // 避免重复监听
            if (UIKeys.GetLayer(uikey) == UILayer.Normal)
            {
                _normalUIs.Remove(uikey);
            }
            var index = KeyToIndex(uikey);
            if (index != -1)
            { // 是控制器关联的UI
                if (index == VM.BtnCtrl.selectedIndex)
                { // 控制器索引是当前关闭的UI
                    VM.BtnCtrl.selectedIndex = 0;
                }
            }
        }
        /// <summary>
        /// 关闭所有的Normal层UI
        /// </summary>
        private void CloseAllNormalUI()
        {
            if (_normalUIs.Count == 0)
                return;
            for(var i = _normalUIs.Count - 1; i >= 0; i--)
            {
                var uikey = _normalUIs[i];
                _normalUIs.RemoveAt(i);
                _tempKey = uikey;
                Context.UI.Close(uikey);
            }
            _tempKey = null;
        }
        #endregion
    }
}