// 本脚本只在不存在时会生成一次。已存在不会再次生成覆盖

using System.Collections.Generic;
using UnityEngine;
using NBC;
using Unity.VisualScripting;

namespace NBF
{
    public partial class SettingPanel : UIPanel
    {
        public override string UIPackName => "Main";
        public override string UIResName => "SettingPanel";

        private List<TabListData> tabList = new List<TabListData>();


        private string _currentGroup = "";

        protected override void OnInit()
        {
            base.OnInit();
            IsShowCursor = true;
            IsDontBack = true;

            var groupNames = Settings.Instance.GetAllGroups();
            foreach (var group in groupNames)
            {
                var tab = new TabListData
                {
                    Name = group
                };
                tabList.Add(tab);
            }

            Menu.OnTabChange += ChangeTab;
            List.onClickItem.Set(OnClickListItem);
        }

        protected override void OnShow()
        {
            Settings.Instance.LoadAllSettings();
            InputManager.OnUICanceled += OnUICanceled;
            Menu.SetTabs(tabList);
            UseBottomMenu();
        }

        private void ChangeTab(int index)
        {
            if (index < 0) return;
            Log.Info($"Change tab index={index}");
            var tabListData = tabList[index];
            _currentGroup = tabListData.Name;
            ResetSettingList();
        }


        private void ResetSettingList()
        {
            TextTitle.text = Lan.Get(_currentGroup);

            List.RemoveChildrenToPool();
            if (string.IsNullOrEmpty(_currentGroup)) return;
            var options = Settings.Instance.GetOptionsByGroup(_currentGroup);

            foreach (var option in options)
            {
                if (List.AddItemFromPool() is SettingItem item)
                {
                    item.SetData(option);
                }
            }
        }

        private void UseBottomMenu()
        {
            BottomMenu.Use(this);
        }

        private void OnApplySettings()
        {
            var options = Settings.Instance.GetOptionsByGroup(_currentGroup);

            foreach (var option in options)
            {
                option.Apply();
            }
        }

        private void OnResetSettings()
        {
            var options = Settings.Instance.GetOptionsByGroup(_currentGroup);

            foreach (var option in options)
            {
                option.Reset();
            }
        }

        private void OnUICanceled(string action)
        {
            if (action == InputDef.UI.SubPrev)
            {
                if (List.GetChildAt(List.selectedIndex) is SettingItem item)
                {
                    item.OnPrev();
                }
            }
            else if (action == InputDef.UI.SubNext)
            {
                if (List.GetChildAt(List.selectedIndex) is SettingItem item)
                {
                    item.OnNext();
                }
            }
            else if (action == InputDef.UI.Up)
            {
                SetListSelected(List.selectedIndex - 1);
            }
            else if (action == InputDef.UI.Down)
            {
                if (List.selectedIndex < 0)
                {
                    SetListSelected(0);
                }
                else
                {
                    SetListSelected(List.selectedIndex + 1);
                }
            }
            else if (action == InputDef.UI.Back)
            {
                OnBack();
            }
            else if (action == InputDef.UI.Enter)
            {
                OnApplySettings();
            }
        }

        private void SetListSelected(int selectedIndex)
        {
            if (selectedIndex >= 0 && selectedIndex < List.numItems)
            {
                List.selectedIndex = selectedIndex;
                List.ScrollToView(List.selectedIndex);
            }

            OnClickListItem();
        }

        private void OnClickListItem()
        {
            var index = List.selectedIndex;
            if (index < 0)
            {
                return;
            }

            var settingItem = List.GetChildAt(index);
            if (settingItem is SettingItem item)
            {
                Introduce.TextName.text = Lan.Get(item.Option.Name);
                Introduce.TextIntroduce.text = Lan.Get(item.Option.Name);
                // Introduce.
            }
        }

        private void OnBack()
        {
            if (Settings.Instance.HaveNotAppleSettings())
            {
                MessageBox.Show("还有未保存的信息", (b) =>
                {
                    if (b)
                    {
                        Hide();
                    }
                });
            }
            else
            {
                Hide();
            }
        }

        protected override void OnHide()
        {
            base.OnHide();
            InputManager.OnUICanceled -= OnUICanceled;
        }

        protected override void OnDestroy()
        {
            base.OnDestroy();
            Menu.OnTabChange -= ChangeTab;
        }
    }
}