using System;
using UnityEditor;
using UnityEditor.UIElements;
using UnityEngine;
using UnityEngine.UIElements;
using BaseGames.Boss;

namespace BaseGames.Editor.Modules
{
    /// <summary>
    /// DataHub Boss技能模块 —— Tab 切换管理 BossSkillSO 和 SkillSequenceSO。
    /// </summary>
    public class BossSkillModule : IDataModule, IDataModuleOrdered
    {
        private const string SkillFolder = "Assets/_Game/Data/Boss/Skills";
        private const string SeqFolder   = "Assets/_Game/Data/Boss/Sequences";

        public string ModuleId    => "boss";
        public string DisplayName => "Boss技能";
        public string IconName    => null;
        public int    DisplayOrder => 50;

        private int _activeTab = 0;

        private SoListPane<BossSkillSO>    _skillPane;
        private SoListPane<SkillSequenceSO> _seqPane;
        private Action<UnityEngine.Object>  _onSelected;

        private DetailHeader     _header;
        private BossSkillSO      _selectedSkill;
        private SkillSequenceSO  _selectedSeq;

        public void Initialize()
        {
            _skillPane = new SoListPane<BossSkillSO>(
                SkillFolder, "ABL_Boss_",
                s => s.category.ToString());
            _skillPane.SelectionChanged = s => { _selectedSkill = s; _onSelected?.Invoke(s); };

            _seqPane = new SoListPane<SkillSequenceSO>(SeqFolder, "ABL_Seq_");
            _seqPane.SelectionChanged = s => { _selectedSeq = s; _onSelected?.Invoke(s); };
        }

        public void BuildListPane(VisualElement container, Action<UnityEngine.Object> onSelected)
        {
            _onSelected = onSelected;
            container.style.flexDirection = FlexDirection.Column;

            // Tab bar
            var tabBar = new VisualElement();
            tabBar.style.flexDirection     = FlexDirection.Row;
            tabBar.style.borderBottomWidth = 1;
            tabBar.style.borderBottomColor = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.3f));
            container.Add(tabBar);

            var btnSkill = BuildTabBtn("技能 (Skill)", 0, tabBar);
            var btnSeq   = BuildTabBtn("序列 (Seq)",   1, tabBar);

            var listArea = new VisualElement();
            listArea.style.flexGrow = 1;
            container.Add(listArea);

            ShowTab(0, listArea, new[] { btnSkill, btnSeq });
            btnSkill.clicked += () => ShowTab(0, listArea, new[] { btnSkill, btnSeq });
            btnSeq.clicked   += () => ShowTab(1, listArea, new[] { btnSkill, btnSeq });

            _skillPane.Refresh();
            _seqPane.Refresh();
        }

        public void BuildDetailPane(VisualElement container, UnityEngine.Object selected)
        {
            _header = new DetailHeader();
            _header.SetAsset(selected);
            _header.RenameRequested += name => OnRenameRequested(selected, name);
            container.Add(_header);

            if (selected == null) return;

            if (selected is BossSkillSO skill)
            {
                container.Add(BuildSkillCard(skill));
                container.Add(BuildActionBar(skill, SkillFolder, _skillPane));
                container.Add(SkillModule.MakeDivider());
                var insp = new InspectorElement(skill);                container.Add(insp);
            }
            else if (selected is SkillSequenceSO seq)
            {
                container.Add(BuildSeqCard(seq));
                container.Add(BuildActionBar(seq, SeqFolder, _seqPane));
                container.Add(SkillModule.MakeDivider());
                var insp = new InspectorElement(seq);                container.Add(insp);
            }
        }

        public void OnActivated()
        {
            _skillPane?.Refresh();
            _seqPane?.Refresh();
        }

        // ── 内部 ─────────────────────────────────────────────────────────────

        private Button BuildTabBtn(string text, int tabIdx, VisualElement bar)
        {
            var btn = new Button { text = text };
            btn.style.flexGrow                = 1;
            btn.style.paddingTop              = 5;
            btn.style.paddingBottom           = 5;
            btn.style.borderTopLeftRadius     = 0;
            btn.style.borderTopRightRadius    = 0;
            btn.style.borderBottomLeftRadius  = 0;
            btn.style.borderBottomRightRadius = 0;
            btn.style.borderLeftWidth   = 0;
            btn.style.borderRightWidth  = 0;
            btn.style.borderTopWidth    = 0;
            btn.style.borderBottomWidth = 0;
            btn.style.backgroundColor = new StyleColor(Color.clear);
            btn.userData = tabIdx;
            bar.Add(btn);
            return btn;
        }

        private void ShowTab(int tab, VisualElement area, Button[] tabBtns)
        {
            _activeTab = tab;
            area.Clear();

            for (int i = 0; i < tabBtns.Length; i++)
            {
                if (i == tab)
                {
                    tabBtns[i].style.borderBottomWidth = 2;
                    tabBtns[i].style.borderBottomColor = new StyleColor(new Color(0.4f, 0.65f, 1f, 1f));
                    tabBtns[i].style.opacity = 1f;
                }
                else
                {
                    tabBtns[i].style.borderBottomWidth = 0;
                    tabBtns[i].style.opacity = 0.65f;
                }
            }

            if (tab == 0) { _skillPane.style.flexGrow = 1; area.Add(_skillPane); }
            else           { _seqPane.style.flexGrow   = 1; area.Add(_seqPane);   }
        }

        private void OnRenameRequested(UnityEngine.Object asset, string newName)
        {
            var (ok, err) = AssetOperations.Rename(asset, newName);
            if (!ok) EditorUtility.DisplayDialog("重命名失败", err, "确定");
            else
            {
                _header.SetAsset(asset);
                if (_activeTab == 0) _skillPane.Invalidate();
                else                 _seqPane.Invalidate();
            }
        }

        private static VisualElement BuildSkillCard(BossSkillSO s)
        {
            var card = SkillModule.MakeCard();
            SkillModule.AddChip(card, "分类",   s.category.ToString());
            SkillModule.AddChip(card, "类型",   s.skillType.ToString());
            SkillModule.AddChip(card, "模式数", (s.attackPatterns?.Length ?? 0).ToString());
            SkillModule.AddChip(card, "弱点窗口", (s.vulnerabilityWindows?.Length ?? 0).ToString());
            if (!string.IsNullOrEmpty(s.skillId))
                SkillModule.AddChip(card, "ID", s.skillId);
            return card;
        }

        private static VisualElement BuildSeqCard(SkillSequenceSO s)
        {
            var card = SkillModule.MakeCard();
            SkillModule.AddChip(card, "步骤数",  (s.steps?.Length ?? 0).ToString());
            SkillModule.AddChip(card, "循环",    s.RepeatIfPlayerInRange ? "是" : "否");
            SkillModule.AddChip(card, "最大循环次数", s.MaxRepeatCount.ToString());
            return card;
        }

        private VisualElement BuildActionBar<T>(T asset, string folder, SoListPane<T> pane)
            where T : ScriptableObject
        {
            var bar = SkillModule.MakeActionBar();
            new Button(() => { EditorGUIUtility.PingObject(asset); Selection.activeObject = asset; })
                { text = "定位" }.AlsoAddTo(bar);
            new Button(() =>
            {
                var c = AssetOperations.Clone(asset, folder);
                if (c != null) pane.Refresh(c);
            }) { text = "克隆..." }.AlsoAddTo(bar);
            var del = new Button(() =>
            {
                if (AssetOperations.Delete(asset)) pane.Refresh(null);
            }) { text = "删除" };
            del.style.borderLeftColor   = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            del.style.borderRightColor  = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            del.style.borderTopColor    = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            del.style.borderBottomColor = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            del.style.borderLeftWidth   = 1;
            del.style.borderRightWidth  = 1;
            del.style.borderTopWidth    = 1;
            del.style.borderBottomWidth = 1;
            del.style.marginLeft  = 8;
            del.AlsoAddTo(bar);
            return bar;
        }
    }
}