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

namespace BaseGames.Editor.Modules
{
    /// <summary>
    /// DataHub 技能模块 —— 管理 FormSkillSO 资产。
    /// </summary>
    public class SkillModule : IDataModule, IDataModuleOrdered
    {
        private const string Folder = "Assets/_Game/Data/Skills";
        private const string Prefix = "SKL_";

        public string ModuleId    => "skill";
        public string DisplayName => "技能";
        public string IconName    => null;
        public int    DisplayOrder => 20;

        private SoListPane<FormSkillSO> _listPane;
        private DetailHeader            _header;
        private FormSkillSO             _selected;

        public void Initialize()
        {
            _listPane = new SoListPane<FormSkillSO>(
                Folder, Prefix,
                s => s.resourceType.ToString());
        }

        public void BuildListPane(VisualElement container, Action<UnityEngine.Object> onSelected)
        {
            _listPane.SelectionChanged = sel =>
            {
                _selected = sel;
                onSelected?.Invoke(sel);
            };
            container.Add(_listPane);
            _listPane.Refresh();
        }

        public void BuildDetailPane(VisualElement container, UnityEngine.Object selected)
        {
            _selected = selected as FormSkillSO;

            _header = new DetailHeader();
            _header.SetAsset(_selected);
            _header.RenameRequested += OnRenameRequested;
            container.Add(_header);

            if (_selected == null) return;

            // Stats Card
            var card = BuildStatsCard(_selected);
            container.Add(card);

            // 操作按钮
            container.Add(BuildActionBar(_selected));
            container.Add(MakeDivider());

            // Inspector
            var insp = new InspectorElement(_selected);            container.Add(insp);
        }

        public void OnActivated() => _listPane?.Refresh();

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

        private void OnRenameRequested(string newName)
        {
            if (_selected == null) return;
            var (ok, err) = AssetOperations.Rename(_selected, newName);
            if (!ok) EditorUtility.DisplayDialog("重命名失败", err, "确定");
            else { _header.SetAsset(_selected); _listPane.Invalidate(); }
        }

        private static VisualElement BuildStatsCard(FormSkillSO s)
        {
            var card = MakeCard();
            AddChip(card, "效果类型",   s.effectType.ToString());
            AddChip(card, "资源类型",   s.resourceType.ToString());
            AddChip(card, "冷却",        $"{s.cooldown:F1}s");
            AddChip(card, "消耗",        s.baseCost.ToString());
            if (!string.IsNullOrEmpty(s.skillId))
                AddChip(card, "ID", s.skillId);
            return card;
        }

        private VisualElement BuildActionBar(FormSkillSO s)
        {
            var bar = MakeActionBar();

            new Button(() => { EditorGUIUtility.PingObject(s); Selection.activeObject = s; })
                { text = "定位" }.AlsoAddTo(bar);

            new Button(() => { var c = AssetOperations.Clone(s, Folder); if (c != null) _listPane.Refresh(c); })
                { text = "克隆..." }.AlsoAddTo(bar);

            var del = new Button(() => { if (AssetOperations.Delete(s)) _listPane.Refresh(null); }) { text = "删除" };
            ApplyDeleteStyle(del);
            del.AlsoAddTo(bar);

            return bar;
        }

        // ── 共享构建辅助 ─────────────────────────────────────────────────────

        internal static VisualElement MakeCard()
        {
            var c = new VisualElement();
            c.style.flexDirection   = FlexDirection.Row;
            c.style.flexWrap        = Wrap.Wrap;
            c.style.paddingLeft     = 12;
            c.style.paddingRight    = 12;
            c.style.paddingTop      = 8;
            c.style.paddingBottom   = 8;
            c.style.marginBottom    = 4;
            c.style.backgroundColor  = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.08f));
            c.style.borderBottomWidth = 1;
            c.style.borderBottomColor = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.2f));
            return c;
        }

        internal static void AddChip(VisualElement parent, string label, string value)
        {
            var chip = new VisualElement();
            chip.style.flexDirection = FlexDirection.Row;
            chip.style.alignItems    = Align.Center;
            chip.style.marginRight   = 14;
            chip.style.marginBottom  = 2;

            var l = new Label(label + ":");
            l.style.opacity   = 0.6f;
            l.style.fontSize  = 11;
            l.style.marginRight = 3;
            chip.Add(l);

            var v = new Label(value);
            v.style.fontSize = 11;
            v.style.unityFontStyleAndWeight = UnityEngine.FontStyle.Bold;
            chip.Add(v);
            parent.Add(chip);
        }

        internal static VisualElement MakeActionBar()
        {
            var b = new VisualElement();
            b.style.flexDirection = FlexDirection.Row;
            b.style.paddingLeft   = 12;
            b.style.paddingRight  = 12;
            b.style.paddingTop    = 6;
            b.style.paddingBottom = 6;
            b.style.flexWrap      = Wrap.Wrap;
            return b;
        }

        internal static VisualElement MakeDivider()
        {
            var d = new VisualElement();
            d.style.height          = 1;
            d.style.backgroundColor = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.2f));
            return d;
        }

        /// <summary>将删除按钮染成红色边框，统一各模块样式。</summary>
        internal static void ApplyDeleteStyle(Button btn)
        {
            var red = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            btn.style.borderLeftColor   = red;
            btn.style.borderRightColor  = red;
            btn.style.borderTopColor    = red;
            btn.style.borderBottomColor = red;
            btn.style.borderLeftWidth   = 1;
            btn.style.borderRightWidth  = 1;
            btn.style.borderTopWidth    = 1;
            btn.style.borderBottomWidth = 1;
            btn.style.marginLeft        = 8;
        }

        /// <summary>
        /// 为任意 ScriptableObject 模块生成标准 ActionBar（新建 / 定位 / 克隆 / 删除）。
        /// 各模块可在返回后向 bar 追加额外按钮。
        /// </summary>
        /// <param name="asset">当前选中资产。</param>
        /// <param name="folder">资产所在文件夹（用于新建 / 克隆）。</param>
        /// <param name="prefix">新建资产的文件名前缀。</param>
        /// <param name="onCreated">新建完成回调（传入新资产）。</param>
        /// <param name="onCloned">克隆完成回调（传入克隆资产）。</param>
        /// <param name="onDeleted">删除完成回调。</param>
        internal static VisualElement BuildStandardActionBar<T>(
            T asset,
            string folder,
            string prefix,
            Action<T>         onCreated,
            Action<T>         onCloned,
            Action            onDeleted,
            Action<Action<T>> wizardCreate = null) where T : UnityEngine.ScriptableObject
        {
            var bar = MakeActionBar();

            new Button(() =>
            {
                if (wizardCreate != null)
                {
                    wizardCreate(c => onCreated?.Invoke(c));
                }
                else
                {
                    var c = AssetOperations.Create<T>(folder, prefix + "New");
                    if (c != null) onCreated?.Invoke(c);
                }
            }) { text = "新建" }.AlsoAddTo(bar);

            new Button(() =>
            {
                EditorGUIUtility.PingObject(asset);
                Selection.activeObject = asset;
            }) { text = "定位" }.AlsoAddTo(bar);

            new Button(() =>
            {
                var c = AssetOperations.Clone(asset, folder);
                if (c != null) onCloned?.Invoke(c);
            }) { text = "克隆..." }.AlsoAddTo(bar);

            var del = new Button(() =>
            {
                if (AssetOperations.Delete(asset)) onDeleted?.Invoke();
            }) { text = "删除" };
            ApplyDeleteStyle(del);
            del.AlsoAddTo(bar);

            return bar;
        }
    }

    // ── Button 扩展（模块内共用）─────────────────────────────────────────────
    internal static class ButtonExtensions
    {
        public static Button AlsoAddTo(this Button btn, VisualElement parent)
        {
            parent.Add(btn);
            return btn;
        }
    }
}