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

namespace BaseGames.Editor.Modules
{
    /// <summary>
    /// DataHub 武器模块 —— 管理 WeaponSO 资产。
    /// </summary>
    public class WeaponModule : IDataModule, IDataModuleOrdered
    {
        private const string Folder = "Assets/_Game/Data/Weapons";
        private const string Prefix = "WPN_";

        public string ModuleId    => "weapon";
        public string DisplayName => "武器";
        public string IconName    => null;
        public int    DisplayOrder => 10;

        private SoListPane<WeaponSO>   _listPane;
        private DetailHeader           _header;
        private VisualElement          _detailRoot;
        private WeaponSO               _selected;

        public void Initialize()
        {
            _listPane = new SoListPane<WeaponSO>(
                Folder, Prefix,
                w => w.weaponType.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 WeaponSO;

            // Header（重命名）
            _header = new DetailHeader();
            _header.SetAsset(_selected);
            _header.RenameRequested += OnRenameRequested;
            container.Add(_header);

            if (_selected == null) return;

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

            // 操作按钮行
            var toolbar = BuildActionBar(_selected);
            container.Add(toolbar);

            // 分隔线
            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(WeaponSO w)
        {
            var card = new VisualElement();
            card.style.flexDirection  = FlexDirection.Row;
            card.style.flexWrap       = Wrap.Wrap;
            card.style.paddingLeft    = 12;
            card.style.paddingRight   = 12;
            card.style.paddingTop     = 8;
            card.style.paddingBottom  = 8;
            card.style.marginBottom   = 4;
            card.style.backgroundColor = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.08f));
            card.style.borderBottomWidth = 1;
            card.style.borderBottomColor = new StyleColor(new Color(0.5f, 0.5f, 0.5f, 0.2f));

            AddStatChip(card, "类型",    w.weaponType.ToString());
            AddStatChip(card, "地面段数", (w.groundComboSteps?.Length ?? 0).ToString());
            AddStatChip(card, "空中段数", (w.airComboSteps?.Length ?? 0).ToString());
            AddStatChip(card, "ID",      string.IsNullOrEmpty(w.weaponId) ? "-" : w.weaponId);
            return card;
        }

        private static void AddStatChip(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 lbl = new Label(label + ":");
            lbl.style.opacity   = 0.6f;
            lbl.style.fontSize  = 11;
            lbl.style.marginRight = 3;
            chip.Add(lbl);

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

            parent.Add(chip);
        }

        private VisualElement BuildActionBar(WeaponSO w)
        {
            var bar = new VisualElement();
            bar.style.flexDirection = FlexDirection.Row;
            bar.style.paddingLeft   = 12;
            bar.style.paddingRight  = 12;
            bar.style.paddingTop    = 6;
            bar.style.paddingBottom = 6;
            bar.style.flexWrap      = Wrap.Wrap;

            var btnPing = new Button(() => { EditorGUIUtility.PingObject(w); Selection.activeObject = w; })
            { text = "在 Project 中定位", tooltip = "在 Project 窗口高亮此资产" };
            bar.Add(btnPing);

            var btnClone = new Button(() =>
            {
                var clone = AssetOperations.Clone(w, Folder);
                if (clone != null) _listPane.Refresh(clone);
            }) { text = "克隆..." };
            bar.Add(btnClone);

            var btnDel = new Button(() =>
            {
                if (AssetOperations.Delete(w)) _listPane.Refresh(null);
            }) { text = "删除" };
            btnDel.style.borderLeftColor   = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            btnDel.style.borderRightColor  = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            btnDel.style.borderTopColor    = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            btnDel.style.borderBottomColor = new StyleColor(new Color(0.8f, 0.3f, 0.3f, 0.6f));
            btnDel.style.borderLeftWidth   = 1;
            btnDel.style.borderRightWidth  = 1;
            btnDel.style.borderTopWidth    = 1;
            btnDel.style.borderBottomWidth = 1;
            btnDel.style.marginLeft  = 8;
            bar.Add(btnDel);

            return bar;
        }

        private 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;
        }
    }
}