using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

namespace BaseGames.Editor.Modules
{
    /// <summary>
    /// 批量验证结果窗口：以可滚动列表展示各项配置问题，
    /// 每条记录附带"选中"按钮，点击后高亮并选中对应资产（EditorGUIUtility.PingObject）。
    /// 支持 Error/Warning Tab 切换与文本搜索过滤。
    /// 由各验证模块（QuestModule、DialogueModule、NpcModule）在检测到问题时弹出。
    /// </summary>
    internal class QuestValidationResultWindow : EditorWindow
    {
        internal struct Issue
        {
            public string             message;
            public bool               isError;
            public UnityEngine.Object asset;   // null = 无对应资产（如孤儿触发器）
        }

        private List<Issue> _issues;
        private int         _errorCount;
        private int         _warnCount;
        private int         _totalItems;
        private string      _itemLabel = "资产";
        private Vector2     _scroll;

        // ── 过滤状态 ─────────────────────────────────────────────────────────
        private enum TabMode { All, ErrorsOnly, WarnsOnly }
        private TabMode _tab      = TabMode.All;
        private string  _filter   = "";

        private static readonly GUIStyle s_tabActive   = null; // 延迟初始化
        private static readonly GUIStyle s_tabInactive = null;

        // ── 打开入口 ──────────────────────────────────────────────────────────

        internal static void Show(List<Issue> issues, int errorCount, int warnCount, int totalItems, string windowTitle = "批量验证结果", string itemLabel = "资产")
        {
            var win = GetWindow<QuestValidationResultWindow>(true, windowTitle, true);
            win._issues      = issues;
            win._errorCount  = errorCount;
            win._warnCount   = warnCount;
            win._totalItems  = totalItems;
            win._itemLabel   = itemLabel;
            win._tab         = TabMode.All;
            win._filter      = "";
            win.minSize      = new Vector2(560, 380);
            win.Show();
        }

        // ── 绘制 ──────────────────────────────────────────────────────────────

        private void OnGUI()
        {
            if (_issues == null) { EditorGUILayout.LabelField("无数据。"); return; }

            bool clean = _errorCount == 0 && _warnCount == 0;

            // ── 标题摘要 ──
            EditorGUILayout.Space(6);
            var summaryStyle = new GUIStyle(EditorStyles.boldLabel) { fontSize = 12 };
            if (clean) summaryStyle.normal.textColor = new Color(0.2f, 0.75f, 0.2f);

            string prefix  = clean ? "✅ " : (_errorCount > 0 ? "❌ " : "⚠ ");
            string summary = $"{prefix}验证完成：{_totalItems} 个{_itemLabel} · {_errorCount} 个错误 · {_warnCount} 个警告";
            EditorGUILayout.LabelField(summary, summaryStyle);
            EditorGUILayout.Space(4);

            if (clean)
            {
                EditorGUILayout.LabelField($"所有 {_itemLabel} 配置均合法！", EditorStyles.centeredGreyMiniLabel);
                return;
            }

            // ── 分隔线 ──
            var divRect = EditorGUILayout.GetControlRect(false, 1);
            EditorGUI.DrawRect(divRect, new Color(0.35f, 0.35f, 0.35f));
            EditorGUILayout.Space(4);

            // ── Tab 切换 + 搜索框 ──
            EditorGUILayout.BeginHorizontal();
            DrawTab("全部",   TabMode.All,        _issues.Count);
            DrawTab("错误",   TabMode.ErrorsOnly, _errorCount);
            DrawTab("警告",   TabMode.WarnsOnly,  _warnCount);
            GUILayout.FlexibleSpace();
            GUILayout.Label("🔍", GUILayout.Width(18));
            _filter = EditorGUILayout.TextField(_filter, GUILayout.Width(180));
            if (GUILayout.Button("×", GUILayout.Width(22))) _filter = "";
            EditorGUILayout.EndHorizontal();
            EditorGUILayout.Space(4);

            // ── 问题列表 ──
            _scroll = EditorGUILayout.BeginScrollView(_scroll);
            int shown = 0;
            foreach (var issue in _issues)
            {
                if (!MatchesFilter(issue)) continue;
                shown++;
                DrawIssueRow(issue);
                EditorGUILayout.Space(2);
            }
            if (shown == 0)
                EditorGUILayout.LabelField("（当前过滤条件下无结果）", EditorStyles.centeredGreyMiniLabel);
            EditorGUILayout.EndScrollView();

            // ── 底部状态栏 ──
            EditorGUILayout.Space(2);
            var statusRect = EditorGUILayout.GetControlRect(false, 1);
            EditorGUI.DrawRect(statusRect, new Color(0.3f, 0.3f, 0.3f));
            EditorGUILayout.LabelField(
                $"显示 {shown} / {_issues.Count} 条",
                EditorStyles.centeredGreyMiniLabel);
        }

        // ── 辅助方法 ─────────────────────────────────────────────────────────

        private bool MatchesFilter(Issue issue)
        {
            if (_tab == TabMode.ErrorsOnly && !issue.isError) return false;
            if (_tab == TabMode.WarnsOnly  &&  issue.isError) return false;
            if (!string.IsNullOrEmpty(_filter))
            {
                bool msgMatch   = issue.message.Contains(_filter, System.StringComparison.OrdinalIgnoreCase);
                bool assetMatch = issue.asset != null &&
                                  issue.asset.name.Contains(_filter, System.StringComparison.OrdinalIgnoreCase);
                if (!msgMatch && !assetMatch) return false;
            }
            return true;
        }

        private void DrawTab(string label, TabMode mode, int count)
        {
            bool active  = _tab == mode;
            var  style   = active
                ? new GUIStyle(EditorStyles.miniButtonMid) { fontStyle = FontStyle.Bold }
                : EditorStyles.miniButtonMid;
            if (active) style.normal.textColor = new Color(0.4f, 0.8f, 1f);
            string text = $"{label} ({count})";
            if (GUILayout.Button(text, style, GUILayout.MinWidth(72)))
                _tab = mode;
        }

        private static void DrawIssueRow(Issue issue)
        {
            EditorGUILayout.BeginHorizontal(EditorStyles.helpBox);

            // 图标
            var iconContent = issue.isError
                ? EditorGUIUtility.IconContent("console.erroricon.sml")
                : EditorGUIUtility.IconContent("console.warnicon.sml");
            GUILayout.Label(iconContent, GUILayout.Width(20), GUILayout.Height(18));

            // 消息文字
            EditorGUILayout.LabelField(issue.message, EditorStyles.wordWrappedLabel);

            // 定位按钮（有资产引用时显示）
            if (issue.asset != null)
            {
                if (GUILayout.Button("选中", GUILayout.Width(40), GUILayout.Height(18)))
                {
                    EditorGUIUtility.PingObject(issue.asset);
                    Selection.activeObject = issue.asset;
                }
            }

            EditorGUILayout.EndHorizontal();
        }
    }
}