using UnityEditor;
using UnityEngine;
using BaseGames.Core.Save;
using BaseGames.World.Map;

namespace BaseGames.Editor.Setup
{
    /// <summary>
    /// 一键创建项目所需的非事件频道 ScriptableObject 资产占位件。
    /// 菜单：BaseGames → Setup → Create Project Assets
    ///
    /// 包含：
    ///   · Assets/_Game/Data/Save/SaveSecurityConfig.asset — HMAC 密钥容器（Addressable "SaveSecurityConfig"，运行时经 AssetLoader 加载）
    ///   · Assets/_Game/Data/World/Map/RegionRegistry.asset — 区域注册表（SaveSlotUI 用于查找背景图）
    ///   · Assets/_Game/Data/World/Map/MapDatabase.asset — 全局地图数据库
    /// </summary>
    public static class ProjectAssetSetup
    {
        [MenuItem("BaseGames/Setup/Create Project Assets")]
        public static void CreateAll()
        {
            CreateSaveSecurityConfig();
            CreateMapDatabase();      // 先于 RegionRegistry，使其能自动绑定 _mapDatabase
            CreateRegionRegistry();

            AssetDatabase.SaveAssets();
            AssetDatabase.Refresh();
            Debug.Log("[ProjectAssetSetup] 项目资产初始化完成。");
        }

        // ── SaveSecurityConfig ────────────────────────────────────────────────

        private static void CreateSaveSecurityConfig()
        {
            // 统一走 Addressables，不放 Resources。资产置于 Data/Save，并标 Addressable 地址 "SaveSecurityConfig"。
            const string folder    = "Assets/_Game/Data/Save";
            const string assetPath = folder + "/SaveSecurityConfig.asset";

            EnsureFolder("Assets/_Game/Data", "Save");

            if (AssetDatabase.LoadAssetAtPath<SaveSecurityConfig>(assetPath) == null)
            {
                var cfg = ScriptableObject.CreateInstance<SaveSecurityConfig>();
                // HmacKey 留空：开发期游戏正常运行（使用兜底密钥）；构建前由 CI/CD 注入。
                AssetDatabase.CreateAsset(cfg, assetPath);
                Debug.Log($"[ProjectAssetSetup] 已创建 {assetPath}（HmacKey 留空，构建前需注入）。");
            }
            else Debug.Log("[ProjectAssetSetup] SaveSecurityConfig 已存在。");

            MarkAddressable(assetPath, "SaveSecurityConfig");
        }

        /// <summary>将资产标记为 Addressable（置于默认组），并设置地址。</summary>
        private static void MarkAddressable(string assetPath, string address)
        {
            var settings = UnityEditor.AddressableAssets.AddressableAssetSettingsDefaultObject.Settings;
            if (settings == null)
            {
                Debug.LogWarning($"[ProjectAssetSetup] 无 Addressable 设置，无法标记 '{address}'。");
                return;
            }
            string guid  = AssetDatabase.AssetPathToGUID(assetPath);
            var    entry = settings.CreateOrMoveEntry(guid, settings.DefaultGroup);
            entry.SetAddress(address);
        }

        // ── RegionRegistry ────────────────────────────────────────────────────

        private static void CreateRegionRegistry()
        {
            const string folder    = "Assets/_Game/Data/World/Map";
            const string assetPath = folder + "/RegionRegistry.asset";

            EnsureFolder("Assets/_Game/Data", "World");
            EnsureFolder("Assets/_Game/Data/World", "Map");

            var registry = AssetDatabase.LoadAssetAtPath<RegionRegistrySO>(assetPath);
            bool created = false;
            if (registry == null)
            {
                registry = ScriptableObject.CreateInstance<RegionRegistrySO>();
                AssetDatabase.CreateAsset(registry, assetPath);
                created = true;
            }

            // 自动绑定 _mapDatabase（CreateMapDatabase 已先行创建）；幂等，已存在的也补绑
            var mapDb = AssetDatabase.LoadAssetAtPath<BaseGames.World.Map.MapDatabaseSO>(folder + "/MapDatabase.asset");
            if (mapDb != null)
            {
                var so = new SerializedObject(registry);
                var prop = so.FindProperty("_mapDatabase");
                if (prop != null && prop.objectReferenceValue != mapDb)
                {
                    prop.objectReferenceValue = mapDb;
                    so.ApplyModifiedProperties();
                    EditorUtility.SetDirty(registry);
                }
            }
            Debug.Log($"[ProjectAssetSetup] RegionRegistry {(created ? "已创建" : "已存在")}，_mapDatabase {(mapDb != null ? "已绑定" : "未找到 MapDatabase")}。请在 Inspector 中将 _regions 数组填入所有 RegionDefinitionSO。");
        }

        // ── MapDatabase ───────────────────────────────────────────────────────

        private static void CreateMapDatabase()
        {
            const string folder    = "Assets/_Game/Data/World/Map";
            const string assetPath = folder + "/MapDatabase.asset";

            if (AssetDatabase.LoadAssetAtPath<BaseGames.World.Map.MapDatabaseSO>(assetPath) != null)
            {
                Debug.Log("[ProjectAssetSetup] MapDatabase 已存在，跳过。");
                return;
            }

            EnsureFolder("Assets/_Game/Data", "World");
            EnsureFolder("Assets/_Game/Data/World", "Map");

            var db = ScriptableObject.CreateInstance<BaseGames.World.Map.MapDatabaseSO>();
            AssetDatabase.CreateAsset(db, assetPath);
            Debug.Log($"[ProjectAssetSetup] 已创建 {assetPath}。");
        }

        // ── 工具 ──────────────────────────────────────────────────────────────

        private static void EnsureFolder(string parent, string newFolder)
        {
            string fullPath = parent + "/" + newFolder;
            if (!AssetDatabase.IsValidFolder(fullPath))
                AssetDatabase.CreateFolder(parent, newFolder);
        }
    }
}