#if UNITY_EDITOR
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEngine;
using YooAsset.Editor;

namespace AOT.Editor.YooAssetTools
{
    /// <summary>
    /// 初始化 DefaultPackage 收集配置（Raw 热更 DLL）。
    /// </summary>
    public static class SetupBundleCollector
    {
        public const string PackageName = "DefaultPackage";
        public const string CollectPath = "Assets/Bundles/Raw";
        public const string DllBytesPath = "Assets/Bundles/Raw/HotUpdate.Runtime.bytes";

        [MenuItem("AIGame/YooAsset/Setup Bundle Collector")]
        public static string Setup()
        {
            Directory.CreateDirectory(CollectPath);
            EnsurePlaceholderDllBytes();

            var setting = BundleCollectorSettingData.Setting;
            setting.ShowPackageView = true;
            setting.UniqueBundleName = false;

            var package = setting.Packages.FirstOrDefault(p => p.PackageName == PackageName);
            if (package == null)
                package = BundleCollectorSettingData.CreatePackage(PackageName);

            package.PackageDesc = "启动必需：热更 DLL 等";
            package.EnableAddressable = true;
            package.SupportExtensionless = true;
            package.LocationToLower = false;
            package.IncludeAssetGUID = false;
            package.AutoCollectShaders = false;
            package.IgnoreRuleName = nameof(RawFileIgnoreRule);
            BundleCollectorSettingData.ModifyPackage(package);

            var group = package.Groups.FirstOrDefault(g => g.GroupName == "HotUpdateDll");
            if (group == null)
                group = BundleCollectorSettingData.CreateGroup(package, "HotUpdateDll");
            group.GroupDesc = "HybridCLR 热更程序集";
            group.ActiveRuleName = nameof(EnableGroup);
            group.AssetTags = "aot";
            BundleCollectorSettingData.ModifyGroup(package, group);

            var collector = group.Collectors.FirstOrDefault(c => c.CollectPath == CollectPath);
            if (collector == null)
            {
                collector = new BundleCollector
                {
                    CollectPath = CollectPath,
                    CollectorGUID = AssetDatabase.AssetPathToGUID(CollectPath),
                    CollectorType = ECollectorType.MainAssetCollector,
                    AddressRuleName = nameof(AddressByFileName),
                    PackRuleName = nameof(PackRawFile),
                    FilterRuleName = nameof(CollectAll),
                    AssetTags = "aot",
                };
                BundleCollectorSettingData.CreateCollector(group, collector);
            }
            else
            {
                collector.CollectorGUID = AssetDatabase.AssetPathToGUID(CollectPath);
                collector.CollectorType = ECollectorType.MainAssetCollector;
                collector.AddressRuleName = nameof(AddressByFileName);
                collector.PackRuleName = nameof(PackRawFile);
                collector.FilterRuleName = nameof(CollectAll);
                collector.AssetTags = "aot";
                BundleCollectorSettingData.ModifyCollector(group, collector);
            }

            package.CheckConfigError();
            BundleCollectorSettingData.SaveFile();
            return $"ok package={PackageName} collect={CollectPath} dll={DllBytesPath} setting={AssetDatabase.GetAssetPath(setting)}";
        }

        public static void EnsurePlaceholderDllBytes()
        {
            if (File.Exists(DllBytesPath))
                return;

            Directory.CreateDirectory(Path.GetDirectoryName(DllBytesPath) ?? CollectPath);
            // 占位：真实内容由 BuildAndStageHotUpdate 覆盖
            File.WriteAllBytes(DllBytesPath, System.Text.Encoding.UTF8.GetBytes("PLACEHOLDER_HOTUPDATE_DLL"));
            AssetDatabase.ImportAsset(DllBytesPath, ImportAssetOptions.ForceUpdate);
        }
    }
}
#endif