using System;
using XWorld.Framework;

namespace XWorld.Server.Host
{
    public sealed class LoadedGameModule
    {
        public string GameId { get; }
        public int Version { get; }
        public Func<IGameServerRoom> CreateRoom { get; private set; }

        private GameModuleAlc _alc; // 强引用；Unload 时置空

        internal LoadedGameModule(string gameId, int version, GameModuleAlc alc, Func<IGameServerRoom> factory)
        {
            GameId = gameId; Version = version; _alc = alc; CreateRoom = factory;
        }

        // 卸载并返回 ALC 弱引用，便于上层做 GC 内存回收断言
        public WeakReference Unload()
        {
            var alc = _alc;
            _alc = null;
            // 切断工厂闭包对 entryType→Assembly→ALC 的引用链；卸载后再调用即抛错
            CreateRoom = () => throw new ObjectDisposedException($"GameModule {GameId}@{Version} 已卸载");
            var weak = new WeakReference(alc);
            alc.Unload();
            return weak;
        }
    }
}