using System.Reflection;
using Cysharp.Threading.Tasks;
using SHFrame;
using UnityEngine;
using YooAsset;

namespace HotMain.SHGame.Procedure
{
    public class ProcedureLoadHot : ProcedureBase
    {
        
        protected override void OnEnter(SHFrame.FSM.IFsm<IProcedureManager> procedureOwner)
        {
            base.OnEnter(procedureOwner);
            MainLoad(procedureOwner).Forget();
        }

        private async UniTask MainLoad(SHFrame.FSM.IFsm<IProcedureManager> procedureOwner)
        {
            // 加载热更dll
            foreach (var name in ProcedureInitializePackage.HotDllName)
            {
                await LoadHotfixDll(ProcedureInitializePackage.RawFilePackageName, name);
            }

            // 实例化热更新入口 执行游戏初始化（配置表初始化、UI模块初始化、获取玩家数据之类的操作）
            ResourcePackage package = YooAssets.GetPackage(ProcedureInitializePackage.DefaultPackageName);
            var go = await LoadGameObject(package, "HotPrefab");
            go.name = $"Resource_{package.GetPackageVersion()}_{YooAssets.GetPackage(ProcedureInitializePackage.RawFilePackageName).GetPackageVersion()}";
            Log.Warning($"Prefab name is {go.name}");
        }
        
        public static async UniTask<Assembly> LoadHotfixDll(string packageName, string name)
        {
            Log.Warning($"加载热更dll：{name}");
            var package = YooAssets.GetPackage(packageName);
            var handle = package.LoadRawFileAsync(name);
            await handle.ToUniTask();
            var dllBytes = handle.GetRawFileData();
            var assembly = Assembly.Load(dllBytes);
            Log.Warning($"加载热更dll完成：{name}");
            return assembly;
        }

        /// <summary>
        ///     异步加载GameObject
        /// </summary>
        /// <param name="package"></param>
        /// <param name="assetNames">YooAsset中打包的资源名称</param>
        /// <returns>返回GameObject</returns>
        public static async UniTask<GameObject> LoadGameObject(ResourcePackage package, string assetNames)
        {
            var handle = package.LoadAssetAsync<GameObject>(assetNames);
            await handle.ToUniTask();
            return handle.InstantiateSync();
        }
        
    }
}