using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.Assertions;
using YooAsset;

namespace Stary.Evo
{
    public class ResEditorSimulateState : AbstractFSMIStateAsync
    {
        public ResEditorSimulateState(IFsmSystemAsync system) : base(system)
        {
        }

        public override async UniTask OnEnterAsync()
        {
            Debug.Log("UnityEvo:开始资源更新...");


            //  //初始化读取资源配置表
            var package = YooAssets.GetPackage(AppConfig.PackageDomainName);
            // 请求资源版本
            var requetVersionOp = package.RequestPackageVersionAsync();
            await requetVersionOp;
            string packageVersion = "";
            if (requetVersionOp.Status == EOperationStatus.Succeed)
            {
                //更新成功
                packageVersion = requetVersionOp.PackageVersion;
                CustomPlayerPrefs.SetString($"{AppConfig.PackageDomainName}_GAME_VERSION", packageVersion);
                Debug.Log($"UnityEvo:获取资源版本 Version : 【{packageVersion}】");
                Debug.Log($"UnityEvo:开始加载服务器资源...");
            }
            else
            {
                Debug.LogError($"UnityEvo:获取资源版本失败: 【{requetVersionOp.Error}】");
                //FsmSystem.SetCurState(nameof(ResUpdateLocalState));
                return;
            }

            // Assert.AreEqual(EOperationStatus.Succeed, requetVersionOp.Status);


            // 更新资源清单
            var updateManifestOp = package.UpdatePackageManifestAsync(packageVersion);
            await updateManifestOp;
            if (updateManifestOp.Status == EOperationStatus.Succeed)
            {
                //更新成功
                Debug.Log($"UnityEvo:更新资源清单 updateManifest : 【成功】");
            }
            else
            {
                //更新失败
                Debug.LogError($"UnityEvo:更新资源清单失败: 【{updateManifestOp.Error}】");
            }

            Assert.AreEqual(EOperationStatus.Succeed, updateManifestOp.Status);


            //4.下载补丁包
            await Download();

            if (AppConfig.DeveloperMode)
            {
                //加载热更配置文件
                var loadHotfixSettingsOp = package.LoadAssetAsync<DomainConfig>("Config_DomainConfig");
                await loadHotfixSettingsOp;
                DomainConfig domainConfig = null;
                if (loadHotfixSettingsOp.Status == EOperationStatus.Succeed)
                {
                    //更新成功
                    Debug.Log($"UnityEvo:加载热更配置文件 loadHotfixSettings : 【成功】");
                    domainConfig = loadHotfixSettingsOp.AssetObject as DomainConfig;
                }
                else
                {
                    Debug.LogError($"UnityEvo:加载热更配置文件 loadHotfixSettings : 【失败】");
                }


                if (domainConfig == null)
                {
                    Debug.LogError($"UnityEvo:【{package.PackageName}】加载DomainConfig为空，无法继续执行后续流程，请检查！！！");
                }

                FsmSystem.SetCurState(nameof(HotFixDllState), domainConfig);
            }
            else if (HybridClREntrance.Global.stage == StageType.Originality)
            {
                //加载热更配置文件
                var loadArtSceneDataOp = package.LoadAssetAsync<ArtSceneData>("Config_ArtSceneData");
                await loadArtSceneDataOp;
                ArtSceneData artSceneData = null;
                if (loadArtSceneDataOp.Status == EOperationStatus.Succeed)
                {
                    //更新成功
                    Debug.Log($"UnityEvo:加载热更配置文件 ArtSceneData : 【成功】");
                    artSceneData = loadArtSceneDataOp.AssetObject as ArtSceneData;
                    await FsmSystem.SetCurState(nameof(ResStartState), null);
                }
                else
                {
                    Debug.LogError($"UnityEvo:加载热更配置文件 ArtSceneData : 【失败】");
                }


                if (artSceneData == null)
                {
                    Debug.LogError($"UnityEvo:【{package.PackageName}】加载ArtSceneData为空，无法继续执行后续流程，请检查！！！");
                }
            }
        }


        #region 下载热更资源

        public async UniTask Download()
        {
            int downloadingMaxNum = 10;
            int failedTryAgain = 3;
            var package = YooAssets.GetPackage(AppConfig.PackageDomainName);
            var downloader = package.CreateResourceDownloader(downloadingMaxNum, failedTryAgain);

            //没有需要下载的资源
            if (downloader.TotalDownloadCount == 0)
            {
                Debug.Log("UnityEvo:没有需要下载的资源,跳过更新");
                return;
            }

            //需要下载的文件总数和总大小
            int totalDownloadCount = downloader.TotalDownloadCount;
            long totalDownloadBytes = downloader.TotalDownloadBytes;
            Debug.Log($"UnityEvo:需要下载的资源的个数【{totalDownloadCount}】,需要下载的资源的总大小{totalDownloadBytes / 1024} MB");
            //===================================适应新版本YooAsset插件的修改===================================
            //注册回调方法
            downloader.DownloadErrorCallback = OnDownloadErrorFunction;
            downloader.DownloadUpdateCallback = OnDownloadProgressUpdateFunction;
            downloader.DownloadFinishCallback = OnDownloadOverFunction;
            downloader.DownloadFileBeginCallback = OnStartDownloadFileFunction;
            //===================================适应新版本YooAsset插件的修改===================================

            //开启下载
            downloader.BeginDownload();
            await downloader;

            //检测下载结果
            if (downloader.Status == EOperationStatus.Succeed)
            {
                //下载成功
                Debug.Log("UnityEvo:资源更新完成");
            }
            else
            {
                //下载失败
                Debug.Log("UnityEvo:资源更新失败");
            }
        }

        //===================================适应新版本YooAsset插件的修改===================================
        /// <summary>
        /// 开始下载
        /// </summary>
        private void OnStartDownloadFileFunction(DownloadFileData downloadFileData)
        {
            Debug.Log(
                $"UnityEvo:开始下载：文件名：{downloadFileData.FileName}，文件大小：{downloadFileData.FileSize / 1024f / 1024f} MB");
        }

        /// <summary>
        /// 下载完成
        /// </summary>
        private void OnDownloadOverFunction(DownloaderFinishData downloaderFinishData)
        {
            Debug.Log("UnityEvo:下载" + (downloaderFinishData.Succeed ? "成功" : "失败"));
        }

        /// <summary>
        /// 更新中
        /// </summary>
        private void OnDownloadProgressUpdateFunction(DownloadUpdateData downloadUpdateData)
        {
            Debug.Log(
                $"UnityEvo:文件总数：{downloadUpdateData.TotalDownloadCount}，已下载文件数：{downloadUpdateData.CurrentDownloadCount}，下载总大小：{downloadUpdateData.TotalDownloadBytes / 1024f / 1024f} MB，已下载大小{downloadUpdateData.CurrentDownloadBytes / 1024f / 1024f} MB");
        }

        /// <summary>
        /// 下载出错
        /// </summary>
        /// <param name="errorData"></param>
        private void OnDownloadErrorFunction(DownloadErrorData errorData)
        {
            Debug.Log($"UnityEvo:下载出错：包名:{errorData.PackageName} 文件名：{errorData.FileName}，错误信息：{errorData.ErrorInfo}");
        }
        //===================================适应新版本YooAsset插件的修改===================================

        #endregion
    }
}