YooAsset/Assets/YooAsset/Runtime/PatchSystem/PlayMode/OfflinePlayModeImpl.cs

using System;
using System.Collections;
using System.Collections.Generic;

namespace YooAsset
{
	internal class OfflinePlayModeImpl : IPlayModeServices, IBundleServices
	{
		private PatchManifest _activePatchManifest;
		private string _packageName;
		private bool _locationToLower;

		/// <summary>
		/// 异步初始化
		/// </summary>
		public InitializationOperation InitializeAsync(string packageName, bool locationToLower)
		{
			_packageName = packageName;
			_locationToLower = locationToLower;
			var operation = new OfflinePlayModeInitializationOperation(this, packageName);
			OperationSystem.StartOperation(operation);
			return operation;
		}
		
		#region IPlayModeServices接口
		public PatchManifest ActivePatchManifest
		{
			set
			{
				_activePatchManifest = value;
				_activePatchManifest.InitAssetPathMapping(_locationToLower);
			}
			get
			{
				return _activePatchManifest;
			}
		}
		public string GetPackageVersion()
		{
			if (_activePatchManifest == null)
				return string.Empty;
			return _activePatchManifest.PackageVersion;
		}
		public bool IsBuildinPatchBundle(PatchBundle patchBundle)
		{
			return true;
		}

		UpdatePackageVersionOperation IPlayModeServices.UpdatePackageVersionAsync(bool appendTimeTicks, int timeout)
		{
			var operation = new OfflinePlayModeUpdatePackageVersionOperation();
			OperationSystem.StartOperation(operation);
			return operation;
		}
		UpdatePackageManifestOperation IPlayModeServices.UpdatePackageManifestAsync(string packageVersion, bool autoSaveManifest, bool autoActiveManifest, int timeout)
		{
			var operation = new OfflinePlayModeUpdatePackageManifestOperation();
			OperationSystem.StartOperation(operation);
			return operation;
		}
		CheckPackageContentsOperation IPlayModeServices.CheckPackageContentsAsync()
		{
			var operation = new OfflinePlayModeCheckPackageContentsOperation();
			OperationSystem.StartOperation(operation);
			return operation;
		}

		PatchDownloaderOperation IPlayModeServices.CreatePatchDownloaderByAll(int downloadingMaxNumber, int failedTryAgain, int timeout)
		{
			List<BundleInfo> downloadList = new List<BundleInfo>();
			var operation = new PatchDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
			return operation;
		}
		PatchDownloaderOperation IPlayModeServices.CreatePatchDownloaderByTags(string[] tags, int downloadingMaxNumber, int failedTryAgain, int timeout)
		{
			List<BundleInfo> downloadList = new List<BundleInfo>();
			var operation = new PatchDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
			return operation;
		}
		PatchDownloaderOperation IPlayModeServices.CreatePatchDownloaderByPaths(AssetInfo[] assetInfos, int downloadingMaxNumber, int failedTryAgain, int timeout)
		{
			List<BundleInfo> downloadList = new List<BundleInfo>();
			var operation = new PatchDownloaderOperation(downloadList, downloadingMaxNumber, failedTryAgain, timeout);
			return operation;
		}
		PatchUnpackerOperation IPlayModeServices.CreatePatchUnpackerByTags(string[] tags, int upackingMaxNumber, int failedTryAgain, int timeout)
		{
			List<BundleInfo> downloadList = new List<BundleInfo>();
			var operation = new PatchUnpackerOperation(downloadList, upackingMaxNumber, failedTryAgain, int.MaxValue);
			return operation;
		}
		PatchUnpackerOperation IPlayModeServices.CreatePatchUnpackerByAll(int upackingMaxNumber, int failedTryAgain, int timeout)
		{
			List<BundleInfo> downloadList = new List<BundleInfo>();
			var operation = new PatchUnpackerOperation(downloadList, upackingMaxNumber, failedTryAgain, int.MaxValue);
			return operation;
		}
		#endregion

		#region IBundleServices接口
		private BundleInfo CreateBundleInfo(PatchBundle patchBundle)
		{
			if (patchBundle == null)
				throw new Exception("Should never get here !");

			// 查询沙盒资源
			if (CacheSystem.IsCached(patchBundle))
			{
				BundleInfo bundleInfo = new BundleInfo(patchBundle, BundleInfo.ELoadMode.LoadFromCache);
				return bundleInfo;
			}

			// 查询APP资源
			{
				BundleInfo bundleInfo = new BundleInfo(patchBundle, BundleInfo.ELoadMode.LoadFromStreaming);
				return bundleInfo;
			}
		}
		BundleInfo IBundleServices.GetBundleInfo(AssetInfo assetInfo)
		{
			if (assetInfo.IsInvalid)
				throw new Exception("Should never get here !");

			// 注意：如果补丁清单里未找到资源包会抛出异常！
			var patchBundle = _activePatchManifest.GetMainPatchBundle(assetInfo.AssetPath);
			return CreateBundleInfo(patchBundle);
		}
		BundleInfo[] IBundleServices.GetAllDependBundleInfos(AssetInfo assetInfo)
		{
			if (assetInfo.IsInvalid)
				throw new Exception("Should never get here !");

			// 注意：如果补丁清单里未找到资源包会抛出异常！
			var depends = _activePatchManifest.GetAllDependencies(assetInfo.AssetPath);
			List<BundleInfo> result = new List<BundleInfo>(depends.Length);
			foreach (var patchBundle in depends)
			{
				BundleInfo bundleInfo = CreateBundleInfo(patchBundle);
				result.Add(bundleInfo);
			}
			return result.ToArray();
		}
		AssetInfo[] IBundleServices.GetAssetInfos(string[] tags)
		{
			return _activePatchManifest.GetAssetsInfoByTags(tags);
		}
		PatchAsset IBundleServices.TryGetPatchAsset(string assetPath)
		{
			if (_activePatchManifest.TryGetPatchAsset(assetPath, out PatchAsset patchAsset))
				return patchAsset;
			else
				return null;
		}
		string IBundleServices.MappingToAssetPath(string location)
		{
			return _activePatchManifest.MappingToAssetPath(location);
		}
		string IBundleServices.TryMappingToAssetPath(string location)
		{
			return _activePatchManifest.TryMappingToAssetPath(location);
		}
		string IBundleServices.GetPackageName()
		{
			return _packageName;
		}
		bool IBundleServices.IsIncludeBundleFile(string fileName)
		{
			return _activePatchManifest.IsIncludeBundleFile(fileName);
		}
		bool IBundleServices.IsServicesValid()
		{
			return _activePatchManifest != null;
		}
		#endregion
	}
}