Perfect backup function

src/c#/GeneralUpdate.Core/Strategys/PlatformWindows/WindowsStrategy.cs

@@ -6,7 +6,9 @@
 using GeneralUpdate.Core.Pipelines.Context;
 using GeneralUpdate.Core.Pipelines.Middleware;
 using GeneralUpdate.Core.Utils;
+using GeneralUpdate.Differential;
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -86,11 +88,11 @@ public override bool StartApp(string appName, int appType)
                 {
                     case AppType.ClientApp:
                         Environment.SetEnvironmentVariable("ProcessBase64", Packet.ProcessBase64, EnvironmentVariableTarget.Machine);
-                        WaitForProcessToStart(path, TimeSpan.FromSeconds(60));
+                        WaitForProcessToStart(path, TimeSpan.FromSeconds(60), Restore);
                         break;
 
                     case AppType.UpgradeApp:
-                        WaitForProcessToStart(path, TimeSpan.FromSeconds(60));
+                        WaitForProcessToStart(path, TimeSpan.FromSeconds(60), Restore);
                         break;
                 }
                 return true;
@@ -137,24 +139,26 @@ private bool Clear()
         /// </summary>
         /// <param name="applicationPath">Process objects to monitor</param>
         /// <param name="timeout">The maximum interval for waiting for the process to start (The default value is 60 seconds).</param>
-        /// <param name="callbackAction">If the startup fails, the result is notified to the protection service.</param>
-        private void WaitForProcessToStart(string applicationPath, TimeSpan timeout, Action<string,string> callbackAction = null)
+        /// <param name="callbackAction"></param>
+        private void WaitForProcessToStart(string applicationPath, TimeSpan timeout, Action<string> callbackAction = null)
         {
             using (Process process = Process.Start(applicationPath))
             {
                 var startTime = DateTime.UtcNow;
                 while (DateTime.UtcNow - startTime < timeout)
                 {
+                    Thread.Sleep(2 * 1000);
                     if (!process.HasExited)
                     {
-                        callbackAction?.Invoke(applicationPath, Packet.TempPath);
+                        callbackAction?.Invoke(applicationPath);
                         return;
                     }
-                    Thread.Sleep(2 * 1000);
                 }
             }
         }
 
+        private void Restore(string targetDir) => DifferentialCore.Instance.Restore(targetDir);
+
         #endregion Private Methods
     }
 }

src/c#/GeneralUpdate.Differential/DifferentialCore.cs

@@ -236,8 +236,9 @@ public void Backup(string appPath, string patchPath)
             _backupFiles?.Push(files);
         }
 
-        public Stack<List<string>> GetBackups() => _backupFiles;
-
+        /// <summary>
+        /// Delete the backup file directory and recursively delete all backup content.
+        /// </summary>
         public void DeleteRootDir()
         {
             if (string.IsNullOrWhiteSpace(_backupRootDir)) return;
@@ -246,6 +247,33 @@ public void DeleteRootDir()
                 Directory.Delete(_backupRootDir, true);
         }
 
+        /// <summary>
+        /// Restore the backup files of each version to the original directory.
+        /// </summary>
+        /// <param name="targetDirectory"></param>
+        /// <returns></returns>
+        public bool Restore(string targetDirectory)
+        {
+            try
+            {
+                while (_backupFiles?.Count > 0)
+                {
+                    List<string> currentList = _backupFiles.Pop();
+                    foreach (var filePath in currentList)
+                    {
+                        string fileName = Path.GetFileName(filePath);
+                        string destFile = Path.Combine(targetDirectory, fileName);
+                        File.Copy(filePath, destFile, true);
+                    }
+                }
+                return true;
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
+
         #endregion Public Methods
 
         #region Private Methods
@@ -302,6 +330,9 @@ private Task DirtyUnknow(string appPath, string patchPath)
 
         private void OnCompressProgress(object sender, BaseCompressProgressEventArgs e) => _compressProgressCallback(sender, e);
 
+        /// <summary>
+        /// Create a root directory for backup files
+        /// </summary>
         private void CreateRootDirInTemp()
         {
             if (!string.IsNullOrEmpty(_backupRootDir)) return;
@@ -311,6 +342,10 @@ private void CreateRootDirInTemp()
             if (!Directory.Exists(_backupRootDir)) Directory.CreateDirectory(_backupRootDir);
         }
 
+        /// <summary>
+        /// Create a subfolder based on the root directory of the backup file for version-by-version backup.
+        /// </summary>
+        /// <returns></returns>
         private string CreateSubfolderInRootDir()
         {
             string subFolderName = DateTime.Now.ToString("yyyyMMddHHmmssffff");

src/c#/GeneralUpdate.sln

@@ -43,10 +43,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GeneralUpdate.Maui.OSS", "G
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GeneralUpdate.OSSClient", "GeneralUpdate.OSSClient\GeneralUpdate.OSSClient.csproj", "{2877DCA1-7EA6-42E9-A1C2-399B51E24893}"
 EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "service", "service", "{0315E141-AF1C-426D-A032-8D3A20502E3F}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GeneralUpdate.ProtectService", "GeneralUpdate.ProtectService\GeneralUpdate.ProtectService.csproj", "{ABEE5D49-CC5A-4366-BD50-E7625905D481}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -127,10 +123,6 @@ Global
 		{2877DCA1-7EA6-42E9-A1C2-399B51E24893}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2877DCA1-7EA6-42E9-A1C2-399B51E24893}.Release|Any CPU.Build.0 = Release|Any CPU
 		{2877DCA1-7EA6-42E9-A1C2-399B51E24893}.Release|Any CPU.Deploy.0 = Release|Any CPU
-		{ABEE5D49-CC5A-4366-BD50-E7625905D481}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{ABEE5D49-CC5A-4366-BD50-E7625905D481}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{ABEE5D49-CC5A-4366-BD50-E7625905D481}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{ABEE5D49-CC5A-4366-BD50-E7625905D481}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -153,7 +145,6 @@ Global
 		{9A28F525-124A-4019-8F09-BC48030E0E70} = {50B6BB53-63A9-414B-9BB0-79A69EEF6785}
 		{C4BDA544-2A6E-442C-B7D0-32CD7A996933} = {91F059E6-7AD3-4FB7-9604-30A7849C6EFF}
 		{2877DCA1-7EA6-42E9-A1C2-399B51E24893} = {74BE0282-A10D-4A81-A0F0-FAA79A6152B7}
-		{ABEE5D49-CC5A-4366-BD50-E7625905D481} = {0315E141-AF1C-426D-A032-8D3A20502E3F}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {A7B2D0AD-E000-4749-BAC0-FF21B9872805}