Add backup and restore

v2rayN/ServiceLib/Common/FileManager.cs

@@ -106,7 +106,12 @@ namespace ServiceLib.Common
         {
             try
             {
-                ZipFile.CreateFromDirectory(sourceDirectoryName, destinationArchiveFileName);
+                if (File.Exists(destinationArchiveFileName))
+                {
+                    File.Delete(destinationArchiveFileName);
+                }
+
+                ZipFile.CreateFromDirectory(sourceDirectoryName, destinationArchiveFileName, CompressionLevel.SmallestSize, true);
             }
             catch (Exception ex)
             {
@@ -115,5 +120,42 @@ namespace ServiceLib.Common
             }
             return true;
         }
+
+        public static void CopyDirectory(string sourceDir, string destinationDir, bool recursive, string ignoredName)
+        {
+            // Get information about the source directory
+            var dir = new DirectoryInfo(sourceDir);
+
+            // Check if the source directory exists
+            if (!dir.Exists)
+                throw new DirectoryNotFoundException($"Source directory not found: {dir.FullName}");
+
+            // Cache directories before we start copying
+            DirectoryInfo[] dirs = dir.GetDirectories();
+
+            // Create the destination directory
+            Directory.CreateDirectory(destinationDir);
+
+            // Get the files in the source directory and copy to the destination directory
+            foreach (FileInfo file in dir.GetFiles())
+            {
+                if (!Utils.IsNullOrEmpty(ignoredName) && file.Name.Contains(ignoredName))
+                {
+                    continue;
+                }
+                string targetFilePath = Path.Combine(destinationDir, file.Name);
+                file.CopyTo(targetFilePath);
+            }
+
+            // If recursive and copying subdirectories, recursively call this method
+            if (recursive)
+            {
+                foreach (DirectoryInfo subDir in dirs)
+                {
+                    string newDestinationDir = Path.Combine(destinationDir, subDir.Name);
+                    CopyDirectory(subDir.FullName, newDestinationDir, true, ignoredName);
+                }
+            }
+        }
     }
 }