Feature/ copy fnc (#1)

Copy Funktion integriert

---------

Co-authored-by: Black_Betty <Black_Betty@DESKTOP-GA9LVM3>
Reviewed-on: #1

Methods/Settings.cs

@@ -0,0 +1,206 @@
+using System;
+using System.IO;
+using System.Xml.Serialization;
+using System.Linq;
+using System.Collections.ObjectModel;
+
+namespace TapeCatalog.Methods
+{
+    /// <summary>
+    /// Simple settings container and load/save helpers.
+    /// </summary>
+    [Serializable]
+    public class SettingsData
+    {
+        public string SourceDirectory { get; set; }
+        public string ArchiveDirectory { get; set; }
+        public string XmlDirectory { get; set; }
+
+        public static SettingsData Default => new SettingsData
+        {
+            SourceDirectory = string.Empty,
+            ArchiveDirectory = string.Empty,
+            XmlDirectory = string.Empty
+        };
+    }
+
+    public static class SettingsManager
+    {
+        private const string DefaultFileName = "appsettings.xml";
+
+        public static void Save(SettingsData data, string filePath = null)
+        {
+            if (data == null) throw new ArgumentNullException(nameof(data));
+            var path = string.IsNullOrWhiteSpace(filePath) ? DefaultFileName : filePath;
+            try
+            {
+                using (var fs = File.Create(path))
+                {
+                    var ser = new XmlSerializer(typeof(SettingsData));
+                    ser.Serialize(fs, data);
+                }
+            }
+            catch
+            {
+                // swallow errors; callers can handle existence/permission issues
+            }
+        }
+
+        public static SettingsData Load(string filePath = null)
+        {
+            var path = string.IsNullOrWhiteSpace(filePath) ? DefaultFileName : filePath;
+            if (!File.Exists(path)) return SettingsData.Default;
+            try
+            {
+                using (var fs = File.OpenRead(path))
+                {
+                    var ser = new XmlSerializer(typeof(SettingsData));
+                    return ser.Deserialize(fs) as SettingsData ?? SettingsData.Default;
+                }
+            }
+            catch
+            {
+                return SettingsData.Default;
+            }
+        }
+    }
+
+    // UI-related helpers used by the Settings tab. These methods avoid direct UI manipulation
+    // and return data so the MainWindow can update controls.
+    public static class SettingsUi
+    {
+        public static string SelectDirectory(string description)
+        {
+            using (var dlg = new System.Windows.Forms.FolderBrowserDialog())
+            {
+                dlg.Description = description ?? "Select a folder";
+                dlg.ShowNewFolderButton = true;
+                var result = dlg.ShowDialog();
+                if (result == System.Windows.Forms.DialogResult.OK && !string.IsNullOrWhiteSpace(dlg.SelectedPath))
+                    return dlg.SelectedPath;
+            }
+            return null;
+        }
+
+        public static int ScanSource(string path, ObservableCollection<TapeCatalog.FileEntry> files)
+        {
+            if (string.IsNullOrWhiteSpace(path)) throw new ArgumentException("path");
+            if (!Directory.Exists(path)) throw new DirectoryNotFoundException(path);
+
+            // normalize source root for reliable relative path calculation
+            var rootFull = System.IO.Path.GetFullPath(path).TrimEnd(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+
+            foreach (var file in Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories))
+            {
+                try
+                {
+                    var fi = new FileInfo(file);
+                    // compute directory relative to source root (remove the source root prefix)
+                    var dirFull = System.IO.Path.GetFullPath(fi.DirectoryName).TrimEnd(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+                    string relativeDir = string.Empty;
+                    if (dirFull.StartsWith(rootFull, StringComparison.OrdinalIgnoreCase))
+                        relativeDir = dirFull.Length == rootFull.Length ? string.Empty : dirFull.Substring(rootFull.Length).TrimStart(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+                    else
+                        relativeDir = fi.DirectoryName;
+
+                    var existing = files.FirstOrDefault(f => string.Equals(f.Filename, fi.Name, StringComparison.OrdinalIgnoreCase)
+                                                               && string.Equals(f.FileDir, relativeDir, StringComparison.OrdinalIgnoreCase));
+                    if (existing != null)
+                    {
+                        var newSizeMb = FormatBytesToMb(fi.Length);
+                        if (existing.SizeSrc != newSizeMb)
+                        {
+                            existing.SizeSrc = newSizeMb;
+                            existing.ModSrc = fi.LastWriteTime.ToString();
+                            existing.Status = string.Empty;
+                            existing.ArcDrive = string.Empty;
+                        }
+                    }
+                    else
+                    {
+                        files.Add(new TapeCatalog.FileEntry
+                        {
+                            Filename = fi.Name,
+                            FileDir = relativeDir,
+                            SizeSrc = FormatBytesToMb(fi.Length),
+                            ModSrc = fi.LastWriteTime.ToString(),
+                        });
+                    }
+                }
+                catch
+                {
+                    // ignore inaccessible files
+                }
+            }
+            return files.Count;
+        }
+
+        public static int ScanArchive(string path, ObservableCollection<TapeCatalog.FileEntry> files)
+        {
+            if (string.IsNullOrWhiteSpace(path)) throw new ArgumentException("path");
+            if (!Directory.Exists(path)) throw new DirectoryNotFoundException(path);
+            // normalize archive root for reliable relative path calculation
+            var rootFull = System.IO.Path.GetFullPath(path).TrimEnd(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+
+            foreach (var file in Directory.EnumerateFiles(path, "*.*", SearchOption.AllDirectories))
+            {
+                try
+                {
+                    var fi = new FileInfo(file);
+
+                    var dirFull = System.IO.Path.GetFullPath(fi.DirectoryName).TrimEnd(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+                    string relativeDir = string.Empty;
+                    if (dirFull.StartsWith(rootFull, StringComparison.OrdinalIgnoreCase))
+                        relativeDir = dirFull.Length == rootFull.Length ? string.Empty : dirFull.Substring(rootFull.Length).TrimStart(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+                    else
+                        relativeDir = fi.DirectoryName;
+
+                    var existing = files.FirstOrDefault(f => string.Equals(f.Filename, fi.Name, StringComparison.Ordinal)
+                                                               && string.Equals(f.FileDir, relativeDir, StringComparison.OrdinalIgnoreCase));
+                    if (existing != null)
+                    {
+                        existing.SizeArc = FormatBytesToMb(fi.Length);
+                        DateTime prevMod;
+                        if (!DateTime.TryParse(existing.ModArc, out prevMod)) prevMod = DateTime.MinValue;
+                        var mod = fi.LastWriteTime > prevMod ? fi.LastWriteTime : prevMod;
+                        existing.ModArc = mod.ToString();
+                    }
+                    else
+                    {
+                        files.Add(new TapeCatalog.FileEntry
+                        {
+                            Filename = fi.Name,
+                            FileDir = relativeDir,
+                            SizeArc = FormatBytesToMb(fi.Length),
+                            ModArc = fi.LastWriteTime.ToString()
+                        });
+                    }
+                }
+                catch
+                {
+                    // ignore inaccessible files
+                }
+            }
+            return files.Count;
+        }
+
+        public static string[] GetXmlFiles(string xmlPath)
+        {
+            if (string.IsNullOrWhiteSpace(xmlPath) || !Directory.Exists(xmlPath)) return new string[0];
+            try
+            {
+                return Directory.GetFiles(xmlPath, "*.xml", SearchOption.TopDirectoryOnly);
+            }
+            catch
+            {
+                return new string[0];
+            }
+        }
+
+        private static string FormatBytesToMb(long bytes)
+        {
+            double mb = bytes / 1024.0 / 1024.0;
+            return mb.ToString("F2");
+        }
+    }
+}