diff --git a/Ink Canvas/Helpers/AutoBackupManager.cs b/Ink Canvas/Helpers/AutoBackupManager.cs
new file mode 100644
index 00000000..badd4ecf
--- /dev/null
+++ b/Ink Canvas/Helpers/AutoBackupManager.cs
@@ -0,0 +1,216 @@
+using Ink_Canvas.Helpers;
+using Newtonsoft.Json;
+using System;
+using System.IO;
+using System.Linq;
+
+namespace Ink_Canvas.Helpers
+{
+ ///
+ /// 自动备份管理器
+ /// 负责管理配置文件的自动备份功能
+ ///
+ public static class AutoBackupManager
+ {
+ private static readonly string BackupDir = Path.Combine(App.RootPath, "Backups");
+ private static readonly string SettingsFile = Path.Combine(App.RootPath, "Configs", "Settings.json");
+ private static readonly string BackupPrefix = "Settings_AutoBackup_";
+
+ ///
+ /// 检查是否需要执行自动备份
+ ///
+ /// 设置对象
+ /// 如果需要备份返回true，否则返回false
+ public static bool ShouldPerformAutoBackup(Settings settings)
+ {
+ try
+ {
+ // 如果自动备份功能未启用，不执行备份
+ if (!settings.Advanced.IsAutoBackupEnabled)
+ {
+ return false;
+ }
+
+ // 如果从未备份过，需要创建首次备份
+ if (settings.Advanced.LastAutoBackupTime == DateTime.MinValue)
+ {
+ return true;
+ }
+
+ // 检查是否已超过备份间隔
+ var daysSinceLastBackup = (DateTime.Now - settings.Advanced.LastAutoBackupTime).TotalDays;
+ return daysSinceLastBackup >= settings.Advanced.AutoBackupIntervalDays;
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"检查自动备份条件时出错: {ex.Message}", LogHelper.LogType.Error);
+ return false;
+ }
+ }
+
+ ///
+ /// 执行自动备份
+ ///
+ /// 设置对象
+ /// 备份是否成功
+ public static bool PerformAutoBackup(Settings settings)
+ {
+ try
+ {
+ // 确保备份目录存在
+ if (!Directory.Exists(BackupDir))
+ {
+ Directory.CreateDirectory(BackupDir);
+ }
+
+ // 检查主配置文件是否存在
+ if (!File.Exists(SettingsFile))
+ {
+ LogHelper.WriteLogToFile("主配置文件不存在，跳过自动备份", LogHelper.LogType.Warning);
+ return false;
+ }
+
+ // 创建备份文件名（使用当前日期时间）
+ string backupFileName = $"{BackupPrefix}{DateTime.Now:yyyyMMdd_HHmmss}.json";
+ string backupPath = Path.Combine(BackupDir, backupFileName);
+
+ // 复制主配置文件到备份位置
+ File.Copy(SettingsFile, backupPath, true);
+
+ // 更新最后备份时间
+ settings.Advanced.LastAutoBackupTime = DateTime.Now;
+ MainWindow.SaveSettingsToFile();
+ return true;
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"执行自动备份时出错: {ex.Message}", LogHelper.LogType.Error);
+ return false;
+ }
+ }
+
+ ///
+ /// 尝试从备份恢复配置文件
+ ///
+ /// 恢复是否成功
+ public static bool TryRestoreFromBackup()
+ {
+ try
+ {
+ // 确保备份目录存在
+ if (!Directory.Exists(BackupDir))
+ {
+ LogHelper.WriteLogToFile("备份目录不存在，无法从备份恢复", LogHelper.LogType.Warning);
+ return false;
+ }
+
+ // 查找最新的备份文件
+ var backupFiles = Directory.GetFiles(BackupDir, $"{BackupPrefix}*.json")
+ .OrderByDescending(f => File.GetCreationTime(f))
+ .ToArray();
+
+ if (backupFiles.Length == 0)
+ {
+ LogHelper.WriteLogToFile("没有找到可用的备份文件", LogHelper.LogType.Warning);
+ return false;
+ }
+
+ // 尝试使用最新的备份文件
+ string latestBackup = backupFiles[0];
+
+ // 验证备份文件是否有效
+ try
+ {
+ string backupJson = File.ReadAllText(latestBackup);
+ var testSettings = JsonConvert.DeserializeObject(backupJson);
+ if (testSettings == null)
+ {
+ LogHelper.WriteLogToFile("备份文件内容无效，无法恢复", LogHelper.LogType.Error);
+ return false;
+ }
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"备份文件验证失败: {ex.Message}", LogHelper.LogType.Error);
+ return false;
+ }
+
+ // 备份当前损坏的配置文件（如果存在）
+ if (File.Exists(SettingsFile))
+ {
+ string corruptedBackup = Path.Combine(BackupDir, $"Settings_Corrupted_{DateTime.Now:yyyyMMdd_HHmmss}.json");
+ File.Copy(SettingsFile, corruptedBackup, true);
+ }
+
+ // 从备份恢复配置文件
+ File.Copy(latestBackup, SettingsFile, true);
+ return true;
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"从备份恢复配置文件时出错: {ex.Message}", LogHelper.LogType.Error);
+ return false;
+ }
+ }
+
+ ///
+ /// 清理过期的备份文件
+ /// 保留最近30天的备份文件
+ ///
+ public static void CleanupOldBackups()
+ {
+ try
+ {
+ if (!Directory.Exists(BackupDir))
+ {
+ return;
+ }
+
+ var cutoffDate = DateTime.Now.AddDays(-30);
+ var backupFiles = Directory.GetFiles(BackupDir, $"{BackupPrefix}*.json");
+
+ int deletedCount = 0;
+ foreach (var file in backupFiles)
+ {
+ if (File.GetCreationTime(file) < cutoffDate)
+ {
+ File.Delete(file);
+ deletedCount++;
+ }
+ }
+
+ if (deletedCount > 0)
+ {
+ }
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"清理过期备份文件时出错: {ex.Message}", LogHelper.LogType.Error);
+ }
+ }
+
+ ///
+ /// 初始化自动备份功能
+ /// 在应用程序启动时调用
+ ///
+ /// 设置对象
+ public static void Initialize(Settings settings)
+ {
+ try
+ {
+ // 检查是否需要执行自动备份
+ if (ShouldPerformAutoBackup(settings))
+ {
+ PerformAutoBackup(settings);
+ }
+
+ // 清理过期备份
+ CleanupOldBackups();
+ }
+ catch (Exception ex)
+ {
+ LogHelper.WriteLogToFile($"初始化自动备份功能时出错: {ex.Message}", LogHelper.LogType.Error);
+ }
+ }
+ }
+}
\ No newline at end of file
diff --git a/Ink Canvas/MainWindow.xaml b/Ink Canvas/MainWindow.xaml
index b614ee5c..49b07dd6 100644
--- a/Ink Canvas/MainWindow.xaml
+++ b/Ink Canvas/MainWindow.xaml
@@ -2333,6 +2333,28 @@
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