improve:改进日志功能

Ink Canvas/Helpers/LogHelper.cs

@@ -8,6 +8,9 @@ namespace Ink_Canvas.Helpers
     class LogHelper
     {
         public static string LogFile = "Log.txt";
+        private static string LogsFolder = "Logs";
+        private static string AppStartTime = DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss");
+        private static readonly long MaxLogsFolderSizeBytes = 5 * 1024 * 1024; // 5MB
 
         public static void NewLog(string str)
         {
@@ -28,14 +31,40 @@ namespace Ink_Canvas.Helpers
 
         public static void WriteLogToFile(string str, LogType logType = LogType.Info)
         {
+            // 检查日志是否启用
+            if (MainWindow.Settings != null && MainWindow.Settings.Advanced != null && !MainWindow.Settings.Advanced.IsLogEnabled) return;
+            
             string strLogType = logType.ToString();
             try
             {
-                var file = App.RootPath + LogFile;
+                string file;
+                
+                // 检查是否启用了日期保存功能
+                if (MainWindow.Settings != null && MainWindow.Settings.Advanced != null && MainWindow.Settings.Advanced.IsSaveLogByDate)
+                {
+                    // 确保Logs文件夹存在
+                    string logsPath = Path.Combine(App.RootPath, LogsFolder);
+                    if (!Directory.Exists(logsPath))
+                    {
+                        Directory.CreateDirectory(logsPath);
+                    }
+                    
+                    // 检查Logs文件夹大小，如果超过5MB则清空
+                    CheckAndCleanLogsFolder(logsPath);
+                    
+                    // 使用软件启动时间作为日志文件名
+                    file = Path.Combine(logsPath, $"Log_{AppStartTime}.txt");
+                }
+                else
+                {
+                    file = App.RootPath + LogFile;
+                }
+                
                 if (!Directory.Exists(App.RootPath))
                 {
                     Directory.CreateDirectory(App.RootPath);
                 }
+                
                 var threadId = Thread.CurrentThread.ManagedThreadId;
                 var callingMethod = new StackTrace(2, true).GetFrame(0);
                 string callerInfo = "<unknown>";
@@ -57,6 +86,45 @@ namespace Ink_Canvas.Helpers
             catch { }
         }
 
+        private static void CheckAndCleanLogsFolder(string logsPath)
+        {
+            try
+            {
+                long totalSize = 0;
+                DirectoryInfo dirInfo = new DirectoryInfo(logsPath);
+                
+                // 如果目录不存在，直接返回
+                if (!dirInfo.Exists) return;
+                
+                // 计算文件夹大小
+                foreach (FileInfo file in dirInfo.GetFiles())
+                {
+                    totalSize += file.Length;
+                }
+                
+                // 如果超过5MB，清空文件夹
+                if (totalSize > MaxLogsFolderSizeBytes)
+                {
+                    foreach (FileInfo file in dirInfo.GetFiles())
+                    {
+                        try
+                        {
+                            file.Delete();
+                        }
+                        catch { }
+                    }
+                    
+                    // 记录清理操作
+                    string cleanupMessage = $"Logs folder exceeded size limit ({totalSize / 1024.0 / 1024.0:F2} MB > {MaxLogsFolderSizeBytes / 1024.0 / 1024.0:F2} MB). Folder cleaned.";
+                    using (StreamWriter sw = new StreamWriter(Path.Combine(logsPath, $"Log_{AppStartTime}.txt"), true))
+                    {
+                        sw.WriteLine($"{DateTime.Now:O} [Cleanup] {cleanupMessage}");
+                    }
+                }
+            }
+            catch { }
+        }
+
         internal static void WriteLogToFile(string v, object warning)
         {
             WriteLogToFile($"[Warning] {v}", LogType.Warning);