0.5.12

2026-06-22 00:54:26 +08:00 · 2026-03-10 21:25:47 +08:00
parent e1be072b97
commit 5003ff1be2
33 changed files with 2171 additions and 1021 deletions
--- a/LanMountainDesktop/Services/AppLogger.cs
+++ b/LanMountainDesktop/Services/AppLogger.cs
@@ -0,0 +1,169 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace LanMountainDesktop.Services;
+
+public static class AppLogger
+{
+    private static readonly object SyncRoot = new();
+    private static bool _initialized;
+    private static string _logDirectory = string.Empty;
+    private static string _logFilePath = string.Empty;
+
+    public static string LogDirectory
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logDirectory;
+        }
+    }
+
+    public static string LogFilePath
+    {
+        get
+        {
+            EnsureInitialized();
+            return _logFilePath;
+        }
+    }
+
+    public static void Initialize()
+    {
+        lock (SyncRoot)
+        {
+            if (_initialized)
+            {
+                return;
+            }
+
+            var preferredDirectory = Path.Combine(AppContext.BaseDirectory, "log");
+            var fallbackDirectory = Path.Combine(
+                Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+                "LanMountainDesktop",
+                "log");
+
+            var preferredReady = TryPrepareDirectory(preferredDirectory, out var preferredError);
+            var fallbackReady = false;
+            string? fallbackError = null;
+
+            if (preferredReady)
+            {
+                _logDirectory = preferredDirectory;
+            }
+            else
+            {
+                fallbackReady = TryPrepareDirectory(fallbackDirectory, out fallbackError);
+                _logDirectory = fallbackReady ? fallbackDirectory : preferredDirectory;
+            }
+
+            _logFilePath = Path.Combine(_logDirectory, $"app-{DateTime.Now:yyyyMMdd}.log");
+            _initialized = true;
+
+            WriteCore(
+                "INFO",
+                "Logger",
+                $"Initialized. Directory={_logDirectory}; File={_logFilePath}; PreferredDirectory={preferredDirectory}");
+
+            if (!preferredReady && !string.IsNullOrWhiteSpace(preferredError))
+            {
+                WriteCore(
+                    "WARN",
+                    "Logger",
+                    $"Failed to use program log directory '{preferredDirectory}'. Falling back to '{_logDirectory}'. Reason: {preferredError}");
+            }
+
+            if (!preferredReady && !fallbackReady && !string.IsNullOrWhiteSpace(fallbackError))
+            {
+                Trace.WriteLine(
+                    $"[LanMountainDesktop][Logger][ERROR] Failed to initialize fallback log directory '{fallbackDirectory}': {fallbackError}");
+            }
+        }
+    }
+
+    public static void Info(string category, string message)
+    {
+        Write("INFO", category, message, null);
+    }
+
+    public static void Warn(string category, string message, Exception? exception = null)
+    {
+        Write("WARN", category, message, exception);
+    }
+
+    public static void Error(string category, string message, Exception? exception = null)
+    {
+        Write("ERROR", category, message, exception);
+    }
+
+    public static void Critical(string category, string message, Exception? exception = null)
+    {
+        Write("CRITICAL", category, message, exception);
+    }
+
+    private static void Write(string level, string category, string message, Exception? exception)
+    {
+        EnsureInitialized();
+
+        var payload = exception is null
+            ? message
+            : $"{message}{Environment.NewLine}{exception}";
+        WriteCore(level, category, payload);
+    }
+
+    private static void EnsureInitialized()
+    {
+        if (_initialized)
+        {
+            return;
+        }
+
+        Initialize();
+    }
+
+    private static void WriteCore(string level, string category, string message)
+    {
+        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var line = $"[{timestamp}] [{level}] [{category}] {message}";
+
+        lock (SyncRoot)
+        {
+            try
+            {
+                var directory = Path.GetDirectoryName(_logFilePath);
+                if (!string.IsNullOrWhiteSpace(directory))
+                {
+                    Directory.CreateDirectory(directory);
+                }
+
+                File.AppendAllText(_logFilePath, line + Environment.NewLine, Encoding.UTF8);
+            }
+            catch (Exception ex)
+            {
+                Trace.WriteLine($"[LanMountainDesktop][Logger][ERROR] {ex}");
+            }
+        }
+
+        Trace.WriteLine(line);
+    }
+
+    private static bool TryPrepareDirectory(string directory, out string? error)
+    {
+        try
+        {
+            Directory.CreateDirectory(directory);
+            var probePath = Path.Combine(directory, $".probe-{Guid.NewGuid():N}.tmp");
+            File.WriteAllText(probePath, "probe");
+            File.Delete(probePath);
+            error = null;
+            return true;
+        }
+        catch (Exception ex)
+        {
+            error = ex.Message;
+            return false;
+        }
+    }
+}