Added to custom logging service using Seq.

Cajetan.OF-DL/Cajetan.OF-DL.csproj

@@ -23,4 +23,8 @@
     <ProjectReference Include="..\OF DL\OF DL.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Serilog.Sinks.Seq" Version="7.0.1" />
+  </ItemGroup>
+
 </Project>

Cajetan.OF-DL/Services/SeqLoggingService.cs

@@ -0,0 +1,50 @@
+using OF_DL.Enumerations;
+using Serilog;
+using Serilog.Core;
+using Serilog.Events;
+
+namespace OF_DL.Services;
+
+public class SeqLoggingService : ILoggingService
+{
+    public SeqLoggingService()
+    {
+        LevelSwitch = new LoggingLevelSwitch();
+        InitializeLoggerWithSeq();
+    }
+
+    /// <summary>
+    /// Gets the level switch that controls runtime logging verbosity.
+    /// </summary>
+    public LoggingLevelSwitch LevelSwitch { get; }
+
+    /// <summary>
+    /// Updates the minimum logging level at runtime.
+    /// </summary>
+    /// <param name="newLevel">The new minimum log level.</param>
+    public void UpdateLoggingLevel(LoggingLevel newLevel)
+    {
+        LevelSwitch.MinimumLevel = (LogEventLevel)newLevel;
+        Log.Debug("Logging level updated to: {LoggingLevel}", newLevel);
+    }
+
+    /// <summary>
+    /// Returns the current minimum logging level.
+    /// </summary>
+    public LoggingLevel GetCurrentLoggingLevel() => (LoggingLevel)LevelSwitch.MinimumLevel;
+
+    private void InitializeLoggerWithSeq()
+    {
+        Log.Logger = new LoggerConfiguration()
+            .Enrich.FromLogContext()
+            .Enrich.WithProperty("Application", "OF_DL")
+            .Enrich.WithProperty("StartTime", $"{DateTime.Now:yyyy-MM-dd HH:mm:ss} ")
+            .Enrich.WithProperty("MachineName", Environment.MachineName)
+            .MinimumLevel.ControlledBy(LevelSwitch)
+            .WriteTo.File("logs/OFDL.txt", rollingInterval: RollingInterval.Day, restrictedToMinimumLevel: LogEventLevel.Error)
+            .WriteTo.Seq("https://seq.cajetan.dk")
+            .CreateLogger();
+
+        Log.Debug("Logging service initialized");
+    }
+}