Huge refactor; Passing tests

SimpleHttpServer/Logger.cs

@@ -0,0 +1,61 @@
+using System.Diagnostics;
+
+namespace SimpleHttpServer;
+public class Logger {
+    private readonly string topic;
+    private readonly LogOutputTopic ltopic;
+    private readonly bool printToConsole;
+    private readonly SimpleHttpServerConfiguration.CustomLogMessageHandler? externalLogMsgHandler;
+
+    internal Logger(LogOutputTopic topic, SimpleHttpServerConfiguration conf) {
+        this.topic = Enum.GetName(topic) ?? throw new ArgumentException("The given LogOutputTopic is not defined!");
+        ltopic = topic;
+        externalLogMsgHandler = conf.LogMessageHandler;
+        printToConsole = !conf.DisableLogMessagePrinting;
+    }
+
+    private readonly object writeLock = new();
+    public void Log(string message, LogOutputLevel level) {
+        var fgColor = level switch {
+            LogOutputLevel.Debug => ConsoleColor.Gray,
+            LogOutputLevel.Information => ConsoleColor.White,
+            LogOutputLevel.Warning => ConsoleColor.Yellow,
+            LogOutputLevel.Error => ConsoleColor.Red,
+            LogOutputLevel.Fatal => ConsoleColor.Magenta,
+            _ => throw new NotImplementedException(),
+        };
+
+        if (printToConsole)
+            lock (writeLock) {
+                var origColor = Console.ForegroundColor;
+                Console.ForegroundColor = fgColor;
+                Console.WriteLine($"[{topic}] {message}");
+                Console.ForegroundColor = origColor;
+            }
+
+        externalLogMsgHandler?.Invoke(ltopic, message, level);
+    }
+
+    [Conditional("DEBUG")]
+    public void Debug(string message) => Log(message, LogOutputLevel.Debug);
+    public void Information(string message) => Log(message, LogOutputLevel.Information);
+    public void Warning(string message) => Log(message, LogOutputLevel.Warning);
+    public void Error(string message) => Log(message, LogOutputLevel.Error);
+    public void Fatal(string message) => Log(message, LogOutputLevel.Fatal);
+
+}
+
+public enum LogOutputLevel {
+    Debug,
+    Information,
+    Warning,
+    Error,
+    Fatal
+}
+
+public enum LogOutputTopic {
+    Main,
+    Request,
+    Security
+}
+