Add logging system

Logging/ILogger.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace RemSox.Logging
+{
+    public interface ILogger
+    {
+        void Log(string message, LogSeverity severity);
+
+        void LogInfo(string message);
+
+        void LogError(string message);
+
+        void LogWarning(string message);
+
+        IEnumerable<LogEntry> GetLogs(int? count = null);
+    }
+}

Logging/InMemoryLogger.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Collections.Concurrent;
+
+namespace RemSox.Logging
+{
+    public class InMemoryLogger : ILogger
+    {
+        readonly ConcurrentBag<LogEntry> logs = [];
+
+        public void Log(string message, LogSeverity severity)
+        {
+            logs.Add(new LogEntry(message, severity, DateTimeOffset.UtcNow));
+        }
+
+        public void LogError(string message)
+        {
+            Log(message, LogSeverity.Error);
+        }
+
+        public void LogInfo(string message)
+        {
+            Log(message, LogSeverity.Info);
+        }
+
+        public void LogWarning(string message)
+        {
+            Log(message, LogSeverity.Warning);
+        }
+
+        public IEnumerable<LogEntry> GetLogs(int? count = null)
+        {
+            IEnumerable<LogEntry> orderedLogs = logs.OrderBy(l => l.Timestamp);
+            return count.HasValue ? orderedLogs.TakeLast(count.Value) : orderedLogs;
+        }
+    }
+}

Logging/LogEntry.cs

@@ -0,0 +1,9 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace RemSox.Logging
+{
+    public record LogEntry(string Message, LogSeverity Severity, DateTimeOffset Timestamp);
+}

Logging/LogSeverity.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace RemSox.Logging
+{
+    public enum LogSeverity
+    {
+        Info,
+        Warning,
+        Error
+    }
+}

Logging/ProxyLogger.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace RemSox.Logging
+{
+    public class ProxyLogger(IEnumerable<ILogger> loggers) : ILogger
+    {
+        public void Log(string message, LogSeverity severity)
+        {
+            foreach (var logger in loggers)
+            {
+                logger.Log(message, severity);
+            }
+        }
+
+        public void LogError(string message)
+        {
+            Log(message, LogSeverity.Error);
+        }
+
+        public void LogInfo(string message)
+        {
+            Log(message, LogSeverity.Info);
+        }
+
+        public void LogWarning(string message)
+        {
+            Log(message, LogSeverity.Warning);
+        }
+
+        public IEnumerable<LogEntry> GetLogs(int? count = null)
+        {
+            return loggers.SelectMany(logger => logger.GetLogs(count / loggers.Count())).OrderBy(entry => entry.Timestamp);
+        }
+    }
+}