utilities feature

Gallery.Util/Log.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Diagnostics;
+
+namespace Gallery.Util
+{
+    public static class Log 
+    {
+        public static ILog Logger { get; set; } = new DefaultLogger();
+
+        public static void Print(string message)
+        {
+            Logger?.Print(message);
+        }
+
+        public static void Error(string category, string message)
+        {
+            Logger?.Error(category, message);
+        }
+    }
+
+    public class DefaultLogger : ILog
+    {
+        public void Print(string message)
+        {
+#if DEBUG
+            Debug.WriteLine("[{0:HH:mm:ss.fff}] - {1}", DateTime.Now, message);
+#endif
+        }
+
+        public void Error(string category, string message)
+        {
+            Debug.Fail(string.Format("[{0:HH:mm:ss.fff}] - {1} - {2}", DateTime.Now, category, message));
+        }
+    }
+
+    public interface ILog
+    {
+        void Print(string message);
+        void Error(string category, string message);
+    }
+}