Day 1

src/main.cs

@@ -0,0 +1,78 @@
+using aoc2024;
+
+using aoc2024.Timer t = new("Full program");
+var types = System.Reflection.Assembly
+             .GetExecutingAssembly()
+             .GetTypes()
+             .Where(ty => ty.IsSubclassOf(typeof(Day)) && !ty.IsAbstract && ty.Name != "DayTemplate")
+             .OrderBy(ty => ty.Name).ToList();
+
+bool runAll = false;
+bool? runPart1 = null;
+bool? runPart2 = null;
+List<string> desiredDays = new();
+foreach (var arg in args)
+{
+    if (arg.Equals("-part1", StringComparison.CurrentCultureIgnoreCase))
+    {
+        runPart1 = true;
+    }
+    else if (arg.Equals("-part2", StringComparison.CurrentCultureIgnoreCase))
+    {
+        runPart2 = true;
+    }
+    else if (arg.Equals("all", StringComparison.CurrentCultureIgnoreCase))
+    {
+        runAll = true;
+    }
+    else
+    {
+        desiredDays.Add(arg);
+    }
+}
+
+if (runPart1 != null || runPart2 != null)
+{
+    runPart1 ??= false;
+    runPart2 ??= false;
+}
+
+if (runAll)
+{
+    foreach (var type in types)
+    {
+        using var day = (Day)Activator.CreateInstance(type)!;
+        day.Go(runPart1 ?? true, runPart2 ?? true);
+    }
+}
+else
+{
+    if (desiredDays.Count == 0)
+    {
+        desiredDays.Add("");
+    }
+
+    foreach (var desiredDay in desiredDays)
+    {
+        Day? day = null;
+        if (string.IsNullOrEmpty(desiredDay))
+        {
+            day = (Day) Activator.CreateInstance(types.Last())!;
+        }
+        else
+        {
+            var type = types.FirstOrDefault(x => x.Name == $"Day{desiredDay.PadLeft(2, '0')}");
+            if (type == null)
+            {
+                Logger.LogLine($"Unknown day <cyan>{desiredDay}<r>");
+            }
+            else
+            {
+                day = (Day?) Activator.CreateInstance(type);
+            }
+        }
+
+        day?.Go(runPart1 ?? true, runPart2 ?? true);
+        day?.Dispose();
+    }
+}