namespace Dungeoneer {

	public sealed class Command {

		public static void Roll(IList<string> args) {
			var argc = args.Count;
			if(argc == 1) {
				if(args[0].Contains("d")) {
					var parts = args[0].Split('d');
					Roll(new List<string> { parts[1], parts[0] });
					return;
				}
				var arg = args[0];
				int sides;
				try { sides = int.Parse(arg); }
				catch(Exception _) {
					Console.WriteLine($"'{arg}' is not a number");
					return;
				}
				var result = Dungeoneer.Util.Roll(sides);
				Console.WriteLine($" -> {result}");
			} else if(argc == 2) {
				var result = 0;
				var first = args[0];
				int sides;
				try { sides = int.Parse(first); }
				catch(Exception _) {
					Console.WriteLine($"'{first}' is not a number");
					return;
				}
				var second = args[1];
				int count;
				try { count = int.Parse(second); }
				catch(Exception _) {
					Console.WriteLine($"'{second}' is not a number");
					return;
				}
				if(count == 1) {
					Roll(new List<string> { first });
					return;
				}

				var work = "";
				for(int _ = 0; _ < count; _++) {
					var roll = Dungeoneer.Util.Roll(sides);
					result += roll;
					work += $"{roll} ";
				}
				Console.WriteLine($"{work}\n -> {result}");
			} else
				Console.WriteLine($"'roll' accepts 1 or 2 arguments ({argc} given)");
		}

	}

}