using System.Security.Cryptography;
using System.Text.RegularExpressions;

using Dungeoneer.Error;
using Dungeoneer.Interpreter;

namespace Dungeoneer {

	public static class RollMacro {

		public static void Pool(TokenSet input) {
			if(input.Count != 2)
				throw new SyntaxException($"expected 2 arguments ({input.Count} given)");

			DiceToken dicePool = null;
			DcToken target = null;
			foreach(var token in input) {
				switch(token) {
					case DiceToken dice:
						if(dicePool != null)
							throw new SyntaxException("two dice"); 
						dicePool = dice;
						break;
					case DcToken dc:
						if(target != null)
							throw new SyntaxException("two dc values");
						target = dc;
						break;
				}
			}

			bool success = false;
			foreach(var roll in dicePool.Result) {
				if(roll > target.Value) {
					success = true;
					break;
				}
			}

			string message = success ? $"{Format.Green}pass" : $"{Format.Red}fail";
			Console.WriteLine($"{dicePool} > {target}\n => {message}{Format.Reset}");
		}

	}

}