PartyReservationFilterModule

namespace _11.Party_Reservation_Filter_Module
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    public class Program
    {
        private static Dictionary<string, Func<string, string, bool>> allCriterias;
        private static List<KeyValuePair<string, string>> allFilters;

        public static void Main()
        {
            string[] allGuests = SplitStringToArray(Console.ReadLine(), ' ');

            allFilters = new List<KeyValuePair<string, string>>();

            Dictionary<string, Action<KeyValuePair<string, string>>> filterManager = new Dictionary<string, Action<KeyValuePair<string, string>>>
            {
                ["Add filter"] = kvp => allFilters.Add(kvp),
                ["Remove filter"] = kvp => allFilters.Remove(kvp),
            };

            string inputLine;
            while ((inputLine = Console.ReadLine()) != "Print")
            {
                string[] commandArgs = SplitStringToArray(inputLine, ';');

                string filterManageInfo = commandArgs[0];
                string criteria = commandArgs[1];
                string toMatch = commandArgs[2];

                filterManager[filterManageInfo](new KeyValuePair<string, string>(criteria, toMatch));
            }

            allCriterias = new Dictionary<string, Func<string, string, bool>>
            {
                ["Starts with"] = (n, s) => n.StartsWith(s),
                ["Ends with"] = (n, s) => n.EndsWith(s),
                ["Length"] = (n, s) => n.Length == int.Parse(s),
                ["Contains"] = (n, s) => n.Contains(s)
            };

            Console.WriteLine(string.Join(" ", allGuests.Where(g => !GuestIsFiltered(g))));
        }

        private static bool GuestIsFiltered(string guest)
        {
            bool isFiltered = false;

            foreach (KeyValuePair<string, string> kvp in allFilters)
            {
                if (allCriterias[kvp.Key](guest, kvp.Value))
                {
                    isFiltered = true;
                    break;
                }
            }

            return isFiltered;
        }

        private static string[] SplitStringToArray(string toSplit, char toSplitBy)
        {
            return toSplit.Split(new[] { toSplitBy }, StringSplitOptions.RemoveEmptyEntries);
        }
    }
}