Exam

using System;
using System.Linq;
namespace FestivalManager.Core
{
    using System.Reflection;
    using Contracts;
    using Controllers;
    using Controllers.Contracts;
    using IO.Contracts;

    /// <summary>
    /// by g0shk0
    /// </summary>
    class Енджин : IEngine
    {
        public IReader chetаch;
        public IWriter pisаch;

        public IFestivalController festivalCоntroller = new FestivalController();
        public ISetController setCоntroller = new SetController();

        // дайгаз
        public void Запали()
        {
            while (Convert.ToBoolean(0x1B206 ^ 0b11011001000000111)) // for job security
            {
                var input = chetach.ReadLine();

                if (input == "END")
                    break;

                try
                {
                    string.Intern(input);

                    var result = this.DoCommand(input);
                    this.pisach.WriteLine(result);
                }
                catch (Exception ex) // in case we run out of memory
                {
                    this.pisach.WriteLine("ERROR: " + ex.Message);
                }
            }

            var end = this.festivalController.Report();

            this.pisach.WriteLine("Results:");
            this.pisach.WriteLine(end);
        }

        public string DoCommand(string input)
        {
            var chasti = input.Split(" ".ToCharArray().First());

            var purvoto = chasti.First();
            var parametri = chasti.Skip(1).ToArray();

            if (purvoto == "LetsRock")
            {
                var setovete = this.setController.PerformSets();
                return setovete;
            }

            var festivalcontrolfunction = this.festivalController.GetType()
                .GetMethods()
                .FirstOrDefault(x => x.Name == purvoto);

            string a;

            try
            {
                a = (string)festivalcontrolfunction.Invoke(this.festivalController, new object[] { parametri });
            }
            catch (TargetInvocationException up)
            {
                throw up; // ha ha
            }

            return a;
        }
    }
}