using System;
using System.Collections.Generic;
using System.Threading;

namespace AssociationTask2
{
    class Program
    {
        static void Main(string[] args)
        {
            bool found;
            Input input = new Input();
            input.AddListener(ConsoleKey.W, () =>
            {
                Console.WriteLine("W press");
            });
            Console.WriteLine("Для выхода из цикла нажмите клавишу - Escape!");
            Thread thread = new Thread(() =>
            {
                while (true) input.Update();
            });
            thread.Start();

            while (input.Session)
            {

                //
            }
        }

        static void CallBack(WaitForButton waitFor)
        {
            waitFor(Console.ReadKey().Key);
        }
    }

    delegate void WaitForButton(ConsoleKey key);
    delegate Action SomeReaction(ConsoleKey key, out bool value);

    class Input
    {
        private Dictionary<ConsoleKey, Action> _dictionary;
        private SomeReaction _someReaction;
        private WaitForButton _makeSubscribe;
        private bool _session;

        public Input()
        {
            Session = true;
            Dictionary = new Dictionary<ConsoleKey, Action>();
            Dictionary.Add(ConsoleKey.Escape, () => Session = false);
            SomeReaction = GetReaction;
            MakeSubscribe = SubscriptionOnKey;
        }


        public Dictionary<ConsoleKey, Action> Dictionary { get => _dictionary; set => _dictionary = value; }
        public SomeReaction SomeReaction { get => _someReaction; set => _someReaction = value; }
        public WaitForButton MakeSubscribe { get => _makeSubscribe; set => _makeSubscribe = value; }
        public bool Session { get => _session; set => _session = value; }

        public void AddListener(ConsoleKey key, Action onPress)
        {
            if (_dictionary.ContainsKey(key))
            {
                _dictionary[key] += onPress;
            }
            else
            {
                _dictionary.Add(key, onPress);
            }
        }

        private void SubscriptionOnKey(ConsoleKey consoleKey)
        {
            Console.WriteLine($"Введите реакцию на клавишу - {consoleKey}:");
            string reaction = Console.ReadLine();
            Dictionary.Add(consoleKey, () =>
            {
                Console.WriteLine("\n" + reaction);
            });
        }

        private bool LookForReaction(ConsoleKey consoleKey, out Action action)
        {
            return Dictionary.TryGetValue(consoleKey, out action);
        }

        public void Update()
        {
            ConsoleKeyInfo key = Console.ReadKey(false);
            if (_dictionary.ContainsKey(key.Key))
            {
                _dictionary[key.Key].Invoke();
            }
        }

        private Action GetReaction(ConsoleKey consoleKey, out bool found)
        {
            Action action;
            found = LookForReaction(consoleKey, out action);
            if (found)
                return action;
            return () => Console.WriteLine($"\nНа клавишу - {consoleKey.ToString().ToLower()} нет подписки!");
        }

    }
}