using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace satyra
{
    public interface MessageStrategy
    {
        void sendmessage();
    }

    public abstract class AbstractStrategyFactory
    {
        public abstract MessageStrategy createStrategy(MessageBody mb);
    }

    public class MessageBody
    {
        Object payload;
        public Object getPayload()
        {
            return payload;
        }
        public void configure(Object obj)
        {
            payload = obj;
        }
        public void send(MessageStrategy ms)
        {
            ms.sendmessage();
        }
    }

    public class CMessageStrategy : MessageStrategy
    {
        public MessageBody body;
        public void sendmessage()
        {
            Object obj = body.getPayload();
            Console.WriteLine((string)obj);
        }
        public CMessageStrategy(MessageBody mb) { body = mb; }
    }

    public class DefaultFactory : AbstractStrategyFactory
    {
        private DefaultFactory() { ; }
        static DefaultFactory instance;
        public static AbstractStrategyFactory getInstance()
        {
            if (instance == null) instance = new DefaultFactory();
            return instance;
        }
        public override MessageStrategy createStrategy(MessageBody mb)
        {
            CMessageStrategy mg = new CMessageStrategy(mb);
            return mg;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            MessageBody mb = new MessageBody();
            mb.configure("  Hello world");
            AbstractStrategyFactory asf = DefaultFactory.getInstance();
            MessageStrategy strategy = asf.createStrategy(mb);
            mb.send(strategy);

            Console.ReadLine();
        }
    }
}