A sImple state machine for a cycle, with an observer

simplestatemachinewithobserver.cs

using System.Diagnostics;
using System.Threading;
using System.Timers;
using TheNewStack;

namespace TheNewStack
{
    public enum SeasonalState { Spring, Summer, Autumn, Winter }

    public class SimpleStateMachineWithObserver
    {
        public Season CurrentSeason;

        public SimpleStateMachineWithObserver()
        {
            Farmer farmer = new Farmer();
            Season season = CurrentSeason = new Season(SeasonalState.Spring, farmer.SpringWelcome);

            season = season.NextSeason = new Season(SeasonalState.Summer, farmer.SummerWelcome);
            season = season.NextSeason = new Season(SeasonalState.Autumn, farmer.AutumnWelcome);
            season = season.NextSeason = new Season(SeasonalState.Winter, farmer.WinterWelcome);
            season.NextSeason = CurrentSeason;
        }

        public Season Next()
        {
            return CurrentSeason = CurrentSeason.NextSeason;
        }

        public class Season
        {
            readonly SeasonalState seasonstate;
            public Season NextSeason;
            private Action action;

            public Season(SeasonalState seasonstate, Action action)
            {
                this.seasonstate = seasonstate;
                this.action = action;
            }

            public void Welcome()
            {
                action();
            }

        }

    }

    public class Farmer
    {
        public void SpringWelcome() => Console.WriteLine("Spring is here. Spread the fertiliser!");
 
        public void SummerWelcome() => Console.WriteLine("Summer is here. Cut the hay!");

        public void AutumnWelcome() => Console.WriteLine("Autumn is here. Harvest time!");
     
        public void WinterWelcome() => Console.WriteLine("Winter is here. Feed the cows!");
       
    }

}

public class Program
{   
    static void Main(String[] args)
    {
        SimpleStateMachineWithObserver s = new SimpleStateMachineWithObserver();

        for (int i = 0; i < 6; i++)
        {
            s.CurrentSeason.Welcome();
            s.Next();
        }
    }
}