Design-Patterns/patterns/state/WithoutStatePattern/Car.cs

namespace WithoutStatePattern;

public class Car
{
   private State _state = State.Off;

   public bool HandleInput(string input)
   {
      switch (input)
      {
         case "turn-clockwise":
            switch (_state)
            {
               case State.Off:
                  Console.WriteLine("The engine has started");
                  Console.WriteLine();
                  _state = State.Stopped;
                  break;
               case State.Stopped:
               case State.Driving:
                  Console.WriteLine("You hear a grinding noise...");
                  Console.WriteLine();
                  break;
            }
            break;
         case "turn-counter":
            switch (_state)
            {
               case State.Stopped:
                  Console.WriteLine("The engine has stopped");
                  Console.WriteLine();
                  _state = State.Off;
                  break;
               case State.Driving:
                  Console.WriteLine(
                     "The engine turns off, and the car stops suddenly"
                  );
                  Console.WriteLine();
                  _state = State.Off;
                  break;
            }
            break;
         case "gas":
            switch (_state)
            {
               case State.Stopped:
                  Console.WriteLine("The car begins to drive");
                  Console.WriteLine();
                  _state = State.Driving;
                  break;
            }
            break;
         case "brake":
            switch (_state)
            {
               case State.Driving:
                  Console.WriteLine("The car slows to a stop");
                  Console.WriteLine();
                  _state = State.Stopped;
                  break;
            }
            break;
         case "exit":
            return false;
      }
      return true;
   }

   private enum State
   {
      Off,
      Stopped,
      Driving,
   }
}