using FSM.Machines;
using FSM.Recipes;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;

namespace FSM.States
{
    class RunningState : IEquipmentState
    {
        private Recipe _currentRecipe;
        private Timer _timer;

        public RunningState(Recipe recipe)
        {
            _currentRecipe = recipe;
            _timer = new Timer(3000);
            _timer.Elapsed += OnTimedEvent;
        }
        

        public void Enter()
        {
            Console.WriteLine(string.Format("Entering RunningState with recipe: {0}", _currentRecipe.Name));
            ExecuteCurrentStep();
            _timer.Start();
        }

        public void Exit()
        {
            Console.WriteLine("Exiting RunningState");
            _timer.Stop();
        }

        public bool HandleEvent(EquipmentEvent equipmentEvent, Machines.EquipmentStateMachine machine)
        {
            switch (equipmentEvent)
            {
                case EquipmentEvent.Pause:
                    machine.SetState(new PausedState(_currentRecipe));
                    return true;
                case EquipmentEvent.Stop:
                    machine.SetState(new IdleState());
                    return true;
                case EquipmentEvent.EmergencyStop:
                    machine.SetState(new EmergencyStoppedState());
                    return true;
                default:
                    return false;
            }
        }

        private void ExecuteCurrentStep()
        {
            var step = _currentRecipe.GetCurrentStep();
            if (string.IsNullOrEmpty(step))
            {
                Console.WriteLine("Recipe completed");
            }
            else
            {
                Console.WriteLine(string.Format("Execute step {0}: {1}", _currentRecipe.CurrentStepIndex + 1, step));
            }
        }

        private void OnTimedEvent(object sender, ElapsedEventArgs e)
        {
            if (_currentRecipe.MoveToNextStep())
            {
                ExecuteCurrentStep();
            }
            else
            {
                Console.WriteLine("Recipe completed");
                _timer.Stop();
            }
        }
    }
}