using System;
using UnityEngine;

namespace MedievalParty.Core
{
    public abstract class StateBehaviour: MonoBehaviour
    {
        private IState _currentState;
        private IState _onHoldState;

        protected virtual void Start()
        {
            _onHoldState = new OnHoldState();
            _currentState = _onHoldState;
        }

        protected virtual void Update()
        {
            _currentState.OnUpdate();
        }

        protected void ChangeState() => ChangeState(_onHoldState);
        protected void ChangeState(IState state)
        {
            _currentState.OnExit();
            _currentState = state;
            _currentState.OnEnter();
        }
    }

    internal class OnHoldState : IState
    {
        public void OnEnter() { }
        public void OnExit() { }
        public void OnUpdate() { }
    }
}