using System;
using UnityEngine;

namespace AI.FSM
{
    public class ChaseStateMachine : MonoBehaviour, IFiniteStateMachine
    {
        [SerializeField] private Transform player;
        
        private IState _currentState;
        
        // private IdleState _idleState;
        // private PlayerDetectedState _playerDetectedState;
        // // ...

        // private void Awake()
        // {
        //     _idleState = new IdleState();
        //     _playerDetectedState = new PlayerDetectedState();
        //     // ...
        // }

        private void OnEnable()
        {
            ChangeState(new IdleState(gameObject, player, 30.0f));
        }
        
        private void OnDisable()
        {
            ChangeState(null);
        }

        public void Update()
        {
            _currentState?.Update(this);
        }

        public void ChangeState(IState state)
        {
            _currentState?.Exit(this);
            _currentState = state;
            _currentState?.Enter(this);
        }

        // public void ChangeState(States state)
        // {
        //     _currentState?.Exit(this);
        //
        //     switch (state)
        //     {
        //         case States.Idle:
        //             _currentState = _idleState;
        //             break;
        //         case States.PlayerDetected:
        //             _currentState = _playerDetectedState;
        //             break;
        //         case States.PlayerInRange:
        //             break;
        //         case States.PlayerOutOfRange:
        //             break;
        //         default:
        //             throw new ArgumentOutOfRangeException(nameof(state), state, null);
        //     }
        //     
        //     _currentState?.Enter(this);
        // }
    }
}