using System;
using UnityEngine;

namespace AI.FSM
{
    public class IdleState : IState
    {
        private GameObject _owner;
        private Transform _player;
        private float _viewAngle;

        public IdleState(GameObject owner, Transform player, float viewAngle)
        {
            _owner = owner;
            _player = player;
            _viewAngle = viewAngle;
        }
        
        public void Enter(IFiniteStateMachine fsm)
        {
            Debug.Log("IdleState Enter");
        }

        public void Update(IFiniteStateMachine fsm)
        {
            Debug.Log("IdleState Update");
            
            // view angle
            float angle = Vector3.Angle(_owner.transform.forward, _player.position - _owner.transform.position);
            if (angle > _viewAngle) return;
            
            // raycast
            RaycastHit hit;
            if (!Physics.Raycast(_owner.transform.position, _player.position - _owner.transform.position, out hit,
                    100f))
            {
                return;
            }
            
            PlayerController playerController = hit.collider.GetComponent<PlayerController>();
            if (!playerController) return;

            fsm.SetState(new PlayerDetectedState(_owner, _player, 10.0f));
        }

        public void Exit(IFiniteStateMachine fsm)
        {
            Debug.Log("IdleState Exit");
        }
    }
}