using System.Numerics;
using TreeEditor;
using UnityEngine;
using Quaternion = UnityEngine.Quaternion;
using Vector3 = UnityEngine.Vector3;
public class PlayerController : MonoBehaviour
{
    [SerializeField]
    float _speed = 10.0f;
    
    private Vector3 _destPos;
    
    void Start()
    {
        // Managers.Input.KeytAction -= OnKyeboard;
        // Managers.Input.KeytAction += OnKyeboard;
        Managers.Input.MouseAction -= OnMouseClicked;
        Managers.Input.MouseAction += OnMouseClicked;

        Managers.Resource.Instantiate("UI/UI_Button");
    }
    
    public enum PlayerState
    {
        Die,
        Moving,
        Idle,
    }

    PlayerState _state = PlayerState.Idle;

    void UpdateDie()
    {
        // 아무것도 못함
    }

    void UpdateMoving()
    {
        Vector3 dir = _destPos - transform.position;
        if (dir.magnitude < 0.0001f)
        {
            _state = PlayerState.Idle;
        }
        else
        {
            float moveDist = Mathf.Clamp(_speed * Time.deltaTime, 0, dir.magnitude);
            transform.position += dir.normalized * moveDist;
                
            transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(dir), 20 * Time.deltaTime);
            // transform.LookAt(_destPos);
        }
        
        // 애니메이션
        Animator anim = GetComponent<Animator>();
        
        // 현재 게임 상태에 대한 정보를 넘겨준다.
        anim.SetFloat("speed", _speed);
    }

    void UpdateIdle()
    {
        
        // 애니메이션
        Animator anim = GetComponent<Animator>();
        
        anim.SetFloat("speed", 0);
    }
        
    void Update()
    {
        switch (_state)
        {
            case PlayerState.Die:
                UpdateDie();
                break;
            case PlayerState.Moving:
                UpdateMoving();
                break;
            case PlayerState.Idle:
                UpdateIdle();
                break;
        } 
    }

    // void OnKyeboard()
    // {
    //     if (Input.GetKey(KeyCode.W))
    //     {
    //         transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(Vector3.forward), 0.2f);
    //         transform.position += (Vector3.forward * Time.deltaTime * _speed);
    //     }
    //
    //     if (Input.GetKey(KeyCode.S))
    //     {
    //         transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(Vector3.back), 0.2f);
    //         transform.position += (Vector3.back * Time.deltaTime * _speed);
    //     }
    //
    //     if (Input.GetKey(KeyCode.A))
    //     {
    //         transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(Vector3.left), 0.2f);
    //         transform.position += (Vector3.left * Time.deltaTime * _speed);
    //     }
    //
    //     if (Input.GetKey(KeyCode.D))
    //     {
    //         transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(Vector3.right), 0.2f);
    //         transform.position += (Vector3.right * Time.deltaTime * _speed);
    //     }
    //
    //     _moveToDest = false;
    // }

    void OnMouseClicked(Define.MouseEvent evt)
    {
        if (_state == PlayerState.Die)
        {
            return;
        }
        
        // if (evt != Define.MouseEvent.Click)
        // {
        //     return;
        // }
        
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

        Debug.DrawRay(Camera.main.transform.position, ray.direction * 100.0f, Color.red, 1.0f);
            
        RaycastHit hit;
        if(Physics.Raycast(ray, out hit, 100.0f, LayerMask.GetMask("Wall")))
        {
            _destPos = hit.point;
            _state = PlayerState.Moving;
            // Debug.Log($"Raycast Camera @ {hit.collider.gameObject.tag}");
        }
    }
}