using System;
using Animation;
using UnityEngine;
using UnityEngine.InputSystem;

public class PlayerController : MonoBehaviour
{
    private AnimatorManager<AnimatorParam> _mAnimator;
    private Vector3 _destPos;
    
    private Status_Player _status;
    
    enum AnimatorParam
    {
        speed,
        atk_speed,
        attack,
        run,
    }
    
    enum PlayerBehavior
    {
        Idle,
        Move,
        Attack,
        Die
    }

    private PlayerBehavior _behavior = PlayerBehavior.Idle;
    private PlayerBehavior Behavior
    {
        get { return _behavior; }
        set
        {
            _behavior = value;
            switch (_behavior)
            {
                case PlayerBehavior.Die:
                    _mAnimator.SetValue(AnimatorParam.attack, false);
                    break;
                case PlayerBehavior.Idle:
                    _mAnimator.SetValue(AnimatorParam.speed, 0);
                    _mAnimator.SetValue(AnimatorParam.attack, false);
                    break;
                case PlayerBehavior.Move:
                    _mAnimator.SetValue(AnimatorParam.speed, _status.MoveSpeed);
                    _mAnimator.SetValue(AnimatorParam.attack, false);
                    break;
                case PlayerBehavior.Attack:
                    _mAnimator.SetValue(AnimatorParam.attack, true);
                    break;
                    
            }
        }
    }

    private void Awake()
    {
        _mAnimator = new AnimatorManager<AnimatorParam>(GetComponent<Animator>());
        _status = gameObject.GetComponent<Status_Player>();
    }

    void Start()
    {
        Manager.Input.MouseAction -= OnMouseClicked;
        Manager.Input.MouseAction += OnMouseClicked;
        
        SetAnimator();
    }

    void SetAnimator()
    {
        _mAnimator.SetValue(AnimatorParam.atk_speed,_status.AtkSpeed);
    }

    void Update()
    {
        switch (_behavior)
        {
            case PlayerBehavior.Idle:
                UpdateIdle();
                break;
            case PlayerBehavior.Move:
                UpdateMove();
                break;
            case PlayerBehavior.Attack:
                break;
            case PlayerBehavior.Die:
                break;
        }
    }

    void OnMouseClicked(Define.MouseEvent evt)
    {
        if (Behavior == PlayerBehavior.Die) return;

        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay((Vector3)Mouse.current.position.ReadValue());
        bool raycastHit = Physics.Raycast(ray, out hit, 100.0f, LayerMask.GetMask("Ground"));

        // --- 디버그 시각화 ---
        // if (raycastHit)
        // {
        //     // 레이캐스트 성공 시: 부딪힌 곳까지 빨간 선 표시
        //     Debug.DrawRay(ray.origin, ray.direction * hit.distance, Color.red, 1.0f);
        //
        //     // 마우스를 처음 눌렀을 때만 디버그용 구 생성
        //     if (evt == Define.MouseEvent.Down)
        //     {
        //         GameObject debugSphere = GameObject.CreatePrimitive(PrimitiveType.Sphere);
        //         debugSphere.transform.position = hit.point;
        //         debugSphere.transform.localScale = Vector3.one * 0.5f;
        //         debugSphere.GetComponent<Collider>().enabled = false;
        //         GameObject.Destroy(debugSphere, 3.0f);
        //     }
        // }
        // else
        // {
        //     // 레이캐스트 실패 시: 긴 노란 선 표시
        //     Debug.DrawRay(ray.origin, ray.direction * 100.0f, Color.yellow, 1.0f);
        // }
        // --- 디버그 시각화 끝 ---

        // 레이캐스트가 아무것도 맞추지 못했다면, 이후 로직을 실행하지 않음
        if (!raycastHit) return;

        // --- 실제 게임 로직 ---
        switch (evt)
        {
            case Define.MouseEvent.Click:
            case Define.MouseEvent.Down:
                _destPos = hit.point;
                Behavior = PlayerBehavior.Move;
                break;
            case Define.MouseEvent.Press:
                _destPos = hit.point;
                break;
        }
    }

    void UpdateIdle()
    {
        
    }
    void UpdateMove()
    {
        
        Vector3 dir = _destPos - transform.position;
        
        if (dir.magnitude < 0.1f) Behavior = PlayerBehavior.Idle;
        
        else
        {
            float moveDist = Mathf.Clamp(_status.MoveSpeed * Time.deltaTime, 0, dir.magnitude);
            transform.position += dir.normalized * moveDist;

            Vector3 targetDir = new Vector3(dir.x, 0, dir.z).normalized;
            if(targetDir != Vector3.zero)
                transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(targetDir), 0.15f);
            
        }
    }
    
    void UpdateAttack()
    {
        
    }
}