using System;
using NBC;
using RootMotion.FinalIK;
using UnityEngine;

namespace NBF
{
    public class FPlayerMainSync : MonoBehaviour
    {
        public FirstPersonController firstPersonController;

        [HideInInspector] public int nextShowSlotIndex = -1;


        private float walkingSpeed = 1f;

        private float runningSpeed = 2f;

        private FPlayer _player;


        private bool _isRun;


        public LookAtIK lookAtIK; // 挂在背部上的 LookAtIK 脚本
        public float aimDistance = 1.5f; // 目标点离相机多远

        private Transform lookTarget; // 实际目标点
        [Header("限制角度（单位：度）")] public float maxUpAngle = 20f; // 相机抬头最多20°
        public float maxDownAngle = 40f; // 相机低头最多40°

        public LayerMask interactableLayer;


        private void Start()
        {
            firstPersonController = GetComponent<FirstPersonController>();
            walkingSpeed = firstPersonController.m_WalkSpeed;
            runningSpeed = firstPersonController.m_RunSpeed;
            _player = GetComponent<FPlayer>();


            transform.position = _player.Data.position;
            transform.rotation = _player.Data.rotation;


            Timer.Once(1f, this, EnableFirstPersonController);

            // App.Inst.SetMouseCurrsor(false);

            // InputManager.OnQuickIndexAction += OnQuickIndexAction;
            // InputManager.OnUseTorchAction += OnUseTorchAction;
            // InputManager.OnUseTelescopeAction += OnUseTelescopeAction;

            InputManager.OnPlayerCanceled += OnPlayerCanceled;
            InputManager.OnPlayerPerformed += OnPlayerPerformed;

            lookAtIK = GetComponent<LookAtIK>();
            lookTarget = new GameObject("SpineLookTarget").transform;
            lookTarget.SetParent(_player.transform);
            interactableLayer = LayerMask.GetMask("Interactive");
        }

        private void OnDestroy()
        {
            InputManager.OnPlayerCanceled -= OnPlayerCanceled;
            InputManager.OnPlayerPerformed -= OnPlayerPerformed;
            // InputManager.OnQuickIndexAction -= OnQuickIndexAction;
            // InputManager.OnUseTorchAction -= OnUseTorchAction;
            // InputManager.OnUseTelescopeAction -= OnUseTelescopeAction;
        }

        private void OnPlayerPerformed(string action)
        {
            if (action == "Run")
            {
                // Sprint();
                _isRun = true;
            }
        }

        private void OnPlayerCanceled(string action)
        {
            if (action == "Run")
            {
                _isRun = false;
                // StopSprinting();
            }
            else if (action.StartsWith("Quick"))
            {
                nextShowSlotIndex = int.Parse(action.Substring("Quick".Length));
            }
            else if (action == "UseTorch")
            {
                _player.Data.openLight = !_player.Data.openLight;
            }
            else if (action == "UseTelescope")
            {
                _player.Data.openTelescope = !_player.Data.openTelescope;
                _player.ToggleTelescope();
            }
        }

        private void EnableFirstPersonController()
        {
            firstPersonController.enabled = true;
        }

        private void Update()
        {
            var movementAxis = InputManager.GetMovementInput();
            if (movementAxis != Vector2.zero)
            {
                // Debug
            }

            firstPersonController.horizontal = movementAxis.x;
            firstPersonController.vertical = movementAxis.y;

            // firstPersonController.isJumping = InputManager.IsJumping;
            firstPersonController.isRuning = _isRun;

            // firstPersonController.m_MouseLook.ControllerHandMode = GameManager.Instance._playerData
            //     .Player[GameManager.Instance._playerData.currentPlayerProfileIndex].controllerSetup;


            if (firstPersonController.isWater)
            {
                firstPersonController.m_WalkSpeed = walkingSpeed - Mathf.Abs(transform.position.y - 1f);
                firstPersonController.m_RunSpeed = firstPersonController.m_WalkSpeed;
                firstPersonController.m_WalkSpeed = Mathf.Clamp(firstPersonController.m_WalkSpeed, 0.7f, 2f);
                firstPersonController.m_RunSpeed = Mathf.Clamp(firstPersonController.m_RunSpeed, 0.8f, 2f);
            }
            else
            {
                firstPersonController.m_WalkSpeed = walkingSpeed;
                firstPersonController.m_RunSpeed = runningSpeed;
            }


            if (_player.CanChangeGear())
            {
                if (nextShowSlotIndex > 0)
                {
                    Debug.LogError("切换钓组=========");
                    var data = Fishing.Inst.Datasource;
                    data.SetSelfTestGear(nextShowSlotIndex);
                    nextShowSlotIndex = -1;
                }
            }
            
            UpdatePlayerHandView();
        }

        
        private void FixedUpdate()
        {
            if (_player.MainArm)
            {
                // _player.MainArm.Shoulder.SetCameraEulerAngleX(BaseCamera.Main.transform.localEulerAngles.x);
            }
        }


        #region 肩膀控制

        private void UpdatePlayerHandView()
        {
            var cameraTransform = BaseCamera.Main.transform;
            Vector3 cameraForward = cameraTransform.forward;
            Vector3 flatForward = Vector3.ProjectOnPlane(cameraForward, Vector3.up).normalized;

            // 获取相机 pitch 角度（负值是上看，正值是下看）
            float pitchAngle = Vector3.SignedAngle(flatForward, cameraForward, cameraTransform.right);

            // 限制 pitch 角度
            pitchAngle = Mathf.Clamp(pitchAngle, -maxUpAngle, maxDownAngle);

            // 重新构造限制后的目标方向
            Quaternion limitedPitch = Quaternion.AngleAxis(pitchAngle, cameraTransform.right);
            Vector3 limitedDirection = limitedPitch * flatForward;

            // 设置目标点
            lookTarget.position = cameraTransform.position + limitedDirection * aimDistance;
            lookAtIK.solver.target = lookTarget;
        }

        #endregion
    }
}