using Core;
using UnityEngine;
using Interface;
using Script.Gameplay.Input;

namespace Gameplay.Player
{
    public class PlayerEditController:MonoBehaviour
    {
        [SerializeField] private float interactRange = 15f;
        [SerializeField] private LayerMask interactableLayer;
        [SerializeField] private Camera playerCamera;
        [SerializeField] private bool isDrawGizmos;

        private IEditable currentTarget; // 射线命中的当前可编辑对象（用于按键交互）
        private IEditable previousGazedTarget; // 上一次注视的对象（用于注视进入/离开事件）
        
        private InputManager inputManager;

        void Start()
        {
            inputManager = InputManager.Instance;
            if (playerCamera == null)
                playerCamera = GameObject.FindWithTag("MainCamera").GetComponent<Camera>();
            
            ControllerLocator.Instance.Register(this);
        }

        void Update()
        {
            DetectInteractable();
        }

        void DetectInteractable()
        {
            if (playerCamera == null) return;

            Ray ray = new Ray(playerCamera.transform.position, playerCamera.transform.forward);
            if (Physics.Raycast(ray, out RaycastHit hit, interactRange, interactableLayer))
            {
                IEditable hitEditable = hit.collider.GetComponent<IEditable>();

                // 如果命中对象与之前注视的不一样，触发进入/离开事件
                if (hitEditable != previousGazedTarget)
                {
                    if (previousGazedTarget != null)
                    {
                        previousGazedTarget.OnGazeExit(this);
                    }

                    if (hitEditable != null)
                    {
                        hitEditable.OnGazeEnter(this);
                    }

                    previousGazedTarget = hitEditable;
                }

                currentTarget = hitEditable;
            }
            else
            {
                // 没有命中时，如果之前有注视对象，触发离开
                if (previousGazedTarget != null)
                {
                    previousGazedTarget.OnGazeExit(this);
                    previousGazedTarget = null;
                }

                currentTarget = null;
            }
        }

        public IEditable GetCurrentTarget()
        {
            return currentTarget;
        }

        void OnDrawGizmos()
        {
            if(!isDrawGizmos) return;
            if (playerCamera == null) return;
            Gizmos.color = Color.red;
            Vector3 origin = playerCamera.transform.position;
            Vector3 direction = playerCamera.transform.forward * interactRange;
            Gizmos.DrawLine(origin, origin + direction);
        }
    }
}