using System.Collections;
using System.Collections.Generic;
using Unity.Burst.CompilerServices;
using UnityEngine;
using UnityEngine.Rendering.HighDefinition;
using UnityEngine.UI;
using InfallibleCode;
using UnityEngine.Events;
using UnityEngine.Serialization;

public class RaycastEvent : MonoBehaviour
{
    [SerializeField] float _playerVisibleDistance = 20;
    public Camera _camera;
    public GameObject _currentHitObject;
    //[HideInInspector] public RaycastHit hit;
    LayerMask mask = -1;

    [SerializeField] EventTrigger _eventTriggerIfLookingAt;
    [SerializeField] EventTrigger _eventTriggerIfNotLookingAt;
    public bool shouldInvokeEventIfNotLookingAt;
    public bool FocusEvent;

    private bool isFocusing;

    [SerializeField] private string _eventTag;

    private void Start()
    {
        _camera = PlayerManager.GetInstance().PlayerMainCamera.GetComponent<Camera>();
        //_playerVisibleDistance = 20;

    }

    private void Update()
    {
        if (FocusEvent) //If It's a focus event (It means that the player is pressing a key to zoom the camera)
        {
            if (PlayerManager.GetInstance()._cameraMovement.IsZooming) //Player is zooming.
            {
                UpdateEvents();
                isFocusing = true;
            }
            else 
            {
                if (isFocusing)
                {
                    if (shouldInvokeEventIfNotLookingAt)
                    {
                        _eventTriggerIfNotLookingAt.Invoke();
                    }
                    isFocusing = false;
                }
            }
        }
        else 
        {
            UpdateEvents();
        }
    }

    private void UpdateEvents() 
    {
        if (isPlayerLookingAtEvent())
        {
            _eventTriggerIfLookingAt.Invoke();
        }
        else
        {
            if (isFocusing)
            {
                if (shouldInvokeEventIfNotLookingAt)
                {
                    _eventTriggerIfNotLookingAt.Invoke();
                }
            }
        }
    }

    public void IsFocusEvent() 
    {
        FocusEvent = true;
    }

    public void IsNotFocusEvent() 
    {
        FocusEvent = false;
    }

    public void ShouldInvokeEventIfNotLookingAt()
    {
        shouldInvokeEventIfNotLookingAt = true;

    }
    public void ShouldNotInvokeEventIfNotLookingAt()
    {
        shouldInvokeEventIfNotLookingAt = false;
    }

    public bool isPlayerLookingAtEvent()
    {
        Ray ray = _camera.ScreenPointToRay(Input.mousePosition);
        RaycastHit hit;

        if (Physics.Raycast(ray, out hit,_playerVisibleDistance, mask.value, QueryTriggerInteraction.Ignore)) 
        {
            Debug.DrawLine(ray.origin, hit.point, Color.red);
            _currentHitObject = hit.transform.gameObject;
            if (_currentHitObject == null) return false;
            if (_currentHitObject.tag == _eventTag)
            {
                return true;
            }
        }

        return false;
    }

}