using Cysharp.Threading.Tasks;

using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading;

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.InputSystem;

public class RayCastLogic : MonoBehaviour
{
    public Camera mainCamera;
    public float length = 10;
    private void Reset()
    {
        this.mainCamera = this.GetComponent<Camera>();
    }

    // Update is called once per frame
    private void Update()
    {
        var ray = mainCamera.ScreenPointToRay(Input.mousePosition);

        Debug.DrawRay(mainCamera.transform.position, ray.direction * length, Color.blue);
    }

    private void FixedUpdate()
    {
        if (Input.GetMouseButtonDown(0))
        {
            var ray = mainCamera.ScreenPointToRay(Input.mousePosition);
            var hits = Physics.RaycastAll(ray);
            Debug.Log(hits.Length);
            foreach (var item in hits)
            {
                ExecuteEvents.Execute(item.collider.gameObject, new PointerEventData(EventSystem.current), ExecuteEvents.pointerClickHandler);
            }
        }
    }

    public async UniTask WaitOnClick(GameObject target, CancellationToken cancellationToken)
    {
        while (cancellationToken.IsCancellationRequested != true)
        {
            if (Input.GetMouseButtonDown(0))
            {
                var ray = mainCamera.ScreenPointToRay(Input.mousePosition);
                var hits = Physics.RaycastAll(ray);

                foreach (var item in hits)
                {
                    if (item.collider.gameObject == target)
                    {
                        ExecuteEvents.Execute(target, new PointerEventData(EventSystem.current), ExecuteEvents.pointerClickHandler);
                    }
                }
            }
            await UniTask.Yield(cancellationToken);
        }
    }
}