using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.UI;

/// <summary>
/// 检测穿透点击，是否点击了UI下方的按钮
/// </summary>
public class RaycastDetect : MonoBehaviour
{
    public UnityAction ClickAction;
    public UnityAction DefaultAction;

    void Update()
    {
        if (Input.GetMouseButtonDown(0))
        {
            // 检测点击事件
            PointerEventData pointerData = new PointerEventData(EventSystem.current)
            {
                position = Input.mousePosition
            };

            // 获取点击的UI对象
            var results = new System.Collections.Generic.List<RaycastResult>();
            EventSystem.current.RaycastAll(pointerData, results);

            if (results.Count > 0)
            {
                GameObject clickedObject = results[0].gameObject;
                if (clickedObject != this.gameObject)
                {
                    //上层有其他UI
                    return;
                }
                foreach (var result in results)
                {
                    //获取点击的按钮
                    if (result.gameObject.GetComponent<Button>() != null)
                    {
                        DefaultAction?.Invoke();
                        result.gameObject.GetComponent<Button>().OnPointerClick(pointerData);
                        return;
                    }
                }
                ClickAction?.Invoke();
                //GameObject clickedObject = results[0].gameObject;
                //if (clickedObject == mainButton.gameObject)
                //{
                //    // 点击的是主界面按钮
                //    OnMainButtonClick();
                //}
                //else if (clickedObject.transform.IsChildOf(sidebar.transform))
                //{
                //    // 点击的是侧边栏内部区域
                //    // 可以在这里处理侧边栏内部的点击事件
                //}
                //else
                //{
                //    // 点击的是非交互区域
                //    HideSidebar();
                //}
            }
            else
            {
                // 点击的是非交互区域
                //HideSidebar();
            }
        }
    }
}