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

public class OnclickRemains : MonoBehaviour, IPointerDownHandler
{
    private Vector3 offset;
    private float Zpos = -9f; // 控制物体的 z 轴位置
    private delegate void Style();
    private Style style;
    //public float rayDistance = 2f; // 射线的最大距离
    public Vector3 boxSize = new Vector3(1f, 1f, 1f); // 盒子的尺寸
    public float detectionDistance = 2f;              // 盒子检测的距离

    private static bool OpenRepeat = false;//打开重复点击
    private static WaitForSeconds t = new WaitForSeconds(1);
    private static List<OnclickRemains> Remains;
    public List<float> distances;
    private int CurrentScreen;//当前所在场景index

    private Coroutine coroutine;
    private void OnEnable()
    {
        if (Remains == null)
        {
            Remains = new List<OnclickRemains>();
        }
        Remains.Add(this);
        style = Move;
        StartOpen(true);

        if (SceneTransitionManager.Instance.CurrentTrackingPointIndex < 3)
        {
            Zpos = distances[SceneTransitionManager.Instance.CurrentTrackingPointIndex];
            CurrentScreen = SceneTransitionManager.Instance.CurrentTrackingPointIndex;
            SpriteRenderer spriteRenderer = GetComponent<SpriteRenderer>();
            switch (CurrentScreen)
            {
                case 0:
                    spriteRenderer.sortingLayerName = "Slime";
                    spriteRenderer.sortingOrder = 1200;
                    break;
                case 1:
                    spriteRenderer.sortingLayerName = "伐木场";
                    spriteRenderer.sortingOrder = 30;
                    break;
                case 2:
                    spriteRenderer.sortingLayerName = "日神";
                    spriteRenderer.sortingOrder = 5;
                    break;
                default:
                    break;
            }
        }

    }
    private void OnDestroy()
    {
        if (coroutine != null)
        {
            StopCoroutine(coroutine);
        }
        Remains.Remove(this);
    }
    private void Update()
    {

        style?.Invoke();
    }


    public static void OpenClickRepeat()
    {
        OpenRepeat = true;
        if (Remains != null)
        {
            for (int i = 0; i < Remains.Count; i++)
            {
                Remains[i].StartOpen(true);
            }
        }
    }
    public void StartOpen(bool open)
    {
        if (open)
        {
            if (coroutine == null && OpenRepeat)
            {
                Debug.LogWarning("开启了");
                coroutine = StartCoroutine(RepeaetClick());
            }
        }
        else
        {
            if (coroutine != null)
            {
                StopCoroutine(coroutine);
                coroutine = null;
            }
        }


    }
    IEnumerator RepeaetClick()
    {
        while (true)
        {
            ClickEvent();
            yield return t;
        }
    }

    private void Move()
    {
        // 获取当前鼠标的位置并转换为世界坐标，保持物体的 Zpos
        Vector3 mousePosition = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, Camera.main.WorldToScreenPoint(transform.position).z));
        // 更新物体位置为鼠标位置加上偏移量，确保 Z 轴不变
        transform.position = new Vector3(mousePosition.x + offset.x, mousePosition.y + offset.y, Zpos);
        Debug.LogWarning("---" + transform.position);
        if (Input.GetMouseButtonUp(0) || SceneTransitionManager.Instance.CurrentTrackingPointIndex != CurrentScreen)
        {
            StartOpen(true);
            style = OnclickEvent;
        }
    }
    private void OnclickEvent()
    {
        if (Input.GetMouseButtonDown(0))
        {
            Debug.LogWarning("鼠标左键点击");
            ClickEvent();
        }

    }
    private void ClickEvent()
    {
        // 盒子的中心点位于物体自身的位置，并在物体的前方一定距离处
        Vector3 boxCenter = transform.position + transform.forward * detectionDistance;

        // 绘制可视化线条用于调试（代替 Gizmos 绘制）
        Debug.DrawLine(transform.position, boxCenter, Color.green, 2.0f); // 画一条线指向检测位置

        // 获取在盒子范围内的所有碰撞体
        Collider[] hitColliders = Physics.OverlapBox(boxCenter, boxSize / 2, transform.rotation);

        // 遍历所有碰撞体
        foreach (Collider hitCollider in hitColliders)
        {
            Debug.Log("Hit object: " + hitCollider.gameObject.name);
            GameObject obj = hitCollider.gameObject;

            // 检查物体是否实现了 IPointerDownHandler 接口
            if (obj.name != name && obj.TryGetComponent(out IPointerDownHandler pointerDown))
            {
                // 创建 PointerEventData 并传递点击事件
                PointerEventData pointerEventData = new PointerEventData(EventSystem.current)
                {
                    position = Vector2.one // 可根据需要设置点击位置
                };

                Debug.LogWarning("开启了点击事件");
                pointerDown.OnPointerDown(pointerEventData);
            }
        }
    }


    // 绘制盒子用于调试
    private void OnDrawGizmos()
    {
        // 在编辑器中显示盒子的检测区域
        Vector3 boxCenter = transform.position + transform.forward * detectionDistance;
        Gizmos.color = Color.red;
        Gizmos.DrawWireCube(boxCenter, boxSize);
    }
    // 当鼠标点击时触发
    public void OnPointerDown(PointerEventData eventData)
    {
        StartOpen(false);
        style = Move;
        // 获取鼠标点击位置并将其转换为世界坐标，保持物体的 Zpos
        Vector3 mousePosition = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, Camera.main.WorldToScreenPoint(transform.position).z));

        // 计算物体位置与鼠标位置的偏移量
        offset = transform.position - mousePosition;
    }
}