using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using System.Linq;
using UnityEngine.Events;
public class Personnelpreparation : MonoBehaviour
{
    private Button closeBtn;
    private ScrollRect scrollView;
    private List<Transform> subObjects; // 用于存储Scroll View的Content下的子物体Transform列表
    // 定义一个事件，用于在子物体状态变化时触发重新排序
    public UnityEvent onStatusChanged;

    // Start is called before the first frame update
    void Start()
    {
        closeBtn=transform.Find("bg/top/closeBtn").GetComponent<Button>();
        closeBtn.onClick.AddListener(OnClickCloseBtn);
        scrollView=transform.Find("bg/mid/Scroll View").GetComponent<ScrollRect>();
        if (scrollView != null)
        {
            subObjects = new List<Transform>();
            UpdateSubObjectList(); // 初始化时获取并存储子物体列表

            // 为每个子物体的ItemInfo组件添加状态变化监听器
            foreach (Transform subObject in subObjects)
            {
                ItemInfo itemInfo = subObject.GetComponent<ItemInfo>();
                if (itemInfo != null)
                {
                    itemInfo.statusChanged.AddListener(OnStatusChanged);
                }
            }

            // 初始排序
            SortSubObjects();
        }
        else
        {
            Debug.LogError("未正确关联 Scroll View组件，请检查！");
        }
    
     }
    private void UpdateSubObjectList()
    {
    Transform contentTransform = scrollView.content;
    subObjects.Clear();
    // 重新遍历Content下的所有子物体，更新子物体列表
    for (int i = 0; i < contentTransform.childCount; i++)
    {
        subObjects.Add(contentTransform.GetChild(i));
    }
    }

    private void OnStatusChanged()
    {
    // 当子物体状态变化时，触发重新排序
    if (onStatusChanged != null)
    {
        onStatusChanged.Invoke();
    }
    }

    private void SortSubObjects()
    {
        //使用Linq语句进行排序
       subObjects = subObjects.OrderByDescending(sub => sub.GetComponent<ItemInfo>().status == "离线")
                          .ThenBy(sub => sub.GetComponent<ItemInfo>().status == "准备中")
                          .ThenBy(sub => sub.GetComponent<ItemInfo>().accountName)
                          .ToList();
       

        // 按照排序后的顺序重新设置子物体在Content下的顺序

        for (int i = 0; i < subObjects.Count; i++)
    {
        subObjects[i].SetParent(scrollView.content.transform);
        subObjects[i].SetSiblingIndex(i);
    }
    }

// Update is called once per frame
private void Update()
{
    // 在Update中监听事件，若触发则重新排序
    if (onStatusChanged != null && onStatusChanged.GetPersistentEventCount() > 0)
    {
        SortSubObjects();
        onStatusChanged.RemoveAllListeners(); // 排序完成后移除监听器，避免重复触发
        UpdateSubObjectList(); // 更新子物体列表，以防有新的子物体加入等情况
        foreach (Transform subObject in subObjects)
        {
            ItemInfo itemInfo = subObject.GetComponent<ItemInfo>();
            if (itemInfo != null)
            {
                itemInfo.statusChanged.AddListener(OnStatusChanged);
            }
        }
    }
}
void OnClickCloseBtn()
    {
        Game.uiManager.CloseUI("Panel");
    }
}