using UnityEngine;
using UnityEngine.UI;
 
public class Pagination : MonoBehaviour
{
    public int totalPages; // 总页数
    public int currentPage; // 总页数
    public int visiblePages; // 可见页码数量
    public Button firstPageButton;
    public Button previousPageButton;
    public Button nextPageButton;
    public Button lastPageButton;
    public GameObject pageButtonPrefab;
    public Transform pageButtonsContainer;
 
    void Start()
   
    {
        UpdatePagination();
    }
 
    public void GoToPage(int page)
    {
        // 分页逻辑...
    }
 
    public void UpdatePagination()
    {
        int startPage = 1;
        int endPage = totalPages;
 
        if (totalPages > visiblePages)
        {
            startPage = Mathf.Max(1, currentPage - visiblePages / 2);
            endPage = Mathf.Min(totalPages, startPage + visiblePages - 1);
 
            if (endPage - startPage < visiblePages - 1)
            {
                startPage = endPage - visiblePages + 1;
            }
 
            if (startPage > 1)
            {
                firstPageButton.interactable = true;
                previousPageButton.interactable = true;
            }
            else
            {
                firstPageButton.interactable = false;
                previousPageButton.interactable = false;
            }
 
            if (endPage < totalPages)
            {
                lastPageButton.interactable = true;
                nextPageButton.interactable = true;
            }
            else
            {
                lastPageButton.interactable = false;
                nextPageButton.interactable = false;
            }
 
            if (startPage > 3)
            {
                pageButtonsContainer.GetChild(0).GetComponent<Text>().text = "1";
                pageButtonsContainer.GetChild(1).GetComponent<Text>().text = "...";
            }
            if (endPage < totalPages - 1)
            {
                pageButtonsContainer.GetChild(pageButtonsContainer.childCount - 1).GetComponent<Text>().text = totalPages.ToString();
                pageButtonsContainer.GetChild(pageButtonsContainer.childCount - 2).GetComponent<Text>().text = "...";
            }
        }
 
        // 清除旧的页码按钮
        for (int i = 0; i < pageButtonsContainer.childCount; )
        {
            Destroy(pageButtonsContainer.GetChild(i).gameObject);
        }
 
        // 创建新的页码按钮
        for (int i = startPage; i <= endPage; i++)
        {
            Button pageButton = Instantiate(pageButtonPrefab, pageButtonsContainer).GetComponent<Button>();
            pageButton.GetComponent<Text>().text = i.ToString();
            pageButton.onClick.AddListener(() => GoToPage(i));
        }
    }
}