// pages/mypoint/mypoint.js
Page({
  data: {
    studentId: '',
    name: '',
    students: [],
    scoreRanking: [],
    hasMore: true,
    page: 1,
    limit: 20
  },
  onLoad: function(options) {
    this.setData({
      studentId: decodeURIComponent(options.studentId || ''),
      name: decodeURIComponent(options.name || '')
    });
    this.fetchStudents();
  },
  fetchStudents: function() {
    const db = wx.cloud.database();
    db.collection('users')
      .orderBy('score', 'desc')
      .skip((this.data.page - 1) * this.data.limit)
      .limit(this.data.limit)
      .get()
      .then(res => {
        if (res.data.length < this.data.limit) {
          this.setData({ hasMore: false });
        }
        const newStudents = this.data.students.concat(res.data);
        this.setData({
          students: newStudents,
          scoreRanking: newStudents
        });
      })
      .catch(err => {
        console.error('数据库读取失败:', err);
      });
  },
  loadMore: function() {
    if (this.data.hasMore) {
      this.setData({ page: this.data.page + 1 }, () => {
        this.fetchStudents();
      });
    }
  },
  refreshData: function() {
    this.setData({
      students: [],
      scoreRanking: [],
      page: 1,
      hasMore: true
    }, () => {
      this.fetchStudents();
    });
  },
  goBack: function() {
    wx.navigateBack({
      delta: 1 
    });
  }
});