// index.js
Page({
  data: {
    // 轮播图配置
    indicatorDots: true,
    autoplay: true,
    interval: 5000,
    duration: 1000,
    circular: true,
    
    // 轮播图数据
    swiperList: [
      {
        id: 1,
        imageUrl: '../../imgs/guicang/haiwaiwenwu.png',
        title: '唐代三彩骆驼骑俑',
        date: '2023-06-30',
        source: '珍藏馆'
      },
      {
        id: 2,
        imageUrl: '../../imgs/guicang/haiwaiwenwu.png',
        title: '明代青花瓷器',
        date: '2023-06-29',
        source: '国家博物馆'
      },
      {
        id: 3,
        imageUrl: '../../imgs/guicang/haiwaiwenwu.png',
        title: '清代玉器',
        date: '2023-06-28',
        source: '故宫博物院'
      },
      {
        id: 4,
        imageUrl: '../../imgs/guicang/haiwaiwenwu.png',
        title: '宋代瓷器',
        date: '2023-06-27',
        source: '上海博物馆'
      }
    ],
    
    // 最新上传数据
    latestUploads: [],
    
    // 分页数据
    currentPage: 1,
    pageSize: 9,
    hasMoreData: true,
    loading: false
  },
  
  onLoad: function(options) {
    // 初始化最新上传数据
    this.loadLatestUploads();
  },
  
  // 加载最新上传数据
  loadLatestUploads: function() {
    if (!this.data.hasMoreData) return;
    
    this.setData({ loading: true });
    
    // 模拟数据加载
    setTimeout(() => {
      const newItems = this.getMockData(this.data.currentPage, this.data.pageSize);
      const hasMore = this.data.currentPage < 3; // 模拟只有3页数据
      
      this.setData({
        latestUploads: [...this.data.latestUploads, ...newItems],
        currentPage: this.data.currentPage + 1,
        hasMoreData: hasMore,
        loading: false
      });
    }, 1000);
  },
  
  // 生成模拟数据
  getMockData: function(page, pageSize) {
    const result = [];
    const startIndex = (page - 1) * pageSize;
    
    for (let i = 0; i < pageSize; i++) {
      result.push({
        id: startIndex + i + 1,
        imageUrl: '../../imgs/guicang/haiwaiwenwu.png'
      });
    }
    
    return result;
  },
  
  // 跳转到详情页
  goToDetail: function(e) {
    const id = e.currentTarget.dataset.id;
    wx.navigateTo({
      url: '../guicangDetails/index?id=' + id
    });
  },
  
  // 下拉刷新
  onPullDownRefresh: function() {
    this.setData({
      latestUploads: [],
      currentPage: 1,
      hasMoreData: true
    });
    
    this.loadLatestUploads();
    wx.stopPullDownRefresh();
  },
  
  // 上拉加载更多
  onReachBottom: function() {
    if (!this.data.loading && this.data.hasMoreData) {
      this.loadLatestUploads();
    }
  },
  
  onReady: function() {
    // 页面初次渲染完成时执行的函数
  },
  
  onShow: function() {
    // 页面显示时执行的函数
  },
  
  onHide: function() {
    // 页面隐藏时执行的函数
  },
  
  onUnload: function() {
    // 页面卸载时执行的函数
  }
})