Page({
  data: {
    currentCategory: 'all',
    goodsList: [],
    pageNum: 1,
    pageSize: 10,
    hasMoreGoods: true,
    isLoading: false
  },

  onLoad: function (options) {
    console.log('二手超市页面加载');
    this.loadGoodsList(true);
  },

  onPullDownRefresh: function () {
    console.log('下拉刷新');
    this.setData({
      pageNum: 1,
      hasMoreGoods: true
    });
    this.loadGoodsList(true);
  },

  switchCategory: function (e) {
    const category = e.currentTarget.dataset.category;
    console.log('切换分类:', category);
    this.setData({
      currentCategory: category,
      pageNum: 1,
      goodsList: [],
      hasMoreGoods: true
    });
    this.loadGoodsList(true);
  },

  searchGoods: function (e) {
    const keyword = e.detail.value;
    if (!keyword.trim()) {
      return;
    }
    
    console.log('搜索商品:', keyword);
    this.setData({
      pageNum: 1,
      goodsList: [],
      hasMoreGoods: true
    });
    
    this.loadGoodsList(true, keyword);
  },

  loadGoodsList: function (refresh, keyword) {
    refresh = refresh || false;
    keyword = keyword || '';
    
    console.log('加载商品列表, 刷新:', refresh, '关键词:', keyword);
    
    // 模拟商品数据
    const mockGoods = [
      {
        id: 1,
        title: 'iPad Pro 2021 二手95新',
        price: 4500,
        condition: '95新',
        images: ['/images/ipad.jpg'],
        publishTime: '3小时前',
        category: 'electronics'
      },
      {
        id: 2,
        title: '微积分教材 同济第七版',
        price: 20,
        condition: '8成新',
        images: ['/images/book.jpg'],
        publishTime: '1天前',
        category: 'books'
      },
      {
        id: 3,
        title: '耐克运动鞋 Air Max 270',
        price: 350,
        condition: '9成新',
        images: ['/images/shoes.jpg'],
        publishTime: '2天前',
        category: 'clothes'
      },
      {
        id: 4,
        title: '宿舍小桌子 可折叠',
        price: 50,
        condition: '全新',
        images: ['/images/table.jpg'],
        publishTime: '3天前',
        category: 'daily'
      },
      {
        id: 5,
        title: '自行车 捷安特 ATX',
        price: 800,
        condition: '8成新',
        images: ['/images/bike.jpg'],
        publishTime: '5天前',
        category: 'others'
      },
      {
        id: 6,
        title: 'AirPods Pro 无线耳机',
        price: 850,
        condition: '9成新',
        images: ['/images/airpods.jpg'],
        publishTime: '1周前',
        category: 'electronics'
      }
    ];

    // 根据分类和关键词筛选商品
    var filteredGoods = mockGoods;
    var self = this;
    
    if (this.data.currentCategory !== 'all') {
      filteredGoods = mockGoods.filter(function(item) {
        return item.category === self.data.currentCategory;
      });
    }
    
    if (keyword) {
      filteredGoods = filteredGoods.filter(function(item) {
        return item.title.toLowerCase().indexOf(keyword.toLowerCase()) !== -1;
      });
    }

    // 模拟分页
    var start = (this.data.pageNum - 1) * this.data.pageSize;
    var end = start + this.data.pageSize;
    var pageGoods = filteredGoods.slice(start, end);
    
    // 更新数据
    if (refresh) {
      this.setData({
        goodsList: pageGoods,
        hasMoreGoods: pageGoods.length === this.data.pageSize,
        pageNum: this.data.pageNum + 1
      });
      wx.stopPullDownRefresh();
    } else {
      this.setData({
        goodsList: this.data.goodsList.concat(pageGoods),
        hasMoreGoods: pageGoods.length === this.data.pageSize,
        pageNum: this.data.pageNum + 1
      });
    }
  },

  loadMore: function () {
    console.log('加载更多商品');
    if (this.data.hasMoreGoods) {
      this.loadGoodsList();
    }
  },

  navigateToDetail: function (e) {
    var goodsId = e.currentTarget.dataset.id;
    wx.navigateTo({
      url: '/pages/secondhand/detail?id=' + goodsId
    });
  },

  navigateToPublish: function () {
    wx.navigateTo({
      url: '/pages/secondhand/publish'
    });
  },

  // 处理图片加载错误
  handleImageError: function() {
    console.log('图片加载错误处理已注册');
  }
})