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pages/forum/forum.js

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+// pages/forum/forum.js
+const {forumData} = require('../../utils/data.js')
+const learningTracker = require('../../utils/learningTracker.js')
+
+Page({
+  data: {
+    posts: [],
+    categories: ['全部', '数学', '物理', '计算机', '英语', '其他'],
+    selectedCategory: '全部'
+  },
+
+  onLoad() {
+    this.loadPosts()
+  },
+
+  onShow() {
+    // 开始跟踪学习时间
+    learningTracker.onPageShow('forum')
+    
+    // 每次显示时重新加载，以获取最新发布的帖子
+    this.loadPosts()
+    
+    // 更新自定义TabBar选中状态
+    if (typeof this.getTabBar === 'function' && this.getTabBar()) {
+      this.getTabBar().setData({
+        selected: 2
+      })
+    }
+  },
+
+  onHide() {
+    // 停止跟踪学习时间
+    learningTracker.onPageHide()
+  },
+
+  onUnload() {
+    // 记录学习时长
+    learningTracker.onPageUnload()
+  },
+
+  // 加载帖子
+  loadPosts() {
+    try {
+      let posts = wx.getStorageSync('forumPosts') || forumData
+      
+      // 同步评论数量
+      const allComments = wx.getStorageSync('forumComments') || {}
+      // 获取收藏的帖子列表
+      const favoritePosts = wx.getStorageSync('favoritePosts') || []
+      
+      posts = posts.map(post => {
+        const comments = allComments[post.id] || []
+        post.comments = comments.length
+        // 检查是否已收藏
+        post.isFavorite = favoritePosts.some(fav => fav.id === post.id)
+        return post
+      })
+      
+      // 保存更新后的帖子数据
+      wx.setStorageSync('forumPosts', posts)
+      
+      // 按时间排序(最新的在前)
+      posts.sort((a, b) => b.id - a.id)
+      
+      this.setData({ posts })
+      this.filterPosts()
+    } catch (error) {
+      console.error('加载帖子失败:', error)
+      wx.showToast({
+        title: '数据加载失败',
+        icon: 'none'
+      })
+    }
+  },
+
+  // 分类筛选
+  onCategoryChange(e) {
+    const category = e.currentTarget.dataset.category
+    this.setData({ selectedCategory: category })
+    this.filterPosts()
+  },
+
+  // 筛选帖子
+  filterPosts() {
+    const { selectedCategory } = this.data
+    let allPosts = wx.getStorageSync('forumPosts') || forumData
+    
+    // 同步评论数量和收藏状态
+    const allComments = wx.getStorageSync('forumComments') || {}
+    const favoritePosts = wx.getStorageSync('favoritePosts') || []
+    
+    allPosts = allPosts.map(post => {
+      const comments = allComments[post.id] || []
+      post.comments = comments.length
+      // 检查是否已收藏
+      post.isFavorite = favoritePosts.some(fav => fav.id === post.id)
+      return post
+    })
+    
+    if (selectedCategory === '全部') {
+      this.setData({ posts: allPosts })
+    } else {
+      const filtered = allPosts.filter(post => post.category === selectedCategory)
+      this.setData({ posts: filtered })
+    }
+  },
+
+  // 查看帖子详情
+  onPostDetail(e) {
+    const { id } = e.currentTarget.dataset
+    wx.navigateTo({
+      url: `/pages/forum-detail/forum-detail?id=${id}`
+    })
+  },
+
+  // 发布新帖子
+  onNewPost() {
+    wx.navigateTo({
+      url: '/pages/post/post'
+    })
+  },
+
+  // 点赞
+  onLike(e) {
+    const { id } = e.currentTarget.dataset
+    let posts = wx.getStorageSync('forumPosts') || forumData
+    
+    posts = posts.map(post => {
+      if (post.id === id) {
+        post.isLiked = !post.isLiked
+        post.likes = post.isLiked ? post.likes + 1 : post.likes - 1
+      }
+      return post
+    })
+    
+    wx.setStorageSync('forumPosts', posts)
+    this.loadPosts()
+  },
+
+  // 预览图片
+  onPreviewImage(e) {
+    const { url, urls } = e.currentTarget.dataset
+    wx.previewImage({
+      current: url,      // 当前显示图片的链接
+      urls: urls         // 需要预览的图片链接列表
+    })
+  },
+
+  // 收藏/取消收藏
+  onFavorite(e) {
+    const { id } = e.currentTarget.dataset
+    let favoritePosts = wx.getStorageSync('favoritePosts') || []
+    let posts = wx.getStorageSync('forumPosts') || forumData
+    
+    // 找到当前帖子
+    const currentPost = posts.find(post => post.id === id)
+    if (!currentPost) return
+    
+    // 检查是否已收藏
+    const index = favoritePosts.findIndex(fav => fav.id === id)
+    
+    if (index > -1) {
+      // 已收藏，取消收藏
+      favoritePosts.splice(index, 1)
+      wx.showToast({
+        title: '取消收藏',
+        icon: 'success',
+        duration: 1500
+      })
+    } else {
+      // 未收藏，添加收藏
+      favoritePosts.push({
+        id: currentPost.id,
+        title: currentPost.title,
+        category: currentPost.category,
+        time: new Date().toLocaleString()
+      })
+      wx.showToast({
+        title: '收藏成功',
+        icon: 'success',
+        duration: 1500
+      })
+    }
+    
+    // 保存收藏列表
+    wx.setStorageSync('favoritePosts', favoritePosts)
+    
+    // 重新加载帖子列表
+    this.loadPosts()
+  }
+})