const API = require('../../utils/api.js');

Page({
  data: {
    hotTopics: [],
    posts: [],
    loading: false,
    hasMore: true,
    page: 1,
    pageSize: 10
  },

  onLoad() {
    this.loadHotTopics();
    this.loadPosts();
  },

  onShow() {
    this.setData({
      page: 1,
      hasMore: true,
      posts: []
    });
    this.loadPosts();
  },

  onReachBottom() {
    if (this.data.hasMore && !this.data.loading) {
      this.loadPosts();
    }
  },

  onPullDownRefresh() {
    this.setData({
      page: 1,
      hasMore: true,
      posts: []
    });
    this.loadHotTopics();
    this.loadPosts();
    wx.stopPullDownRefresh();
  },

  loadHotTopics() {
    API.getHotTopics().then(res => {
      this.setData({
        hotTopics: res.data || []
      });
    }).catch(err => {
      console.error('加载热门话题失败:', err);
    });
  },

  loadPosts() {
    if (this.data.loading) {
      return;
    }

    this.setData({
      loading: true
    });

    API.getPosts({
      page: this.data.page,
      pageSize: this.data.pageSize
    }).then(res => {
      const newPosts = res.data || [];
      this.setData({
        posts: this.data.page === 1 ? newPosts : [...this.data.posts, ...newPosts],
        loading: false,
        hasMore: newPosts.length >= this.data.pageSize,
        page: this.data.page + 1
      });
    }).catch(err => {
      console.error('加载动态失败:', err);
      this.setData({
        loading: false
      });
    });
  },

  viewTopic(e) {
    const topic = e.currentTarget.dataset.topic;
    wx.navigateTo({
      url: `/pages/eggbar/topic-detail?id=${topic.id}`
    });
  },

  viewPost(e) {
    const post = e.currentTarget.dataset.post;
    wx.navigateTo({
      url: `/pages/eggbar/post-detail?id=${post.id}`
    });
  },

  likePost(e) {
    const postId = e.currentTarget.dataset.id;
    const posts = this.data.posts.map(post => {
      if (post.id === postId) {
        return {
          ...post,
          liked: !post.liked,
          likes: post.liked ? post.likes - 1 : post.likes + 1
        };
      }
      return post;
    });

    this.setData({ posts });

    API.likePost(postId).then(res => {
      console.log('点赞成功');
    }).catch(err => {
      console.error('点赞失败:', err);
    });
  },

  commentPost(e) {
    const postId = e.currentTarget.dataset.id;
    wx.navigateTo({
      url: `/pages/eggbar/post-detail?id=${postId}&focusComment=true`
    });
  },

  sharePost(e) {
    const postId = e.currentTarget.dataset.id;
    wx.showShareMenu({
      withShareTicket: true,
      success: () => {
        console.log('分享成功');
      }
    });
  },

  createPost() {
    wx.navigateTo({
      url: '/pages/eggbar/create-post'
    });
  },

  onShareAppMessage() {
    return {
      title: '蛋吧 - 鸡蛋行业交流社区',
      path: '/pages/eggbar/eggbar',
      imageUrl: '/images/eggbar-share.jpg'
    };
  }
});