// pages/article-detail/article-detail.js
// 文章详情逻辑处理

const app = getApp()
const api = require('../../services/api')

Page({
  data: {
    articleId: null,
    article: null,
    commentList: [],
    commentPage: 1,
    commentPageSize: 10,
    commentHasMore: true,
    commentLoading: false,
    commentContent: '',
    replyTo: null,
    isFavorite: false,
    isLike: false,
    likeCount: 0,
    favoriteCount: 0
  },

  onLoad(options) {
    if (options.id) {
      this.setData({ articleId: options.id })
      this.loadArticleDetail()
      this.loadCommentList()
    }
  },

  onShow() {
    if (this.data.articleId) {
      api.getArticleDetail(this.data.articleId).then(res => {
        if (res.code === 200 && res.data) {
          this.setData({
            isFavorite: res.data.isFavorite || false,
            isLike: res.data.isLike || false,
            likeCount: res.data.likeCount || 0,
            favoriteCount: res.data.favoriteCount || 0
          })
        }
      })
    }
  },

  onShareAppMessage() {
    const article = this.data.article
    if (article) {
      return {
        title: article.title,
        path: `/pages/article-detail/article-detail?id=${article.id}`,
        imageUrl: article.coverImage
      }
    }
  },

  // 加载文章详情
  loadArticleDetail() {
    wx.showLoading({ title: '加载中...' })
    api.getArticleDetail(this.data.articleId).then(res => {
      wx.hideLoading()
      if (res.code === 200) {
        this.setData({
          article: res.data,
          isFavorite: res.data.isFavorite || false,
          isLike: res.data.isLike || false,
          likeCount: res.data.likeCount || 0,
          favoriteCount: res.data.favoriteCount || 0
        })
        this.addViewCount()
      } else {
        wx.showToast({ title: res.message || '加载失败', icon: 'none' })
      }
    }).catch(() => {
      wx.hideLoading()
      wx.showToast({ title: '加载失败', icon: 'none' })
    })
  },

  // 增加浏览次数
  addViewCount() {
    api.addViewCount({ articleId: this.data.articleId }).then(() => {
      const article = this.data.article
      if (article) {
        article.viewCount = (article.viewCount || 0) + 1
        this.setData({ article })
      }
    })
  },

  // 加载评论列表
  loadCommentList() {
    if (this.data.commentLoading || !this.data.commentHasMore) return

    this.setData({ commentLoading: true })

    api.getCommentList({
      articleId: this.data.articleId,
      page: this.data.commentPage,
      pageSize: this.data.commentPageSize
    }).then(res => {
      this.setData({ commentLoading: false })
      if (res.code === 200) {
        const list = res.data.list || []
        this.setData({
          commentList: this.data.commentPage === 1 ? list : this.data.commentList.concat(list),
          commentHasMore: list.length >= this.data.commentPageSize
        })
      }
    }).catch(() => {
      this.setData({ commentLoading: false })
    })
  },

  // 触底加载更多评论
  onReachBottom() {
    if (this.data.commentHasMore && !this.data.commentLoading) {
      this.setData({ commentPage: this.data.commentPage + 1 })
      this.loadCommentList()
    }
  },

  // 收藏文章
  onFavorite() {
    if (!app.checkLogin()) return

    const isFavorite = !this.data.isFavorite
    api.updateFavorite({ articleId: this.data.articleId, isFavorite }).then(res => {
      if (res.code === 200) {
        this.setData({
          isFavorite,
          favoriteCount: isFavorite ? this.data.favoriteCount + 1 : this.data.favoriteCount - 1
        })
        wx.showToast({
          title: isFavorite ? '收藏成功' : '取消收藏',
          icon: 'success'
        })
      }
    })
  },

  // 点赞文章
  onLike() {
    if (!app.checkLogin()) return

    const isLike = !this.data.isLike
    api.updateLike({ articleId: this.data.articleId, isLike }).then(res => {
      if (res.code === 200) {
        this.setData({
          isLike,
          likeCount: isLike ? this.data.likeCount + 1 : this.data.likeCount - 1
        })
      }
    })
  },

  // 输入评论
  onCommentInput(e) {
    this.setData({ commentContent: e.detail.value })
  },

  // 提交评论
  submitComment() {
    if (!app.checkLogin()) return

    const content = this.data.commentContent.trim()
    if (!content) {
      wx.showToast({ title: '请输入评论内容', icon: 'none' })
      return
    }

    api.addComment({
      articleId: this.data.articleId,
      content,
      parentId: this.data.replyTo ? this.data.replyTo.id : null
    }).then(res => {
      if (res.code === 200) {
        wx.showToast({ title: '评论成功', icon: 'success' })
        this.setData({ commentContent: '', replyTo: null })
        this.refreshCommentList()
      } else {
        wx.showToast({ title: res.message || '评论失败', icon: 'none' })
      }
    })
  },

  // 刷新评论列表
  refreshCommentList() {
    this.setData({ commentPage: 1, commentList: [], commentHasMore: true })
    this.loadCommentList()
  },

  // 回复评论
  onReply(e) {
    const comment = e.currentTarget.dataset.comment
    this.setData({ replyTo: comment })
    wx.showModal({
      title: '回复 ' + comment.nickname,
      editable: true,
      placeholderText: '请输入回复内容',
      success: res => {
        if (res.confirm && res.content) {
          api.addComment({
            articleId: this.data.articleId,
            content: res.content,
            parentId: comment.id
          }).then(res => {
            if (res.code === 200) {
              wx.showToast({ title: '回复成功', icon: 'success' })
              this.refreshCommentList()
            }
          })
        }
      }
    })
  },

  // 复制链接
  onCopyLink() {
    wx.setClipboardData({
      data: this.data.article.shareUrl || '',
      success: () => {
        wx.showToast({ title: '链接已复制', icon: 'success' })
      }
    })
  },

  // 关注作者
  onFollow() {
    if (!app.checkLogin()) return

    const article = this.data.article
    if (!article || !article.authorId) return

    api.followUser({ userId: article.authorId }).then(res => {
      if (res.code === 200) {
        wx.showToast({ title: '关注成功', icon: 'success' })
        article.isFollowing = true
        this.setData({ article })
      }
    })
  }
})

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