import { api } from '../../utils/api'
import { formatTime, getAvatarGradient } from '../../utils/format'
import { AppGlobalData } from '../../types/index'

const app = getApp<{ globalData: AppGlobalData }>()

function normalizeAuthor(author: any, authorId = '') {
  return {
    ...(author || {}),
    nickName: author?.nickName || '匿名用户',
    avatarUrl: author?.avatarUrl || '',
    openid: author?.openid || authorId,
  }
}

function normalizePost(post: any) {
  return {
    authorId: '',
    ...(post || {}),
    author: normalizeAuthor(post?.author, post?.authorId),
    content: post?.content || '',
    images: Array.isArray(post?.images) ? post.images : [],
    hashtags: Array.isArray(post?.hashtags) ? post.hashtags : [],
    likeCount: typeof post?.likeCount === 'number' ? post.likeCount : 0,
    commentCount: typeof post?.commentCount === 'number' ? post.commentCount : 0,
    createdAt: post?.createdAt || '',
  }
}

function normalizeComment(comment: any) {
  return {
    authorId: '',
    ...(comment || {}),
    author: normalizeAuthor(comment?.author, comment?.authorId),
    content: comment?.content || '',
    createdAt: comment?.createdAt || '',
    gradient: getAvatarGradient(comment?.authorId || ''),
    timeText: comment?.createdAt ? formatTime(comment.createdAt) : '',
  }
}

Page({
  data: {
    statusBarHeight: 0,
    postId: '',
    post: null as any,
    comments: [] as any[],
    avatarGradient: '',
    timeText: '',
    likeCount: 0,
    commentText: '',
    focusInput: false,
    pendingFocusComment: false,
  },

  onLoad(query: { id?: string; focus?: string }) {
    const info = wx.getSystemInfoSync()
    this.setData({
      statusBarHeight: info.statusBarHeight,
      postId: query.id || '',
      pendingFocusComment: query.focus === 'comment',
    })
    this.loadPost(query.id || '')
  },

  async loadPost(id: string) {
    if (!id) return
    try {
      const res = await wx.cloud.callFunction({
        name: 'getPost',
        data: { postId: id },
      }) as any
      const post = normalizePost(res.result?.data)
      if (!post?._id) return
      this.setData({
        post,
        avatarGradient: getAvatarGradient(post.authorId || ''),
        timeText: post.createdAt ? formatTime(post.createdAt) : '',
        likeCount: post.likeCount,
      })
      if (this.data.pendingFocusComment) {
        wx.nextTick(() => {
          this.setData({ focusInput: true, pendingFocusComment: false })
        })
      }
      this.loadComments(id)
    } catch {}
  },

  async loadComments(postId: string) {
    try {
      const res = await api.getComments(postId)
      const comments = res.list.map(normalizeComment)
      this.setData({ comments })
    } catch {}
  },

  async onLike() {
    const post = this.data.post
    if (!post) return
    const was = post.isLiked
    this.setData({ 'post.isLiked': !was, likeCount: was ? this.data.likeCount - 1 : this.data.likeCount + 1 })
    try {
      const res = await api.likePost(post._id)
      this.setData({ likeCount: res.count, 'post.isLiked': res.liked })
    } catch {
      this.setData({ 'post.isLiked': was, likeCount: post.likeCount })
    }
  },

  onCommentInput(e: WechatMiniprogram.CustomEvent) {
    this.setData({ commentText: e.detail.value })
  },

  onCommentBlur() {
    this.setData({ focusInput: false })
  },

  async onSend() {
    const text = this.data.commentText.trim()
    if (!text || !this.data.postId) return
    this.setData({ commentText: '' })
    try {
      await api.addComment(this.data.postId, text)
      const comments = await api.getComments(this.data.postId)
      this.setData({
        comments: comments.list.map(normalizeComment),
      })
    } catch {
      wx.showToast({ title: '发送失败', icon: 'none' })
    }
  },

  focusComment() {
    this.setData({ focusInput: true })
  },

  onAuthorTap() {
    const post = this.data.post
    if (post?.authorId) wx.navigateTo({ url: `/pages/pet-detail/pet-detail?userId=${post.authorId}` })
  },

  onImgTap(e: WechatMiniprogram.CustomEvent) {
    const post = this.data.post
    wx.previewImage({ current: post.images[e.currentTarget.dataset.idx], urls: post.images })
  },

  onMore() {
    wx.showActionSheet({
      itemList: ['举报'],
      success: () => wx.showToast({ title: '已提交举报', icon: 'success' }),
    })
  },

  onBack() { wx.navigateBack() },
})