const app = getApp()

Page({
  data: {
    statusBarHeight: 44,
    // 'input' → 'generating' → 'preview' → 'publishing'
    step: 'input',

    // 输入阶段
    description: '',
    images: [], // [{tempPath, url, uploading, error}]

    // 预览/编辑阶段
    title: '',
    content: '',

    genError: '',
    meNickname: '',
  },

  onLoad() {
    this.setData({
      statusBarHeight: app.globalData.statusBarHeight || 44,
      meNickname: String(app.globalData.userInfo?.nickname || '我').trim() || '我',
    })
    this._checkIdentity()
  },

  async _checkIdentity() {
    const userId = app.globalData.userInfo?.id
    if (!app.globalData.isLoggedIn || !userId) {
      wx.showToast({ title: '请先登录', icon: 'none' })
      setTimeout(() => wx.navigateBack(), 400)
      return
    }
    try {
      const res = await app.request({
        url: `/api/miniprogram/my/super-stats?userId=${encodeURIComponent(userId)}`,
        silent: true,
      })
      if (!(res?.success && res.data?.isSuperIndividual === true)) {
        wx.showToast({ title: '仅超级个体可发文章', icon: 'none' })
        setTimeout(() => wx.navigateBack(), 400)
      }
    } catch (_) {
      wx.showToast({ title: '身份校验失败', icon: 'none' })
      setTimeout(() => wx.navigateBack(), 400)
    }
  },

  // ─────────────── 图片管理 ───────────────

  chooseImages() {
    const remain = 3 - this.data.images.length
    if (remain <= 0) return
    wx.chooseMedia({
      count: remain,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      success: (res) => {
        const newImgs = res.tempFiles.map((f) => ({
          tempPath: f.tempFilePath,
          url: '',
          uploading: true,
          error: false,
        }))
        const images = [...this.data.images, ...newImgs]
        this.setData({ images })
        // 并发上传
        newImgs.forEach((img, offset) => {
          const idx = this.data.images.length - newImgs.length + offset
          this._uploadImage(img.tempPath, idx)
        })
      },
    })
  },

  async _uploadImage(tempPath, idx) {
    const baseUrl = app.globalData.baseUrl || ''
    const token = wx.getStorageSync('token') || ''
    return new Promise((resolve) => {
      wx.uploadFile({
        url: `${baseUrl}/api/upload`,
        filePath: tempPath,
        name: 'file',
        formData: { folder: 'article-images' },
        header: token ? { Authorization: `Bearer ${token}` } : {},
        success: (res) => {
          try {
            const parsed = JSON.parse(res.data)
            if (parsed.success && parsed.url) {
              this._updateImage(idx, { url: parsed.url, uploading: false, error: false })
              resolve(parsed.url)
              return
            }
          } catch (_) { /* ignore */ }
          this._updateImage(idx, { uploading: false, error: true })
          resolve('')
        },
        fail: () => {
          this._updateImage(idx, { uploading: false, error: true })
          resolve('')
        },
      })
    })
  },

  _updateImage(idx, patch) {
    const images = [...this.data.images]
    if (images[idx]) {
      images[idx] = { ...images[idx], ...patch }
      this.setData({ images })
    }
  },

  removeImage(e) {
    const idx = Number(e.currentTarget.dataset.index)
    const images = this.data.images.filter((_, i) => i !== idx)
    this.setData({ images })
  },

  // ─────────────── 输入 ───────────────

  onDescInput(e) {
    this.setData({ description: e.detail.value || '' })
  },

  onTitleInput(e) {
    this.setData({ title: e.detail.value || '' })
  },

  onContentInput(e) {
    this.setData({ content: e.detail.value || '' })
  },

  // ─────────────── AI 生成 ───────────────

  async generateArticle() {
    if (this.data.step === 'generating') return
    const desc = String(this.data.description || '').trim()
    if (!desc) {
      wx.showToast({ title: '请先填写描述', icon: 'none' })
      return
    }

    // 等待所有图片上传完成
    const stillUploading = this.data.images.some((img) => img.uploading)
    if (stillUploading) {
      wx.showToast({ title: '图片上传中，请稍候', icon: 'none' })
      return
    }

    const imageUrls = this.data.images.filter((img) => img.url).map((img) => img.url)
    const userId = app.globalData.userInfo?.id || ''

    this.setData({ step: 'generating', genError: '' })

    try {
      const res = await app.request({
        url: '/api/miniprogram/super/articles/generate',
        method: 'POST',
        data: { userId, description: desc, imageUrls },
        timeout: 90000,
      })
      if (!res?.success) throw new Error(res?.error || 'AI 生成失败')
      this.setData({
        step: 'preview',
        title: String(res.data?.title || '').trim(),
        content: String(res.data?.content || '').trim(),
      })
    } catch (err) {
      this.setData({ step: 'input', genError: err.message || 'AI 生成失败，请重试' })
      wx.showToast({ title: this.data.genError, icon: 'none', duration: 2500 })
    }
  },

  backToInput() {
    this.setData({ step: 'input', genError: '' })
  },

  // ─────────────── 发布 ───────────────

  async submitArticle() {
    if (this.data.step === 'publishing') return
    const userId = app.globalData.userInfo?.id
    const title = String(this.data.title || '').trim()
    const content = String(this.data.content || '').trim()
    if (!title || !content) {
      wx.showToast({ title: '标题和正文不能为空', icon: 'none' })
      return
    }
    this.setData({ step: 'publishing' })
    try {
      const res = await app.request({
        url: '/api/miniprogram/super/articles',
        method: 'POST',
        data: { userId, title, content },
      })
      if (!res?.success) throw new Error(res?.error || '发布失败')
      wx.showToast({ title: '发布成功', icon: 'success' })
      setTimeout(() => wx.navigateBack(), 400)
    } catch (e) {
      wx.showToast({ title: e.message || '发布失败', icon: 'none' })
      this.setData({ step: 'preview' })
    }
  },

  goBack() {
    wx.navigateBack({ fail: () => wx.switchTab({ url: '/pages/my/my' }) })
  },

  // ─────────────── 手动添加 @自己 / #链接 ───────────────

  insertMentionSelf() {
    const nick = this.data.meNickname || '我'
    this.setData({ content: `${this.data.content}@${nick} ` })
  },

  insertHashLink() {
    this.setData({ content: `${this.data.content}#链接(https://)` })
  },
})