const app = getApp()

Page({
  data: {
    timeRanges: ['今日', '本周', '本月', '自定义区间'],
    activeTimeRange: 0,
    contentTypes: ['单词', '句子'],
    activeContentType: 0,
    modes: ['中文 -> 英文拼写', '英文 -> 中文释义', '英文挖空填空'],
    activeMode: 0,
    onlyReview: true,
    shuffle: false,
    questionCount: 30,
    loading: false,
    error: '',
  },
  onLoad() {
    const plan = app.globalData.reviewPlan
    this.setData({
      activeTimeRange: plan.timeRangeIndex,
      activeContentType: plan.contentTypeIndex,
      activeMode: plan.modeIndex,
      onlyReview: plan.onlyReview,
      shuffle: plan.shuffle,
      questionCount: plan.questionCount,
    })
  },
  persistPatch(patch) {
    app.globalData.reviewPlan = { ...app.globalData.reviewPlan, ...patch }
  },
  setTimeRange(e) {
    const activeTimeRange = Number(e.currentTarget.dataset.index)
    this.setData({ activeTimeRange })
    this.persistPatch({ timeRangeIndex: activeTimeRange })
  },
  setContentType(e) {
    const activeContentType = Number(e.currentTarget.dataset.index)
    this.setData({ activeContentType })
    this.persistPatch({ contentTypeIndex: activeContentType })
  },
  setMode(e) {
    const activeMode = Number(e.currentTarget.dataset.index)
    this.setData({ activeMode })
    this.persistPatch({ modeIndex: activeMode })
  },
  toggleOnlyReview() {
    const onlyReview = !this.data.onlyReview
    this.setData({ onlyReview })
    this.persistPatch({ onlyReview })
  },
  toggleShuffle() {
    const shuffle = !this.data.shuffle
    this.setData({ shuffle })
    this.persistPatch({ shuffle })
  },
  onQuestionCountInput(e) {
    const questionCount = Number(e.detail.value || 0)
    this.setData({ questionCount })
    this.persistPatch({ questionCount })
  },
  startReview() {
    const scopeTypeMap = ['today', 'week', 'month', 'custom']
    const contentTypeMap = ['word', 'sentence']
    const questionModeMap = ['A', 'B', 'C']
    const scope_type = scopeTypeMap[this.data.activeTimeRange]
    const content_type = contentTypeMap[this.data.activeContentType]
    const question_mode = questionModeMap[this.data.activeMode]
    const today = new Date()
    const yyyy = today.getFullYear()
    const mm = String(today.getMonth() + 1).padStart(2, '0')
    const dd = String(today.getDate()).padStart(2, '0')
    const scope_config = scope_type === 'custom' ? { start_date: `${yyyy}-${mm}-${dd}`, end_date: `${yyyy}-${mm}-${dd}` } : {}
    this.setData({ loading: true, error: '' })
    wx.request({
      url: `${app.globalData.baseUrl}/api/v1/review/generate`,
      method: 'POST',
      header: { 'Content-Type': 'application/json', 'X-OpenID': app.globalData.openid || '' },
      data: {
        scope_type,
        scope_config,
        content_type,
        question_mode,
        review_strategy: this.data.onlyReview ? 'review_only' : 'all',
        sort_mode: this.data.shuffle ? 'shuffle' : 'sequential',
        total_count: this.data.questionCount,
      },
      success: (res) => {
        app.globalData.reviewSessionMeta = res.data?.data || null
        wx.navigateTo({ url: '/pages/review-session/review-session' })
      },
      fail: () => this.setData({ error: '生成复习会话失败' }),
      complete: () => this.setData({ loading: false }),
    })
  },
})