const app = getApp()

Page({
  data: {
    accuracy: 0,
    timeUsed: '--:--',
    total: 0,
    mastered: 0,
    reviewNeeded: 0,
    improved: 0,
    regressed: 0,
    loading: false,
    error: '',
  },
  onLoad() {
    this.loadResult()
  },
  loadResult() {
    const sessionId = app.globalData.reviewSessionMeta?.id
    const fallbackSession = app.globalData.reviewSession
    if (!sessionId) {
      if (fallbackSession?.completed) {
        this.setData({ error: '本地复习已完成，但结果会话信息已丢失' })
      } else {
        this.setData({ error: '暂无复习结果' })
      }
      return
    }
    this.setData({ loading: true, error: '' })
    wx.request({
      url: `${app.globalData.baseUrl}/api/v1/review-result?session_id=${sessionId}`,
      header: { 'X-OpenID': app.globalData.openid || '' },
      success: (res) => {
        const data = res.data?.data || {}
        const total = Number(data.total || 0)
        const correct = Number(data.correct || 0)
        const wrong = Number(data.wrong || Math.max(0, total - correct))
        const accuracy = total ? Math.round((correct / total) * 100) : 0
        this.setData({
          total,
          accuracy,
          mastered: Number(data.mastered ?? correct),
          reviewNeeded: Number(data.review_needed ?? wrong),
          improved: Number(data.improved ?? 0),
          regressed: Number(data.regressed ?? 0),
          timeUsed: data.time_used || '--:--',
        })
      },
      fail: () => this.setData({ error: '结果加载失败' }),
      complete: () => this.setData({ loading: false }),
    })
  },
  restart() {
    app.globalData.reviewSession = { deck: [], currentIndex: 0, correctCount: 0, wrongCount: 0, completed: false, currentAnswer: '' }
    wx.reLaunch({ url: '/pages/review-config/review-config' })
  },
  goHome() {
    wx.reLaunch({ url: '/pages/index/index' })
  },
})