const themeMod = require('./utils/theme')
const cloud = require('./utils/cloud')
const storage = require('./utils/storage')

App({
  async onLaunch() {
    // Init cloud storage (no-op if not configured)
    cloud.init()

    const settings = wx.getStorageSync('user_settings')
    if (!settings) {
      wx.setStorageSync('user_settings', {
        planId: 'beginner',
        voiceGuide: true,
        vibrate: true,
        planStartDate: storage.getToday()
      })
    } else if (!settings.planStartDate) {
      // Migrate: add planStartDate for existing users
      settings.planStartDate = storage.getToday()
      wx.setStorageSync('user_settings', settings)
    }

    const streak = wx.getStorageSync('current_streak')
    if (!streak) {
      wx.setStorageSync('current_streak', { count: 0, lastDate: '' })
    }

    this.globalData.theme = themeMod.getCurrentTheme()

    // Sync with cloud: always locate our doc first (pullAll caches
    // _openid / _docId), then either restore or push. The previous flow
    // only pulled when local was empty, so on a cold start with non-empty
    // local it pushed without locating — and because the module-level
    // _openid / _docId caches had been reset, pushAll fell through to
    // add() and created a duplicate cloud doc every cold start. The
    // leaderboard then summed duration across N docs for the same user.
    const records = wx.getStorageSync('training_records')
    if (cloud.enabled) {
      try {
        const cloudData = await cloud.pullAll()
        if (!records || Object.keys(records).length === 0) {
          // Case 1: Fresh install (or user cleared local) — restore from cloud
          this._restoreFromCloud(cloudData)
        } else {
          // Case 2: Has local data — push to cloud (local is authoritative)
          // pullAll already populated _openid / _docId, so pushAll will
          // update the existing doc instead of creating a duplicate.
          cloud.pushAll()
        }
      } catch (e) {
        console.error('Cloud sync on launch failed:', e)
      }
    }
  },

  _restoreFromCloud(cloudData) {
    if (!cloudData) return
    try {
      if (cloudData.records && Object.keys(cloudData.records).length > 0) {
        wx.setStorageSync('training_records', cloudData.records)
      }
      if (cloudData.settings) {
        wx.setStorageSync('user_settings', cloudData.settings)
      }
      if (cloudData.streak) {
        wx.setStorageSync('current_streak', cloudData.streak)
      }
      if (cloudData.customPlans && typeof cloudData.customPlans === 'object') {
        wx.setStorageSync('custom_plans', cloudData.customPlans)
      }
      if (cloudData.themeId) {
        themeMod.setTheme(cloudData.themeId)
      }
    } catch (e) {
      console.error('Cloud restore failed:', e)
    }
  },

  globalData: {
    planId: 'beginner',
    theme: null
  }
})