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

App({
  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: pull on empty local, push on non-empty local
    const records = wx.getStorageSync('training_records')
    if (!records || Object.keys(records).length === 0) {
      // Case 1: Fresh install — restore from cloud
      cloud.pullAll().then(cloudData => this._restoreFromCloud(cloudData))
    } else {
      // Case 2: Has local data — push to cloud (local is authoritative)
      cloud.pushAll()
    }
  },

  _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
  }
})