lc
a04c017e37
Problem: All data stored in wx.StorageSync is permanently lost when
user deletes the mini-program or clears cache.
Solution: Sync data to WeChat CloudBase (wx.cloud.database).
- Graceful degradation: if cloud env isn't configured, all local
storage works exactly as before.
- On app launch: if local records are empty, pull from cloud.
- On writes: push to cloud (debounced 2s) after saveRecord,
deleteRecord, saveSettings, updateStreak, setTheme.
- Clear data in settings also clears cloud.
Files:
- utils/cloud.js: cloud sync wrapper (init, pullAll, pushAll, clearAll)
- app.js: cloud.init() + restore on fresh install
- utils/storage.js: cloud.pushAll() after every mutation
- utils/theme.js: cloud.pushAll() after setTheme
- pages/settings/settings.js: cloud.clearAll() when clearing data
- project.config.json: cloudfunctionRoot added
Setup required (one-time in WeChat DevTools):
1. Open 'Cloud Development' panel → enable CloudBase
2. Create environment → copy env ID
3. In app.js, change wx.cloud.init() → wx.cloud.init({ env: 'YOUR-ENV-ID' })
4. Create 'plank_data' collection in cloud database
5. Set collection permission to 'Only creator can read/write'
103 lines
2.5 KiB
JavaScript
103 lines
2.5 KiB
JavaScript
const DB_COLLECTION = 'plank_data'
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let _db = null
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let _pushTimer = null
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let _enabled = false
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const getDb = () => {
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if (!_enabled) return null
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if (!_db) {
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try { _db = wx.cloud.database() } catch (e) { _enabled = false }
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}
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return _db
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}
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/**
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* Call once from app.js onLaunch to initialize cloud.
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* Gracefully degrades if cloud environment isn't configured yet.
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*/
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const init = () => {
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try {
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wx.cloud.init({ traceUser: true })
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_enabled = true
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} catch (e) {
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_enabled = false
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}
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}
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/**
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* Pull all user data from cloud. Returns null if cloud is unavailable or no data exists.
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*/
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const pullAll = async () => {
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const db = getDb()
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if (!db) return null
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try {
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const coll = db.collection(DB_COLLECTION)
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const res = await coll.where({ _openid: '{openid}' }).get()
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if (res && res.data && res.data.length > 0) {
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return res.data[0]
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}
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return null
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} catch (e) {
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console.error('Cloud pull failed:', e)
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return null
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}
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}
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/**
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* Schedule a cloud push (debounced at 2s).
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* Call this after any local data mutation.
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*/
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const pushAll = () => {
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if (!_enabled) return
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if (_pushTimer) clearTimeout(_pushTimer)
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_pushTimer = setTimeout(() => _doPush(), 2000)
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}
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const _doPush = async () => {
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const db = getDb()
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if (!db) return
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try {
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// Lazily require to avoid circular dependency at module-load time
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const storage = require('./storage')
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const themeMod = require('./theme')
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const data = {
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records: storage.getRecords(),
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settings: storage.getSettings(),
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streak: storage.getStreak(),
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themeId: themeMod.getCurrentTheme().id,
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updatedAt: new Date()
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}
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const coll = db.collection(DB_COLLECTION)
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const existing = await coll.where({ _openid: '{openid}' }).get()
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if (existing && existing.data && existing.data.length > 0) {
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await coll.doc(existing.data[0]._id).update({ data })
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} else {
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await coll.add({ data })
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}
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} catch (e) {
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console.error('Cloud push failed:', e)
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}
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}
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/**
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* Delete all cloud data for current user.
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*/
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const clearAll = async () => {
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const db = getDb()
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if (!db) return
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try {
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const coll = db.collection(DB_COLLECTION)
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const existing = await coll.where({ _openid: '{openid}' }).get()
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if (existing && existing.data && existing.data.length > 0) {
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await coll.doc(existing.data[0]._id).remove()
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}
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} catch (e) {
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console.error('Cloud clear failed:', e)
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}
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}
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module.exports = { init, pullAll, pushAll, clearAll, get enabled() { return _enabled } }
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