我只是想分享我的代碼供其他人使用。
我已經有了代碼來適應存在意識。
索引.js
import database from './firebase/firebase' //Firebase setup for client
firebase.auth().onAuthStateChanged((user) => {
//Handle login and redirect
if (user) {
//We are logged in
addPresenceAwarenessListener()
}else{
...
}
}
const addPresenceAwarenessListener = () => {
// Create a reference to the special '.info/connected' path in
// Realtime Database. This path returns `true` when connected
// and `false` when disconnected.
database.ref('.info/connected').on('value', (snapshot) => {
// If we're not currently connected, don't do anything.
if (snapshot.val() == false) {
return
}
const uid = firebase.auth().currentUser.uid
//Push last login/logout to user profile
const userLastLoginOutRef = database.ref(`users/${uid}`)
userLastLoginOutRef.onDisconnect().update({lastLoginOut: firebase.database.ServerValue.TIMESTAMP})
.then(() => { userLastLoginOutRef.update({lastLoginOut: firebase.database.ServerValue.TIMESTAMP}) })
})
}
會話處理 - 在n小時后過期會話（在數據庫中設置“sessExp”）
firebase-db.js - 云功能的基本 Firebase 設置
const admin = require('firebase-admin')
const databaseConnection = {
serviceAccountFile: './my-project.json',
databaseURL: 'https://my-project.firebaseio.com/'
}
const serviceAccount = require(databaseConnection.serviceAccountFile)
const app = admin.initializeApp({
credential: admin.credential.cert(serviceAccount),
databaseURL: databaseConnection.databaseURL
}, 'remindMiNotifier')
const database = admin.database(app)
module.exports = database
sessionSignout.js - 在特定時間段后注銷用戶 - 如果指定。默認為永久會話。
const functions = require('firebase-functions')
const moment = require('moment')
const database = require('../../firebase-db')
const admin = database.app
//Import enviroment variable config (.env)
require('dotenv').config()
//Export cron job - deploy: firebase deploy --only functions:sessionSignout
exports.sessionSignout = functions
.region('europe-west1')
.pubsub
.schedule('*/15 * * * *')
.timeZone('Europe/Stockholm')
.onRun(async (event) => {
//Start execution
const now = moment()
const defaultSessionTime = 0 //Eternal session
//Get all users and calculate inactive time - time since last login
let logoutUsersArray = []
await database.ref(`users`)
.once('value', (usersSnapshots) => {
usersSnapshots.forEach((snapshot) => {
const userData = snapshot.val()
const lastLoginOut = (userData.lastLoginOut) ? userData.lastLoginOut : 0
//Only process users that has a login/out time stamp
if(lastLoginOut > 0){
const userSessionTime = (userData.sessExp) ? userData.sessExp : defaultSessionTime
const hoursSinceLastLoginOut = now.diff(lastLoginOut, 'hours')
const logoutUser = ( userSessionTime > 0 && (hoursSinceLastLoginOut > userSessionTime) )
if(logoutUser){
const userId = snapshot.key
const userName = (userData.alias) ? userData.alias : userData.displayName
const email = (userData.email) ? userData.email : ''
const userObject = {
userId,
userName,
email,
lastLoginOut,
diffHours: now.diff(lastLoginOut, 'hours')
}
logoutUsersArray.push(userObject)
}
}
})
})
console.log('logoutUsersArray', logoutUsersArray)
//Collect all promises to carry out
let myPromises = []
// Revoke all refresh tokens for each user
logoutUsersArray.forEach((logoutUser) => {
const uid = logoutUser.userId
myPromises.push(
admin.auth().revokeRefreshTokens(uid)
.then(() => {
return admin.auth().getUser(uid)
})
.then((userRecord) => {
return new Date(userRecord.tokensValidAfterTime).getTime() / 1000
})
.then((timestamp) => {
// Retrieve the timestamp of the revocation, in seconds since the epoch.
console.log('Tokens revoked at: ', timestamp)
return Promise.resolve(true)
})
.catch((err) => {
console.error('Error', err)
return Promise.reject(err)
})
)
})
//Execute promises
console.log('Execute promises')
return Promise.all(myPromises)
.then(() => Promise.resolve(true))
.catch((err) => {
console.error('Error', err)
return Promise.reject(err)
})
})//End sessionSignout
