test-api.js

const functions = require('firebase-functions')

const admin = require('firebase-admin')
admin.initializeApp()

const db = admin.firestore()
const settings = {timestampsInSnapshots: true};
db.settings(settings);


const express = require('express')
const app = express()

const authenticate = async (req, res, next) => {
  if (!req.headers.authorization || !req.headers.authorization.startsWith('Bearer ')) {
    return res.status(403).send('Unauthorized')
  }
  const idToken = req.headers.authorization.split('Bearer ')[1]
  try {
    req.user = await admin.auth().verifyIdToken(idToken)
    return next()
  } catch (e) {
    return res.status(403).send('Unauthorized')
  }
}

app.get('/test', authenticate, async (req, res) => res.send(`Hello ${req.user.email}`))
app.get('/healthz', (req, res) => res.send({status: true}))
app.get('/me', (req, res) => db.collection('test')
    .doc('QQmFkOhk01ifRNefscTX')
    .get()
    .then(userInfo => res.send(userInfo.data()))
    .catch(error => res.send({error}))
)

exports.api = functions.https.onRequest(app)