firestore_test.js

const path = require('path')

const firebase = require('firebase-admin')

console.log(path.join(__dirname, 'serviceAccountKey.json'))
var serviceAccount = require(path.join(__dirname, 'serviceAccountKey.json'))

const app = firebase.initializeApp({
  credential: firebase.credential.cert(serviceAccount),
  storageBucket: 'ticketing-dlt-poc.appspot.com'
})

// const db = firebase.firestore(app)
// var citiesRef = db.collection('cities')

// const test = async () => {
//   await citiesRef.doc('SF').set({
//     name: 'San Francisco', state: 'CA', country: 'USA',
//     capital: false, population: 860000
//   })
//   await citiesRef.doc('LA').set({
//     name: 'Los Angeles', state: 'CA', country: 'USA',
//     capital: false, population: 3900000
//   })
//   await citiesRef.doc('DC').set({
//     name: 'Washington, D.C.', state: null, country: 'USA',
//     capital: true, population: 680000
//   })
//   await citiesRef.doc('TOK').set({
//     name: 'Tokyo', state: null, country: 'Japan',
//     capital: true, population: 9000000
//   })
//   await citiesRef.doc('BJ').set({
//     name: 'Beijing', state: null, country: 'China',
//     capital: true, population: 21500000
//   })

//   return citiesRef.where('name', '==', 'Beijing').get()
//     .then(snapshot => {
//       snapshot.forEach(doc => {
//         console.log(doc.id, '=>', doc.data())
//       })
//     })
//     .catch(err => {
//       console.log('Error getting documents', err)
//     })

// }

// test().then(() => console.log('done'))


const UUID = require('uuid-v4');
const storage = firebase.storage()
const bucket = storage.bucket()
bucket.file('qr/myqr.png')
  .getMetadata()
  .then(metadata => console.log(JSON.stringify(metadata, null, 2)))

let uuid = UUID()

const fs = require('fs')
fs.readFileSync('logo.png')
const stream = bucket.file('qr/logo.png')
  .createWriteStream({
    uploadType: 'media',
    metadata: {
      contentType: 'image/png',
      metadata: {
        firebaseStorageDownloadTokens: uuid
      }
    }
  })
stream.write(fs.readFileSync('logo.png'))
stream.on('finish', () => {
  bucket.file('qr/logo.png')
    .getMetadata()
    .then(metadata => console.log(JSON.stringify(metadata, null, 2)))
    .then(() =>{
      console.log('https://firebasestorage.googleapis.com/v0/b/' + 'ticketing-dlt-poc.appspot.com' + '/o/' + encodeURIComponent('qr/logo.png') + '?alt=media&token=' + uuid)
    })
})

stream.end()