@jaak/playback-utils

Utility methods for interacting with the JAAK Playback API

⚠️ This repo is under active development and the API is likely to change without warning ⚠️

Installation

npm install @jaak/playback-utils

Usage

Load the @jaak/playback-utils package:

const utils = require('@jaak/playback-utils')

Key management

Generate a Key:

const key = await utils.Key.generate()

Instantiate a key from a JSON Web Key (JWK):

const jwk = {
  "kty": "EC",
  "kid": "D6LJKdvD1gcmuyU7G5JeWltFV0AiXpxUx6_UyhsIg80",
  "crv": "P-256",
  "x": "m8ouXM1o0f7cOPmMzN_vfsFouab-n0S86hUegEZb0Ks",
  "y": "iqbequlfZJF1fubrAh2Hmrly9ZWup83NJZc5vsNt4xQ",
  "d": "kyWdoePrPNDWrVkEhXo8KlnA61JvwcRT-DmJIGb_W7A"
}

const key = await utils.Key.fromJWK(jwk)

Print a key's ID:

const keyID = await key.id

console.log(keyID)

Export a key as a public JWK:

const jwk = await key.toJWK()

Export a key as a private JWK:

const jwk = await key.toJWK({ private: true })

Generate a JSON Web Signature (JWS) using a key:

const payload = { foo: "bar" }

const jws = await key.sign(payload)

Access Vouchers

Generate an access voucher with generateAccessVoucher:

const key = await utils.Key.generate()
const licenseID = '0016e038-eb2e-4596-96fb-8864c76d9004'
const nonce = Date.now().toString()

const voucher = await utils.generateAccessVoucher(licenseID, key, nonce)

HTTP Requests

Send a GraphQL request to the Playback API using sendSignedRequest:

const payload = {
  query: 'query { application { id } }',
}
const uri = 'https://playback.beta.jaak.io/graphql'
const key = await utils.Key.fromJWK(jwk)

try {
  const { data, errors } = await sendSignedRequest(payload, uri, key)

  if (errors) {
    // GraphQL errors were returned from the server
    // client can choose how to handle them
  }

  // Operate on success data
  console.log(data.application.id)

} catch (error) {
  // A 4xx or 5xx HTTP status code was returned from the request
}

Custom Web Crypto API

Set a Web Crypto API polyfill using setCryptoProvider:

const NodeWebCrypto = require('node-webcrypto-ossl')

const webcrypto = new NodeWebCrypto()

utils.setCryptoProvider(webcrypto)

Contributing 🙋‍♀️

See the jaak.js contributing guide.