@aimee-blue/ab-service-kit/lib/shared/auth/selfSignedTokens.js

Aimee Blue Service Template

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createSelfSignedTokens = createSelfSignedTokens;
exports.currentSelfSignedToken = currentSelfSignedToken;
exports.selfSignedTokens = void 0;

var _rxjs = require("rxjs");

var _abAuth = require("@aimee-blue/ab-auth");

var _operators = require("rxjs/operators");

function createSelfSignedTokens(params, deps = {
  now: () => (0, _rxjs.from)(Promise.resolve(Date.now())),
  signJwt: (...args) => (0, _rxjs.from)((0, _abAuth.signJwtUsingServiceAccountKey)(...args))
}) {
  const nextJwt = (0, _rxjs.defer)(() => deps.now().pipe((0, _operators.take)(1), (0, _operators.switchMap)(now => {
    const iat = now / 1000;
    const exp = iat + params.expireInMillis / 1000;
    return deps.signJwt({
      aud: 'https://aimeeblue.com/functions',
      iat,
      exp
    }).pipe((0, _operators.take)(1), (0, _operators.map)(result => ({ ...result,
      expiresAtMillis: now + params.expireInMillis
    })));
  })));
  return (0, _rxjs.timer)(0, params.rollNewTokenInMillis, params.scheduler).pipe((0, _operators.exhaustMap)(() => nextJwt), (0, _operators.shareReplay)({
    bufferSize: 1,
    refCount: true,
    windowTime: params.rollNewTokenInMillis,
    scheduler: params.scheduler
  }));
}

function buildSelfSignedTokensLazy() {
  let tokensStream = null;
  return () => {
    if (tokensStream) {
      return tokensStream;
    }

    return tokensStream = createSelfSignedTokens({
      expireInMillis: 3600 * 1000,
      rollNewTokenInMillis: 3000 * 1000
    });
  };
}

const selfSignedTokens = buildSelfSignedTokensLazy();
exports.selfSignedTokens = selfSignedTokens;

async function currentSelfSignedToken() {
  const result = await selfSignedTokens().pipe((0, _operators.take)(1)).toPromise();
  return result.signedJwt;
}
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