@pvway/alpha-oas
Version:
Alpha OAuth Service by p.v.Way
53 lines • 7.49 kB
JavaScript
import { v4 as uuidV4 } from 'uuid';
import { AlphaSessionData } from "./alpha-session-data";
export class AlphaOasInterceptor {
intercept(req, next) {
const eReq = AlphaOasInterceptor.enrichReq(req);
return next.handle(eReq);
}
static handlerFn(req, next) {
const eReq = this.enrichReq(req);
return next(eReq);
}
static enrichReq(req) {
let headers = req.headers;
// getting languageCode
// set by the principal when setting the user
let languageCode = sessionStorage.getItem('alphaLanguageCode');
if (!languageCode) {
const nav = window.navigator;
const userLang = (nav.language || nav.userLanguage);
languageCode = userLang
? userLang.substring(0, 2)?.toLowerCase()
: 'en';
}
// always add the language-code header
headers = headers.append('language-code', languageCode);
/**
* the ClientId (client-id header) identifies the client.
* There will be one client-id for each browser.
* With this in place it will be possible to
* map a new user to his browsing history
* ClientId is only generated once and stored in
* the browser localstorage associated to the url
*/
let clientId = localStorage.getItem('alphaClientId');
if (clientId == null) {
clientId = uuidV4();
localStorage.setItem('alphaClientId', clientId);
}
// always add the client-id header
headers = headers.append('client-id', clientId);
/**
* when an accessToken is present insert the authorization header
* using the accessToken with the bearer scheme
*/
const sd = AlphaSessionData.retrieve();
const token = sd?.accessToken;
if (token) {
headers = headers.append('authorization', `bearer ${token}`);
}
return req.clone({ headers });
}
}
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