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/* @flow
*
* A reusable set of routes for signing in with different providers. Handles token-based authentication.
* Usage:
*
* const { main, callbacks } = createSigninRoutes('facebook');
* facebookRouter.get('/', main);
* facebookRouter.get('/callback', ...callbacks);
*/
import passport from 'passport';
import { URL } from 'url';
import isSpectrumUrl from '../../utils/is-spectrum-url';
const IS_PROD = process.env.NODE_ENV === 'production';
const FALLBACK_URL = IS_PROD
? 'https://spectrum.chat/home'
: 'http://localhost:3000/home';
type Strategy = 'twitter' | 'facebook' | 'github' | 'google';
export const createSigninRoutes = (
strategy: Strategy,
strategyOptions?: Object
) => {
return {
// The main route takes care of storing the redirect URL in the session
// and passing the right options
main: (req: express$Request, ...rest: any) => {
let url = FALLBACK_URL;
if (typeof req.query.r === 'string' && isSpectrumUrl(req.query.r)) {
url = req.query.r;
}
// Attach the redirectURL and authType to the session so we have it in the /auth/twitter/callback route
// $FlowIssue
req.session.redirectUrl = url;
return passport.authenticate(strategy, strategyOptions)(req, ...rest);
},
// The callbacks take care of authenticating, setting the response cookies,
// redirecting to the right place and handling tokens
callbacks: [
passport.authenticate(strategy, {
failureRedirect: '/',
}),
(req: express$Request, res: express$Response) => {
// $FlowIssue
const redirectUrl = req.session.redirectUrl
? new URL(req.session.redirectUrl)
: new URL(FALLBACK_URL);
redirectUrl.searchParams.append('authed', 'true');
if (req.authInfo && req.authInfo.message) {
redirectUrl.searchParams.append(
'toastMessage',
// $FlowIssue
req.authInfo.message
);
redirectUrl.searchParams.append('toastType', 'error');
}
// Delete the redirectURL from the session again so we don't redirect
// to the old URL the next time around
// $FlowIssue
req.session.redirectUrl = undefined;
res.cookie('_now_no_cache', '1', {
maxAge: 315569260000, // 10 years
sameSite: 'lax',
secure: false,
});
return res.redirect(redirectUrl.href);
},
],
};
};
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