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facebook.js
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facebook.js
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import { Router } from 'express';
import { PUBSUB_TOPIC_MISC } from '../../constant';
import publisher from '../../util/gcloudPub';
import { jwtAuth } from '../../middleware/jwt';
import { checkPlatformAlreadyLinked, socialLinkFacebook } from '../../util/api/social';
import { ValidationError } from '../../util/ValidationError';
import { userCollection as dbRef } from '../../util/firebase';
const router = Router();
router.get('/link/facebook/:user', jwtAuth('read'), async (req, res, next) => {
try {
const { user } = req.params;
if (req.user.user !== user) {
res.status(401).send('LOGIN_NEEDED');
return;
}
if (await checkPlatformAlreadyLinked(user, 'facebook')) {
throw new ValidationError('already linked');
}
res.sendStatus(200);
} catch (err) {
next(err);
}
});
router.post('/link/facebook', jwtAuth('write'), async (req, res, next) => {
try {
const {
access_token: accessToken,
user,
} = req.body;
if (req.user.user !== user) {
res.status(401).send('LOGIN_NEEDED');
return;
}
if (!accessToken || !user) {
throw new ValidationError('invalid payload');
}
const platform = 'facebook';
if (await checkPlatformAlreadyLinked(user, platform)) {
throw new ValidationError('already linked');
}
const {
displayName,
link,
userId,
appId,
pages,
} = await socialLinkFacebook(user, accessToken);
res.json({
platform,
displayName,
id: userId,
pages,
url: link,
});
const userDoc = await dbRef.doc(user).get();
const {
email,
displayName: userDisplayName,
wallet,
referrer,
locale,
timestamp,
} = userDoc.data();
publisher.publish(PUBSUB_TOPIC_MISC, req, {
logType: 'eventSocialLink',
platform,
user,
email: email || undefined,
displayName: userDisplayName,
wallet,
referrer: referrer || undefined,
locale,
facebookName: displayName,
facebookID: userId,
facebookAppId: appId,
facebookURL: link,
registerTime: timestamp,
});
} catch (err) {
next(err);
}
});
router.post('/link/facebook/:pageId', jwtAuth('write'), async (req, res, next) => {
try {
const { pageId } = req.params;
const { user } = req.body;
if (req.user.user !== user) {
res.status(401).send('LOGIN_NEEDED');
return;
}
if (!user) {
throw new ValidationError('invalid payload');
}
if (!await checkPlatformAlreadyLinked(user, 'facebook')) {
throw new ValidationError('facebook not linked');
}
const query = await dbRef.doc(user).collection('social').doc('facebook').get();
const fbData = query.data();
const payload = {};
if (!fbData.userLink) {
// move user profile link to userLink if not exists (for migration)
payload.userLink = fbData.url;
}
let url;
const selectedPage = (fbData.pages || []).find(page => page.id === pageId);
if (selectedPage) {
url = selectedPage.link;
} else if (fbData.userId === pageId && fbData.userLink) {
url = fbData.userLink;
}
if (url) {
payload.url = url;
}
await dbRef.doc(user).collection('social').doc('facebook').set(payload, { merge: true });
res.json({ url });
} catch (err) {
next(err);
}
});
export default router;