Not being able to retrieve data saved in cookie-session - node.js

Question

I am trying to make a dynamic website in Cloud Functions for Firebase.
However, I am stuck at this point.
What I am trying to achieve is that I want to save particular form details and then push them to the DB if the user is logged in. If the user is not logged in I would like to save those forms details somewhere and then redirect the user to login. When he does login I save the form details under his userid.
Now I thought of using firebase-cookie-session for this. Since it's the only one allowed in firebase cloud functions.
However, my problem is that when the user is redirected to login. I no longer have access to the session in that request.
This is how I approached this:
I setup my express app:
var session = require('firebase-cookie-session');
app.use(session({
keys: ['cookie_secret'],
name: 'session',
sameSite:true,
proxy: true,
resave: true,
saveUninitialized: true,
maxAge: 360*12*24*36*36
}));
then in post I save data in session: -> console.log(req.session.packageDetails) works perfectly
homepageRouter.post("/save-form-details", function (req, res, next) {
const packageDetails = JSON.parse(JSON.stringify(req.body));
firebaseController.isUserSignedIn().then(signedinUser => {
if(signedinUser){
firebaseController.getCurrentUser().then(currentUser => {
firebaseController.putPackageToUser(currentUser, packageDetails).then(success => {
return success;
});
}).catch(errorMessage => {
console.log(errorMessage);
});
} else {
req.session.userSignedIn = false;
req.session.packageIncluded = true;
req.session.packageDetails = packageDetails;
console.log('Hello Hello Hello Hello Hello Hello');
console.log(req.session.packageDetails);
res.send({
userSignedIn: false,
redirectTo: '/signup-login'
});
}
console.log('User Status: ' + signedinUser);
console.log('Server Side: ' + JSON.parse(JSON.stringify(req.body)));
});
});
After the redirection from the above to below the session goes to undefined, No idea why.
signupLoginRouter.post("/login", function (req, res, next) {
const accountJSON = JSON.stringify(req.body);
let account = JSON.parse(accountJSON);
console.log('HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELP');
console.log(req.session.packageDetails);
}
I think I either setup something wrong or understood something wrong. If anyone can help. Thay would be appreciated