Req.user is available only under a specific route - NestJS - node.js

Question

I use NestJS with passport for my authentication via Google. Unfortunately, I have a problem with req.user as I can get it only under the callback route, but not anywhere else.
So the question is: How to add req.user to all other routes within the module?
To demonstrate it better: In my Google.strategy.ts I handle the req and all - and of course I have the access to the google's profile.
#Injectable()
export class GoogleStrategy extends PassportStrategy(Strategy, 'google') {
constructor(private readonly authService: AuthService) {
super({
clientID: process.env.GOOGLE_CLIENT_ID,
clientSecret: process.env.GOOGLE_SECRET_KEY,
callbackURL: '/api/v1/auth/google/callback',
scope: ['email', 'profile'],
});
}
async validate(accessToken, refreshToken, profile, done) {
const user = await this.authService.verifyUser(profile.id);
if (user) {
done(null, user);
console.log('user already exists');
} else {
const user = this.authService.save({
googleId: profile.id,
displayName: profile.displayName,
});
done(null, user);
console.log('user created');
}
}
}
Here lays the problem though, after the validation of the request I can access req.user ONLY in the callback route.
#Controller('/api/v1/auth/google/')
export class AuthController {
constructor(private readonly authService: AuthService, private readonly googleStrategy: GoogleStrategy) {
}
#Get('')
#UseGuards(AuthGuard('google'))
// eslint-disable-next-line #typescript-eslint/no-empty-function
async googleAuth(#Req() req) {}
#Get('callback')
#UseGuards(AuthGuard('google'))
async googleAuthRedirect(#Res() res, #Req() req) {
//HERE IT WORKS AND I CAN ACCESS REQ.USER WITH ALL THE DETAILS
console.log(req.user)
}
#Get('login')
async info(#Req() req, #Res() res) {
//HERE I GET 'UNDEFINED'
console.log(req.user)
}
}
I found this problem today when I was actually trying to grab the data from the callback route, but... I cannot!
I always get:
Access to XMLHttpRequest at 'https://accounts.google.com/o/oauth2...' (redirected from 'http://localhost:4000/api/v1/auth/google/callback') from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
I tried to enableCors, add options, headers... literally everything, but I'm still getting this error, so I wanted to use a different route with the req.user (and with plain express.js of course it worked). Any ideas, guys?