1. Detail the issue

I am facing a challenge while developing a Full Stack Website using Next.js and Typescript. Specifically, I am having difficulty persisting the Github Username in the database when a user signs in via Github OAuth. Should I consider storing the user ID instead? My goal is to have URLs like "domain.com/[github username]". Currently, I am using the Github username as the primary key for storing user data in MongoDB. The user ID is added to the database during the sign-in callback in [...nextauth].ts.

Here is my [...nextauth].ts file:

/*
File: [..nextauth].ts
Description: This file will use NextAuth to handle requests, responses of any OAuth...
*/
import NextAuth from "next-auth/next";
import GitHubProvider from "next-auth/providers/github"
import type {CredentialsProvider} from "next-auth/providers";
import axios from "axios"
import clientPromise from "../../../lib/mongodb";
import {useSession} from "next-auth/react";

export default NextAuth({
    providers: [
        GitHubProvider({
            clientId: process.env.GITHUB_CLIENT_ID,
            clientSecret : process.env.GITHUB_CLIENT_SECRET,
            
        }),
    ],
    callbacks: {
        async jwt({ token, user, account, profile, isNewUser }) {
        // Persist the OAuth access_token to the token right after signin
        if(profile){
            token.login = profile.login
            // @ts-ignore
            user.login = profile.login
            console.log(user)
            // code up here is the user name in the jwt but user.login isn't being persisted in session nor signin
            token.id = profile.id
        }
        if (account) {
            token.accessToken = account.access_token
        }
        return token
        },
        async session({ session, token, user}) {
            // Send properties to the client, like an access_token from a provider.
            session.accessToken = token.accessToken
            session.login = token.login;
            session.id = token.id;
            // @ts-ignore
            console.log(user.name)
            return session
        },
        async signIn({ user: User, account:Account, profile: profile, email:Email }) {
            // define client
            const client = await clientPromise;

            // define database
            const db = client.db("userData");

            // define users
            const users = db.collection("users");

            console.log(User.login)


            try{
                // get user data
                const insertDocument = {"_id":User.id, "User":User}
                // @ts-ignore
                const dataUsers = await db.collection("users").insertOne(insertDocument);
                if(dataUsers){
                    console.log("Added " + String(User.id) + " to database!")
                    return true;
                }

                // if we are here user simply could not be added at all...

                return false;
            } catch (error) {
                console.log("User could not be added to database due to an error or either existing")
                return true;

            }
            return true;
        },
    },
    debug:true,
});

However, the main issue lies in not being able to retrieve the "login/username" within the sign-in callback function arguments.

       async signIn({ user: User, account:Account, profile: profile, email:Email }) {

2. Attempts made so far

I have observed that the Github username is available in the JWT function. However, despite declaring the variable correctly, the 'User' object does not have that property elsewhere.

async jwt({ token, user, account, profile, isNewUser }) {
        // Persist the OAuth access_token to the token right after signin
        if(profile){
            token.login = profile.login
            // @ts-ignore
            user.login = profile.login // code here is the user name in the jwt but user.login isn't being saved in the other functions for Arg User
            persisted in session nor signin
            token.id = profile.id
        }
        if (account) {
            token.accessToken = account.access_token
        }
        return token
        },

3. In-depth analysis of the code

Currently, I can only retrieve the user ID, which appears to be a numerical value used by Github. However, I specifically require the Github username for my project.

try{
                // get user data
                const insertDocument = {"_id":User.id, "User":User}
                // @ts-ignore
                const dataUsers = await db.collection("users").insertOne(insertDocument);
                if(dataUsers){
                    console.log("Added " + String(User.id) + " to database!")
                    return true;
                }

                // if we are here user simply could not be added at all...

                return false;
            } catch (error) {
                console.log("User could not be added to database due to an error or either existing")
                return true;

            }