Where can I query my database for Facebook logins with NextAuth.js?

[dalegacusan]

Question 💬

If in Credentials provider, there is an authorize property where you can query your database to find a user with a certain email and password.

For Facebook provider, there seems to be none. I'm not sure where I can query my database to check if the facebook user's email already exists. If not, then I will redirect that use to a certain page to complete registration.

Note that for Credentials provider, I query my database in the authorize property

How to reproduce ☕️

export default NextAuth({
    providers: [
        CredentialsProvider({
            // The name to display on the sign in form (e.g. "Sign in with...")
            name: 'Credentials',
            credentials: {
                username: {
                    label: 'Username',
                    type: 'text',
                    placeholder: 'Username',
                },
                password: {
                    label: 'Password',
                    type: 'password',
                    placeholder: 'Password',
                },
                recaptchaToken: {
                    type: 'text',
                },
            },
            async authorize(credentials) {
                try {
                    // Query Database to find a user with Username/Email and Password
                } catch (err) {
                   // Account not found
                }
            },
        }),
        FacebookProvider({
            clientId: process.env.FACEBOOK_CLIENT_ID || '',
            clientSecret: process.env.FACEBOOK_CLIENT_SECRET || '',
        }),
    ],
    callbacks: {
        jwt: async ({ token, user, account }) => {
            return token;
        },
        session: async ({ session, user, token }) => {
            return session;
        },
    },
    jwt: {
        secret: process.env.JWT_SECRET,
    },
    pages: {
        signIn: '/',
        signOut: '/',
        error: '/',
    },
});

Contributing 🙌🏽

No, I am afraid I cannot help regarding this