NextAuth V5 session data undefined

Question

// auth.ts
import NextAuth, { type DefaultSession } from "next-auth"
import { PrismaAdapter } from "@auth/prisma-adapter"
import { PrismaClient, Role } from "@prisma/client"
import authConfig from "@/auth.config"

const prisma = new PrismaClient()

declare module "next-auth" {

interface User {
        last_name: string;
        first_name: string;
        telegram_id: string;
        username?: string;
        chat_id: string;
        is_bot: Boolean;
        phoneIdentifier?: string;

soldeinitial: number;
        soldePhone: number;

code?: string;
        codeToken?: string;

role: Role;
    }

interface Session {
        user: {
            id: string;
            last_name: string;
            first_name: string;
            telegram_id: string;
            username?: string;
            chat_id: string;
            is_bot: Boolean;
            phoneIdentifier?: string;

soldeinitial: number;
            soldePhone: number;

code?: string;
            codeToken?: string;

role: Role;
        } & DefaultSession["user"]
    }
}

export const { auth, handlers, signIn, signOut } = NextAuth({
    adapter: PrismaAdapter(prisma),
    session: { strategy: "jwt" },

...authConfig,

callbacks: {
        async session({ session, user }) {
            console.log(session.user.code)

session.user = {
                ...session.user,
                is_bot: true
            }
            return session
        },
    }
})

Neotropic Cormorant · Answer

auth.config.ts
import { type NextAuthConfig } from "next-auth";
import Credentials from "next-auth/providers/credentials";
import { signInSchema } from "@/schema";
import { prisma } from "@/modules/prisma";

export default {
    providers: [
        Credentials({
            credentials: {
                code: {}
            },
            type: "credentials",
            name: "code",
            async authorize(credentials) {
                try {
                    let user = null;
                    const { code } = await signInSchema.parseAsync(credentials)

user = await prisma.user.findFirst({
                        where: {
                            code
                        }
                    })

if (!user) {
                        throw new Error("User not found.")
                    }

return user
                } catch (error: any) {
                    throw new Error(error.message)
                }
            },
        })
    ]
} satisfies NextAuthConfigHello, when I try to create the login, session.user.code is undefined at each faith and the session does not work, who would have the solution? pleasethe code is in 2 parts, the second is at the top

NextAuth V5 session data undefined

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