datacops-cms/app/api/auth/[...nextauth]/route.ts

A modern, extensible CMS built with Next.js and Prisma.

import NextAuth, { NextAuthOptions, Session } from "next-auth"
import CredentialsProvider from "next-auth/providers/credentials"
import { PrismaAdapter } from "@auth/prisma-adapter"
import { PrismaClient } from "@prisma/client"
import bcrypt from "bcryptjs"
import type { JWT } from "next-auth/jwt"

const prisma = new PrismaClient()

const authOptions: NextAuthOptions = {
  adapter: PrismaAdapter(prisma),
  session: { strategy: "jwt" },
  providers: [
    CredentialsProvider({
      name: "Credentials",
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      async authorize(credentials) {
        if (!credentials?.email || !credentials?.password) return null
        const user = await prisma.user.findUnique({
          where: { email: credentials.email }
        })
        if (!user) return null
        const valid = await bcrypt.compare(credentials.password, user.password)
        if (!valid) return null
        return {
          id: user.id,
          email: user.email,
          name: user.name,
          role: user.role, // <--- this is fine, not affecting AdapterUser type
          avatar: user.avatar || "", // Ensure avatar is always a string
        }
      }
    })
  ],
  callbacks: {
    async session({ session, token }: { session: Session; token: JWT }) {
      if (session.user) {
        session.user.id = token.sub as string
        session.user.role = (token.role as "SUPERADMIN" | "ADMIN" | "USER") || "USER"
      }
      return session
    },
    async jwt({ token, user }) {
      if (user) {
        // @ts-expect-error custom field, not typed on base JWT
        token.role = user.role
      }
      return token
    }
  },
  pages: {
    signIn: "/login",
  }
}

const handler = NextAuth(authOptions)
export { handler as GET, handler as POST }