import {
  getServerSession,
  type DefaultSession,
  type NextAuthOptions,
} from "next-auth";
import AzureADProvider from "next-auth/providers/azure-ad";

/**
 * Module augmentation for `next-auth` types. Allows us to add custom properties to the `session`
 * object and keep type safety.
 *
 * @see https://next-auth.js.org/getting-started/typescript#module-augmentation
 */
declare module "next-auth" {
  interface Session extends DefaultSession {
    user: {
      id: string;
      // ...other properties
      // role: UserRole;
    } & DefaultSession["user"];
  }

  // interface User {
  //   // ...other properties
  //   // role: UserRole;
  // }
}

/**
 * Options for NextAuth.js used to configure adapters, providers, callbacks, etc.
 *
 * @see https://next-auth.js.org/configuration/options
 */
export const authOptions: NextAuthOptions = {
  callbacks: {
    session: ({ session, token }) => ({
      ...session,
      user: {
        ...session.user,
        id: token.sub,
      },
    }),
  },
  providers: [
    AzureADProvider({
      clientId: process.env.AZURE_AD_CLIENT_ID ?? "",
      clientSecret: process.env.AZURE_AD_CLIENT_SECRET ?? "",
      tenantId: process.env.AZURE_AD_TENANT_ID ?? "",
    }),
  ],
  pages: {
    signIn: "/login",
    signOut: "/login",
    error: "/login",
  },
};

/**
 * Wrapper for `getServerSession` so that you don't need to import the `authOptions` in every file.
 *
 * @see https://next-auth.js.org/configuration/nextjs
 */
export const getServerAuthSession = () => getServerSession(authOptions);