name-100-uio-gamers/src/app/lib/auth.ts

import { verifyUserRole } from "@/lib/discord";
import type { NextAuthOptions } from "next-auth";
import DiscordProvider, { type DiscordProfile } from "next-auth/providers/discord";

export const authOptions: NextAuthOptions = {
  providers: [
    DiscordProvider({
      clientId: process.env.DISCORD_CLIENT_ID as string,
      clientSecret: process.env.DISCORD_CLIENT_SECRET as string,
      profile(profile: DiscordProfile) {
        if (profile.avatar === null) {
          const defaultAvatarNumber = parseInt(profile.discriminator) % 5;
          profile.image_url = `https://cdn.discordapp.com/embed/avatars/${defaultAvatarNumber}.png`;
        } else {
          const format = profile.avatar.startsWith("a_") ? "gif" : "png";
          profile.image_url = `https://cdn.discordapp.com/avatars/${profile.id}/${profile.avatar}.${format}`;
        }
        return {
          id: profile.id,
          name: profile.global_name ?? profile.username,
          email: profile.email,
          image: profile.image_url,
        };
      },
    }),
  ],
  callbacks: {
    async signIn({ user }) {
      const hasRequiredRole = await verifyUserRole(user.id);

      if (!hasRequiredRole) {
        return false;
      }

      return true;
    },
  },
  pages: {
    error: "/auth/error",
  },
  secret: process.env.NEXTAUTH_SECRET,
  ...(process.env.NEXTAUTH_URL && {
    url: process.env.NEXTAUTH_URL,
  }),
};