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import type { Adapter } from "next-auth/adapters";
import { DrizzleAdapter } from "@auth/drizzle-adapter";
import { and, count, eq } from "drizzle-orm";
import NextAuth, {
DefaultSession,
getServerSession,
NextAuthOptions,
} from "next-auth";
import CredentialsProvider from "next-auth/providers/credentials";
import { Provider } from "next-auth/providers/index";
import requestIp from "request-ip";
import { db } from "@karakeep/db";
import {
accounts,
sessions,
users,
verificationTokens,
} from "@karakeep/db/schema";
import serverConfig from "@karakeep/shared/config";
import { logAuthenticationError, validatePassword } from "@karakeep/trpc/auth";
type UserRole = "admin" | "user";
declare module "next-auth/jwt" {
export interface JWT {
user: {
id: string;
role: UserRole;
} & DefaultSession["user"];
}
}
declare module "next-auth" {
/**
* Returned by `useSession`, `getSession` and received as a prop on the `SessionProvider` React Context
*/
export interface Session {
user: {
id: string;
role: UserRole;
} & DefaultSession["user"];
}
export interface DefaultUser {
role: UserRole | null;
}
}
/**
* Returns true if the user table is empty, which indicates that this user is going to be
* the first one. This can be racy if multiple users are created at the same time, but
* that should be fine.
*/
async function isFirstUser(): Promise<boolean> {
const [{ count: userCount }] = await db
.select({ count: count() })
.from(users);
return userCount == 0;
}
/**
* Returns true if the user is an admin
*/
async function isAdmin(email: string): Promise<boolean> {
const res = await db.query.users.findFirst({
columns: { role: true },
where: eq(users.email, email),
});
return res?.role == "admin";
}
const providers: Provider[] = [
CredentialsProvider({
// The name to display on the sign in form (e.g. "Sign in with...")
name: "Credentials",
credentials: {
email: { label: "Email", type: "email", placeholder: "Email" },
password: { label: "Password", type: "password" },
},
async authorize(credentials, req) {
if (!credentials) {
return null;
}
try {
return await validatePassword(
credentials?.email,
credentials?.password,
);
} catch (e) {
const error = e as Error;
logAuthenticationError(
credentials?.email,
error.message,
requestIp.getClientIp({ headers: req.headers }),
);
return null;
}
},
}),
];
const oauth = serverConfig.auth.oauth;
if (oauth.wellKnownUrl) {
providers.push({
id: "custom",
name: oauth.name,
type: "oauth",
wellKnown: oauth.wellKnownUrl,
authorization: { params: { scope: oauth.scope } },
clientId: oauth.clientId,
clientSecret: oauth.clientSecret,
allowDangerousEmailAccountLinking: oauth.allowDangerousEmailAccountLinking,
idToken: true,
checks: ["pkce", "state"],
httpOptions: {
timeout: oauth.timeout,
},
async profile(profile: Record<string, string>) {
const [admin, firstUser] = await Promise.all([
isAdmin(profile.email),
isFirstUser(),
]);
return {
id: profile.sub,
name: profile.name || profile.email,
email: profile.email,
image: profile.picture,
role: admin || firstUser ? "admin" : "user",
};
},
});
}
export const authOptions: NextAuthOptions = {
// https://github.com/nextauthjs/next-auth/issues/9493
adapter: DrizzleAdapter(db, {
usersTable: users,
accountsTable: accounts,
sessionsTable: sessions,
verificationTokensTable: verificationTokens,
}) as Adapter,
providers: providers,
session: {
strategy: "jwt",
},
pages: {
signIn: "/signin",
signOut: "/signin",
error: "/signin",
newUser: "/signin",
},
callbacks: {
async signIn({ credentials, profile }) {
if (credentials) {
return true;
}
if (!profile?.email) {
throw new Error("No profile");
}
const [{ count: userCount }] = await db
.select({ count: count() })
.from(users)
.where(and(eq(users.email, profile.email)));
// If it's a new user and signups are disabled, fail the sign in
if (userCount === 0 && serverConfig.auth.disableSignups) {
throw new Error("Signups are disabled in server config");
}
return true;
},
async jwt({ token, user }) {
if (user) {
token.user = {
id: user.id,
name: user.name,
email: user.email,
image: user.image,
role: user.role ?? "user",
};
}
return token;
},
async session({ session, token }) {
session.user = { ...token.user };
return session;
},
},
};
export const authHandler = NextAuth(authOptions);
export const getServerAuthSession = () => getServerSession(authOptions);
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