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|
import { Authenticator } from "remix-auth";
import { FormStrategy } from "remix-auth-form";
import { sessionStorage } from "./session.server";
import { jwtDecode } from "jwt-decode";
import type { Session } from "@remix-run/server-runtime";
export const authenticator = new Authenticator<string>(sessionStorage);
async function login(username: string, password: string): Promise<string> {
const res = await fetch(`http://api-server/api/login`, {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({ username, password }),
});
if (!res.ok) {
throw new Error("Invalid username or password");
}
const user = await res.json();
return user.token;
}
authenticator.use(
new FormStrategy(async ({ form }) => {
const username = String(form.get("username"));
const password = String(form.get("password"));
return await login(username, password);
}),
"default",
);
type JwtPayload = {
user_id: number;
username: string;
display_username: string;
icon_path: string | null;
is_admin: boolean;
};
export type User = {
userId: number;
username: string;
displayUsername: string;
iconPath: string | null;
isAdmin: boolean;
};
export async function isAuthenticated(
request: Request | Session,
options?: {
successRedirect?: never;
failureRedirect?: never;
headers?: never;
},
): Promise<User | null>;
export async function isAuthenticated(
request: Request | Session,
options: {
successRedirect: string;
failureRedirect?: never;
headers?: HeadersInit;
},
): Promise<null>;
export async function isAuthenticated(
request: Request | Session,
options: {
successRedirect?: never;
failureRedirect: string;
headers?: HeadersInit;
},
): Promise<User>;
export async function isAuthenticated(
request: Request | Session,
options: {
successRedirect: string;
failureRedirect: string;
headers?: HeadersInit;
},
): Promise<null>;
export async function isAuthenticated(
request: Request | Session,
options:
| {
successRedirect?: never;
failureRedirect?: never;
headers?: never;
}
| {
successRedirect: string;
failureRedirect?: never;
headers?: HeadersInit;
}
| {
successRedirect?: never;
failureRedirect: string;
headers?: HeadersInit;
}
| {
successRedirect: string;
failureRedirect: string;
headers?: HeadersInit;
} = {},
): Promise<User | null> {
let jwt;
// This function's signature should be compatible with `authenticator.isAuthenticated` but TypeScript does not infer it correctly.
const { successRedirect, failureRedirect, headers } = options;
if (successRedirect && failureRedirect) {
jwt = await authenticator.isAuthenticated(request, {
successRedirect,
failureRedirect,
headers,
});
} else if (!successRedirect && failureRedirect) {
jwt = await authenticator.isAuthenticated(request, {
failureRedirect,
headers,
});
} else if (successRedirect && !failureRedirect) {
jwt = await authenticator.isAuthenticated(request, {
successRedirect,
headers,
});
} else {
jwt = await authenticator.isAuthenticated(request);
}
if (!jwt) {
return null;
}
// TODO: runtime type check
const payload = jwtDecode<JwtPayload>(jwt);
return {
userId: payload.user_id,
username: payload.username,
displayUsername: payload.display_username,
iconPath: payload.icon_path,
isAdmin: payload.is_admin,
};
}
|
