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use-user.tsx
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use-user.tsx
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import React, { ReactElement, useState, useEffect, useCallback, useContext, createContext } from 'react';
import ConfigProvider, { ConfigContext } from './use-config';
/**
* The user claims returned from the {@link useUser} hook.
*
* @category Client
*/
export interface UserProfile {
email?: string | null;
email_verified?: boolean | null;
name?: string | null;
nickname?: string | null;
picture?: string | null;
sub?: string | null;
updated_at?: string | null;
[key: string]: unknown; // Any custom claim which could be in the profile
}
/**
* The user context returned from the {@link useUser} hook.
*
* @category Client
*/
export type UserContext = {
user?: UserProfile;
error?: Error;
isLoading: boolean;
checkSession: () => Promise<void>;
};
/**
* Configure the {@link UserProvider} component.
*
* If you have any server-side rendered pages (eg. using `getServerSideProps`), you should get the user from the server
* side session and pass it to the `<UserProvider>` component via `pageProps` - this will refill the {@link useUser}
* hook with the {@link UserProfile} object. eg
*
* ```js
* // pages/_app.js
* import React from 'react';
* import { UserProvider } from '@auth0/nextjs-auth0';
*
* export default function App({ Component, pageProps }) {
* // If you've used `withPageAuthRequired`, pageProps.user can pre-populate the hook
* // if you haven't used `withPageAuthRequired`, pageProps.user is undefined so the hook
* // fetches the user from the API route
* const { user } = pageProps;
*
* return (
* <UserProvider user={user}>
* <Component {...pageProps} />
* </UserProvider>
* );
* }
* ```
*
* If you have used a custom url for your {@link HandleProfile} API Route handler (the default is `/api/auth/me`) then
* you should specify it here in the `profileUrl` option.
*
* @category Client
*/
export type UserProviderProps = React.PropsWithChildren<{ user?: UserProfile; profileUrl?: string } & ConfigContext>;
/**
* @ignore
*/
const missingUserProvider = 'You forgot to wrap your app in <UserProvider>';
/**
* @ignore
*/
export const UserContext = createContext<UserContext>({
get user(): never {
throw new Error(missingUserProvider);
},
get error(): never {
throw new Error(missingUserProvider);
},
get isLoading(): never {
throw new Error(missingUserProvider);
},
checkSession: (): never => {
throw new Error(missingUserProvider);
}
});
/**
* The `useUser` hook, which will get you the {@link UserProfile} object from the server-side session by requesting it
* from the {@link HandleProfile} API Route handler.
*
* ```js
* // pages/profile.js
* import Link from 'next/link';
* import { useUser } from '@auth0/nextjs-auth0';
*
* export default function Profile() {
* const { user, error, isLoading } = useUser();
*
* if (isLoading) return <div>Loading...</div>;
* if (error) return <div>{error.message}</div>;
* if (!user) return <Link href="/api/auth/login"><a>Login</a></Link>;
* return <div>Hello {user.name}, <Link href="/api/auth/logout"><a>Logout</a></Link></div>;
* }
* ```
*
* @category Client
*/
export type UseUser = () => UserContext;
/**
* @ignore
*/
export const useUser: UseUser = () => useContext<UserContext>(UserContext);
/**
* To use the {@link useUser} hook. You must wrap your application in a `<UserProvider>` component.
*
* @category Client
*/
export type UserProvider = (props: UserProviderProps) => ReactElement<UserContext>;
/**
* @ignore
*/
type UserProviderState = {
user?: UserProfile;
error?: Error;
isLoading: boolean;
};
export default ({
children,
user: initialUser,
profileUrl = process.env.NEXT_PUBLIC_AUTH0_PROFILE || '/api/auth/me',
loginUrl
}: UserProviderProps): ReactElement<UserContext> => {
const [state, setState] = useState<UserProviderState>({ user: initialUser, isLoading: !initialUser });
const checkSession = useCallback(async (): Promise<void> => {
try {
const response = await fetch(profileUrl);
const user = response.ok ? await response.json() : undefined;
setState((previous) => ({ ...previous, user, error: undefined }));
} catch (_e) {
const error = new Error(`The request to ${profileUrl} failed`);
setState((previous) => ({ ...previous, user: undefined, error }));
}
}, [profileUrl]);
useEffect((): void => {
if (state.user) return;
(async (): Promise<void> => {
await checkSession();
setState((previous) => ({ ...previous, isLoading: false }));
})();
}, [state.user]);
const { user, error, isLoading } = state;
return (
<ConfigProvider loginUrl={loginUrl}>
<UserContext.Provider value={{ user, error, isLoading, checkSession }}>{children}</UserContext.Provider>
</ConfigProvider>
);
};