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import { atom, useSetAtom } from "jotai";
import { atomWithStorage } from "jotai/utils";
import { useEffect } from "react";
import { useLocation } from "wouter";
import { apiClient, type User } from "../api/client";
// userAtom is the single source of truth for auth state. Persisted to
// localStorage so that the authenticated user survives page reloads alongside
// the tokens in apiClient's token storage.
export const userAtom = atomWithStorage<User | null>("kioku_user", null);
export const authLoadingAtom = atom<boolean>(true);
export const isAuthenticatedAtom = atom<boolean>(
(get) => get(userAtom) !== null,
);
// Action atom - login
export const loginAtom = atom(
null,
async (
_get,
set,
{ username, password }: { username: string; password: string },
) => {
const response = await apiClient.login(username, password);
set(userAtom, response.user);
},
);
// Action atom - logout
export const logoutAtom = atom(null, (_get, set) => {
apiClient.logout();
set(userAtom, null);
});
// Hook to initialize auth state and subscribe to session expiration
export function useAuthInit() {
const setAuthLoading = useSetAtom(authLoadingAtom);
const setUser = useSetAtom(userAtom);
const [, navigate] = useLocation();
useEffect(() => {
setAuthLoading(false);
// Subscribe to session expired events from the API client
const unsubscribe = apiClient.onSessionExpired(() => {
apiClient.logout();
setUser(null);
navigate("/login", { replace: true });
});
return unsubscribe;
}, [setAuthLoading, setUser, navigate]);
}
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