import { useEffect, useMemo, useState } from 'react';

import { loadAuthorizedSession } from './auth-client.js';
import { loadingSessionState, SESSION_PHASES } from './session-policy.js';

export function useAuthorizedSession(allowedRoles = [], { redirectOnUnauthorized = true } = {}) {
    const roleKey = useMemo(
        () => [...allowedRoles].sort().join('|'),
        [allowedRoles]
    );
    const normalizedRoles = useMemo(
        () => roleKey ? roleKey.split('|') : [],
        [roleKey]
    );
    const [state, setState] = useState(loadingSessionState);

    useEffect(() => {
        let active = true;
        setState(loadingSessionState());

        void loadAuthorizedSession(normalizedRoles).then(result => {
            if (!active) return;
            setState(result);
            if (redirectOnUnauthorized && result.phase === SESSION_PHASES.unauthorized) {
                window.location.replace('/');
            }
        });

        return () => {
            active = false;
        };
    }, [normalizedRoles, redirectOnUnauthorized]);

    return state;
}