Zipline-Android-App/hooks/useAuth.ts

import { isAuthenticated } from "@/functions/zipline/auth";
import type { APIUser } from "@/types/zipline";
import { useFocusEffect, useRouter } from "expo-router";
import { roles } from "@/constants/auth";

export const useAuth = (minimumRole: APIUser["role"] = "USER") => {
    const router = useRouter()
    const minimumPosition = roles[minimumRole];

    useFocusEffect(() => {
        (async () => {
            const authenticated = await isAuthenticated();

            if (!authenticated) return router.replace("/login");
            
            const userPosition = roles[authenticated];

            if (userPosition < minimumPosition) return router.replace("/")
        })();
    });
}