feat(auth): added in a rolling token

frontend/src/hooks/useSession.ts

@@ -0,0 +1,49 @@
+import {useQuery} from "@tanstack/react-query";
+import {useSessionStore} from "../lib/store/sessionStore";
+import {useEffect} from "react";
+
+const fetchSession = async () => {
+    const token = localStorage.getItem("auth_token");
+
+    if (!token) {
+        throw new Error("No token found");
+    }
+
+    const res = await fetch("/api/auth/session", {
+        headers: {
+            "Content-Type": "application/json",
+            Authorization: `Bearer ${token}`,
+        },
+    });
+    // console.log(res);
+    if (!res.ok) {
+        throw new Error("Session not found");
+    }
+
+    return res.json();
+};
+
+export const useSession = () => {
+    const {setSession, clearSession, token} = useSessionStore();
+
+    // Fetch session only if token is available
+    const {data, status, error} = useQuery({
+        queryKey: ["session"],
+        queryFn: fetchSession,
+        enabled: !!token, // Prevents query if token is null
+        staleTime: 60 * 1000,
+        gcTime: 10 * 60 * 1000, // 10 mins
+        refetchOnWindowFocus: true,
+        //refetchInterval: 1000 * 60 * 2, // Auto-refetch every 2 minutes
+    });
+    useEffect(() => {
+        if (data) {
+            setSession(data.data.user, data.data.token);
+        }
+        if (error) {
+            clearSession();
+        }
+    }, [data, error]);
+
+    return {session: data && token ? {user: data.user, token: data.token} : null, status, error};
+};