web: use param ?redirect= with auth redirection and switch to a boolean check for /api/session/validate

web/src/app/_components/webpage.tsx

@@ -6,25 +6,19 @@ import { useEffect } from "react";
 import Header from "./header";
 
 async function login_check() {
-	try {
 	const response = await fetch("/api/session/validate")
 	if (response.ok) {
 		const logged_in = await response.json()
-			if (logged_in.code === 500) {
+		if (!logged_in) {
-				redirect("https://auth.staging.strafes.net/")
+			redirect("https://auth.staging.strafes.net/oauth2/login?redirect=" + window.location.href)
 		}
 	} else {
 		console.error("No response from /api/session/validate")
 	}
-	} catch (error) {
-		console.error("Error getting login status:", error)
-	}
 }
 
 export default function Webpage({children}: Readonly<{children?: React.ReactNode}>) {
-	useEffect(() => {
+	useEffect(() => { login_check() }, [])
-		login_check()
-	}, [])
 
 	return <>
 		<Header/>