feat: restructure routing and authentication for hidden layout and user login

frontend/src/utils/auth.ts

@@ -1,29 +1,33 @@
 import { API_BASE } from "../config/api.config";
 import Cookies from "js-cookie";
-import { useTranslation } from "react-i18next";
+import type { TFunction } from "i18next";
 import { toast } from "react-toastify";
-import { redirect } from "@tanstack/react-router";
-
-const { t } = useTranslation();
 
 export async function isAuthenticated() {
-  const result = await fetch(`${API_BASE}/users/verify-token`, {
-    method: "POST",
-    headers: {
-      Authorization: `Bearer ${Cookies.get("token") || ""}`,
-      "Content-Type": "application/json",
-      Accept: "application/json",
-    },
-  });
+  if (Cookies.get("token")) {
+    const result = await fetch(`${API_BASE}/users/verify-token`, {
+      method: "POST",
+      headers: {
+        Authorization: `Bearer ${Cookies.get("token") || ""}`,
+        "Content-Type": "application/json",
+        Accept: "application/json",
+      },
+    });
 
-  if (result.status === 200) {
-    return true;
+    if (result.status === 200) {
+      return true;
+    }
   }
 
+  Cookies.remove("token");
   return false;
 }
 
-export async function signInUser(username: string, password: string) {
+export async function signInUser(
+  username: string,
+  password: string,
+  t: TFunction,
+) {
   const result = await fetch(`${API_BASE}/users/login`, {
     method: "POST",
     headers: {
@@ -35,21 +39,19 @@ export async function signInUser(username: string, password: string) {
   });
 
   const response = await result.json();
+  console.log(response);
 
   if (result.status === 202) {
-    Cookies.set("token", response.token);
-    return true;
+    Cookies.set("token", response.data.token);
+    return { ok: true as const };
   }
 
-  if (result.status !== 202) {
-    Cookies.remove("token");
-    toast.error(t(response.code));
-  }
+  Cookies.remove("token");
+  toast.error(t(response.code));
+  return { ok: false as const };
 }
 
 export function signOutUser() {
   Cookies.remove("token");
-  throw redirect({
-    to: "/login",
-  });
+  return { ok: true as const };
 }

frontend/src/utils/i18n/locales/de/de.json

@@ -0,0 +1,6 @@
+{
+    "username": "Benutzername",
+    "password": "Passwort",
+    "eu001": "Falscher Benutzername oder Passwort!",
+    "login": "Login"
+}

frontend/src/utils/i18n/locales/en/en.json

@@ -0,0 +1,6 @@
+{
+    "username": "Username",
+    "password": "Password",
+    "eu001": "Wrong username or password!",
+    "login": "Login"
+}