Persist learn progress per user

app/middleware/require-auth.ts

@@ -0,0 +1,21 @@
+import { defineNuxtRouteMiddleware, navigateTo } from '#app'
+import { useAuthStore } from '~/stores/auth'
+
+export default defineNuxtRouteMiddleware(async (to) => {
+  const auth = useAuthStore()
+
+  if (!auth.accessToken) {
+    await auth.tryRefresh().catch(() => false)
+  }
+
+  if (!auth.initialized) {
+    await auth.fetchUser().catch(() => null)
+  } else if (!auth.user) {
+    await auth.fetchUser().catch(() => null)
+  }
+
+  if (!auth.user) {
+    const redirect = encodeURIComponent(to.fullPath || '/')
+    return navigateTo(`/login?redirect=${redirect}`)
+  }
+})