Migration to Nuxt v4 file structure and dependencies update

app/types/auth.d.ts

@@ -0,0 +1,77 @@
+import type { ComputedRef, Ref } from 'vue';
+import type { SessionConfig } from 'h3'
+
+import 'vue-router';
+declare module 'vue-router'
+{
+    interface RouteMeta
+    {
+        requiresAuth?: boolean;
+        guestsGoesTo?: string;
+        usersGoesTo?: string;
+        rights?: string[];
+        validState?: boolean;
+    }
+}
+
+import '@nuxt/schema';
+declare module '@nuxt/schema'
+{
+    interface RuntimeConfig
+    {
+        session: SessionConfig;
+    }
+}
+
+export interface UserRawData {
+  id: number;
+  username: string;
+  email: string;
+  state: number;
+}
+
+export interface UserExtendedData {
+  signin: Date;
+  lastTimestamp: Date;
+}
+
+export type Permissions = { permissions: string[] };
+
+export type User = UserRawData & UserExtendedData & Permissions;
+
+export interface UserSession {
+  user?: User;
+  id?: string;
+}
+
+export interface UserSessionRequired extends UserSession {
+  user: User;
+  id: string;
+}
+
+export interface UserSessionComposable {
+  /**
+   * Computed indicating if the auth session is ready
+   */
+  ready: ComputedRef<boolean>
+  /**
+   * Computed indicating if the user is logged in.
+   */
+  loggedIn: ComputedRef<boolean>
+  /**
+   * The user object if logged in, null otherwise.
+   */
+  user: ComputedRef<User | null>
+  /**
+   * The session object.
+   */
+  session: Ref<UserSession>
+  /**
+   * Fetch the user session from the server.
+   */
+  fetch: () => Promise<boolean>
+  /**
+   * Clear the user session and remove the session cookie.
+   */
+  clear: () => Promise<void>
+}