fix: auth flow bug on joining course

apps/dashboard/src/lib/utils/store/user.ts

@@ -1,21 +1,15 @@
 import { writable } from 'svelte/store';
 import type { User } from '@supabase/supabase-js';
 
-export const user = writable<{
+interface UserStore {
   openAuthModal: boolean;
   fetchingUser: boolean;
   isLoggedIn: boolean;
   currentSession: User | undefined;
   expiresAt: number;
-}>({
-  openAuthModal: false,
-  fetchingUser: false,
-  isLoggedIn: false,
-  currentSession: undefined,
-  expiresAt: 0
-});
+}
 
-export const profile = writable<{
+interface ProfileStore {
   id: string | undefined;
   fullname: string;
   avatar_url: string;
@@ -27,7 +21,17 @@ export const profile = writable<{
   goal: string;
   source: string;
   telegram_chat_id: number | null;
-}>({
+}
+
+export const defaultUserState: UserStore = {
+  openAuthModal: false,
+  fetchingUser: false,
+  isLoggedIn: false,
+  currentSession: undefined,
+  expiresAt: 0
+};
+
+export const defaultProfileState: ProfileStore = {
   id: undefined,
   fullname: '',
   avatar_url: 'https://pbs.twimg.com/profile_images/1416443682157473795/dGtFbtht_normal.jpg',
@@ -38,4 +42,8 @@ export const profile = writable<{
   goal: '',
   source: '',
   telegram_chat_id: null
-});
+};
+
+export const user = writable<UserStore>(defaultUserState);
+
+export const profile = writable<ProfileStore>(defaultProfileState);