Add user data synchronization and database IPC handlers

- Introduce `db:user:sync` to synchronize user data with the local database during initialization.
- Add `db:user:info` and `db:user:update` IPC handlers for fetching and updating user information.
- Update `User` model and repository to support extended user fields and improved structure.
- Dynamically import user models in main process to avoid circular dependencies.
- Refactor database initialization in the app to include user sync logic with error handling.

app/page.tsx

@@ -226,7 +226,21 @@ function ScribeContent() {
                         const dbInitialized = await initializeDatabase(user.id);
                         if (dbInitialized) {
                             console.log('Database initialized successfully');
-                            // TODO: Sync initial des données du serveur vers la DB locale
+
+                            // Sync user to local DB (only if not exists)
+                            try {
+                                await window.electron.invoke('db:user:sync', {
+                                    userId: user.id,
+                                    firstName: user.name,
+                                    lastName: user.lastName,
+                                    username: user.username,
+                                    email: user.email
+                                });
+                                console.log('User synced to local DB');
+                            } catch (syncError) {
+                                console.error('Failed to sync user to local DB:', syncError);
+                                // Non-blocking error, continue anyway
+                            }
                         }
                     } catch (error) {
                         console.error('Failed to initialize database:', error);

electron/database/models/User.ts

@@ -15,6 +15,26 @@ export interface GuideTour {
     [key: string]: boolean;
 }
 
+interface BookSummary {
+    bookId: string;
+    title: string;
+    subTitle?: string;
+}
+
+export interface UserInfoResponse {
+    id: string;
+    name: string;
+    lastName: string;
+    username: string;
+    email: string;
+    accountVerified: boolean;
+    authorName: string;
+    groupId: number;
+    termsAccepted: boolean;
+    guideTour: any[];
+    books: BookSummary[];
+}
+
 export default class User{
 
     private readonly id:string;
@@ -52,7 +72,7 @@ export default class User{
         this.termsAccepted = data.term_accepted === 1;
     }
     
-    public static async returnUserInfos(userId: string) {
+    public static async returnUserInfos(userId: string):Promise<UserInfoResponse> {
         const user: User = new User(userId);
         await user.getUserInfos();
         const books: BookProps[] = await Book.getBooks(userId);
@@ -68,7 +88,7 @@ export default class User{
             groupId: user.getGroupId(),
             termsAccepted: user.isTermsAccepted(),
             guideTour: guideTour,
-            books: books.map((book: BookProps) => {
+            books: books.map((book: BookProps):BookSummary => {
                 return {
                     bookId: book.id,
                     title: book.title,

electron/database/repositories/user.repository.ts

@@ -15,7 +15,6 @@ export interface UserInfosQueryResponse extends Record<string, SQLiteValue> {
     writing_level: number,
     rite_points: number,
     user_group: number,
-    credits_balance: number,
 }
 
 export interface CredentialResponse {
@@ -53,10 +52,23 @@ export default class UserRepo {
         try {
             const db: Database = System.getDb();
             const query = `INSERT INTO erit_users (user_id, first_name, last_name, username, email, origin_email,
-                                                   origin_username, term_accepted,
-                                                   account_verified)
-                           VALUES (?, ?, ?, ?, ?, ?, ?, 0, 1)`;
-            const values: (string | null | number)[] = [uuId, firstName, lastName, username, email, originEmail, originUsername];
+                                                   origin_username, plateform, term_accepted,
+                                                   account_verified, user_meta, reg_date)
+                           VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`;
+            const values: (string | null | number)[] = [
+                uuId,
+                firstName,
+                lastName,
+                username,
+                email,
+                originEmail,
+                originUsername,
+                'desktop', // plateform
+                0, // term_accepted
+                1, // account_verified
+                '{}', // user_meta (JSON empty object)
+                Date.now() // reg_date (current timestamp)
+            ];
             result = db.run(query, values);
         } catch (e: unknown) {
             if (e instanceof Error) {
@@ -78,7 +90,7 @@ export default class UserRepo {
         let result;
         try {
             const db: Database = System.getDb();
-            result = db.get('SELECT `first_name`, `last_name`, `username`, `email`, `plateform`, `term_accepted`, `account_verified`, user_meta, author_name, erite_points AS rite_points, user_group, credits_balance  FROM `erit_users` AS users LEFT JOIN user_preferences AS preference ON users.user_id=preference.user_id WHERE users.user_id=?', [userId]);
+            result = db.get('SELECT `first_name`, `last_name`, `username`, `email`, `plateform`, `term_accepted`, `account_verified`, user_meta, author_name, erite_points AS rite_points, user_group FROM `erit_users` WHERE user_id=?', [userId]);
         } catch (e: unknown) {
             if (e instanceof Error) {
                 console.error(`DB Error: ${e.message}`);

electron/ipc/user.ipc.ts

@@ -0,0 +1,26 @@
+import { ipcMain } from 'electron';
+import { createHandler } from '../database/LocalSystem.js';
+import User, {UserInfoResponse} from '../database/models/User.js';
+
+interface UpdateUserData {
+    firstName: string;
+    lastName: string;
+    username: string;
+    email: string;
+    authorName?: string;
+}
+
+// GET /user/info - Get user info from local DB
+ipcMain.handle('db:user:info', createHandler<void, UserInfoResponse>(
+    async function(userId: string, _body: void, _lang: 'fr' | 'en'):Promise<UserInfoResponse> {
+        return await User.returnUserInfos(userId);
+    }
+));
+
+// PUT /user/update - Update user info in local DB
+ipcMain.handle('db:user:update', createHandler<UpdateUserData, boolean>(
+    async function(userId: string, data: UpdateUserData, lang: 'fr' | 'en'):Promise<boolean> {
+        const userKey = '';
+        return await User.updateUserInfos(userKey, userId, data.firstName, data.lastName, data.username, data.email, data.authorName, lang);
+    }
+));

electron/main.ts

@@ -8,6 +8,7 @@ import { getDatabaseService } from './database/database.service.js';
 
 // Import IPC handlers
 import './ipc/book.ipc.js';
+import './ipc/user.ipc.js';
 
 // Fix pour __dirname en ES modules
 const __filename = fileURLToPath(import.meta.url);
@@ -169,6 +170,52 @@ ipcMain.on('logout', () => {
   createLoginWindow();
 });
 
+// ========== USER SYNC (PRE-AUTHENTICATION) ==========
+
+interface SyncUserData {
+  userId: string;
+  firstName: string;
+  lastName: string;
+  username: string;
+  email: string;
+}
+
+ipcMain.handle('db:user:sync', async (_event, data: SyncUserData): Promise<boolean> => {
+  try {
+    // Import User models dynamically to avoid circular dependencies
+    const { default: User } = await import('./database/models/User.js');
+    const { default: UserRepo } = await import('./database/repositories/user.repository.js');
+
+    const lang: 'fr' | 'en' = 'fr';
+
+    // Check if user already exists in local DB
+    try {
+      UserRepo.fetchUserInfos(data.userId, lang);
+      // User exists, no need to sync
+      console.log(`[DB] User ${data.userId} already exists in local DB, skipping sync`);
+      return true;
+    } catch (error) {
+      // User doesn't exist, create it
+      console.log(`[DB] User ${data.userId} not found, creating in local DB`);
+
+      await User.addUser(
+        data.userId,
+        data.firstName,
+        data.lastName,
+        data.username,
+        data.email,
+        '', // Password not needed for local DB
+        lang
+      );
+      console.log(`[DB] User ${data.userId} synced successfully`);
+      return true;
+    }
+  } catch (error) {
+    console.error('[DB] Failed to sync user:', error);
+    throw error;
+  }
+});
+
 // ========== DATABASE IPC HANDLERS ==========
 
 /**