🧹 Centralize backend logging

backend/src/routes/auth.ts

@@ -6,6 +6,7 @@ import express from 'express';
 import bcrypt from 'bcryptjs';
 import { PrismaClient } from '@prisma/client';
 import { generateToken } from '../middleware/auth';
+import * as logger from '../utils/logger';
 
 const router = express.Router();
 const prisma = new PrismaClient();
@@ -50,7 +51,7 @@ router.post('/register', async (req, res) => {
       token,
     });
   } catch (error) {
-    console.error('Registration error:', error);
+    logger.error('Registration error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });
@@ -91,7 +92,7 @@ router.post('/login', async (req, res) => {
       token,
     });
   } catch (error) {
-    console.error('Login error:', error);
+    logger.error('Login error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });

backend/src/routes/notes.ts

@@ -5,6 +5,7 @@
 import express from 'express';
 import { PrismaClient } from '@prisma/client';
 import { authenticateToken, AuthRequest } from '../middleware/auth';
+import * as logger from '../utils/logger';
 
 const router = express.Router();
 const prisma = new PrismaClient();
@@ -24,7 +25,7 @@ router.get('/', async (req: AuthRequest, res) => {
 
     res.json(notes);
   } catch (error) {
-    console.error('Get notes error:', error);
+    logger.error('Get notes error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });
@@ -48,7 +49,7 @@ router.post('/', async (req: AuthRequest, res) => {
 
     res.json(note);
   } catch (error) {
-    console.error('Create note error:', error);
+    logger.error('Create note error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });
@@ -78,7 +79,7 @@ router.put('/:id', async (req: AuthRequest, res) => {
 
     res.json(note);
   } catch (error) {
-    console.error('Update note error:', error);
+    logger.error('Update note error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });
@@ -104,7 +105,7 @@ router.delete('/:id', async (req: AuthRequest, res) => {
 
     res.status(204).send();
   } catch (error) {
-    console.error('Delete note error:', error);
+    logger.error('Delete note error:', error);
     res.status(500).json({ message: 'Internal server error' });
   }
 });

backend/src/server.ts

@@ -7,6 +7,7 @@ import express from 'express';
 import cors from 'cors';
 import authRoutes from './routes/auth';
 import notesRoutes from './routes/notes';
+import * as logger from './utils/logger';
 
 const app = express();
 const PORT = process.env.PORT || 3000;
@@ -25,6 +26,6 @@ app.get('/health', (req, res) => {
 });
 
 app.listen(PORT, () => {
-  console.log(`Server running on port ${PORT}`);
+  logger.info(`Server running on port ${PORT}`);
 });
 

backend/src/utils/logger.ts

@@ -0,0 +1,26 @@
+/**
+ * Centralized logger utility wrapping console methods
+ */
+
+export const info = (message: string, ...args: unknown[]) => {
+  console.log(message, ...args);
+};
+
+export const error = (message: string, ...args: unknown[]) => {
+  console.error(message, ...args);
+};
+
+export const warn = (message: string, ...args: unknown[]) => {
+  console.warn(message, ...args);
+};
+
+export const debug = (message: string, ...args: unknown[]) => {
+  console.debug(message, ...args);
+};
+
+export default {
+  info,
+  error,
+  warn,
+  debug,
+};