Added a route for user authentication

src/controllers/controllers.js

@@ -2,12 +2,22 @@ const userDataServices = require('../services/userData');
 
 const storeUsernameAndPassword = (req, res) => {
   userDataServices.storeUsernameAndPassword(req.body.username, req.body.password, (err, data) => {
-    if (err) res.status(503).send('Server error');
+    if (err) return res.status(503).send('Server error.');
 
     res.status(200).json(data);
   });
 };
 
+const authenticateUser = (req, res) => {
+  userDataServices.authenticateUser(req.body.username, req.body.password, (err, result) => {
+    if (err) return res.status(404).send('User not found.');
+
+    if (!result) return res.status(401).send('Authentication failed.');
+    res.status(200).send('User authenticated.');
+  });
+};
+
 module.exports = {
-  storeUsernameAndPassword
+  storeUsernameAndPassword,
+  authenticateUser
 };
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src/database/dataAccess.js

@@ -66,5 +66,5 @@ const getUser = (username, callback) => {
 module.exports = {
   initializeDatabase,
   addRow,
-  getUser,
+  getUser
 };
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src/index.js

@@ -19,5 +19,5 @@ const initializeDatabase = () => {
   dataAccess.initializeDatabase();
 };
 
-//initializeDatabase();
+initializeDatabase();
 startServer();
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src/requests/getUserAuthentication.rest

+get http://localhost:8000/api/v1/userData
+content-type: application/json
+
+{
+  "username": "Superuser",
+  "password": "StrongPassword"
+}
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src/routes/routes.js

@@ -4,5 +4,6 @@ const router = express.Router();
 const controllers = require('../controllers/controllers');
 
 router.post('/api/v1/userData', controllers.storeUsernameAndPassword);
+router.get('/api/v1/userData', controllers.authenticateUser);
 
 module.exports = router;
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