API-9: PartyPlaner Login endpoint (#5)

Co-authored-by: Patrick Müller <patrick@mueller-patrick.tech>
Reviewed-on: #5
Co-authored-by: Patrick Müller <patrick@plutodev.de>
Co-committed-by: Patrick Müller <patrick@plutodev.de>

src/models/partyplaner/login/Login.router.ts

@@ -0,0 +1,51 @@
+/**
+ * Required External Modules and Interfaces
+ */
+import express, {Request, Response} from 'express';
+import * as UserService from '../userService/user.service';
+import logger from '../../../middleware/logger';
+
+/**
+ * Router Definition
+ */
+export const loginRouter = express.Router();
+
+loginRouter.post('/:isDevCall', async (req: Request, res: Response) => {
+    try {
+        let username: string = '';
+        let email: string = '';
+        let firstName: string = '';
+        let lastName: string = '';
+        let password: string = '';
+        let useDev: boolean = (req.params.isDevCall ?? '') === 'dev'; // TBD
+
+        // API accepts both JSON in body and HTTP parameters
+        if (req.headers['content-type'] === 'application/json') {
+            username = req.body.username;
+            email = req.body.email;
+            password = req.body.password;
+        } else if (req.headers['content-type'] === 'application/x-www-form-urlencoded') {
+            username = (req.query.username ?? '').toString();
+            email = (req.query.email ?? '').toString();
+            password = (req.query.password ?? '').toString();
+        }
+        let userIP = req.socket.remoteAddress ?? '';
+        let deviceInfo = req.headers['user-agent'] ?? '';
+
+        if ((username === '' && email === '') || password === '') {
+            res.status(400).send({
+                'status': 'WRONG_PARAMS',
+                'message': 'Missing or wrong parameters'
+            });
+            return;
+        }
+
+        // Check password and create session
+        let session = await UserService.loginUser(useDev, username, email, password, userIP, deviceInfo);
+
+        res.status(200).send(session);
+    } catch (e) {
+        logger.error('Error handling a request: ' + e.message);
+        res.status(500).send({'message': 'Internal Server Error. Try again later.'});
+    }
+});