API-23: Refactoring for better architecture (#12)

Endpoints are separated into distinct packages and interfaces are extracted into files

Co-authored-by: Patrick Müller <patrick@mueller-patrick.tech>
Reviewed-on: #12
Co-authored-by: Patrick Müller <patrick@plutodev.de>
Co-committed-by: Patrick Müller <patrick@plutodev.de>

src/models/partyplaner/session/Session.router.ts

@@ -0,0 +1,44 @@
+/**
+ * Required External Modules and Interfaces
+ */
+import express, {Request, Response} from 'express';
+import * as SessionService from './session.service';
+import * as UserService from '../user/user.service';
+import logger from '../../../middleware/logger';
+
+/**
+ * Router Definition
+ */
+export const sessionRouter = express.Router();
+
+sessionRouter.get('/:isDevCall', async (req: Request, res: Response) => {
+    try {
+        let userId = (req.query.userId ?? '').toString();
+        let sessionId = (req.query.sessionId ?? '').toString();
+        let sessionKey = (req.query.sessionKey ?? '').toString();
+        let useDev: boolean = (req.params.isDevCall ?? '') === 'dev'; // TBD
+
+        if (userId === '' || sessionId === '' || sessionKey === '') {
+            res.status(400).send({
+                'status': 'WRONG_PARAMS',
+                'message': 'Missing or wrong parameters'
+            });
+            return;
+        }
+
+        if (!await UserService.checkSession(useDev, userId, sessionId, sessionKey)) {
+            res.status(403).send({
+                'status': 'INVALID_SESSION',
+                'message': 'The user or session could not be found or the session is invalid'
+            });
+            return;
+        }
+
+        let data = await SessionService.getSessionData(useDev, userId);
+
+        res.status(200).send(data);
+    } catch (e) {
+        logger.error('Error handling a request: ' + e.message);
+        res.status(500).send({'message': 'Internal Server Error. Try again later.'});
+    }
+});