Set up part of matching service

Author: fans2619

.gitignore

@@ -6,3 +6,4 @@ node_modules/
 
 # PeerPrep
 .env
+/matching-service/dev.sqlite

matching-service/env.sample

@@ -0,0 +1,2 @@
+ENV=DEV
+PORT=8001

matching-service/index.js

@@ -1,17 +1,32 @@
 import express from 'express';
 import cors from 'cors';
-import { createServer } from 'http';
+import 'dotenv/config';
+import db from './model/repository.js';
+
+// const db = import('./model/repository.js');
 
 const app = express();
-app.use(express.urlencoded({ extended: true }))
-app.use(express.json())
-app.use(cors()) // config cors so that front-end can use
-app.options('*', cors())
+const port = process.env.PORT || 8001;
+
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+app.use(cors()); // config cors so that front-end can use
+app.options('*', cors()); // TODO: what's this?
 
-app.get('/', (req, res) => {
-    res.send('Hello World from matching-service');
+app.get('/api/matching', (req, res) => {
+  res.status(200).send('Hello World from matching-service');
 });
 
-const httpServer = createServer(app)
+try {
+  db.connection();
+} catch (error) {
+  console.log(error);
+}
+
+console.log('Calling app.listen()');
+
+const server = app.listen(port, () => {
+  console.log('Matching service server started on port ' + port);
+}); // TODO: socketio.listen(server)
 
-httpServer.listen(8001);
+console.log('app.listen() executed');

matching-service/model/repository.js

@@ -0,0 +1,14 @@
+import { Sequelize } from 'sequelize';
+
+const sequelize = new Sequelize('test-db', 'user', 'password', {
+  dialect: 'sqlite',
+  host: './dev.sqlite', // data are stored in the file
+});
+
+const connection = async () => {
+  sequelize.sync().then(() => {
+    console.log('Connected to DB');
+  });
+};
+
+export default { connection };

matching-service/package.json

@@ -16,6 +16,7 @@
     "nodemon": "^2.0.19"
   },
   "dependencies": {
+    "dotenv": "^16.0.2",
     "express": "^4.18.1",
     "sequelize": "^6.21.3",
     "socket.io": "^4.5.1",