feat: restructure starting with customizable port

app.js

@@ -0,0 +1,10 @@
+import request from 'supertest';
+import express from 'express';
+import fs from 'fs';
+import path from 'path';
+import server from './server.js';
+
+const port = process.env.NODE_PORT || 3000;
+server.listen(port, () => {
+    console.log(`Server started on port ${port}`);
+});

package.json

@@ -1,9 +1,9 @@
 {
   "name": "calendar-merger",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "type": "module",
   "scripts": {
-    "start": "node server.js",
+    "start": "node app.js",
     "test": "jest"
   },
   "dependencies": {

server.js

@@ -5,32 +5,31 @@ import axios from 'axios';
 import path from 'path';
 import icalGenerator from 'ical-generator';
 
-const app = express();
+const server = express();
-app.use(express.json());
+server.use(express.json());
 
 // Determine the merged calendars directory based on the environment
 const MERGED_CALENDARS_DIR = 'calendar';
 console.log(`Merged calendars directory: ${MERGED_CALENDARS_DIR} under ${process.cwd()}`);
-
 // Ensure the merged calendars directory exists
 fs.mkdirSync(MERGED_CALENDARS_DIR, { recursive: true });
 
-app.get('/script.js', (req, res) => {
+// FRONTEND
+server.get('/', (req, res) => {
+    res.sendFile('index.html', { root: '.' });
+});
+server.get('/script.js', (req, res) => {
     res.setHeader('Content-Type', 'application/javascript');
     res.sendFile('script.js', { root: '.' });
 });
 
-app.get('/', (req, res) => {
-    res.sendFile('index.html', { root: '.' });
-});
-
 // Function to sanitize the linkGroupName for use as a filename
 function sanitizeFilename(filename) {
     return filename.replace(/[<>:"/\\|?* ]/g, '_'); // Replace invalid characters with underscores
 }
 
 // Merge calendars endpoint
-app.post('/merge', async (req, res) => {
+server.post('/merge', async (req, res) => {
     const { linkGroupName, calendars } = req.body;
 
     try {
@@ -131,7 +130,7 @@ app.post('/merge', async (req, res) => {
 });
 
 // Serve the merged calendar file and refresh if older than an hour
-app.get('/calendar/:name', async (req, res) => {
+server.get('/calendar/:name', async (req, res) => {
     const calendarName = req.params.name;
     const icsFilePath = path.resolve(MERGED_CALENDARS_DIR, `${calendarName}.ics`);
     const jsonFilePath = path.resolve(MERGED_CALENDARS_DIR, `${calendarName}.json`);
@@ -238,13 +237,4 @@ function saveCalendarData(calendarId, linkGroupName, calendars) {
     }
 }
 
-// Start the server
+export default server;
-if (process.env.NODE_ENV !== 'test') {
-    const port = 3000;
-    app.listen(port, () => {
-        console.log(`Server started on port ${port}`);
-    });
-}
-
-
-export default app;