Added modified version after migrating

server.js

@@ -1,15 +1,22 @@
 const express = require('express');
+const axios = require('axios');
 const path = require('path');
 const fs = require('fs');
 const app = express();
 const port = 80;
 
+const url = 'http://transport.tallinn.ee/gps.txt';
+const fetchInterval = 10 * 1000; // 10 seconds
+const retentionPeriod = 7 * 24 * 60 * 60 * 1000; // 7 days in ms
+const gpsFilePath = 'gps/';
+const logFilePath = 'logs/';
+
 app.use(express.static(path.join(__dirname, 'public')));
 app.use('/gps', express.static(path.join(__dirname, 'gps')));  // Serve static files from the gps directory
 
 app.get('/gps-files', (req, res) => {
-  const gpsDir = path.join(__dirname, 'gps');
-  fs.readdir(gpsDir, (err, files) => {
+  const gpsFilePath = path.join(__dirname, 'gps');
+  fs.readdir(gpsFilePath, (err, files) => {
     if (err) return res.status(500).send(err.message);
     const gpsFiles = files
       .filter(file => file.startsWith('gps-') && file.endsWith('.txt'))
@@ -24,3 +31,65 @@ app.get('/gps-files', (req, res) => {
 app.listen(port, () => {
   console.log(`Server running at http://localhost:${port}`);
 });
+
+if (!fs.existsSync(gpsFilePath)) fs.mkdirSync(gpsFilePath);
+
+function writeToLog(filename, data) {
+    fs.appendFileSync(filename, data);
+}
+
+function deleteOldFiles() {
+    const now = Date.now();
+    fs.readdirSync(gpsFilePath).forEach(file => {
+        const filePath = path.join(gpsFilePath, file);
+        const stats = fs.statSync(filePath);
+        if (now - stats.mtimeMs > retentionPeriod) {
+            fs.unlinkSync(filePath);
+        }
+    });
+}
+
+async function fetchAndSaveData() {
+    try {
+        console.log(`Fetch started`);
+        const date = new Date();
+        const timestamp = `gps-${date.getFullYear()}-${String(date.getMonth()+1).padStart(2,'0')}-${String(date.getDate()).padStart(2,'0')}-${String(date.getHours()).padStart(2,'0')}_${String(date.getMinutes()).padStart(2,'0')}_${String(date.getSeconds()).padStart(2,'0')}.txt`;
+        const filePath = path.join(gpsFilePath, timestamp);
+
+        const logData = `${date} - Fetching new data...\n`;
+        writeToLog('fetch_log.txt', logData);
+
+        const response = await axios.get(url);
+        if (response.status === 200) {
+            fs.writeFileSync(filePath, response.data, 'utf8');
+            console.log("Fetch completed.");
+            writeToLog('fetch_log.txt', `${date} - Fetching completed!\n`);
+        } else {
+            writeToLog('errors_log.txt', `${date} - Fetching failed. Got: ${response.status}\n`);
+        }
+
+        deleteOldFiles();
+    } catch (error) {
+        const date = new Date();
+        writeToLog('errors_log.txt', `${date} - Error fetching data: ${error.message}\n`);
+    }
+}
+
+function writeToLog(logfile, logdata) {
+    const realLogFile = path.join(logFilePath, logfile);
+    const dir = path.dirname(realLogFile);
+    if (!fs.existsSync(dir)) {
+        fs.mkdirSync(dir, { recursive: true });
+    }
+    if (!fs.existsSync(realLogFile)) {
+        fs.writeFileSync(realLogFile, '', 'utf8');
+    }
+    fs.appendFile(realLogFile, logdata, 'utf8', (err) => {
+        if (err) {
+            console.error('Error writing to file:', err);
+        }
+    });
+}
+
+setInterval(fetchAndSaveData, fetchInterval);
+fetchAndSaveData();