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215
html/rechner/server.js
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215
html/rechner/server.js
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const express = require('express');
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const bodyParser = require('body-parser');
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const sqlite3 = require('sqlite3').verbose();
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const fs = require('fs');
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const path = require('path');
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const cron = require('node-cron');
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const app = express();
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const port = 3000;
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// Serve static files from the current directory
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app.use(express.static(__dirname));
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app.use(bodyParser.json());
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// Create backups directory if it doesn't exist
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const backupDir = path.join(__dirname, 'backups');
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if (!fs.existsSync(backupDir)) {
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fs.mkdirSync(backupDir, { recursive: true });
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}
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// Database setup
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const db = new sqlite3.Database('./rechner.db', (err) => {
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if (err) {
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console.error('Error opening database:', err.message);
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} else {
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console.log('Connected to the SQLite database.');
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// Create tables if they don't exist
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db.run(`CREATE TABLE IF NOT EXISTS coin_trackers (
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id TEXT PRIMARY KEY,
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data TEXT NOT NULL,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)`);
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}
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});
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// API route to save coin trackers
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app.post('/api/coinTrackers', (req, res) => {
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const data = req.body.data;
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if (!data) {
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return res.status(400).json({ error: 'No data provided' });
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}
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// Save data to database
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db.run('DELETE FROM coin_trackers', [], function(err) {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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const stmt = db.prepare('INSERT INTO coin_trackers (id, data) VALUES (?, ?)');
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data.forEach(tracker => {
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stmt.run(tracker.id, JSON.stringify(tracker));
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});
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stmt.finalize();
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res.json({ success: true, message: 'Data saved successfully' });
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});
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});
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// API route to get coin trackers
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app.get('/api/coinTrackers', (req, res) => {
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db.all('SELECT id, data FROM coin_trackers', [], (err, rows) => {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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const data = rows.map(row => JSON.parse(row.data));
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res.json({ data });
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});
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});
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// API route to create a backup
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app.get('/api/backup/create', (req, res) => {
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const name = req.query.name || `Backup_${new Date().toISOString()}`;
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const timestamp = Date.now();
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const fileName = `backup_${timestamp}_name_${name}.json`;
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const filePath = path.join(backupDir, fileName);
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// Get all data from database
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db.all('SELECT id, data FROM coin_trackers', [], (err, rows) => {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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const data = rows.map(row => JSON.parse(row.data));
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const backupData = {
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date: new Date().toISOString(),
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name: name,
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data: data
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};
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// Write backup file
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fs.writeFile(filePath, JSON.stringify(backupData, null, 2), (err) => {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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res.json({ success: true, message: 'Backup created successfully', file: fileName });
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});
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});
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});
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// API route to list backups
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app.get('/api/backup/list', (req, res) => {
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fs.readdir(backupDir, (err, files) => {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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const backups = [];
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// Process each file synchronously
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for (const file of files) {
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if (!file.startsWith('backup_') || !file.endsWith('.json')) continue;
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const filePath = path.join(backupDir, file);
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const stats = fs.statSync(filePath);
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let name = file;
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if (file.includes('_name_')) {
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name = file.split('_name_')[1].split('.json')[0];
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}
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const timestamp = file.split('_')[1];
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backups.push({
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file: file,
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date: new Date(parseInt(timestamp)).toISOString(),
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size: stats.size,
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name: name
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});
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}
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res.json({ backups });
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});
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});
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// API route to restore from a backup
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app.get('/api/backup/restore/:file', (req, res) => {
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const fileName = req.params.file;
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const filePath = path.join(backupDir, fileName);
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if (!fs.existsSync(filePath)) {
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return res.status(404).json({ error: 'Backup file not found' });
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}
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fs.readFile(filePath, 'utf8', (err, data) => {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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try {
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const backupData = JSON.parse(data);
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// Clear existing data
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db.run('DELETE FROM coin_trackers', [], function(err) {
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if (err) {
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return res.status(500).json({ error: err.message });
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}
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// Insert backup data
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if (backupData.data && Array.isArray(backupData.data)) {
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const stmt = db.prepare('INSERT INTO coin_trackers (id, data) VALUES (?, ?)');
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backupData.data.forEach(tracker => {
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stmt.run(tracker.id, JSON.stringify(tracker));
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});
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stmt.finalize();
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}
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res.json({ success: true, message: 'Backup restored successfully' });
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});
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} catch (e) {
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res.status(500).json({ error: 'Invalid backup file format' });
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}
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});
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});
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// Add a status endpoint for testing
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app.get('/api/status', (req, res) => {
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res.json({ status: 'ok', version: '1.0', timestamp: new Date().toISOString() });
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});
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// Start the server
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app.listen(port, () => {
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console.log(`Server running at http://localhost:${port}`);
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});
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// Schedule automatic backups daily at midnight
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cron.schedule('0 0 * * *', () => {
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console.log('Creating automatic daily backup');
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const name = `Auto_${new Date().toLocaleDateString()}`;
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const timestamp = Date.now();
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const fileName = `backup_${timestamp}_name_${name}.json`;
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const filePath = path.join(backupDir, fileName);
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db.all('SELECT id, data FROM coin_trackers', [], (err, rows) => {
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if (err) {
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console.error('Auto backup error:', err);
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return;
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}
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const data = rows.map(row => JSON.parse(row.data));
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const backupData = {
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date: new Date().toISOString(),
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name: name,
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data: data
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};
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fs.writeFile(filePath, JSON.stringify(backupData, null, 2), (err) => {
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if (err) {
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console.error('Error writing auto backup:', err);
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return;
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}
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console.log('Automatic backup created successfully');
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});
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});
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});
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