68 lines
2.4 KiB
JavaScript
68 lines
2.4 KiB
JavaScript
const express = require('express');
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const bodyParser = require('body-parser');
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const fs = require('fs');
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const path = require('path');
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const app = express();
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const PORT = process.env.PORT || 3000;
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const DATA_FILE_PATH = process.env.DATA_FILE_PATH || path.join(__dirname, 'data', 'weight-tracker-data.json'); // Default path for local dev, override in Docker
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// Ensure data directory exists (especially for local dev, Docker volume handles it in container)
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const dataDir = path.dirname(DATA_FILE_PATH);
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if (!fs.existsSync(dataDir)) {
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fs.mkdirSync(dataDir, { recursive: true });
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}
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app.use(bodyParser.json({ limit: '10mb' })); // Generous limit for the data file
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// Middleware to log requests
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app.use((req, res, next) => {
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console.log(`${new Date().toISOString()} - ${req.method} ${req.originalUrl}`);
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next();
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});
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// GET endpoint to retrieve data
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app.get('/', (req, res) => {
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fs.readFile(DATA_FILE_PATH, 'utf8', (err, data) => {
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if (err) {
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if (err.code === 'ENOENT') {
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console.log(`Data file not found at ${DATA_FILE_PATH}, returning empty object.`);
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return res.json({}); // If file doesn't exist, return empty JSON object
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}
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console.error('Error reading data file:', err);
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return res.status(500).send('Error reading data file');
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}
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try {
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res.json(JSON.parse(data));
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} catch (parseErr) {
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console.error('Error parsing data file content:', parseErr);
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// If file content is not valid JSON, perhaps return empty or handle error
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res.status(500).send('Error parsing data file content');
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}
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});
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});
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// PUT endpoint to save data
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app.put('/', (req, res) => {
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const dataToSave = JSON.stringify(req.body, null, 2); // Pretty print JSON
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fs.writeFile(DATA_FILE_PATH, dataToSave, 'utf8', (err) => {
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if (err) {
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console.error('Error writing data file:', err);
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return res.status(500).send('Error writing data file');
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}
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console.log(`Data saved successfully to ${DATA_FILE_PATH}`);
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res.status(200).send('Data saved successfully');
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});
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});
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app.listen(PORT, '0.0.0.0', () => {
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console.log(`Server API listening on port ${PORT}`);
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console.log(`Data file path: ${DATA_FILE_PATH}`);
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});
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// Basic error handler
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app.use((err, req, res, next) => {
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console.error(err.stack);
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res.status(500).send('Something broke!');
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});
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