103 lines
3.2 KiB
JavaScript
103 lines
3.2 KiB
JavaScript
// Import necessary modules
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const express = require('express');
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const path = require('path');
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// --- Configuration ---
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const PORT = process.env.PORT || 3000; // Use environment variable or default to 3000
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const PASTE_TTL_HOURS = 2;
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const PASTE_TTL_MS = PASTE_TTL_HOURS * 60 * 60 * 1000; // Time-to-live in milliseconds
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// --- In-Memory Storage ---
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// Using a Map for efficient key-based storage and deletion
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const pastes = new Map(); // Stores { id: content }
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// --- Express App Setup ---
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const app = express();
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// Middleware to parse plain text request bodies (like Hastebin)
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// Limit set to 1MB, adjust as needed
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app.use(express.text({ limit: '1mb', type: 'text/plain' }));
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app.use(express.json()); // For JSON API responses
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// Serve static files from the 'public' directory
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app.use(express.static('public'));
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// Function to generate a unique ID without crypto
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function generateUniqueId() {
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const timestamp = Date.now().toString(36);
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const randomPart = Math.random().toString(36).substring(2, 10);
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return `${timestamp}-${randomPart}`;
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}
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// --- API Routes ---
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/**
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* POST /api/pastes
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* Creates a new paste.
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* Expects the raw text content in the request body.
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* Responds with the generated ID for the paste.
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*/
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app.post('/api/pastes', (req, res) => {
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const content = req.body;
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// Basic validation: Ensure content is present and is a string
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if (!content || typeof content !== 'string' || content.trim() === '') {
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return res.status(400).json({ error: 'Paste content cannot be empty.' });
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}
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// Generate a unique ID without using crypto
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const id = generateUniqueId();
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// Store the paste content in the map
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pastes.set(id, content);
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console.log(`[${new Date().toISOString()}] Paste created with ID: ${id}`);
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// Schedule the paste for deletion after the TTL
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setTimeout(() => {
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if (pastes.has(id)) {
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pastes.delete(id);
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console.log(`[${new Date().toISOString()}] Paste expired and deleted: ${id}`);
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}
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}, PASTE_TTL_MS);
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// Respond with the ID
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res.status(201).json({ id: id });
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});
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/**
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* GET /api/pastes/:id
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* Retrieves the content of a specific paste by its ID.
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* Responds with the raw text content or 404 if not found.
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*/
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app.get('/api/pastes/:id', (req, res) => {
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const id = req.params.id;
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if (pastes.has(id)) {
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const content = pastes.get(id);
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// Send raw text content
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res.setHeader('Content-Type', 'text/plain; charset=utf-8');
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res.status(200).send(content);
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} else {
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res.status(404).json({ error: 'Paste not found or has expired.' });
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}
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});
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// Serve the main HTML page for all other routes
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app.get('/', (req, res) => {
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res.sendFile(path.join(__dirname, 'public', 'index.html'));
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});
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// --- Start Server ---
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app.listen(PORT, () => {
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console.log(`Paste server listening on port ${PORT}`);
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console.log(`Pastes will be stored for ${PASTE_TTL_HOURS} hours.`);
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console.log(`Open http://localhost:${PORT} in your browser to use the application`);
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});
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// --- Graceful Shutdown (Optional but Recommended) ---
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// Handles CTRL+C in the terminal
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process.on('SIGINT', () => {
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console.log('\nShutting down server...');
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// Perform any cleanup here if needed (though in-memory storage is lost anyway)
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process.exit(0);
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}); |