server.js

import express from 'express';
import cors from 'cors';
import { apiReference } from '@scalar/express-api-reference';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);

const app = express();
app.use(cors());
app.use(express.json());

// Create API reference middleware
app.use(
  '/api-reference',
  apiReference({
    url: '/openapi.json',
  })
);

app.get('/openapi.json', (req, res) => {
  res.sendFile(path.join(path.dirname(__filename), 'openapi.json'));
});

// In-memory storage for notes
let notes = [];
let nextId = 1;

// Get all notes
app.get('/notes', (req, res) => {
  res.json(notes);
});

// Get a single note by ID
app.get('/notes/:id', (req, res) => {
  const note = notes.find(n => n.id === parseInt(req.params.id));
  if (!note) {
    return res.status(404).json({ message: 'Note not found' });
  }
  res.json(note);
});

// Create a new note
app.post('/notes', (req, res) => {
  const { title, content } = req.body;
  
  if (!title || !content) {
    return res.status(400).json({ message: 'Title and content are required' });
  }

  const newNote = {
    id: nextId++,
    title,
    content,
    createdAt: new Date().toISOString(),
    updatedAt: new Date().toISOString()
  };

  notes.push(newNote);
  res.status(201).json(newNote);
});

// Update a note
app.put('/notes/:id', (req, res) => {
  const noteIndex = notes.findIndex(n => n.id === parseInt(req.params.id));
  
  if (noteIndex === -1) {
    return res.status(404).json({ message: 'Note not found' });
  }

  const { title, content } = req.body;
  
  if (!title || !content) {
    return res.status(400).json({ message: 'Title and content are required' });
  }

  const updatedNote = { ...notes[noteIndex], title, content, updatedAt: new Date().toISOString() };
  notes[noteIndex] = updatedNote;
  res.json(updatedNote);
});

// Delete a note
app.delete('/notes/:id', (req, res) => {
  const noteIndex = notes.findIndex(n => n.id === parseInt(req.params.id));
  
  if (noteIndex === -1) {
    return res.status(404).json({ message: 'Note not found' });
  }

  notes.splice(noteIndex, 1);
  res.status(204).send();
});

const PORT = process.env.PORT || 3002;
app.listen(PORT, () => {
  console.log(`Server is running on port ${PORT}`);
  console.log(`API Reference available at http://localhost:${PORT}/api-reference`);
});