import 'dotenv/config';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';
import Fastify from 'fastify';
import multipart from '@fastify/multipart';
import staticFiles from '@fastify/static';
import websocket from '@fastify/websocket';
import { initDb } from './db/models.js';
import { jobRoutes } from './routes/jobs.js';

const __dirname = dirname(fileURLToPath(import.meta.url));
const PORT = parseInt(process.env.PORT ?? '3000', 10);

const fastify = Fastify({ logger: { level: 'info' } });

// ---------------------------------------------------------------------------
// Plugins
// ---------------------------------------------------------------------------
await fastify.register(multipart, {
  limits: {
    fileSize: 20 * 1024 * 1024, // 20 MB max image
    files: 1,
  },
});

await fastify.register(websocket);

// Serve the built React app — dist/ is built by `npm run dev` (watch)
// or `npm run build` before starting in production.
await fastify.register(staticFiles, {
  root: join(__dirname, 'dist'),
  prefix: '/',
});

// ---------------------------------------------------------------------------
// Routes
// ---------------------------------------------------------------------------
await fastify.register(jobRoutes);

fastify.get('/api/health', async () => ({ ok: true }));

// SPA fallback — let React Router handle any path Fastify doesn't recognise
fastify.setNotFoundHandler((_req, reply) => {
  reply.sendFile('index.html');
});

// ---------------------------------------------------------------------------
// Boot
// ---------------------------------------------------------------------------
await initDb();
await fastify.listen({ port: PORT, host: '0.0.0.0' });
console.log(`✅  Server listening on http://localhost:${PORT}`);