import 'dotenv/config';
import express from 'express';
import cors from 'cors';
import { connectDatabase } from './config/database';
import { loadCachedRegistry } from './services/versionRegistry';
import generateRouter from './routes/generate';
import versionsRouter from './routes/versions';
import historyRouter from './routes/history';

const app = express();
const PORT = parseInt(process.env.PORT ?? '3001', 10);

app.use(cors({ origin: process.env.CLIENT_ORIGIN ?? 'http://localhost:5173' }));
app.use(express.json({ limit: '50mb' }));
app.use(express.urlencoded({ extended: true, limit: '50mb' }));

app.get('/health', (_req, res) => res.json({ status: 'ok', timestamp: new Date().toISOString() }));

app.use('/api/generate', generateRouter);
app.use('/api/versions', versionsRouter);
app.use('/api/history', historyRouter);

app.use((_req, res) => res.status(404).json({ error: 'Not found' }));

app.use((err: Error, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
  console.error('[Error]', err.message);
  res.status(500).json({ error: err.message });
});

async function start(): Promise<void> {
  await connectDatabase();
  await loadCachedRegistry();

  app.listen(PORT, () => {
    console.log(`[Server] Running on http://localhost:${PORT}`);
    console.log(`[Server] ANTHROPIC_API_KEY: ${process.env.ANTHROPIC_API_KEY ? 'set ✓' : 'NOT SET ✗'}`);
  });
}

start();