import dotenv from 'dotenv';
import path from 'path';
dotenv.config({ path: path.resolve(__dirname, '../../.env') });

import express from 'express';
import cors from 'cors';
import helmet from 'helmet';
import morgan from 'morgan';

import authRouter from './api/auth';
import postsRouter from './api/posts';
import meetupsRouter from './api/meetups';
import moderationRouter from './api/moderation';
import usersRouter from './api/users';
import categoriesRouter from './api/categories';
import relaysRouter from './api/relays';
import settingsRouter from './api/settings';
import nostrRouter from './api/nostr';
import submissionsRouter from './api/submissions';
import mediaRouter from './api/media';
import faqsRouter from './api/faqs';
import calendarRouter from './api/calendar';
import nip05Router from './api/nip05';

const app = express();
const PORT = parseInt(process.env.BACKEND_PORT || '4000', 10);
const FRONTEND_URL = process.env.FRONTEND_URL || 'http://localhost:3000';

// Trust the first proxy (nginx) so req.ip returns the real client IP
app.set('trust proxy', 1);

app.use(helmet());
app.use(morgan(process.env.NODE_ENV === 'production' ? 'combined' : 'dev'));
app.use(cors({ origin: FRONTEND_URL, credentials: true }));
app.use(express.json());

app.use('/api/auth', authRouter);
app.use('/api/posts', postsRouter);
app.use('/api/meetups', meetupsRouter);
app.use('/api/moderation', moderationRouter);
app.use('/api/users', usersRouter);
app.use('/api/categories', categoriesRouter);
app.use('/api/relays', relaysRouter);
app.use('/api/settings', settingsRouter);
app.use('/api/nostr', nostrRouter);
app.use('/api/submissions', submissionsRouter);
app.use('/api/media', mediaRouter);
app.use('/api/faqs', faqsRouter);
app.use('/api/calendar', calendarRouter);
app.use('/api/nip05', nip05Router);

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

const server = app.listen(PORT, () => {
  console.log(`Backend running on http://localhost:${PORT}`);
});

const shutdown = () => {
  console.log('Shutting down gracefully…');
  server.close(() => {
    console.log('Server closed.');
    process.exit(0);
  });
  // Force exit if connections don't drain within 10 seconds
  setTimeout(() => process.exit(1), 10_000).unref();
};

process.on('SIGTERM', shutdown);
process.on('SIGINT', shutdown);