server.js

const path = require('path');
const express = require('express');
const session = require('express-session');
const SQLiteStoreFactory = require('connect-sqlite3');

require('./src/db');

const authRoutes = require('./src/auth');
const offersRoutes = require('./src/routes/offers');
const affiliatesRoutes = require('./src/routes/affiliates');
const trackingRoutes = require('./src/routes/tracking');
const conversionsRoutes = require('./src/routes/conversions');
const reportsRoutes = require('./src/routes/reports');
const settingsRoutes = require('./src/routes/settings');
const apiKeysRoutes = require('./src/routes/api-keys');
const auditRoutes = require('./src/routes/audit');
const webhooksRoutes = require('./src/routes/webhooks');
const gdprRoutes = require('./src/routes/gdpr');
const sdkRoutes = require('./src/routes/sdk');
const partnerPostbacksRoutes = require('./src/routes/partner-postbacks');
const couponCodesRoutes = require('./src/routes/coupon-codes');
const conversionEventsRoutes = require('./src/routes/conversion-events');
const offerGroupsRoutes = require('./src/routes/offer-groups');
const smartLinksRoutes = require('./src/routes/smart-links');
const creativesRoutes = require('./src/routes/creatives');
const labelsRoutes = require('./src/routes/labels');
const categoriesRoutes = require('./src/routes/categories');
const channelsRoutes = require('./src/routes/channels');
const businessUnitsRoutes = require('./src/routes/business-units');
const affiliateTiersRoutes = require('./src/routes/affiliate-tiers');
const funnelsRoutes = require('./src/routes/funnels');
const paymentsRoutes = require('./src/routes/payments');
const integrationsRoutes = require('./src/routes/integrations');
const notificationsRoutes = require('./src/routes/notifications');
const paymentIntegrationsRoutes = require('./src/routes/payment-integrations');

const { apiLimiter, trackingLimiter } = require('./src/middleware/rate-limit');
const apiKeyAuth = require('./src/middleware/apikey');

const app = express();
const SQLiteStore = SQLiteStoreFactory(session);

const PORT = process.env.PORT || 3000;
const HOST = process.env.HOST || '127.0.0.1';

app.use(express.json({ limit: '5mb' }));
app.use(express.urlencoded({ extended: true }));

app.use(session({
  store: new SQLiteStore({
    db: 'sessions.db',
    dir: path.join(__dirname, 'data')
  }),
  secret: process.env.SESSION_SECRET || 'everflow-clone-dev-secret',
  resave: false,
  saveUninitialized: false,
  cookie: { maxAge: 1000 * 60 * 60 * 24 * 7 }
}));

// API key auth (before routes, after session)
app.use(apiKeyAuth);

// Static files
app.use('/public', express.static(path.join(__dirname, 'public')));

// Rate limiting
app.use('/api/', apiLimiter);
app.use('/track/', trackingLimiter);

// Page auth middleware
function requirePageAuth(req, res, next) {
  if (req.path === '/login' || req.path.startsWith('/api/') || req.path.startsWith('/track/') || req.path.startsWith('/public') || req.path === '/health' || req.path === '/offline.html') {
    return next();
  }
  if (!req.session || !req.session.user) {
    return res.redirect('/login');
  }
  return next();
}

app.use(requirePageAuth);

// Login page
app.get('/login', (req, res) => {
  if (req.session?.user) return res.redirect('/');
  return res.sendFile(path.join(__dirname, 'views', 'login.html'));
});

// Page routes
const pages = {
  '/': 'dashboard.html',
  '/offers': 'offers.html',
  '/offers/:id': 'offer-detail.html',
  '/affiliates': 'affiliates.html',
  '/portal': 'portal.html',
  '/conversions': 'conversions.html',
  '/reports': 'reports.html',
  '/settings': 'settings.html',
  '/api-keys': 'api-keys.html',
  '/audit-logs': 'audit-logs.html',
  '/webhooks': 'webhooks.html',
  '/gdpr': 'gdpr.html',
  '/partner-postbacks': 'partner-postbacks.html',
  '/coupon-codes': 'coupon-codes.html',
  '/offer-groups': 'offer-groups.html',
  '/smart-links': 'smart-links.html',
  '/categories': 'categories.html',
  '/labels': 'labels.html',
  '/channels': 'channels.html',
  '/business-units': 'business-units.html',
  '/marketplace': 'marketplace.html',
  '/affiliate-tiers': 'affiliate-tiers.html',
  '/fraud': 'fraud.html',
  '/invoices': 'invoices.html',
  '/payments': 'payments.html',
  '/payment-methods': 'payment-methods.html',
  '/funnels': 'funnels.html',
  '/raw-clicks': 'raw-clicks.html',
  '/raw-conversions': 'raw-conversions.html',
  '/integrations': 'integrations.html',
  '/advertiser-portal': 'advertiser-portal.html',
  '/notifications': 'notifications.html',
  '/saved-reports': 'saved-reports.html'
};

for (const [route, file] of Object.entries(pages)) {
  app.get(route, (req, res) => res.sendFile(path.join(__dirname, 'views', file)));
}

// API routes
app.use('/api/auth', authRoutes);
app.use('/api/offers', offersRoutes);
app.use('/api/affiliates', affiliatesRoutes);
app.use('/api', conversionsRoutes);
app.use('/api', reportsRoutes);
app.use('/api/settings', settingsRoutes);
app.use('/api/api-keys', apiKeysRoutes);
app.use('/api/audit-logs', auditRoutes);
app.use('/api/webhooks', webhooksRoutes);
app.use('/api/gdpr', gdprRoutes);
app.use('/api', sdkRoutes);
app.use('/api/partner-postbacks', partnerPostbacksRoutes);
app.use('/api/coupon-codes', couponCodesRoutes);
app.use('/api', conversionEventsRoutes);
app.use('/api/offer-groups', offerGroupsRoutes);
app.use('/api/smart-links', smartLinksRoutes);
app.use('/api/offers', creativesRoutes);
app.use('/api/labels', labelsRoutes);
app.use('/api/categories', categoriesRoutes);
app.use('/api/channels', channelsRoutes);
app.use('/api/business-units', businessUnitsRoutes);
app.use('/api/affiliate-tiers', affiliateTiersRoutes);
app.use('/api/funnels', funnelsRoutes);
app.use('/api', paymentsRoutes);
app.use('/api/integrations', integrationsRoutes);
app.use('/api/notifications', notificationsRoutes);
app.use('/api/payment-integrations', paymentIntegrationsRoutes);

// Tracking routes (public)
app.use('/', trackingRoutes);

// Health
app.get('/health', (req, res) => res.json({ ok: true }));

// Error handler
app.use((err, req, res, next) => {
  console.error(err);
  res.status(500).json({ error: 'Internal server error' });
});

// SmartSwitch optimization interval (every 6 hours)
const smartSwitch = require('./src/services/smart-switch-engine');
setInterval(() => {
  try { smartSwitch.optimize(); } catch (e) { console.error('SmartSwitch error:', e); }
}, 6 * 60 * 60 * 1000);

app.listen(PORT, HOST, () => {
  console.log(`Everflow clone running on http://${HOST}:${PORT}`);
});