const express = require('express');
const session = require('express-session');
const pgSession = require('connect-pg-simple')(session);
const path = require('path');
const { pool } = require('./config/database');
require('dotenv').config();

const app = express();
const PORT = process.env.PORT || 3000;

app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));

app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use('/assets', express.static(path.join(__dirname, '../wwwroot/assets')));
app.use('/uploads', express.static(path.join(__dirname, '../wwwroot/uploads')));

app.use(session({
  store: new pgSession({
    pool: pool,
    tableName: 'session',
    createTableIfMissing: true
  }),
  secret: process.env.SESSION_SECRET || 'skyart-shop-secret-2025',
  resave: false,
  saveUninitialized: false,
  cookie: {
    secure: false,
    httpOnly: true,
    maxAge: 24 * 60 * 60 * 1000
  }
}));

app.use((req, res, next) => {
  res.locals.session = req.session;
  res.locals.currentPath = req.path;
  next();
});

const authRoutes = require('./routes/auth');
const adminRoutes = require('./routes/admin');
const publicRoutes = require('./routes/public');

app.use('/admin', authRoutes);
app.use('/admin', adminRoutes);
app.use('/', publicRoutes);

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

app.use((req, res) => {
  res.status(404).render('public/404', {
    title: '404 - Page Not Found'
  });
});

app.use((err, req, res, next) => {
  console.error('Error:', err);
  res.status(500).send('Server error');
});

app.listen(PORT, '0.0.0.0', () => {
  console.log('========================================');
  console.log('  SkyArtShop Backend Server');
  console.log('========================================');
  console.log(`🚀 Server running on http://localhost:${PORT}`);
  console.log(`📦 Environment: ${process.env.NODE_ENV || 'development'}`);
  console.log(`🗄️  Database: PostgreSQL (${process.env.DB_NAME})`);
  console.log('========================================');
});

process.on('SIGTERM', () => {
  console.log('SIGTERM received, closing server...');
  pool.end(() => {
    console.log('Database pool closed');
    process.exit(0);
  });
});