server.ts

import express from 'express';
import cookieParser from 'cookie-parser';
import path from 'node:path';
import fs from 'node:fs';
import { fileURLToPath } from 'node:url';
import { initDatabase } from './src/server/db.js';
import { apiRouter, handleICalExport } from './src/server/api.js';
import { getSessionFromRequest } from './src/server/auth.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const PORT = Number(process.env.PORT) || 3000;
const isProd = process.env.NODE_ENV === 'production';

async function startServer() {
  // Initialize Database & Migrations
  initDatabase();
  console.log('[Pro Tebe] SQLite Databáze inicializována v data/protebe.sqlite');

  const app = express();

  app.use(cookieParser());
  app.use(express.json({ limit: '10mb' }));
  app.use(express.urlencoded({ extended: true }));

  // Attach session data to request if cookie exists
  app.use((req, _res, next) => {
    try {
      const session = getSessionFromRequest(req);
      if (session) {
        req.sessionData = session;
      }
    } catch (err) {
      console.error('Session middleware error:', err);
    }
    next();
  });

  // Public iCal calendar export route
  app.get('/api/calendar/:pairId/:secret.ics', handleICalExport);

  // Mount API endpoints
  app.use('/api', apiRouter);

  // Health check endpoint
  app.get('/api/health', (_req, res) => {
    res.json({ ok: true, app: 'Pro Tebe', timestamp: new Date().toISOString() });
  });

  if (!isProd) {
    // Development mode: Use Vite Dev Server middleware
    const { createServer: createViteServer } = await import('vite');
    const vite = await createViteServer({
      server: {
        middlewareMode: true,
        host: '0.0.0.0',
        port: PORT,
        hmr: process.env.DISABLE_HMR !== 'true',
      },
      appType: 'spa',
    });

    app.use(vite.middlewares);
    console.log('[Pro Tebe] Vite dev middleware aktivní.');
  } else {
    // Production mode: Serve built static files
    const distPath = path.resolve(__dirname, 'dist');
    if (fs.existsSync(distPath)) {
      app.use(express.static(distPath));
      app.get('*', (_req, res) => {
        res.sendFile(path.resolve(distPath, 'index.html'));
      });
    } else {
      console.warn('[Pro Tebe] Varování: Složka dist nebyla nalezena. Spusť `npm run build`.');
    }
  }

  // Global error handler
  app.use((err: any, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
    console.error('[Server Error]:', err);
    res.status(err.status || 500).json({
      ok: false,
      error: err.message || 'Něco se nepovedlo. Zkus to prosím znovu.',
    });
  });

  app.listen(PORT, '0.0.0.0', () => {
    console.log(`[Pro Tebe] Server běží na http://localhost:${PORT}`);
  });
}

startServer().catch((err) => {
  console.error('[Fatal Error] Chyba při spuštění serveru:', err);
  process.exit(1);
});