const express = require('express');
const router = express.Router();
const path = require('path');
const fs = require('fs');

// Serve generated static sites at /sites/{clientId}/
// (Subdomain serving is handled in server.js middleware)

const pageMap = {
  '': 'index.html',
  'contact': 'contact.html',
  'privacy-policy': 'privacy-policy.html',
  'terms': 'terms.html',
};

// Serve static assets for the site (CSS, images, etc.)
router.use('/:clientId/assets', (req, res) => {
  const { clientId } = req.params;
  const filePath = path.join(__dirname, '..', 'data', clientId, 'site', 'assets', req.path);
  if (fs.existsSync(filePath)) {
    res.sendFile(filePath);
  } else {
    res.status(404).send('Not found');
  }
});

// Serve pages
router.get('/:clientId/:page?', (req, res) => {
  const { clientId } = req.params;
  const page = (req.params.page || '').replace(/\/$/, '');
  const filename = pageMap[page];
  
  if (!filename) {
    return res.status(404).send('Page not found');
  }
  
  const filePath = path.join(__dirname, '..', 'data', clientId, 'site', filename);
  if (!fs.existsSync(filePath)) {
    return res.status(404).send('Site not found');
  }
  
  // When served via /sites/{id}/, rewrite links to include the prefix
  let html = fs.readFileSync(filePath, 'utf8');
  const baseUrl = `/sites/${clientId}`;
  html = html.replace(/href="\//g, `href="${baseUrl}/`);
  html = html.replace(/src="\//g, `src="${baseUrl}/`);
  html = html.replace(/href="#/g, 'href="#'); // keep anchor links
  
  res.type('html').send(html);
});

module.exports = router;