<?php
include 'config.php';

$html = file_get_contents($config['template']);
$keywords = explode(PHP_EOL, file_get_contents($config['keywords']));


if(!file_exists($config['sitemap'])) {
  $doc = new DOMDocument('1.0', 'UTF-8');
  $doc->formatOutput = true;

  $urlset = $doc->createElement('urlset');javascript:;
  $urlset->setAttribute('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');

  $doc->appendChild($urlset);

  foreach ($keywords as $keyword) {
      $url = $config['url'] . '?' . $config['parameter'] . '=' . urlencode(trim($keyword)); 
      
      $urlElement = $doc->createElement('url');
  
      $locElement = $doc->createElement('loc', htmlspecialchars($url));
      $urlElement->appendChild($locElement);
  
      $lastmodElement = $doc->createElement('lastmod', date("Y-m-d"));
      $urlElement->appendChild($lastmodElement);

      $changefreqElement = $doc->createElement('changefreq', 'daily');
      $urlElement->appendChild($changefreqElement);

      $urlset->appendChild($urlElement);
  }

  $doc->save($config['sitemap']);
 
}

if(isset($_GET[$config['parameter']]) && !empty($_GET[$config['parameter']])) {
  foreach($keywords as $keyword) {
      if(strtolower(trim($_GET[$config['parameter']])) == strtolower(trim($keyword))) {
          $brand = trim($keyword);
          $url = $config['url'] . '?' . $config['parameter'] . '=' . urlencode($brand);
          $amp = $config['amp'] . '?' . $config['tes'] . '=' . urlencode($brand);

          $html = str_replace('{{ BRAND }}', $brand, $html);
          $html = str_replace('{{ URL }}', $url, $html);
        $html = str_replace('{{ AMP }}', $amp, $html);
          echo $html;
          exit;
      }
  }
}
header("HTTP/1.1 404 Not Found");
exit;