shortcode->getHandlers()->add('snap-gallery', function (ShortcodeInterface $sc) {
$plugin = $this->grav['plugins']->getPlugin('story-blocks');
$page = $plugin ? $plugin->getCurrentPage() : null;
$baseUrl = $page ? $page->url() . '/' : '';
$images = array_map('trim', explode(',', $sc->getParameter('images', '')));
$captions = array_map('trim', explode(',', $sc->getParameter('captions', '')));
$alts = array_map('trim', explode(',', $sc->getParameter('alts', '')));
$slidesHtml = '';
$dotsHtml = '';
foreach ($images as $i => $filename) {
if (!$filename) continue;
$url = $baseUrl . htmlspecialchars($filename, ENT_QUOTES);
$caption = htmlspecialchars($captions[$i] ?? '', ENT_QUOTES);
$alt = htmlspecialchars($alts[$i] ?? '', ENT_QUOTES);
$eager = $i === 0 ? 'eager' : 'lazy';
$active = $i === 0 ? ' is-active' : '';
$captionTag = $caption
? '' . $caption . ''
: '';
$slidesHtml .= <<
{$captionTag}
HTML;
$dotsHtml .= '';
}
return <<
{$slidesHtml}
{$dotsHtml}