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<?php |
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declare(strict_types=1); |
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/** |
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* Derafu: Biblioteca PHP (Núcleo). |
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* Copyright (C) Derafu <https://www.derafu.org> |
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* |
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* Este programa es software libre: usted puede redistribuirlo y/o modificarlo |
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* bajo los términos de la Licencia Pública General Affero de GNU publicada por |
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* la Fundación para el Software Libre, ya sea la versión 3 de la Licencia, o |
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* (a su elección) cualquier versión posterior de la misma. |
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* |
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* Este programa se distribuye con la esperanza de que sea útil, pero SIN |
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* GARANTÍA ALGUNA; ni siquiera la garantía implícita MERCANTIL o de APTITUD |
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* PARA UN PROPÓSITO DETERMINADO. Consulte los detalles de la Licencia Pública |
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* General Affero de GNU para obtener una información más detallada. |
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* |
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* Debería haber recibido una copia de la Licencia Pública General Affero de GNU |
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* junto a este programa. |
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* |
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* En caso contrario, consulte <http://www.gnu.org/licenses/agpl.html>. |
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*/ |
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namespace Derafu\Lib\Core\Package\Prime\Component\Template\Worker\Renderer\Strategy; |
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use Derafu\Lib\Core\Foundation\Abstract\AbstractStrategy; |
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use Derafu\Lib\Core\Helper\Arr; |
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use Derafu\Lib\Core\Package\Prime\Component\Template\Contract\Renderer\Strategy\MarkdownRendererStrategyInterface; |
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use Derafu\Lib\Core\Package\Prime\Component\Template\Exception\TemplateException; |
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use Embed\Embed; |
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use League\CommonMark\MarkdownConverter; |
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use League\CommonMark\Environment\Environment; |
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use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension; |
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use League\CommonMark\Extension\GithubFlavoredMarkdownExtension; |
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use League\CommonMark\Extension\TableOfContents\TableOfContentsExtension; |
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use League\CommonMark\Extension\HeadingPermalink\HeadingPermalinkExtension; |
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use League\CommonMark\Extension\Footnote\FootnoteExtension; |
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use League\CommonMark\Extension\DescriptionList\DescriptionListExtension; |
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use League\CommonMark\Extension\Attributes\AttributesExtension; |
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use League\CommonMark\Extension\SmartPunct\SmartPunctExtension; |
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use League\CommonMark\Extension\ExternalLink\ExternalLinkExtension; |
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use League\CommonMark\Extension\FrontMatter\FrontMatterExtension; |
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use League\CommonMark\Extension\Mention\MentionExtension; |
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use League\CommonMark\Extension\Embed\EmbedExtension; |
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use League\CommonMark\Extension\Embed\Bridge\OscaroteroEmbedAdapter; |
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use League\CommonMark\Extension\FrontMatter\FrontMatterProviderInterface; |
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/** |
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* Estrategia de renderizado de archivos Markdown (.md). |
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*/ |
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class MarkdownRendererStrategy extends AbstractStrategy implements MarkdownRendererStrategyInterface |
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{ |
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/** |
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* Instancia del convertidor de markdown. |
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* |
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* @var MarkdownConverter |
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*/ |
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private MarkdownConverter $markdown; |
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/** |
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* Configuración del ambiente de markdown. |
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* |
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* @var array |
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*/ |
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private array $config = [ |
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'extensions' => [ |
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CommonMarkCoreExtension::class, |
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GithubFlavoredMarkdownExtension::class, |
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TableOfContentsExtension::class, |
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HeadingPermalinkExtension::class, |
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FootnoteExtension::class, |
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DescriptionListExtension::class, |
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AttributesExtension::class, |
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SmartPunctExtension::class, |
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ExternalLinkExtension::class, |
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FrontMatterExtension::class, |
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MentionExtension::class, |
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EmbedExtension::class, |
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], |
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'environment' => [ |
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'table_of_contents' => [ |
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'min_heading_level' => 2, |
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'max_heading_level' => 3, |
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'normalize' => 'relative', |
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'position' => 'placeholder', |
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'placeholder' => '[TOC]', |
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], |
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'heading_permalink' => [ |
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'html_class' => 'text-decoration-none small text-muted', |
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'id_prefix' => 'content', |
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'fragment_prefix' => 'content', |
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'insert' => 'before', |
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'title' => 'Permalink', |
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'symbol' => '<i class="fa-solid fa-link"></i> ', |
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], |
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'external_link' => [ |
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//'internal_hosts' => null, // Solo el Dominio (sin esquema HTTP). |
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'open_in_new_window' => true, |
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'html_class' => 'external-link', |
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'nofollow' => 'external', |
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'noopener' => 'external', |
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'noreferrer' => 'external', |
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], |
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'mentions' => [ |
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'@' => [ |
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'prefix' => '@', |
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'pattern' => '[a-z\d](?:[a-z\d]|-(?=[a-z\d])){0,38}(?!\w)', |
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'generator' => 'https://github.com/%s', |
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], |
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'#' => [ |
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'prefix' => '#', |
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'pattern' => '\d+', |
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'generator' => "https://github.com/sowerphp/sowerphp-framework/issues/%d", |
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], |
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], |
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'embed' => [ |
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//'adapter' => null, // new OscaroteroEmbedAdapter() |
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'allowed_domains' => ['youtube.com'], |
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'fallback' => 'link', |
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'library' => [ |
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'oembed:query_parameters' => [ |
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'maxwidth' => 400, |
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'maxheight' => 300, |
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], |
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], |
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], |
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], |
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]; |
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/** |
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* Rutas donde están las plantillas. |
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* |
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* @var array |
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*/ |
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private array $paths; |
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/** |
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* Constructor de la estrategia. |
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* |
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* @param string|array $paths Rutas dónde se buscarán las plantillas. |
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*/ |
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public function __construct(string|array $paths = []) |
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{ |
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$this->paths = is_string($paths) ? [$paths] : $paths; |
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} |
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/** |
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* Renderiza una plantilla markdown y devuelve el resultado como una cadena. |
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* |
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* Además, si se ha solicitado, se entregará el contenido dentro de un |
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* layout que se renderizará con PHP. |
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* |
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* @param string $template Plantilla markdown que se va a renderizar. |
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* @param array $data Datos que se pasarán a la plantilla markdown para su |
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* uso dentro de la vista. |
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* @return string El contenido HTML generado por la plantilla markdown. |
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*/ |
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public function render(string $template, array &$data = []): string |
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{ |
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// Cargar plantilla. |
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$filepath = $this->resolveTemplate($template); |
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$content = file_get_contents($filepath); |
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// Obtener instancia del renderizador markdown (biblioteca externa). |
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$config = $data['options']['config']['markdown'] ?? []; |
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$markdown = $this->getMarkdown($config); |
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// Reemplazar las variables del archivo Markdown con los datos. |
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foreach ($data as $key => $value) { |
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if ( |
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is_scalar($value) |
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|| (is_object($value) && method_exists($value, '__toString')) |
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) { |
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$content = preg_replace( |
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'/\{\{\s*' . preg_quote($key, '/') . '\s*\}\}/', |
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$value, |
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$content |
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); |
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} |
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} |
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// Renderizar HTML a partir del contenido markdown. |
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$result = $markdown->convert($content); |
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$content = $result->getContent(); |
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// Reemplazos por diseño. |
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$content = '<div class="markdown-body">' . $content . '</div>'; |
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$content = str_replace( |
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[ |
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htmlspecialchars( |
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$this->config['environment']['heading_permalink']['symbol'] |
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), |
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], |
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[ |
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$this->config['environment']['heading_permalink']['symbol'], |
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], |
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$content |
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); |
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// Acceder a los metadatos del Front Matter para agregar variables que |
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// se hayan definido a $data y se puedan utilizar en el worker. |
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if ($result instanceof FrontMatterProviderInterface) { |
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$frontMatter = $result->getFrontMatter(); |
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$data = array_merge($data, $frontMatter); |
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} |
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// Entregar el contenido renderizado. |
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return $content; |
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} |
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/** |
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* Entrega la instancia del renderizador markdown. |
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* |
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* @param array $config |
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* @return MarkdownConverter |
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*/ |
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private function getMarkdown(array $config): MarkdownConverter |
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{ |
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if (!isset($this->markdown)) { |
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// Cargar configuración del motor de renderizado. |
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$this->config = $this->loadConfigurations($config); |
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// Crear ambiente (entorno). |
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$environment = new Environment($this->config['environment']); |
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// Agregar extensiones. |
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foreach ($this->config['extensions'] as $extension) { |
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$environment->addExtension(new $extension()); |
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} |
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// Crear instancia del convertidor de markdown. |
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$this->markdown = new MarkdownConverter($environment); |
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} |
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return $this->markdown; |
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} |
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/** |
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* Genera la configuración para el ambiente de conversión de markdown. |
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* |
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* @param array $config Configuración que se unirá a la por defecto. |
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* @return array |
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*/ |
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private function loadConfigurations(array $config = []): array |
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{ |
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// Configuración de 'external_link'. |
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// Se hace antes del merge de abajo por si se desea sobrescribir |
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// mediante la configuración de la aplicación (no debería). |
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// $config['environment']['external_link']['internal_hosts'] = ''; |
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// Armar configuración usando la por defecto y la de la aplicación |
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$config = Arr::mergeRecursiveDistinct(Arr::mergeRecursiveDistinct( |
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$this->config, |
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$this->getOptions()->all() |
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), $config); |
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// Configuración de 'embed'. |
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$embedLibrary = new Embed(); |
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$embedLibrary->setSettings($config['environment']['embed']['library']); |
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$config['environment']['embed']['adapter'] = |
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new OscaroteroEmbedAdapter($embedLibrary) |
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; |
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unset($config['environment']['embed']['library']); |
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// Entregar la configuración que se cargó. |
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return $config; |
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} |
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/** |
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* Resuelve la plantilla que se está solicitando. |
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* |
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* Se encarga de: |
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* |
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* - Agregar la extensión a la plantilla. |
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* - Entregar la plantilla si es una ruta absoluta. |
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* - Buscar la plantilla en las rutas. |
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* |
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* @param string $template |
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* @return string |
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*/ |
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private function resolveTemplate(string $template): string |
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{ |
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// Agregar extensión. |
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if (!str_ends_with($template, '.md')) { |
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$template .= '.md'; |
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} |
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// Si se pasó una ruta absoluta se entrega directamente. |
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if ($template[0] === '/') { |
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if (!file_exists($template)) { |
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throw new TemplateException(sprintf( |
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'La plantilla %s no fue encontrada.', |
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$template |
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)); |
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} |
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return $template; |
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} |
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// Buscar la plantilla en diferentes rutas. |
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foreach ($this->paths as $path) { |
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if (file_exists($path . '/' . $template)) { |
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return $path . '/' . $template; |
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} |
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} |
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// No se encontró la plantilla. |
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throw new TemplateException(sprintf( |
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'La plantilla %s no fue encontrada. Se buscó en los directorios: %s', |
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$template, |
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implode(' ', $this->paths) |
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)); |
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} |
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} |
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