80 lines
2.4 KiB
PHP
80 lines
2.4 KiB
PHP
<?php
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/*
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Plugin Name: Post to LiaScript Shortcode Button
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Description: Ermittelt den Content und Titel eines Beitrags, konvertiert den Inhalt in gut strukturiertes Markdown, fügt eine TULLU-Lizenz hinzu, komprimiert und kodiert den Inhalt und gibt einen LiaScript-Link über einen Shortcode aus.
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Version: 1.0
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Author: Joachim Happel
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*/
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if (!defined('ABSPATH')) {
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exit; // Exit if accessed directly.
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}
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// Include Composer autoload
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require_once __DIR__ . '/vendor/autoload.php';
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#use Parsedown;
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use League\HTMLToMarkdown\HtmlConverter;
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class PostToLiaScriptShortcodeButton {
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public function __construct() {
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add_shortcode('shareliascriptbtn', array($this, 'generate_lia_script_link'));
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}
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public function generate_lia_script_link($atts) {
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$atts = shortcode_atts(array(
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'class' => 'button',
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'label' => 'Teilen'
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), $atts, 'shareliascriptbtn');
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if (is_singular()) {
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global $post;
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$title = get_the_title($post->ID);
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$content = apply_filters('the_content', $post->post_content);
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// Convert content to Markdown
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$markdownContent = $this->convert_to_markdown($content);
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// Append TULLU license
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$license = "\n\n---\n\n" . "This work is licensed under the TULLU rule. For more information, visit https://open-educational-resources.de/oer-tullu-regel/";
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$markdownContent .= $license;
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// Convert Markdown content to gzip Base64
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$contentHash = $this->create_gzip_base64_data($markdownContent);
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// Generate the link
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$link = sprintf(
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'<a href="https://liascript.github.io/LiveEditor/?/show/code/%s" class="%s" target="_blank">%s</a>',
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$contentHash,
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esc_attr($atts['class']),
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esc_html($atts['label'])
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);
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return $link;
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}
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return '';
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}
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private function convert_to_markdown($content) {
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$parsedown = new Parsedown();
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$html = $parsedown->text($content);
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$converter = new HtmlConverter();
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$markdown = $converter->convert($html);
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$markdown = strip_tags($markdown);
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return $markdown;
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}
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private function create_gzip_base64_data($data) {
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$gzData = gzencode($data, 9);
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return base64_encode($gzData);
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}
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}
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// Initialize the plugin
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new PostToLiaScriptShortcodeButton();
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