Version 1.0

post-to-liascript-shortcode-button.php

@@ -0,0 +1,78 @@
+<?php
+/*
+Plugin Name: Post to LiaScript Shortcode Button
+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.
+Version: 1.0
+Author: Joachim Happel
+*/
+
+if (!defined('ABSPATH')) {
+    exit; // Exit if accessed directly.
+}
+
+// Include Composer autoload
+require_once __DIR__ . '/vendor/autoload.php';
+
+#use Parsedown;
+use League\HTMLToMarkdown\HtmlConverter;
+
+class PostToLiaScriptShortcodeButton {
+
+    public function __construct() {
+        add_shortcode('shareliascriptbtn', array($this, 'generate_lia_script_link'));
+    }
+
+    public function generate_lia_script_link($atts) {
+        $atts = shortcode_atts(array(
+            'class' => 'button',
+            'label' => 'Teilen'
+        ), $atts, 'shareliascriptbtn');
+
+        if (is_singular()) {
+            global $post;
+
+            $title = get_the_title($post->ID);
+            $content = apply_filters('the_content', $post->post_content);
+
+            
+            // Convert content to Markdown
+            $markdownContent = $this->convert_to_markdown($content);
+
+            // Append TULLU license
+            $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/";
+
+            $markdownContent .= $license;
+
+            // Convert Markdown content to gzip Base64
+            $contentHash = $this->create_gzip_base64_data($markdownContent);
+
+            // Generate the link
+            $link = sprintf(
+                '<a href="https://liascript.github.io/LiveEditor/?/show/code/%s" class="%s" target="_blank">%s</a>',
+                $contentHash,
+                esc_attr($atts['class']),
+                esc_html($atts['label'])
+            );
+
+            return $link;
+        }
+
+        return '';
+    }
+
+    private function convert_to_markdown($content) {
+        $parsedown = new Parsedown();
+        $html = $parsedown->text($content);
+        $converter = new HtmlConverter();
+        $markdown = $converter->convert($html);
+        return $markdown;
+    }
+
+    private function create_gzip_base64_data($data) {
+        $gzData = gzencode($data, 9);
+        return base64_encode($gzData);
+    }
+}
+
+// Initialize the plugin
+new PostToLiaScriptShortcodeButton();