From 32a102a289099008097beea6cd8571014ce489d5 Mon Sep 17 00:00:00 2001
From: Joachim Happel <joachim.happel@gmail.com>
Date: Fri, 24 May 2024 00:11:49 +0200
Subject: [PATCH] add tullu lisense

---
 post-to-liascript-shortcode-button.php | 60 +++++++++++++++++++++-----
 1 file changed, 49 insertions(+), 11 deletions(-)

diff --git a/post-to-liascript-shortcode-button.php b/post-to-liascript-shortcode-button.php
index 687462b..4b60095 100644
--- a/post-to-liascript-shortcode-button.php
+++ b/post-to-liascript-shortcode-button.php
@@ -33,15 +33,53 @@ class PostToLiaScriptShortcodeButton {
 
             $title = get_the_title($post->ID);
             $content = apply_filters('the_content', $post->post_content);
+            
+            // Get the license terms
+            $terms = wp_get_post_terms($post->ID, 'license');
+            if (!empty($terms) && !is_wp_error($terms)) {
+                $term = $terms[0];
+                $license = $term->name;
+                $license_url = term_description($term->term_id);
+                $license_icon_url = "https://mirrors.creativecommons.org/presskit/buttons/88x31/png/" . str_replace("cc-", "", $term->slug) . ".png";
+            } else {
+                // Default values if no license term is found
+                $license = "No License";
+                $license_url = "#";
+                $license_icon_url = "#";
+            }
 
+            // Get author and site information
+            $post_author_id = $post->post_author;
+            $post_author_name = get_the_author_meta('display_name', $post_author_id);
+            $post_author_url = get_author_posts_url($post_author_id);
+            $home_url = home_url();
+            $blogname = get_bloginfo('name');
+            $post_url = get_permalink($post->ID);
+
+            // License HTML snippet
+            $license_html = "
+            <div class='oer-cc-licensebox'>
+                <a href='{$license_url}'>
+                    <img decoding='async' src='{$license_icon_url}' alt='{$license}'>
+                </a>
+                <br>
+                Weiternutzung als OER ausdrücklich erlaubt: Dieses OER ist - sofern dies bei Teilinhalten nicht anders angegeben - lizenziert unter
+                <a href='{$license_url}' rel='license' target='_blank'>{$license}</a>. 
+                Nennung gemäß <a href='https://open-educational-resources.de/oer-tullu-regel/'>TULLU-Regel</a> bitte wie folgt:<br>
+                <i>
+                    <span xmlns:dct='http://purl.org/dc/terms/' property='dct:title'><a href='{$post_url}' xmlns:cc='http://creativecommons.org/ns#' rel='cc:attributionURL dct:creator'>{$title}</a> (<a href='{$home_url}' xmlns:cc='http://creativecommons.org/ns#' rel='cc:attributionURL dct:publisher'><em>{$blogname}</em></a>)</span>
+                    von <span xmlns:cc='http://creativecommons.org/ns#' property='cc:attributionName dct:author'><a href='{$post_author_url}' rel='tag'>{$post_author_name}</a></span>, 
+                    Lizenz: <a href='{$license_url}' target='_blank'>{$license}</a>
+                </i>.
+            </div>";
+
+            $license_markdown = "\n\n---\n\n### OER-Lizenz\n\n".
+            "Dieses Werk ist - sofern Inhalte nicht anders gekennzeichnet - lizenziert unter".
+                "\n[$title]($post_url)\n[$license]($license_url) [$post_author_name]($post_author_url)/[$blogname]($home_url)";
             
             // Convert content to Markdown
-            $markdownContent = $this->convert_to_markdown($content);
+            $markdownContent = $this->convert_to_markdown($content).$license_markdown;
 
-            // 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);
@@ -54,18 +92,18 @@ class PostToLiaScriptShortcodeButton {
                 esc_html($atts['label'])
             );
 
-            return $link;
+            return $license_html.$link;
         }
 
         return '';
     }
 
     private function convert_to_markdown($content) {
-        $parsedown = new Parsedown();
-        $html = $parsedown->text($content);
-        $converter = new HtmlConverter();
-        $markdown = $converter->convert($html);
-        $markdown = strip_tags($markdown);
+        #$parsedown = new Parsedown();
+        #$contenthtml = $parsedown->text($content);
+        $converter = new HtmlConverter(array('strip_tags' => true));
+        $markdown = $converter->convert($content);
+       # $markdown = strip_tags($markdown);
         return $markdown;
     }