Fix markup for image from external sources for Confluence

libs/Format/Confluence/ContentTypes/Markdown/CommonMarkConverter.php

@@ -16,5 +16,7 @@ class CommonMarkConverter extends \Todaymade\Daux\ContentTypes\Markdown\CommonMa
         //Add code renderer
         $environment->addBlockRenderer('FencedCode', new FencedCodeRenderer());
         $environment->addBlockRenderer('IndentedCode', new IndentedCodeRenderer());
+
+        $environment->addInlineRenderer('Image', new ImageRenderer());
     }
 }

libs/Format/Confluence/ContentTypes/Markdown/ImageRenderer.php

@@ -0,0 +1,29 @@
+<?php namespace Todaymade\Daux\Format\Confluence\ContentTypes\Markdown;
+
+use League\CommonMark\ElementRendererInterface;
+use League\CommonMark\HtmlElement;
+use League\CommonMark\Inline\Element\AbstractInline;
+use League\CommonMark\Inline\Element\Image;
+
+class ImageRenderer extends \League\CommonMark\Inline\Renderer\ImageRenderer
+{
+    /**
+     * @param Image                    $inline
+     * @param ElementRendererInterface $htmlRenderer
+     *
+     * @return HtmlElement
+     */
+    public function render(AbstractInline $inline, ElementRendererInterface $htmlRenderer)
+    {
+        // External Images need special handling
+        if (strpos($inline->getUrl(), 'http') === 0) {
+          return new HtmlElement(
+              'ac:image',
+              [],
+              new HtmlElement('ri:url', ['ri:value' => $inline->getUrl()])
+          );
+        }
+
+        return parent::render($inline, $htmlRenderer);
+    }
+}