Add email renderer and template to the renderer engine

In this commit, I copied the code for processing the rendering of emails from the current renderer. This will allow us to use different base templates and styles. Ideally, we should be able to add hooks and reuse the renderer from the engine namespace in the current renderer. [MAILPOET-5540]
2023-08-24 14:01:43 +02:00
parent b70ad064c7
commit 46a481ec24
8 changed files with 302 additions and 66 deletions
--- a/mailpoet/lib/EmailEditor/Engine/Renderer/Renderer.php
+++ b/mailpoet/lib/EmailEditor/Engine/Renderer/Renderer.php
@ -0,0 +1,99 @@
+<?php declare(strict_types = 1);
+
+namespace MailPoet\EmailEditor\Engine\Renderer;
+
+use MailPoet\Util\pQuery\DomNode;
+use MailPoetVendor\Html2Text\Html2Text;
+
+class Renderer {
+
+  /** @var \MailPoetVendor\CSS */
+  private $cssInliner;
+
+  /** @var BodyRenderer */
+  private $bodyRenderer;
+
+  const TEMPLATE_FILE = 'template.html';
+  const STYLES_FILE = 'styles.css';
+
+  /**
+   * @param \MailPoetVendor\CSS $cssInliner
+   */
+  public function __construct(
+    \MailPoetVendor\CSS $cssInliner,
+    BodyRenderer $bodyRenderer
+  ) {
+    $this->cssInliner = $cssInliner;
+    $this->bodyRenderer = $bodyRenderer;
+  }
+
+  public function render(string $postContent, string $subject, string $preHeader, string $language, $metaRobots = ''): array {
+    $renderedBody = $this->bodyRenderer->renderBody($postContent);
+    $styles = (string)file_get_contents(dirname(__FILE__) . '/' . self::STYLES_FILE);
+
+    /**
+     * {{email_language}}
+     * {{email_subject}}
+     * {{email_meta_robots}}
+     * {{email_styles}}
+     * {{email_preheader}}
+     * {{email_body}}
+     */
+    $templateWithContents = $this->injectContentIntoTemplate(
+      (string)file_get_contents(dirname(__FILE__) . '/' . self::TEMPLATE_FILE),
+      [
+        $language,
+        esc_html($subject),
+        $metaRobots,
+        $styles,
+        esc_html($preHeader),
+        $renderedBody,
+      ]
+    );
+
+    $templateWithContentsDom = $this->inlineCSSStyles($templateWithContents);
+    $templateWithContents = $this->postProcessTemplate($templateWithContentsDom);
+    return [
+      'html' => $templateWithContents,
+      'text' => $this->renderTextVersion($templateWithContents),
+    ];
+  }
+
+  private function injectContentIntoTemplate($template, array $content) {
+    return preg_replace_callback('/{{\w+}}/', function($matches) use (&$content) {
+      return array_shift($content);
+    }, $template);
+  }
+
+  /**
+   * @param string $template
+   * @return DomNode
+   */
+  private function inlineCSSStyles($template) {
+    return $this->cssInliner->inlineCSS($template);
+  }
+
+  /**
+   * @param string $template
+   * @return string
+   */
+  private function renderTextVersion($template) {
+    $template = (mb_detect_encoding($template, 'UTF-8', true)) ? $template : mb_convert_encoding($template, 'UTF-8', mb_list_encodings());
+    return @Html2Text::convert($template);
+  }
+
+  /**
+   * @param DomNode $templateDom
+   * @return string
+   */
+  private function postProcessTemplate(DomNode $templateDom) {
+    // replace spaces in image tag URLs
+    foreach ($templateDom->query('img') as $image) {
+      $image->src = str_replace(' ', '%20', $image->src);
+    }
+    // because tburry/pquery contains a bug and replaces the opening non mso condition incorrectly we have to replace the opening tag with correct value
+    $template = $templateDom->__toString();
+    $template = str_replace('<!--[if !mso]><![endif]-->', '<!--[if !mso]><!-- -->', $template);
+    return $template;
+  }
+}