without_css_inline( $post, $template );
$template_html = $content_result['html'];
$content_styles = $content_result['styles'];
$layout = $this->theme_controller->get_layout_settings();
ob_start();
include self::TEMPLATE_FILE;
$rendered_template = (string) ob_get_clean();
$template_styles =
WP_Style_Engine::compile_css(
array(
'background-color' => $email_styles['color']['background'] ?? 'inherit',
'color' => $email_styles['color']['text'] ?? 'inherit',
'padding-top' => $email_styles['spacing']['padding']['top'] ?? '0px',
'padding-bottom' => $email_styles['spacing']['padding']['bottom'] ?? '0px',
'font-family' => $email_styles['typography']['fontFamily'] ?? 'inherit',
'line-height' => $email_styles['typography']['lineHeight'] ?? '1.5',
'font-size' => $email_styles['typography']['fontSize'] ?? 'inherit',
),
'body, .email_layout_wrapper'
);
$template_styles .= '.email_layout_wrapper { box-sizing: border-box;}';
$template_styles .= file_get_contents( __DIR__ . '/' . self::TEMPLATE_STYLES_FILE );
$template_styles = wp_strip_all_tags( (string) apply_filters( 'woocommerce_email_renderer_styles', $template_styles, $post ) );
// Single CSS inlining pass: combine content and template styles, then inline all at once.
$all_styles = '';
$rendered_template = $this->inline_css_styles( $all_styles . $rendered_template );
// Postprocess after CSS inlining (border normalization, CSS variable replacement, etc.).
$rendered_template = $this->process_manager->postprocess( $rendered_template );
// This is a workaround to support link :hover in some clients. Ideally we would remove the ability to set :hover
// however this is not possible using the color panel from Gutenberg.
if ( isset( $email_styles['elements']['link'][':hover']['color']['text'] ) ) {
$rendered_template = str_replace( '', '', $rendered_template );
}
return array(
'html' => $rendered_template,
'text' => $this->render_text_version( $rendered_template ),
);
}
/**
* Inlines CSS styles into the HTML
*
* @param string $template HTML template.
* @return string
*/
private function inline_css_styles( $template ) {
return $this->css_inliner->from_html( $template )->inline_css()->render();
}
/**
* Renders the text version of the email template.
*
* @param string $template HTML template.
* @return string
*/
private function render_text_version( $template ) {
$template = ( mb_detect_encoding( $template, 'UTF-8', true ) ) ? $template : mb_convert_encoding( $template, 'UTF-8', mb_list_encodings() );
// Ensure template is a string before processing.
if ( ! is_string( $template ) ) {
return '';
}
// Preserve personalization tags by temporarily replacing them with unique placeholders.
$template = $this->preserve_personalization_tags( $template );
$result = Html2Text::convert( (string) $template, array( 'ignore_errors' => true ) );
if ( ! $result ) {
return '';
}
// Restore personalization tags from placeholders.
$result = $this->restore_personalization_tags( $result );
return $result;
}
/**
* Preserves personalization tags by replacing them with unique placeholders (not inside comments).
*
* @param string $template HTML template.
* @return string
*/
private function preserve_personalization_tags( string $template ): string {
$all_registered_tags = $this->personalization_tags_registry->get_all();
$this->personalization_tag_placeholders = array();
$counter = 0;
$base_tokens = array(); // All the tokens used in the email, e.g. [woocommerce/customer-username].
$token_prefixes = array(); // All the used prefixes, e.g. woocommerce, mailpoet, etc.
foreach ( $all_registered_tags as $tag ) {
$token = $tag->get_token(); // E.g. [woocommerce/customer-username].
$base_tokens[ $token ] = true;
// Remove brackets for regex matching, escape for regex.
$token_prefixes[] = preg_quote( substr( $token, 1, -1 ), '/' );
}
if ( empty( $token_prefixes ) ) {
return $template;
}
// Match all of the code comments that look like a personalization tags.
$pattern = '//';
$template = preg_replace_callback(
$pattern,
function ( $matches ) use ( &$counter, $base_tokens ) {
// $matches[1] is the token without brackets, add brackets for lookup.
$base_token = '[' . $matches[1] . ']';
if ( isset( $base_tokens[ $base_token ] ) ) {
$placeholder = 'PERSONALIZATION_TAG_PLACEHOLDER_' . $counter;
$this->personalization_tag_placeholders[ $placeholder ] = $matches[0];
++$counter;
return $placeholder;
}
return $matches[0];
},
$template
);
return $template ?? '';
}
/**
* Restores personalization tags from placeholders
*
* @param string $text Text content.
* @return string
*/
private function restore_personalization_tags( string $text ): string {
if ( empty( $this->personalization_tag_placeholders ) ) {
return $text;
}
foreach ( $this->personalization_tag_placeholders as $placeholder => $html_comment ) {
$text = str_replace( $placeholder, $html_comment, $text );
}
return $text;
}
}