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<?php
declare( strict_types=1 );
namespace Automattic\WooCommerce\Internal\EmailEditor;
use Automattic\WooCommerce\EmailEditor\Email_Css_Inliner;
use Automattic\WooCommerce\EmailEditor\Email_Editor_Container;
use Automattic\WooCommerce\EmailEditor\Engine\Theme_Controller;
/**
* Class responsible for extracting the main content from a WC_Email object.
*/
class WooContentProcessor {
/**
* Email theme controller
* We use it to get email CSS.
*
* @var Theme_Controller
*/
private $theme_controller;
/**
* CSS inliner
*
* @var Email_Css_Inliner
*/
private $css_inliner;
/**
* Constructor
*/
public function __construct() {
$this->theme_controller = Email_Editor_Container::container()->get( Theme_Controller::class );
$this->css_inliner = new Email_Css_Inliner();
}
/**
* Get the WooCommerce content excluding headers and footers.
*
* @param \WC_Email $wc_email WooCommerce email.
* @return string
*/
public function get_woo_content( \WC_Email $wc_email ): string {
$woo_content = $this->capture_woo_content( $wc_email );
$woo_content_with_css = $this->inline_css( $woo_content );
return $this->get_html_body_content( $woo_content_with_css );
}
/**
* Filter CSS for the email.
* The CSS was from email editor was already inlined.
* The method hookes to woocommerce_email_styles and removes CSS rules that we don't want to apply to the email.
*
* @param string $css CSS.
* @return string
*/
public function prepare_css( string $css ): string {
remove_filter( 'woocommerce_email_styles', array( $this, 'prepare_css' ) );
// Remove color and font-family declarations from WooCommerce CSS.
$css = preg_replace( '/color\s*:\s*[^;]+;/', '', $css );
$css = preg_replace( '/font-family\s*:\s*[^;]+;/', '', $css );
return $css;
}
/**
* Get the content of the body tag from the HTML.
*
* @param string $html HTML.
* @return string
*/
private function get_html_body_content( string $html ): string {
// Extract content between <body> and </body> tags using regex.
if ( preg_match( '/<body[^>]*>(.*?)<\/body>/is', $html, $matches ) ) {
return $matches[1];
}
return $html;
}
/**
* Inline the CSS from the email theme and user email settings.
*
* @param string $woo_content WooCommerce content.
* @return string
*/
private function inline_css( string $woo_content ): string {
if ( empty( $woo_content ) ) {
return '';
}
$css = $this->theme_controller->get_stylesheet_for_rendering();
return $this->css_inliner->from_html( $woo_content )->inline_css( $css )->render();
}
/**
* Capture the WooCommerce content excluding headers and footers.
*
* @param \WC_Email $wc_email WooCommerce email.
* @return string
*/
private function capture_woo_content( \WC_Email $wc_email ): string {
return $wc_email->get_block_editor_email_template_content();
}
}
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