OpenTracking.php
52 lines
| 1 | <?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing |
| 2 | |
| 3 | namespace MailPoet\Newsletter\Renderer\PostProcess; |
| 4 | |
| 5 | if (!defined('ABSPATH')) exit; |
| 6 | |
| 7 | |
| 8 | use MailPoet\Newsletter\Links\Links; |
| 9 | use MailPoet\Newsletter\Renderer\Renderer; |
| 10 | use MailPoet\Util\pQuery\pQuery; |
| 11 | use MailPoet\WP\Functions as WPFunctions; |
| 12 | |
| 13 | class OpenTracking { |
| 14 | public static function process($template) { |
| 15 | $DOM = new pQuery(); |
| 16 | $DOM = $DOM->parseStr($template); |
| 17 | $template = $DOM->select('body'); |
| 18 | // url is a temporary data tag that will be further replaced with |
| 19 | // the proper track API URL during sending |
| 20 | $url = Links::DATA_TAG_OPEN; |
| 21 | $openTrackingImage = sprintf( |
| 22 | '<img alt="" class="" src="%s"/>', |
| 23 | $url |
| 24 | ); |
| 25 | self::appendToDomNodes($template, $openTrackingImage); |
| 26 | return $DOM->__toString(); |
| 27 | } |
| 28 | |
| 29 | public static function addTrackingImage() { |
| 30 | WPFunctions::get()->addFilter(Renderer::FILTER_POST_PROCESS, function ($template) { |
| 31 | return OpenTracking::process($template); |
| 32 | }); |
| 33 | return true; |
| 34 | } |
| 35 | |
| 36 | private static function appendToDomNodes($template, $openTrackingImage): void { |
| 37 | // Preserve backward compatibility with pQuery::html() |
| 38 | // by processing an array of DomNodes |
| 39 | if (!empty($template)) { |
| 40 | $template = is_array($template) ? $template : [$template]; |
| 41 | array_map( |
| 42 | function ($item) use ($openTrackingImage) { |
| 43 | $itemHtml = $item->toString(true, true, 1); |
| 44 | $item->html($itemHtml . $openTrackingImage); |
| 45 | return $item; |
| 46 | }, |
| 47 | $template |
| 48 | ); |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 |