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Edit File: PageRenderer.php

<?php declare(strict_types = 1);

namespace MailPoet\Captcha;

if (!defined('ABSPATH')) exit;

use MailPoet\Form\AssetsController;
use MailPoet\Settings\Pages;
use MailPoet\WP\Functions as WPFunction;

class PageRenderer {
  private array $data = [];
  private WPFunction $wp;
  private CaptchaFormRenderer $formRenderer;
  private AssetsController $assetsController;

public function __construct(
    WPFunction $wp,
    CaptchaFormRenderer $formRenderer,
    AssetsController $assetsController
  ) {
    $this->wp = $wp;
    $this->formRenderer = $formRenderer;
    $this->assetsController = $assetsController;
  }

public function render($data) {
    $this->data = $data;
    $this->wp->addFilter('wp_title', [$this, 'setWindowTitle'], 10, 3);
    $this->wp->addFilter('document_title_parts', [$this, 'setWindowTitleParts']);
    $this->wp->removeAction('wp_head', 'noindex', 1);
    $this->wp->addAction('wp_head', [$this, 'setMetaRobots'], 1);
    $this->wp->addFilter('the_title', [$this, 'setPageTitle']);
    $this->wp->addFilter('single_post_title', [$this, 'setPageTitle']);
    $this->wp->addFilter('the_content', [$this, 'setPageContent']);
  }

public function setWindowTitle($title, $separator = '', $separatorLocation = 'right') {
    // If no separator is provided, just modify the entire title
    if (empty($separator)) {
      return $this->getPageTitle();
    }
    $titleParts = explode(" $separator ", $title);
    if (!is_array($titleParts)) {
      return $title;
    }

if ($separatorLocation === 'right') {
      // first part
      $titleParts[0] = $this->getPageTitle();
    } else {
      // last part
      $lastIndex = count($titleParts) - 1;
      $titleParts[$lastIndex] = $this->getPageTitle();
    }

return implode(" $separator ", $titleParts);
  }

public function setWindowTitleParts($meta = []) {
    $meta['title'] = $this->getPageTitle();
    return $meta;
  }

public function setMetaRobots() {
    echo '<meta name="robots" content="noindex,nofollow">';
  }

public function setPageTitle($title = '') {
    if ($title === Pages::PAGE_TITLE || $title === __('MailPoet Page', 'mailpoet')) {
      return $this->getPageTitle();
    }
    return $title;
  }

public function setPageContent($pageContent) {
    $this->assetsController->setupFrontEndDependencies();

// For preview, show a placeholder message since we don't have a real captcha session
    if (isset($this->data['preview']) && $this->data['preview']) {
      $content = '<div class="mailpoet_captcha_preview">' .
        '<p>' . __('This is a preview of the CAPTCHA page.', 'mailpoet') . '</p>' .
        '<p>' . __('When users need to verify they’re not a robot, the CAPTCHA form will be displayed here.', 'mailpoet') . '</p>' .
        '</div>';
    } else {
      $content = $this->formRenderer->render($this->data);
      if (!$content) {
        return false;
      }
    }

return str_replace('[mailpoet_page]', trim($content), $pageContent);
  }

private function getPageTitle() {
    return __('Confirm you’re not a robot', 'mailpoet');
  }
}

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