<?php
namespace MailPoet\Subscribers\ImportExport\PersonalDataExporters;

use MailPoet\Models\StatisticsClicks;
use MailPoet\Models\Subscriber;
use MailPoet\WP\Functions as WPFunctions;

class NewsletterClicksExporter {

  const LIMIT = 100;

  function export($email, $page = 1) {
    $data = $this->exportSubscriber(Subscriber::findOne(trim($email)), $page);
    return [
      'data' => $data,
      'done' => count($data) < self::LIMIT,
    ];
  }

  private function exportSubscriber($subscriber, $page) {
    if (!$subscriber) return [];

    $result = [];

    $statistics = StatisticsClicks::getAllForSubscriber($subscriber)
       ->limit(self::LIMIT)
       ->offset(self::LIMIT * ($page - 1))
       ->findArray();

    foreach ($statistics as $row) {
      $result[] = $this->exportNewsletter($row);
    }

    return $result;
  }

  private function exportNewsletter($row) {
    $newsletter_data = [];
    $newsletter_data[] = [
      'name' => WPFunctions::get()->__('Email subject', 'mailpoet'),
      'value' => $row['newsletter_rendered_subject'],
    ];
    $newsletter_data[] = [
      'name' => WPFunctions::get()->__('Timestamp of the click event', 'mailpoet'),
      'value' => $row['created_at'],
    ];
    $newsletter_data[] = [
      'name' => WPFunctions::get()->__('URL', 'mailpoet'),
      'value' => $row['url'],
    ];
    return [
      'group_id' => 'mailpoet-newsletter-clicks',
      'group_label' => WPFunctions::get()->__('MailPoet Emails Clicks', 'mailpoet'),
      'item_id' => 'newsletter-' . $row['id'],
      'data' => $newsletter_data,
    ];
  }

}