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wp-content/plugins/mailpoet/lib/Statistics/Track/SubscriberCookie.php

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+<?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing
+
+namespace MailPoet\Statistics\Track;
+
+if (!defined('ABSPATH')) exit;
+
+
+use MailPoet\Settings\TrackingConfig;
+use MailPoet\Util\Cookies;
+
+class SubscriberCookie {
+  const COOKIE_NAME = 'mailpoet_subscriber';
+  const COOKIE_NAME_LEGACY = 'mailpoet_abandoned_cart_tracking';
+  const COOKIE_EXPIRY = 10 * 365 * 24 * 60 * 60; // 10 years (~ no expiry)
+
+  /** @var Cookies */
+  private $cookies;
+
+  /** @var TrackingConfig */
+  private $trackingConfig;
+
+  public function __construct(
+    Cookies $cookies,
+    TrackingConfig $trackingConfig
+  ) {
+    $this->cookies = $cookies;
+    $this->trackingConfig = $trackingConfig;
+  }
+
+  public function getSubscriberId(): ?int {
+    if (!$this->trackingConfig->isCookieTrackingEnabled()) {
+      return null;
+    }
+
+    $subscriberId = $this->getSubscriberIdFromCookie(self::COOKIE_NAME);
+    if ($subscriberId) {
+      return $subscriberId;
+    }
+
+    $subscriberId = $this->getSubscriberIdFromCookie(self::COOKIE_NAME_LEGACY);
+    if ($subscriberId) {
+      $this->setSubscriberId($subscriberId);
+      $this->cookies->delete(self::COOKIE_NAME_LEGACY);
+      return $subscriberId;
+    }
+    return null;
+  }
+
+  public function setSubscriberId(int $subscriberId): void {
+    if (!$this->trackingConfig->isCookieTrackingEnabled()) {
+      return;
+    }
+
+    $this->cookies->set(
+      self::COOKIE_NAME,
+      ['subscriber_id' => $subscriberId],
+      [
+        'expires' => time() + self::COOKIE_EXPIRY,
+        'path' => '/',
+      ]
+    );
+  }
+
+  private function getSubscriberIdFromCookie(string $cookieName): ?int {
+    $data = $this->cookies->get($cookieName);
+    return is_array($data) && $data['subscriber_id']
+      ? (int)$data['subscriber_id']
+      : null;
+  }
+}