Issue #3325602: Make the cookie set/get a service

src/LikeCookieHelper.php

+<?php
+
+namespace Drupal\like;
+
+use Drupal\Component\Serialization\Json;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * Like Cookie helper class.
+ */
+class LikeCookieHelper implements LikeCookieHelperInterface {
+
+  /**
+   * The request stack.
+   *
+   * @var \Symfony\Component\HttpFoundation\RequestStack
+   */
+  protected $requestStack;
+
+  /**
+   * Constructs a LikeCookieHelper object.
+   *
+   * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+   *   The request stack.
+   */
+  public function __construct(RequestStack $request_stack) {
+    $this->requestStack = $request_stack;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getLikeCookieData():array {
+    $cookie = $this->requestStack->getCurrentRequest()->cookies->get('Drupal_visitor_like');
+    return $cookie ? Json::decode($cookie) : [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setLikeCookieData($cookie_data):bool {
+    if (isset($this->requestStack->getCurrentRequest()->cookies)) {
+      $this->requestStack->getCurrentRequest()->cookies->set('Drupal_visitor_like', $cookie_data);
+    }
+    setrawcookie('Drupal.visitor.like', rawurlencode($cookie_data), $expire, '/');
+  }
+
+}