--- /dev/null
+<?php
+
+namespace Drupal\eu_cookie_compliance\Plugin;
+
+use Drupal\Core\Plugin\PluginBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+
+/**
+ * Provides a base class for a consent storage.
+ *
+ * @see \Drupal\eu_cookie_compliance\Plugin\ConsentStorageInterface
+ * @see \Drupal\eu_cookie_compliance\Plugin\ConsentStorageManager
+ * @see \Drupal\eu_cookie_compliance\Plugin\ConsentStorageManagerInterface
+ * @see plugin_api
+ */
+abstract class ConsentStorageBase extends PluginBase implements ConsentStorageInterface {
+
+ /**
+ * The config factory.
+ *
+ * Subclasses should use the self::config() method, which may be overridden to
+ * address specific needs when loading config, rather than this property
+ * directly. See \Drupal\Core\Form\ConfigFormBase::config() for an example of
+ * this.
+ *
+ * @var \Drupal\Core\Config\ConfigFactoryInterface
+ */
+ protected $configFactory;
+
+ /**
+ * Constructs a ConsentStorageBase object.
+ *
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param mixed $plugin_definition
+ * The plugin implementation definition.
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The factory for configuration objects.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $config_factory) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+ $this->configFactory = $config_factory;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $container->get('config.factory')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function label() {
+ return $this->pluginDefinition['label'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function description() {
+ return $this->pluginDefinition['description'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getStatus() {
+ return TRUE;
+ }
+
+ /**
+ * Get the current revision of the privacy policy node.
+ *
+ * @return bool|int
+ * Returns the latest revision ID of the curreny privacy policy node, or
+ * FALSE if no priacy policy exists.
+ *
+ * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
+ */
+ public function getCurrentPolicyNodeRevision() {
+ $config = $this->configFactory->get('eu_cookie_compliance.settings');
+ $cookie_policy_link = $config->get('popup_link');
+ $cookie_policy_drupal_path = \Drupal::service('path.alias_manager')->getPathByAlias($cookie_policy_link, \Drupal::languageManager()->getCurrentLanguage()->getId());
+ if (substr($cookie_policy_drupal_path, 0, 6) == '/node/') {
+ $node_id = explode('/', $cookie_policy_drupal_path)[2];
+ /* @var \Drupal\node\Entity\Node $node */
+ $node = \Drupal::entityTypeManager()->getStorage('node')->load($node_id);
+ return $node->getRevisionId();
+ }
+ else {
+ return FALSE;
+ }
+ }
+
+ /**
+ * Register consent.
+ *
+ * In addition to the parameters passed to the function, consider storing the
+ * uid, ip address, timestamp and the current revision of the cookie policy.
+ *
+ * @param string $consent_type
+ * "banner" if the consent is given to the cookie banner or the form ID when
+ * consent is given on a form.
+ *
+ * @return bool
+ * Returns TRUE when the consent has been stored successfully, FALSE on
+ * error.
+ */
+ abstract protected function registerConsent($consent_type);
+
+}