Added OIDC key type

README.md

@@ -15,6 +15,10 @@ drush pm:install os2web_key
 
 `@todo`
 
+### OpenID Connect
+
+`@todo`
+
 ## Example
 
 `@todo`

src/Plugin/KeyInput/OidcKeyInput.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Drupal\os2web_key\Plugin\KeyInput;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\key\Plugin\KeyInputBase;
+use Drupal\os2web_key\Plugin\KeyType\OidcKeyType;
+
+/**
+ * Input for OpenID Connect authentication.
+ *
+ * @KeyInput(
+ *   id = "os2web_key_oidc",
+ *   label = @Translation("OpenID Connect (OIDC)")
+ * )
+ */
+class OidcKeyInput extends KeyInputBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return [
+      OidcKeyType::DISCOVERY_URL => '',
+      OidcKeyType::CLIENT_ID => '',
+      OidcKeyType::CLIENT_SECRET => '',
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form[OidcKeyType::DISCOVERY_URL] = [
+      '#type' => 'url',
+      '#title' => $this->t('Discovery url'),
+      '#default_value' => $this->configuration[OidcKeyType::DISCOVERY_URL],
+      '#required' => TRUE,
+    ];
+
+    $form[OidcKeyType::CLIENT_ID] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Client ID'),
+      '#default_value' => $this->configuration[OidcKeyType::CLIENT_ID],
+      '#required' => TRUE,
+    ];
+
+    $form[OidcKeyType::CLIENT_SECRET] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Client Secret'),
+      '#default_value' => $this->configuration[OidcKeyType::CLIENT_SECRET],
+      '#required' => TRUE,
+    ];
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processSubmittedKeyValue(FormStateInterface $form_state) {
+    $values = $form_state->getValues();
+    return [
+      'submitted' => $values,
+      'processed_submitted' => $values,
+    ];
+  }
+
+}

src/Plugin/KeyType/OidcKeyType.php

@@ -0,0 +1,97 @@
+<?php
+
+namespace Drupal\os2web_key\Plugin\KeyType;
+
+use Drupal\Component\Serialization\Json;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\key\Plugin\KeyTypeBase;
+use Drupal\key\Plugin\KeyTypeMultivalueInterface;
+
+/**
+ * Defines a custom key type for OpenID Connect authentication.
+ *
+ * @KeyType(
+ *   id = "os2web_key_oidc",
+ *   label = @Translation("OpenID Connect (OIDC)"),
+ *   description = @Translation("A set of credentials for a OpenID Connect."),
+ *   group = "authentication",
+ *   key_value = {
+ *     "plugin" = "os2web_key_oidc",
+ *     "accepted" = FALSE,
+ *   },
+ *   multivalue = {
+ *     "enabled" = true,
+ *     "fields" = {
+ *        "discovery_url" = {
+ *          "label" = @Translation("Discovery url"),
+ *          "required" = true
+ *        },
+ *       "client_id" = {
+ *         "label" = @Translation("Client ID"),
+ *         "required" = true
+ *       },
+ *       "client_secret" = {
+ *         "label" = @Translation("Client secret"),
+ *         "required" = true
+ *       },
+ *     }
+ *   }
+ * )
+ */
+class OidcKeyType extends KeyTypeBase implements KeyTypeMultivalueInterface {
+  public const DISCOVERY_URL = 'discovery_url';
+  public const CLIENT_ID = 'client_id';
+  public const CLIENT_SECRET = 'client_secret';
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function generateKeyValue(array $configuration) {
+    return Json::encode($configuration);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateKeyValue(array $form, FormStateInterface $form_state, $key_value): void {
+    if (empty($key_value)) {
+      $form_state->setError($form, $this->t('The key value is empty.'));
+      return;
+    }
+
+    $definition = $this->getPluginDefinition();
+    $fields = $definition['multivalue']['fields'];
+
+    foreach ($fields as $id => $field) {
+      if (!is_array($field)) {
+        $field = ['label' => $field];
+      }
+
+      if (isset($field['required']) && $field['required'] === FALSE) {
+        continue;
+      }
+
+      if (!isset($key_value[$id])) {
+        $form_state->setError($form, $this->t('The key value is missing the field %field.', ['%field' => $id]));
+      }
+      elseif (empty($key_value[$id])) {
+        $form_state->setError($form, $this->t('The key value field %field is empty.', ['%field' => $id]));
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function serialize(array $array) {
+    return Json::encode($array);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function unserialize($value) {
+    return Json::decode($value);
+  }
+
+}