Implementation of the backend for the OAuth2 clients management

api/modules/oauth/controllers/AuthorizationController.php

@@ -0,0 +1,61 @@
+<?php
+namespace api\modules\oauth\controllers;
+
+use api\controllers\Controller;
+use api\modules\oauth\models\OauthProcess;
+use common\rbac\Permissions as P;
+use Yii;
+use yii\filters\AccessControl;
+use yii\helpers\ArrayHelper;
+
+class AuthorizationController extends Controller {
+
+    public function behaviors(): array {
+        return ArrayHelper::merge(Controller::behaviors(), [
+            'authenticator' => [
+                'only' => ['complete'],
+            ],
+            'access' => [
+                'class' => AccessControl::class,
+                'only' => ['complete'],
+                'rules' => [
+                    [
+                        'allow' => true,
+                        'actions' => ['complete'],
+                        'roles' => [P::COMPLETE_OAUTH_FLOW],
+                        'roleParams' => function() {
+                            return [
+                                'accountId' => Yii::$app->user->identity->getAccount()->id,
+                            ];
+                        },
+                    ],
+                ],
+            ],
+        ]);
+    }
+
+    public function verbs(): array {
+        return [
+            'validate' => ['GET'],
+            'complete' => ['POST'],
+            'token'    => ['POST'],
+        ];
+    }
+
+    public function actionValidate(): array {
+        return $this->createOauthProcess()->validate();
+    }
+
+    public function actionComplete(): array {
+        return $this->createOauthProcess()->complete();
+    }
+
+    public function actionToken(): array {
+        return $this->createOauthProcess()->getToken();
+    }
+
+    private function createOauthProcess(): OauthProcess {
+        return new OauthProcess(Yii::$app->oauth->authServer);
+    }
+
+}