diff --git a/api/config/main.php b/api/config/main.php
index 45ed653..d952cc3 100644
--- a/api/config/main.php
+++ b/api/config/main.php
@@ -13,8 +13,9 @@ return [
     'controllerNamespace' => 'api\controllers',
     'components' => [
         'user' => [
-            'identityClass' => 'common\models\Account',
+            'identityClass' => \common\models\Account::class,
             'enableAutoLogin' => true,
+            'loginUrl' => null,
         ],
         'log' => [
             'traceLevel' => YII_DEBUG ? 3 : 0,
@@ -42,6 +43,10 @@ return [
         'response' => [
             'format' => \yii\web\Response::FORMAT_JSON,
         ],
+        'oauth' => [
+            'class' => \common\components\oauth\Component::class,
+            'grantTypes' => ['authorization_code'],
+        ],
     ],
     'params' => $params,
 ];
diff --git a/api/controllers/Controller.php b/api/controllers/Controller.php
index 1e02157..1932f13 100644
--- a/api/controllers/Controller.php
+++ b/api/controllers/Controller.php
@@ -2,12 +2,14 @@
 namespace api\controllers;
 
 use api\traits\ApiNormalize;
+use Yii;
 
+/**
+ * @property \common\models\Account|null $account
+ */
 class Controller extends \yii\rest\Controller {
     use ApiNormalize;
 
-    public $enableCsrfValidation = true;
-
     public function behaviors() {
         $parentBehaviors = parent::behaviors();
         // xml нам не понадобится
@@ -16,4 +18,11 @@ class Controller extends \yii\rest\Controller {
         return $parentBehaviors;
     }
 
+    /**
+     * @return \common\models\Account|null
+     */
+    public function getAccount() {
+        return Yii::$app->getUser()->getIdentity();
+    }
+
 }
diff --git a/api/controllers/OauthController.php b/api/controllers/OauthController.php
new file mode 100644
index 0000000..3aa937c
--- /dev/null
+++ b/api/controllers/OauthController.php
@@ -0,0 +1,219 @@
+<?php
+namespace api\controllers;
+
+use common\components\oauth\Exception\AcceptRequiredException;
+use common\components\oauth\Exception\AccessDeniedException;
+use common\models\OauthClient;
+use League\OAuth2\Server\Exception\OAuthException;
+use Yii;
+use yii\filters\AccessControl;
+use yii\helpers\ArrayHelper;
+
+class OauthController extends Controller {
+
+    public function behaviors() {
+        return array_merge(parent::behaviors(), [
+            'access' => [
+                'class' => AccessControl::class,
+                'rules' => [
+                    [
+                        'actions' => ['validate'],
+                        'allow' => true,
+                    ],
+                    [
+                        'actions' => ['complete'],
+                        'allow' => true,
+                        'roles' => ['@'],
+                    ],
+                ],
+            ],
+        ]);
+    }
+
+    public function verbs() {
+        return [
+            'validate' => ['GET'],
+            'complete' => ['POST'],
+        ];
+    }
+
+    /**
+     * @return \League\OAuth2\Server\AuthorizationServer
+     */
+    protected function getServer() {
+        /** @var \common\components\oauth\Component $oauth */
+        $oauth = Yii::$app->get('oauth');
+        return $oauth->authServer;
+    }
+
+    /**
+     * @return \League\OAuth2\Server\Grant\AuthCodeGrant
+     */
+    protected function getGrantType() {
+        return $this->getServer()->getGrantType('authorization_code');
+    }
+
+    /**
+     * Запрос, который должен проверить переданные параметры oAuth авторизации
+     * и сформировать ответ для нашего приложения на фронте
+     *
+     * Входными данными является стандартный список GET параметров по стандарту oAuth:
+     * $_GET = [
+     *     client_id,
+     *     redirect_uri,
+     *     response_type,
+     *     scope,
+     *     state,
+     * ]
+     *
+     * Кроме того можно передать значения description для переопределения описания приложения.
+     *
+     * @return array|\yii\web\Response
+     */
+    public function actionValidate() {
+        try {
+            $authParams = $this->getGrantType()->checkAuthorizeParams();
+            /** @var \League\OAuth2\Server\Entity\ClientEntity $client */
+            $client = $authParams['client'];
+            /** @var \common\models\OauthClient $clientModel */
+            $clientModel = OauthClient::findOne($client->getId());
+            $response = $this->buildSuccessResponse(
+                Yii::$app->request->getQueryParams(),
+                $clientModel,
+                $authParams['scopes']
+            );
+        } catch (OAuthException $e) {
+            $response = $this->buildErrorResponse($e);
+        }
+
+        return $response;
+    }
+
+    /**
+     * Метод выполняется генерацию авторизационного кода (auth_code) и формирование ссылки
+     * для дальнейшнешл редиректа пользователя назад на сайт клиента
+     *
+     * Входными данными является всё те же параметры, что были необходимы для валидации:
+     * $_GET = [
+     *     client_id,
+     *     redirect_uri,
+     *     response_type,
+     *     scope,
+     *     state,
+     * ];
+     * А также поле accept, которое показывает, что пользователь нажал на кнопку "Принять". Если поле присутствует,
+     * то оно будет интерпретироваться как любое приводимое к false значение. В ином случае, значение будет
+     * интерпретировано, как положительный исход.
+     *
+     * @return array|\yii\web\Response
+     */
+    public function actionComplete() {
+        $grant = $this->getGrantType();
+        try {
+            $authParams = $grant->checkAuthorizeParams();
+            $account = $this->getAccount();
+            /** @var \League\OAuth2\Server\Entity\ClientEntity $client */
+            $client = $authParams['client'];
+            /** @var \common\models\OauthClient $clientModel */
+            $clientModel = OauthClient::findOne($client->getId());
+
+            if (!$account->canAutoApprove($clientModel, $authParams['scopes'])) {
+                $isAccept = Yii::$app->request->post('accept');
+                if ($isAccept === null) {
+                    throw new AcceptRequiredException();
+                }
+
+                if (!$isAccept) {
+                    throw new AccessDeniedException($authParams['redirect_uri']);
+                }
+            }
+
+            $redirectUri = $grant->newAuthorizeRequest('user', $account->id, $authParams);
+            $response = [
+                'success' => true,
+                'redirectUri' => $redirectUri,
+            ];
+        } catch (OAuthException $e) {
+            $response = $this->buildErrorResponse($e);
+        }
+
+        return $response;
+    }
+
+    /**
+     * Метод выполняется сервером приложения, которому был выдан auth_token.
+     *
+     * Входными данными является стандартный список GET параметров по стандарту oAuth:
+     * $_GET = [
+     *     client_id,
+     *     client_secret,
+     *     redirect_uri,
+     *     code|refresh_token,
+     *     grant_type,
+     * ]
+     *
+     * @return array
+     */
+    public function actionIssueToken() {
+        try {
+            $response = $this->getServer()->issueAccessToken();
+        } catch (OAuthException $e) {
+            Yii::$app->response->statusCode = $e->httpStatusCode;
+            $response = [
+                'error' => $e->errorType,
+                'message' => $e->getMessage(),
+            ];
+        }
+
+        return $response;
+    }
+
+    /**
+     * @param array $queryParams
+     * @param OauthClient $clientModel
+     * @param \League\OAuth2\Server\Entity\ScopeEntity[] $scopes
+     *
+     * @return array
+     */
+    private function buildSuccessResponse($queryParams, OauthClient $clientModel, $scopes) {
+        return [
+            'success' => true,
+            // Возвращаем только те ключи, которые имеют реальное отношение к oAuth параметрам
+            'oAuth' => array_intersect_key($queryParams, array_flip([
+                'client_id',
+                'redirect_uri',
+                'response_type',
+                'scope',
+                'state',
+            ])),
+            'client' => [
+                'id' => $clientModel->id,
+                'name' => $clientModel->name,
+                'description' => ArrayHelper::getValue($queryParams, 'description', $clientModel->description),
+            ],
+            'session' => [
+                'scopes' => array_keys($scopes),
+            ],
+        ];
+    }
+
+    private function buildErrorResponse(OAuthException $e) {
+        $response = [
+            'success' => false,
+            'error' => $e->errorType,
+            'parameter' => $e->parameter,
+            'statusCode' => $e->httpStatusCode,
+        ];
+
+        if ($e->shouldRedirect()) {
+            $response['redirectUri'] = $e->getRedirectUri();
+        }
+
+        if ($e->httpStatusCode !== 200) {
+            Yii::$app->response->setStatusCode($e->httpStatusCode);
+        }
+
+        return $response;
+    }
+
+}
diff --git a/api/models/RegistrationForm.php b/api/models/RegistrationForm.php
index 0878d4d..0926189 100644
--- a/api/models/RegistrationForm.php
+++ b/api/models/RegistrationForm.php
@@ -18,7 +18,7 @@ class RegistrationForm extends BaseApiForm {
 
     public function rules() {
         return [
-            ['rulesAgreement', 'boolean', 'message' => 'error.you_must_accept_rules'],
+            ['rulesAgreement', 'required', 'message' => 'error.you_must_accept_rules'],
             [[], ReCaptchaValidator::class, 'message' => 'error.captcha_invalid', 'when' => !YII_ENV_TEST],
 
             ['username', 'filter', 'filter' => 'trim'],
diff --git a/api/models/SignupForm.php b/api/models/SignupForm.php
deleted file mode 100644
index ab419e1..0000000
--- a/api/models/SignupForm.php
+++ /dev/null
@@ -1,58 +0,0 @@
-<?php
-namespace api\models;
-
-use common\models\Account;
-use yii\base\Model;
-use Yii;
-
-/**
- * Signup form
- */
-class SignupForm extends Model
-{
-    public $username;
-    public $email;
-    public $password;
-
-    /**
-     * @inheritdoc
-     */
-    public function rules()
-    {
-        return [
-            ['username', 'filter', 'filter' => 'trim'],
-            ['username', 'required'],
-            ['username', 'unique', 'targetClass' => '\common\models\User', 'message' => 'This username has already been taken.'],
-            ['username', 'string', 'min' => 2, 'max' => 255],
-
-            ['email', 'filter', 'filter' => 'trim'],
-            ['email', 'required'],
-            ['email', 'email'],
-            ['email', 'string', 'max' => 255],
-            ['email', 'unique', 'targetClass' => '\common\models\User', 'message' => 'This email address has already been taken.'],
-
-            ['password', 'required'],
-            ['password', 'string', 'min' => 6],
-        ];
-    }
-
-    /**
-     * Signs user up.
-     *
-     * @return Account|null the saved model or null if saving fails
-     */
-    public function signup()
-    {
-        if ($this->validate()) {
-            $user = new Account();
-            $user->email = $this->email;
-            $user->setPassword($this->password);
-            $user->generateAuthKey();
-            if ($user->save()) {
-                return $user;
-            }
-        }
-
-        return null;
-    }
-}
diff --git a/common/components/oauth/Component.php b/common/components/oauth/Component.php
new file mode 100644
index 0000000..9fe54a3
--- /dev/null
+++ b/common/components/oauth/Component.php
@@ -0,0 +1,63 @@
+<?php
+namespace common\components\oauth;
+
+use common\components\oauth\Storage\Redis\AuthCodeStorage;
+use common\components\oauth\Storage\Yii2\AccessTokenStorage;
+use common\components\oauth\Storage\Yii2\ClientStorage;
+use common\components\oauth\Storage\Yii2\ScopeStorage;
+use common\components\oauth\Storage\Yii2\SessionStorage;
+use League\OAuth2\Server\AuthorizationServer;
+use yii\base\InvalidConfigException;
+
+/**
+ * @property AuthorizationServer $authServer
+ */
+class Component extends \yii\base\Component {
+
+    /**
+     * @var AuthorizationServer
+     */
+    private $_authServer;
+
+    /**
+     * @var string[]
+     */
+    public $grantTypes = [];
+
+    /**
+     * @var array grant type => class
+     */
+    public $grantMap = [
+        'authorization_code' => 'League\OAuth2\Server\Grant\AuthCodeGrant',
+        'client_credentials' => 'League\OAuth2\Server\Grant\ClientCredentialsGrant',
+        'password'           => 'League\OAuth2\Server\Grant\PasswordGrant',
+        'refresh_token'      => 'League\OAuth2\Server\Grant\RefreshTokenGrant'
+    ];
+
+    public function getAuthServer() {
+        if ($this->_authServer === null) {
+            $authServer = new AuthorizationServer();
+            $authServer
+                ->setAccessTokenStorage(new AccessTokenStorage())
+                ->setClientStorage(new ClientStorage())
+                ->setScopeStorage(new ScopeStorage())
+                ->setSessionStorage(new SessionStorage())
+                ->setAuthCodeStorage(new AuthCodeStorage())
+                ->setScopeDelimiter(',');
+
+            $this->_authServer = $authServer;
+
+            foreach ($this->grantTypes as $grantType) {
+                if (!array_key_exists($grantType, $this->grantMap)) {
+                    throw new InvalidConfigException('Invalid grant type');
+                }
+
+                $grant = new $this->grantMap[$grantType]();
+                $this->_authServer->addGrantType($grant);
+            }
+        }
+
+        return $this->_authServer;
+    }
+
+}
diff --git a/common/components/oauth/Entity/AccessTokenEntity.php b/common/components/oauth/Entity/AccessTokenEntity.php
new file mode 100644
index 0000000..3501d82
--- /dev/null
+++ b/common/components/oauth/Entity/AccessTokenEntity.php
@@ -0,0 +1,27 @@
+<?php
+namespace common\components\oauth\Entity;
+
+use League\OAuth2\Server\Entity\EntityTrait;
+use League\OAuth2\Server\Entity\SessionEntity;
+
+class AccessTokenEntity extends \League\OAuth2\Server\Entity\AccessTokenEntity {
+    use EntityTrait;
+
+    protected $sessionId;
+
+    public function getSessionId() {
+        return $this->sessionId;
+    }
+
+    /**
+     * @inheritdoc
+     * @return static
+     */
+    public function setSession(SessionEntity $session) {
+        parent::setSession($session);
+        $this->sessionId = $session->getId();
+
+        return $this;
+    }
+
+}
diff --git a/common/components/oauth/Entity/AuthCodeEntity.php b/common/components/oauth/Entity/AuthCodeEntity.php
new file mode 100644
index 0000000..6bd8b0c
--- /dev/null
+++ b/common/components/oauth/Entity/AuthCodeEntity.php
@@ -0,0 +1,27 @@
+<?php
+namespace common\components\oauth\Entity;
+
+use League\OAuth2\Server\Entity\EntityTrait;
+use League\OAuth2\Server\Entity\SessionEntity;
+
+class AuthCodeEntity extends \League\OAuth2\Server\Entity\AuthCodeEntity {
+    use EntityTrait;
+
+    protected $sessionId;
+
+    public function getSessionId() {
+        return $this->sessionId;
+    }
+
+    /**
+     * @inheritdoc
+     * @return static
+     */
+    public function setSession(SessionEntity $session) {
+        parent::setSession($session);
+        $this->sessionId = $session->getId();
+
+        return $this;
+    }
+
+}
diff --git a/common/components/oauth/Entity/SessionEntity.php b/common/components/oauth/Entity/SessionEntity.php
new file mode 100644
index 0000000..28fafb5
--- /dev/null
+++ b/common/components/oauth/Entity/SessionEntity.php
@@ -0,0 +1,27 @@
+<?php
+namespace common\components\oauth\Entity;
+
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\EntityTrait;
+
+class SessionEntity extends \League\OAuth2\Server\Entity\SessionEntity {
+    use EntityTrait;
+
+    protected $clientId;
+
+    public function getClientId() {
+        return $this->clientId;
+    }
+
+    /**
+     * @inheritdoc
+     * @return static
+     */
+    public function associateClient(ClientEntity $client) {
+        parent::associateClient($client);
+        $this->clientId = $client->getId();
+
+        return $this;
+    }
+
+}
diff --git a/common/components/oauth/Exception/AcceptRequiredException.php b/common/components/oauth/Exception/AcceptRequiredException.php
new file mode 100644
index 0000000..36c5bf0
--- /dev/null
+++ b/common/components/oauth/Exception/AcceptRequiredException.php
@@ -0,0 +1,22 @@
+<?php
+namespace common\components\oauth\Exception;
+
+use League\OAuth2\Server\Exception\OAuthException;
+
+class AcceptRequiredException extends OAuthException {
+
+    public $httpStatusCode = 401;
+
+    /**
+     * {@inheritdoc}
+     */
+    public $errorType = 'accept_required';
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __construct() {
+        parent::__construct('Client must accept authentication request.');
+    }
+
+}
diff --git a/common/components/oauth/Exception/AccessDeniedException.php b/common/components/oauth/Exception/AccessDeniedException.php
new file mode 100644
index 0000000..2d12d6d
--- /dev/null
+++ b/common/components/oauth/Exception/AccessDeniedException.php
@@ -0,0 +1,11 @@
+<?php
+namespace common\components\oauth\Exception;
+
+class AccessDeniedException extends \League\OAuth2\Server\Exception\AccessDeniedException {
+
+    public function __construct($redirectUri = null) {
+        parent::__construct();
+        $this->redirectUri = $redirectUri;
+    }
+
+}
diff --git a/common/components/oauth/Storage/Redis/AuthCodeStorage.php b/common/components/oauth/Storage/Redis/AuthCodeStorage.php
new file mode 100644
index 0000000..8e75e7f
--- /dev/null
+++ b/common/components/oauth/Storage/Redis/AuthCodeStorage.php
@@ -0,0 +1,84 @@
+<?php
+namespace common\components\oauth\Storage\Redis;
+
+use common\components\oauth\Entity\AuthCodeEntity;
+use common\components\redis\Key;
+use common\components\redis\Set;
+use League\OAuth2\Server\Entity\AuthCodeEntity as OriginalAuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\AuthCodeInterface;
+
+class AuthCodeStorage extends AbstractStorage implements AuthCodeInterface {
+
+    public $dataTable = 'oauth_auth_codes';
+
+    public $ttl = 3600; // 1h
+
+    /**
+     * @inheritdoc
+     */
+    public function get($code) {
+        $result = (new Key($this->dataTable, $code))->getValue();
+        if (!$result) {
+            return null;
+        }
+
+        if ($result['expire_time'] < time()) {
+            return null;
+        }
+
+        return (new AuthCodeEntity($this->server))->hydrate([
+            'id' => $result['id'],
+            'redirectUri' => $result['client_redirect_uri'],
+            'expireTime' => $result['expire_time'],
+            'sessionId' => $result['sessionId'],
+        ]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function create($token, $expireTime, $sessionId, $redirectUri) {
+        $payload = [
+            'id' => $token,
+            'expire_time' => $expireTime,
+            'session_id' => $sessionId,
+            'client_redirect_uri' => $redirectUri,
+        ];
+
+        (new Key($this->dataTable, $token))->setValue($payload)->expire($this->ttl);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getScopes(OriginalAuthCodeEntity $token) {
+        $result = (new Set($this->dataTable, $token->getId(), 'scopes'));
+        $response = [];
+        foreach ($result as $scope) {
+            // TODO: нужно проверить все выданные скоупы на их существование
+            $response[] = (new ScopeEntity($this->server))->hydrate(['id' => $scope]);
+        }
+
+        return $response;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function associateScope(OriginalAuthCodeEntity $token, ScopeEntity $scope) {
+        (new Set($this->dataTable, $token->getId(), 'scopes'))->add($scope->getId())->expire($this->ttl);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function delete(OriginalAuthCodeEntity $token) {
+        // Удаляем ключ
+        (new Set($this->dataTable, $token->getId()))->delete();
+        // Удаляем список скоупов для ключа
+        (new Set($this->dataTable, $token->getId(), 'scopes'))->delete();
+    }
+
+}
diff --git a/common/components/oauth/Storage/Redis/RefreshTokenStorage.php b/common/components/oauth/Storage/Redis/RefreshTokenStorage.php
new file mode 100644
index 0000000..2736f78
--- /dev/null
+++ b/common/components/oauth/Storage/Redis/RefreshTokenStorage.php
@@ -0,0 +1,48 @@
+<?php
+namespace Fahmiardi\OAuth2\Server\Storage\Redis;
+
+use common\components\redis\Key;
+use League\OAuth2\Server\Entity\RefreshTokenEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\RefreshTokenInterface;
+
+class RefreshTokenStorage extends AbstractStorage implements RefreshTokenInterface {
+
+    public $dataTable = 'oauth_refresh_tokens';
+
+    /**
+     * @inheritdoc
+     */
+    public function get($token) {
+        $result = (new Key($this->dataTable, $token))->getValue();
+        if (!$result) {
+            return null;
+        }
+
+        return (new RefreshTokenEntity($this->server))
+            ->setId($result['id'])
+            ->setExpireTime($result['expire_time'])
+            ->setAccessTokenId($result['access_token_id']);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function create($token, $expireTime, $accessToken) {
+        $payload = [
+            'id' => $token,
+            'expire_time' => $expireTime,
+            'access_token_id' => $accessToken,
+        ];
+
+        (new Key($this->dataTable, $token))->setValue($payload);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function delete(RefreshTokenEntity $token) {
+        (new Key($this->dataTable, $token->getId()))->delete();
+    }
+
+}
diff --git a/common/components/oauth/Storage/Yii2/AccessTokenStorage.php b/common/components/oauth/Storage/Yii2/AccessTokenStorage.php
new file mode 100644
index 0000000..311d81c
--- /dev/null
+++ b/common/components/oauth/Storage/Yii2/AccessTokenStorage.php
@@ -0,0 +1,85 @@
+<?php
+namespace common\components\oauth\Storage\Yii2;
+
+use common\components\oauth\Entity\AccessTokenEntity;
+use common\models\OauthAccessToken;
+use League\OAuth2\Server\Entity\AccessTokenEntity as OriginalAccessTokenEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\AccessTokenInterface;
+use yii\db\Exception;
+
+class AccessTokenStorage extends AbstractStorage implements AccessTokenInterface {
+
+    private $cache = [];
+
+    /**
+     * @param string $token
+     * @return OauthAccessToken|null
+     */
+    private function getTokenModel($token) {
+        if (isset($this->cache[$token])) {
+            $this->cache[$token] = OauthAccessToken::findOne($token);
+        }
+
+        return $this->cache[$token];
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function get($token) {
+        $model = $this->getTokenModel($token);
+        if ($model === null) {
+            return null;
+        }
+
+        return (new AccessTokenEntity($this->server))->hydrate([
+            'id' => $model->access_token,
+            'expireTime' => $model->expire_time,
+            'sessionId' => $model->session_id,
+        ]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getScopes(OriginalAccessTokenEntity $token) {
+        $entities = [];
+        foreach($this->getTokenModel($token->getId())->getScopes() as $scope) {
+            $entities[] = (new ScopeEntity($this->server))->hydrate(['id' => $scope]);
+        }
+
+        return $entities;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function create($token, $expireTime, $sessionId) {
+        $model = new OauthAccessToken([
+            'access_token' => $token,
+            'expire_time' => $expireTime,
+            'session_id' => $sessionId,
+        ]);
+
+        if (!$model->save()) {
+            throw new Exception('Cannot save ' . OauthAccessToken::class . ' model.');
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function associateScope(OriginalAccessTokenEntity $token, ScopeEntity $scope) {
+        $this->getTokenModel($token->getId())->getScopes()->add($scope->getId());
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function delete(OriginalAccessTokenEntity $token) {
+        $this->getTokenModel($token->getId())->delete();
+    }
+
+}
diff --git a/common/components/oauth/Storage/Yii2/ClientStorage.php b/common/components/oauth/Storage/Yii2/ClientStorage.php
new file mode 100644
index 0000000..51aa1a3
--- /dev/null
+++ b/common/components/oauth/Storage/Yii2/ClientStorage.php
@@ -0,0 +1,73 @@
+<?php
+namespace common\components\oauth\Storage\Yii2;
+
+use common\components\oauth\Entity\SessionEntity;
+use common\models\OauthClient;
+use League\OAuth2\Server\Entity\ClientEntity;
+use League\OAuth2\Server\Entity\SessionEntity as OriginalSessionEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\ClientInterface;
+
+class ClientStorage extends AbstractStorage implements ClientInterface {
+
+    /**
+     * @inheritdoc
+     */
+    public function get($clientId, $clientSecret = null, $redirectUri = null, $grantType = null) {
+        $query = OauthClient::find()
+            ->select(['id', 'name', 'secret'])
+            ->where([OauthClient::tableName() . '.id' => $clientId]);
+
+        if ($clientSecret !== null) {
+            $query->andWhere(['secret' => $clientSecret]);
+        }
+
+        if ($redirectUri !== null) {
+            $query
+                ->addSelect(['redirect_uri'])
+                ->andWhere(['redirect_uri' => $redirectUri]);
+        }
+
+        $model = $query->asArray()->one();
+        if ($model === null) {
+            return null;
+        }
+
+        $entity = new ClientEntity($this->server);
+        $entity->hydrate([
+            'id' => $model['id'],
+            'name' => $model['name'],
+            'secret' => $model['secret'],
+        ]);
+
+        if (isset($model['redirect_uri'])) {
+            $entity->hydrate([
+                'redirectUri' => $model['redirect_uri'],
+            ]);
+        }
+
+        return $entity;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getBySession(OriginalSessionEntity $session) {
+        if (!$session instanceof SessionEntity) {
+            throw new \ErrorException('This module assumes that $session typeof ' . SessionEntity::class);
+        }
+
+        $model = OauthClient::find()
+            ->select(['id', 'name'])
+            ->andWhere(['id' => $session->getClientId()])
+            ->asArray()
+            ->one();
+
+        if ($model === null) {
+            return null;
+        }
+
+        return (new ClientEntity($this->server))->hydrate($model);
+    }
+
+}
diff --git a/common/components/oauth/Storage/Yii2/ScopeStorage.php b/common/components/oauth/Storage/Yii2/ScopeStorage.php
new file mode 100644
index 0000000..64fef0e
--- /dev/null
+++ b/common/components/oauth/Storage/Yii2/ScopeStorage.php
@@ -0,0 +1,26 @@
+<?php
+namespace common\components\oauth\Storage\Yii2;
+
+use common\models\OauthScope;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\ScopeInterface;
+
+class ScopeStorage extends AbstractStorage implements ScopeInterface {
+
+    /**
+     * @inheritdoc
+     */
+    public function get($scope, $grantType = null, $clientId = null) {
+        $row = OauthScope::find()->andWhere(['id' => $scope])->asArray()->one();
+        if ($row === null) {
+            return null;
+        }
+
+        $entity = new ScopeEntity($this->server);
+        $entity->hydrate($row);
+
+        return $entity;
+    }
+
+}
diff --git a/common/components/oauth/Storage/Yii2/SessionStorage.php b/common/components/oauth/Storage/Yii2/SessionStorage.php
new file mode 100644
index 0000000..0686977
--- /dev/null
+++ b/common/components/oauth/Storage/Yii2/SessionStorage.php
@@ -0,0 +1,125 @@
+<?php
+namespace common\components\oauth\Storage\Yii2;
+
+use common\components\oauth\Entity\AuthCodeEntity;
+use common\components\oauth\Entity\SessionEntity;
+use common\models\OauthSession;
+use League\OAuth2\Server\Entity\AccessTokenEntity as OriginalAccessTokenEntity;
+use League\OAuth2\Server\Entity\AuthCodeEntity as OriginalAuthCodeEntity;
+use League\OAuth2\Server\Entity\ScopeEntity;
+use League\OAuth2\Server\Entity\SessionEntity as OriginalSessionEntity;
+use League\OAuth2\Server\Storage\AbstractStorage;
+use League\OAuth2\Server\Storage\SessionInterface;
+use yii\db\ActiveQuery;
+use yii\db\Exception;
+
+class SessionStorage extends AbstractStorage implements SessionInterface {
+
+    private $cache = [];
+
+    /**
+     * @param string $sessionId
+     * @return OauthSession|null
+     */
+    private function getSessionModel($sessionId) {
+        if (!isset($this->cache[$sessionId])) {
+            $this->cache[$sessionId] = OauthSession::findOne($sessionId);
+        }
+
+        return $this->cache[$sessionId];
+    }
+
+    private function hydrateEntity($sessionModel) {
+        if (!$sessionModel instanceof OauthSession) {
+            return null;
+        }
+
+        return (new SessionEntity($this->server))->hydrate([
+            'id' => $sessionModel->id,
+            'client_id' => $sessionModel->client_id,
+        ])->setOwner($sessionModel->owner_type, $sessionModel->owner_id);
+    }
+
+    /**
+     * @param string $sessionId
+     * @return SessionEntity|null
+     */
+    public function getSession($sessionId) {
+        return $this->hydrateEntity($this->getSessionModel($sessionId));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getByAccessToken(OriginalAccessTokenEntity $accessToken) {
+        /** @var OauthSession|null $model */
+        $model = OauthSession::find()->innerJoinWith([
+            'accessTokens' => function(ActiveQuery $query) use ($accessToken) {
+                $query->andWhere(['access_token' => $accessToken->getId()]);
+            },
+        ])->one();
+
+        return $this->hydrateEntity($model);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getByAuthCode(OriginalAuthCodeEntity $authCode) {
+        if (!$authCode instanceof AuthCodeEntity) {
+            throw new \ErrorException('This module assumes that $authCode typeof ' . AuthCodeEntity::class);
+        }
+
+        return $this->getSession($authCode->getSessionId());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getScopes(OriginalSessionEntity $session) {
+        $result = [];
+        foreach ($this->getSessionModel($session->getId())->getScopes() as $scope) {
+            // TODO: нужно проверить все выданные скоупы на их существование
+            $result[] = (new ScopeEntity($this->server))->hydrate(['id' => $scope]);
+        }
+
+        return $result;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function create($ownerType, $ownerId, $clientId, $clientRedirectUri = null) {
+        $sessionId = OauthSession::find()
+            ->select('id')
+            ->andWhere([
+                'client_id' => $clientId,
+                'owner_type' => $ownerType,
+                'owner_id' => $ownerId,
+            ])->scalar();
+
+        if ($sessionId === false) {
+            $model = new OauthSession([
+                'client_id' => $clientId,
+                'owner_type' => $ownerType,
+                'owner_id' => $ownerId,
+            ]);
+
+            if (!$model->save()) {
+                throw new Exception('Cannot save ' . OauthSession::class . ' model.');
+            }
+
+            $sessionId = $model->id;
+        }
+
+        return $sessionId;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function associateScope(OriginalSessionEntity $session, ScopeEntity $scope) {
+        $this->getSessionModel($session->getId())->getScopes()->add($scope->getId());
+    }
+
+}
diff --git a/common/components/redis/Key.php b/common/components/redis/Key.php
new file mode 100644
index 0000000..1b1f951
--- /dev/null
+++ b/common/components/redis/Key.php
@@ -0,0 +1,58 @@
+<?php
+namespace common\components\redis;
+
+use InvalidArgumentException;
+use Yii;
+
+class Key {
+
+    protected $key;
+
+    /**
+     * @return \yii\redis\Connection
+     */
+    public function getRedis() {
+        return Yii::$app->get('redis');
+    }
+
+    public function getKey() {
+        return $this->key;
+    }
+
+    public function getValue() {
+        return $this->getRedis()->get(json_decode($this->key));
+    }
+
+    public function setValue($value) {
+        $this->getRedis()->set($this->key, json_encode($value, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));
+        return $this;
+    }
+
+    public function delete() {
+        $this->getRedis()->executeCommand('DEL', [$this->key]);
+        return $this;
+    }
+
+    public function expire($ttl) {
+        $this->getRedis()->executeCommand('EXPIRE', [$this->key, $ttl]);
+        return $this;
+    }
+
+    private function buildKey(array $parts) {
+        $keyParts = [];
+        foreach($parts as $part) {
+            $keyParts[] = str_replace('_', ':', $part);
+        }
+
+        return implode(':', $keyParts);
+    }
+
+    public function __construct(...$key) {
+        if (empty($key)) {
+            throw new InvalidArgumentException('You must specify at least one key.');
+        }
+
+        $this->key = $this->buildKey($key);
+    }
+
+}
diff --git a/common/components/redis/Set.php b/common/components/redis/Set.php
new file mode 100644
index 0000000..9dde932
--- /dev/null
+++ b/common/components/redis/Set.php
@@ -0,0 +1,49 @@
+<?php
+namespace common\components\redis;
+
+use IteratorAggregate;
+use Yii;
+
+class Set extends Key implements IteratorAggregate {
+
+    /**
+     * @return \yii\redis\Connection
+     */
+    public static function getDb() {
+        return Yii::$app->get('redis');
+    }
+
+    public function add($value) {
+        $this->getDb()->executeCommand('SADD', [$this->key, $value]);
+        return $this;
+    }
+
+    public function remove($value) {
+        $this->getDb()->executeCommand('SREM', [$this->key, $value]);
+        return $this;
+    }
+
+    public function members() {
+        return $this->getDb()->executeCommand('SMEMBERS', [$this->key]);
+    }
+
+    public function getValue() {
+        return $this->members();
+    }
+
+    public function exists($value) {
+        return !!$this->getDb()->executeCommand('SISMEMBER', [$this->key, $value]);
+    }
+
+    public function diff(array $sets) {
+        return $this->getDb()->executeCommand('SDIFF', [$this->key, implode(' ', $sets)]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getIterator() {
+        return new \ArrayIterator($this->members());
+    }
+
+}
diff --git a/common/config/main.php b/common/config/main.php
index c920d13..e568d4a 100644
--- a/common/config/main.php
+++ b/common/config/main.php
@@ -15,6 +15,9 @@ return [
         ],
         'security' => [
             'passwordHashStrategy' => 'password_hash',
-        ]
+        ],
+        'redis' => [
+            'class' => 'yii\redis\Connection',
+        ],
     ],
 ];
diff --git a/common/models/Account.php b/common/models/Account.php
index d6d2725..f3b0bc4 100644
--- a/common/models/Account.php
+++ b/common/models/Account.php
@@ -28,6 +28,7 @@ use yii\web\IdentityInterface;
  *
  * Отношения:
  * @property EmailActivation[] $emailActivations
+ * @property OauthSession[]    $sessions
  *
  * Поведения:
  * @mixin TimestampBehavior
@@ -216,4 +217,34 @@ class Account extends ActiveRecord implements IdentityInterface {
         return $this->hasMany(EmailActivation::class, ['id' => 'account_id']);
     }
 
+    public function getSessions() {
+        return $this->hasMany(OauthSession::class, ['owner_id' => 'id']);
+    }
+
+    /**
+     * Метод проверяет, может ли текщий пользователь быть автоматически авторизован
+     * для указанного клиента без запроса доступа к необходимому списку прав
+     *
+     * @param OauthClient $client
+     * @param \League\OAuth2\Server\Entity\ScopeEntity[] $scopes
+     *
+     * @return bool
+     */
+    public function canAutoApprove(OauthClient $client, array $scopes = []) {
+        if ($client->is_trusted) {
+            return true;
+        }
+
+        /** @var OauthSession|null $session */
+        $session = $this->getSessions()->andWhere(['client_id' => $client->id])->one();
+        if ($session !== null) {
+            $existScopes = $session->getScopes()->members();
+            if (empty(array_diff(array_keys($scopes), $existScopes))) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
 }
diff --git a/common/models/OauthAccessToken.php b/common/models/OauthAccessToken.php
new file mode 100644
index 0000000..7053cb8
--- /dev/null
+++ b/common/models/OauthAccessToken.php
@@ -0,0 +1,41 @@
+<?php
+namespace common\models;
+
+use common\components\redis\Set;
+use Yii;
+use yii\db\ActiveRecord;
+
+/**
+ * This is the model class for table "oauth_access_tokens".
+ *
+ * @property string  $access_token
+ * @property string  $session_id
+ * @property integer $expire_time
+ *
+ * @property Set     $scopes
+ */
+class OauthAccessToken extends ActiveRecord {
+
+    public static function tableName() {
+        return '{{%oauth_access_tokens}}';
+    }
+
+    public function getSession() {
+        return $this->hasOne(OauthSession::class, ['id' => 'session_id']);
+    }
+
+    public function getScopes() {
+        return new Set($this->getDb()->getSchema()->getRawTableName($this->tableName()), $this->access_token, 'scopes');
+    }
+
+    public function beforeDelete() {
+        if (!$result = parent::beforeDelete()) {
+            return $result;
+        }
+
+        $this->getScopes()->delete();
+
+        return true;
+    }
+
+}
diff --git a/common/models/OauthClient.php b/common/models/OauthClient.php
new file mode 100644
index 0000000..8bec648
--- /dev/null
+++ b/common/models/OauthClient.php
@@ -0,0 +1,49 @@
+<?php
+namespace common\models;
+
+use Yii;
+use yii\db\ActiveRecord;
+
+/**
+ * Поля модели:
+ * @property string         $id
+ * @property string         $secret
+ * @property string         $name
+ * @property string         $description
+ * @property string         $redirect_uri
+ * @property integer        $account_id
+ * @property bool           $is_trusted
+ * @property integer        $created_at
+ *
+ * Отношения:
+ * @property Account        $account
+ * @property OauthSession[] $sessions
+ */
+class OauthClient extends ActiveRecord {
+
+    public static function tableName() {
+        return '{{%oauth_clients}}';
+    }
+
+    public function rules() {
+        return [
+            [['id'], 'required', 'when' => function(self $model) {
+                return $model->isNewRecord;
+            }],
+            [['id'], 'unique', 'when' => function(self $model) {
+                return $model->isNewRecord;
+            }],
+            [['name', 'description'], 'required'],
+            [['name', 'description'], 'string', 'max' => 255],
+        ];
+    }
+
+    public function getAccount() {
+        return $this->hasOne(Account::class, ['id' => 'account_id']);
+    }
+
+    public function getSessions() {
+        return $this->hasMany(OauthSession::class, ['client_id' => 'id']);
+    }
+
+}
diff --git a/common/models/OauthScope.php b/common/models/OauthScope.php
new file mode 100644
index 0000000..cfa3acc
--- /dev/null
+++ b/common/models/OauthScope.php
@@ -0,0 +1,17 @@
+<?php
+namespace common\models;
+
+use Yii;
+use yii\db\ActiveRecord;
+
+/**
+ * Поля:
+ * @property string $id
+ */
+class OauthScope extends ActiveRecord {
+
+    public static function tableName() {
+        return '{{%oauth_scopes}}';
+    }
+
+}
diff --git a/common/models/OauthSession.php b/common/models/OauthSession.php
new file mode 100644
index 0000000..e438287
--- /dev/null
+++ b/common/models/OauthSession.php
@@ -0,0 +1,54 @@
+<?php
+namespace common\models;
+
+use common\components\redis\Set;
+use Yii;
+use yii\db\ActiveRecord;
+
+/**
+ * Поля:
+ * @property integer            $id
+ * @property string             $owner_type
+ * @property string             $owner_id
+ * @property string             $client_id
+ * @property string             $client_redirect_uri
+ *
+ * Отношения
+ * @property OauthAccessToken[] $accessTokens
+ * @property OauthClient        $client
+ * @property Account            $account
+ * @property Set                $scopes
+ */
+class OauthSession extends ActiveRecord {
+
+    public static function tableName() {
+        return '{{%oauth_sessions}}';
+    }
+
+    public function getOauthAccessTokens() {
+        return $this->hasMany(OauthAccessToken::class, ['session_id' => 'id']);
+    }
+
+    public function getClient() {
+        return $this->hasOne(OauthClient::class, ['id' => 'client_id']);
+    }
+
+    public function getAccount() {
+        return $this->hasOne(Account::class, ['id' => 'owner_id']);
+    }
+
+    public function getScopes() {
+        return new Set($this->getDb()->getSchema()->getRawTableName($this->tableName()), $this->id, 'scopes');
+    }
+
+    public function beforeDelete() {
+        if (!$result = parent::beforeDelete()) {
+            return $result;
+        }
+
+        $this->getScopes()->delete();
+
+        return true;
+    }
+
+}
diff --git a/composer.json b/composer.json
index 7fd250b..e0d8971 100644
--- a/composer.json
+++ b/composer.json
@@ -18,14 +18,19 @@
         "yiisoft/yii2": ">=2.0.6",
         "yiisoft/yii2-bootstrap": "*",
         "yiisoft/yii2-swiftmailer": "*",
-        "ramsey/uuid": "^3.1"
+        "ramsey/uuid": "^3.1",
+        "league/oauth2-server": "~4.1.5",
+        "yiisoft/yii2-redis": "~2.0.0"
     },
     "require-dev": {
         "yiisoft/yii2-codeception": "*",
         "yiisoft/yii2-debug": "*",
         "yiisoft/yii2-gii": "*",
         "yiisoft/yii2-faker": "*",
-        "flow/jsonpath": "^0.3.1"
+        "flow/jsonpath": "^0.3.1",
+        "codeception/codeception": "2.0.*",
+        "codeception/specify": "*",
+        "codeception/verify": "*"
     },
     "config": {
         "process-timeout": 1800
diff --git a/console/db/Migration.php b/console/db/Migration.php
index c2effcb..d784a36 100644
--- a/console/db/Migration.php
+++ b/console/db/Migration.php
@@ -11,11 +11,34 @@ class Migration extends YiiMigration {
     public function getTableOptions($engine = 'InnoDB') {
         $tableOptions = null;
         if ($this->db->driverName === 'mysql') {
-            // http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
             $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_general_ci ENGINE=' . $engine;
         }
 
         return $tableOptions;
     }
 
+    protected function primary(...$columns) {
+        switch (count($columns)) {
+            case 0:
+                $key = '';
+                break;
+            case 1:
+                $key = $columns[0];
+                break;
+            default:
+                $key = $this->buildKey($columns);
+        }
+
+        return " PRIMARY KEY ($key) ";
+    }
+
+    private function buildKey(array $columns) {
+        $key = '';
+        foreach ($columns as $i => $column) {
+            $key .= $i == count($columns) ? $column : "$column,";
+        }
+
+        return $key;
+    }
+
 }
diff --git a/console/migrations/m160201_055928_oauth.php b/console/migrations/m160201_055928_oauth.php
new file mode 100644
index 0000000..bfc71c7
--- /dev/null
+++ b/console/migrations/m160201_055928_oauth.php
@@ -0,0 +1,77 @@
+<?php
+
+use console\db\Migration;
+
+class m160201_055928_oauth extends Migration {
+
+    public function safeUp() {
+        $this->createTable('{{%oauth_clients}}', [
+            'id'           => $this->string(64),
+            'secret'       => $this->string()->notNull(),
+            'name'         => $this->string()->notNull(),
+            'description'  => $this->string(),
+            'redirect_uri' => $this->string()->notNull(),
+            'account_id'   => $this->getDb()->getTableSchema('{{%accounts}}')->getColumn('id')->dbType,
+            'is_trusted'   => $this->boolean()->defaultValue(false)->notNull(),
+            'created_at'   => $this->integer()->notNull(),
+            $this->primary('id'),
+        ], $this->tableOptions);
+
+        $this->createTable('{{%oauth_scopes}}', [
+            'id' => $this->string(64),
+            $this->primary('id'),
+        ], $this->tableOptions);
+
+        $this->createTable('{{%oauth_sessions}}', [
+            'id'                  => $this->primaryKey(),
+            'owner_type'          => $this->string()->notNull(),
+            'owner_id'            => $this->string()->notNull(),
+            'client_id'           => $this->getDb()->getTableSchema('{{%oauth_clients}}')->getColumn('id')->dbType,
+            'client_redirect_uri' => $this->string(),
+        ], $this->tableOptions);
+
+        $this->createTable('{{%oauth_access_tokens}}', [
+            'access_token' => $this->string(64),
+            'session_id'   => $this->getDb()->getTableSchema('{{%oauth_sessions}}')->getColumn('id')->dbType,
+            'expire_time'  => $this->integer()->notNull(),
+            $this->primary('access_token'),
+        ], $this->tableOptions);
+
+        $this->addForeignKey(
+            'FK_oauth_client_to_accounts',
+            '{{%oauth_clients}}',
+            'account_id',
+            '{{%accounts}}',
+            'id',
+            'CASCADE'
+        );
+
+        $this->addForeignKey(
+            'FK_oauth_session_to_client',
+            '{{%oauth_sessions}}',
+            'client_id',
+            '{{%oauth_clients}}',
+            'id',
+            'CASCADE',
+            'CASCADE'
+        );
+
+        $this->addForeignKey(
+            'FK_oauth_access_toke_to_oauth_session',
+            '{{%oauth_access_tokens}}',
+            'session_id',
+            '{{%oauth_sessions}}',
+            'id',
+            'CASCADE',
+            'SET NULL'
+        );
+    }
+
+    public function safeDown() {
+        $this->dropTable('{{%oauth_access_tokens}}');
+        $this->dropTable('{{%oauth_sessions}}');
+        $this->dropTable('{{%oauth_scopes}}');
+        $this->dropTable('{{%oauth_clients}}');
+    }
+
+}
diff --git a/environments/dev/api/config/main-local.php b/environments/dev/api/config/main-local.php
index d9e3809..4c7c9bc 100644
--- a/environments/dev/api/config/main-local.php
+++ b/environments/dev/api/config/main-local.php
@@ -6,6 +6,9 @@ $config = [
             // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
             'cookieValidationKey' => '',
         ],
+        'reCaptcha' => [
+            'secret' => '',
+        ],
     ],
 ];
 
diff --git a/environments/dev/common/config/main-local.php b/environments/dev/common/config/main-local.php
index 8f3311c..d5bc008 100644
--- a/environments/dev/common/config/main-local.php
+++ b/environments/dev/common/config/main-local.php
@@ -12,5 +12,11 @@ return [
             // for the mailer to send real emails.
             'useFileTransport' => true,
         ],
+        'redis' => [
+            'hostname' => 'localhost',
+            'password' => null,
+            'port' => 6379,
+            'database' => 0,
+        ],
     ],
 ];
diff --git a/environments/prod/api/config/main-local.php b/environments/prod/api/config/main-local.php
new file mode 100644
index 0000000..9bf259c
--- /dev/null
+++ b/environments/prod/api/config/main-local.php
@@ -0,0 +1,12 @@
+<?php
+return [
+    'components' => [
+        'request' => [
+            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
+            'cookieValidationKey' => '',
+        ],
+        'reCaptcha' => [
+            'secret' => '',
+        ],
+    ],
+];
diff --git a/environments/prod/api/config/params-local.php b/environments/prod/api/config/params-local.php
new file mode 100644
index 0000000..d0b9c34
--- /dev/null
+++ b/environments/prod/api/config/params-local.php
@@ -0,0 +1,3 @@
+<?php
+return [
+];
diff --git a/environments/prod/api/web/index.php b/environments/prod/api/web/index.php
new file mode 100644
index 0000000..674803a
--- /dev/null
+++ b/environments/prod/api/web/index.php
@@ -0,0 +1,18 @@
+<?php
+defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_ENV') or define('YII_ENV', 'prod');
+
+require(__DIR__ . '/../../vendor/autoload.php');
+require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');
+require(__DIR__ . '/../../common/config/bootstrap.php');
+require(__DIR__ . '/../config/bootstrap.php');
+
+$config = yii\helpers\ArrayHelper::merge(
+    require(__DIR__ . '/../../common/config/main.php'),
+    require(__DIR__ . '/../../common/config/main-local.php'),
+    require(__DIR__ . '/../config/main.php'),
+    require(__DIR__ . '/../config/main-local.php')
+);
+
+$application = new yii\web\Application($config);
+$application->run();
diff --git a/environments/prod/common/config/main-local.php b/environments/prod/common/config/main-local.php
index e4e6d99..6fb5f85 100644
--- a/environments/prod/common/config/main-local.php
+++ b/environments/prod/common/config/main-local.php
@@ -6,5 +6,11 @@ return [
             'username' => 'root',
             'password' => '',
         ],
+        'redis' => [
+            'hostname' => 'localhost',
+            'password' => null,
+            'port' => 6379,
+            'database' => 0,
+        ],
     ],
 ];
diff --git a/tests/codeception/api/_bootstrap.php b/tests/codeception/api/_bootstrap.php
index 7a8b56d..2344a50 100644
--- a/tests/codeception/api/_bootstrap.php
+++ b/tests/codeception/api/_bootstrap.php
@@ -21,3 +21,6 @@ $_SERVER['SERVER_NAME'] =  parse_url(\Codeception\Configuration::config()['confi
 $_SERVER['SERVER_PORT'] =  parse_url(\Codeception\Configuration::config()['config']['test_entry_url'], PHP_URL_PORT) ?: '80';
 
 Yii::setAlias('@tests', dirname(dirname(__DIR__)));
+
+// disable deep cloning of properties inside specify block
+\Codeception\Specify\Config::setDeepClone(false);
diff --git a/tests/codeception/api/_pages/OauthRoute.php b/tests/codeception/api/_pages/OauthRoute.php
new file mode 100644
index 0000000..4356928
--- /dev/null
+++ b/tests/codeception/api/_pages/OauthRoute.php
@@ -0,0 +1,21 @@
+<?php
+namespace tests\codeception\api\_pages;
+
+use yii\codeception\BasePage;
+
+/**
+ * @property \tests\codeception\api\FunctionalTester $actor
+ */
+class OauthRoute extends BasePage {
+
+    public function validate($queryParams) {
+        $this->route = ['oauth/validate'];
+        $this->actor->sendGET($this->getUrl($queryParams));
+    }
+
+    public function complete($queryParams = [], $postParams = []) {
+        $this->route = ['oauth/complete'];
+        $this->actor->sendPOST($this->getUrl($queryParams), $postParams);
+    }
+
+}
diff --git a/tests/codeception/api/functional.suite.yml b/tests/codeception/api/functional.suite.yml
index b2bbce8..37e2ef1 100644
--- a/tests/codeception/api/functional.suite.yml
+++ b/tests/codeception/api/functional.suite.yml
@@ -13,6 +13,11 @@ modules:
       - Yii2
       - tests\codeception\common\_support\FixtureHelper
       - REST
+      - Redis
     config:
         Yii2:
             configFile: '../config/api/functional.php'
+        Redis:
+            host: localhost
+            port: 6379
+            database: 1
diff --git a/tests/codeception/api/functional/ContactCept.php b/tests/codeception/api/functional/ContactCept.php
deleted file mode 100644
index 1558ea4..0000000
--- a/tests/codeception/api/functional/ContactCept.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-use tests\codeception\api\FunctionalTester;
-use tests\codeception\api\_pages\ContactPage;
-
-/* @var $scenario Codeception\Scenario */
-
-$I = new FunctionalTester($scenario);
-$I->wantTo('ensure that contact works');
-
-$contactPage = ContactPage::openBy($I);
-
-$I->see('Contact', 'h1');
-
-$I->amGoingTo('submit contact form with no data');
-$contactPage->submit([]);
-$I->expectTo('see validations errors');
-$I->see('Contact', 'h1');
-$I->see('Name cannot be blank', '.help-block');
-$I->see('Email cannot be blank', '.help-block');
-$I->see('Subject cannot be blank', '.help-block');
-$I->see('Body cannot be blank', '.help-block');
-$I->see('The verification code is incorrect', '.help-block');
-
-$I->amGoingTo('submit contact form with not correct email');
-$contactPage->submit([
-    'name' => 'tester',
-    'email' => 'tester.email',
-    'subject' => 'test subject',
-    'body' => 'test content',
-    'verifyCode' => 'testme',
-]);
-$I->expectTo('see that email adress is wrong');
-$I->dontSee('Name cannot be blank', '.help-block');
-$I->see('Email is not a valid email address.', '.help-block');
-$I->dontSee('Subject cannot be blank', '.help-block');
-$I->dontSee('Body cannot be blank', '.help-block');
-$I->dontSee('The verification code is incorrect', '.help-block');
-
-$I->amGoingTo('submit contact form with correct data');
-$contactPage->submit([
-    'name' => 'tester',
-    'email' => 'tester@example.com',
-    'subject' => 'test subject',
-    'body' => 'test content',
-    'verifyCode' => 'testme',
-]);
-$I->see('Thank you for contacting us. We will respond to you as soon as possible.');
diff --git a/tests/codeception/api/functional/OauthCest.php b/tests/codeception/api/functional/OauthCest.php
new file mode 100644
index 0000000..bd84ef1
--- /dev/null
+++ b/tests/codeception/api/functional/OauthCest.php
@@ -0,0 +1,294 @@
+<?php
+namespace tests\codeception\api;
+
+use tests\codeception\api\_pages\OauthRoute;
+use tests\codeception\api\functional\_steps\AccountSteps;
+
+class OauthCest {
+
+    /**
+     * @var OauthRoute
+     */
+    private $route;
+
+    public function _before(FunctionalTester $I) {
+        $this->route = new OauthRoute($I);
+    }
+
+    public function testValidateRequest(FunctionalTester $I) {
+        $this->testOauthParamsValidation($I, 'validate');
+
+        $I->wantTo('validate and obtain information about new auth request');
+        $this->route->validate($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            [
+                'minecraft_server_session'
+            ],
+            'test-state'
+        ));
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+            'oAuth' => [
+                'client_id' => 'ely',
+                'redirect_uri' => 'http://ely.by',
+                'response_type' => 'code',
+                'scope' => 'minecraft_server_session',
+                'state' => 'test-state',
+            ],
+            'client' => [
+                'id' => 'ely',
+                'name' => 'Ely.by',
+                'description' => 'Всем знакомое елуби',
+            ],
+            'session' => [
+                'scopes' => [
+                    'minecraft_server_session',
+                ],
+            ],
+        ]);
+    }
+
+    public function testValidateWithDescriptionReplaceRequest(FunctionalTester $I) {
+        $I->wantTo('validate and get information with description replacement');
+        $this->route->validate($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            null,
+            null,
+            [
+                'description' => 'all familiar eliby',
+            ]
+        ));
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'client' => [
+                'description' => 'all familiar eliby',
+            ],
+        ]);
+    }
+
+    public function testCompleteValidationAction($I, $scenario) {
+        $I = new AccountSteps($scenario);
+        $I->loggedInAsActiveAccount();
+        $I->wantTo('validate all oAuth params on complete request');
+        $this->testOauthParamsValidation($I, 'complete');
+    }
+
+    public function testCompleteActionOnWrongConditions($I, $scenario) {
+        $I = new AccountSteps($scenario);
+        $I->loggedInAsActiveAccount();
+
+        $I->wantTo('get accept_required if I dom\'t require any scope, but this is first time request');
+        $I->cleanupRedis();
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code'
+        ));
+        $I->canSeeResponseCodeIs(401);
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'accept_required',
+            'parameter' => '',
+            'statusCode' => 401,
+        ]);
+
+        $I->wantTo('get accept_required if I require some scopes on first time');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session']
+        ));
+        $I->canSeeResponseCodeIs(401);
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'accept_required',
+            'parameter' => '',
+            'statusCode' => 401,
+        ]);
+    }
+
+    public function testCompleteActionSuccess($I, $scenario) {
+        $I = new AccountSteps($scenario);
+        $I->loggedInAsActiveAccount();
+
+        $I->wantTo('get auth code if I require some scope and pass accept field');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session']
+        ), ['accept' => true]);
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+
+        $I->wantTo('get auth code if I don\'t require any scope and don\'t pass accept field, but previously have ' .
+                   'successful request');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code'
+        ));
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+
+        $I->wantTo('get auth code if I require some scopes and don\'t pass accept field, but previously have successful ' .
+                   'request with same scopes');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session']
+        ));
+        $I->canSeeResponseCodeIs(200);
+        $I->canSeeResponseContainsJson([
+            'success' => true,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+    }
+
+    public function testAcceptRequiredOnNewScope($I, $scenario) {
+        $I = new AccountSteps($scenario);
+        $I->loggedInAsActiveAccount();
+        $I->wantTo('get accept_required if I have previous successful request, but now require some new scope');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session']
+        ), ['accept' => true]);
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session', 'change_skin']
+        ));
+        $I->canSeeResponseCodeIs(401);
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'accept_required',
+            'parameter' => '',
+            'statusCode' => 401,
+        ]);
+    }
+
+    public function testCompleteActionWithDismissState($I, $scenario) {
+        $I = new AccountSteps($scenario);
+        $I->loggedInAsActiveAccount();
+        $I->wantTo('get access_denied error if I pass accept in false state');
+        $this->route->complete($this->buildQueryParams(
+            'ely',
+            'http://ely.by',
+            'code',
+            ['minecraft_server_session']
+        ), ['accept' => false]);
+        $I->canSeeResponseCodeIs(401);
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'access_denied',
+            'parameter' => '',
+            'statusCode' => 401,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+    }
+
+    private function buildQueryParams(
+        $clientId = null,
+        $redirectUri = null,
+        $responseType = null,
+        $scopes = [],
+        $state = null,
+        $customData = []
+    ) {
+        $params = $customData;
+        if ($clientId !== null) {
+            $params['client_id'] = $clientId;
+        }
+
+        if ($redirectUri !== null) {
+            $params['redirect_uri'] = $redirectUri;
+        }
+
+        if ($responseType !== null) {
+            $params['response_type'] = $responseType;
+        }
+
+        if ($state !== null) {
+            $params['state'] = $state;
+        }
+
+        if (!empty($scopes)) {
+            if (is_array($scopes)) {
+                $scopes = implode(',', $scopes);
+            }
+
+            $params['scope'] = $scopes;
+        }
+
+        return $params;
+    }
+
+    private function testOauthParamsValidation(FunctionalTester $I, $action) {
+        $I->wantTo('check behavior on invalid request without one or few params');
+        $this->route->$action($this->buildQueryParams());
+        $I->canSeeResponseCodeIs(400);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'invalid_request',
+            'parameter' => 'client_id',
+            'statusCode' => 400,
+        ]);
+
+        $I->wantTo('check behavior on invalid client id');
+        $this->route->$action($this->buildQueryParams('non-exists-client', 'http://some-resource.by', 'code'));
+        $I->canSeeResponseCodeIs(401);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'invalid_client',
+            'statusCode' => 401,
+        ]);
+
+        $I->wantTo('check behavior on invalid response type');
+        $this->route->$action($this->buildQueryParams('ely', 'http://ely.by', 'kitty'));
+        $I->canSeeResponseCodeIs(400);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'unsupported_response_type',
+            'parameter' => 'kitty',
+            'statusCode' => 400,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+
+        $I->wantTo('check behavior on some invalid scopes');
+        $this->route->$action($this->buildQueryParams('ely', 'http://ely.by', 'code', [
+            'minecraft_server_session',
+            'some_wrong_scope',
+        ]));
+        $I->canSeeResponseCodeIs(400);
+        $I->canSeeResponseIsJson();
+        $I->canSeeResponseContainsJson([
+            'success' => false,
+            'error' => 'invalid_scope',
+            'parameter' => 'some_wrong_scope',
+            'statusCode' => 400,
+        ]);
+        $I->canSeeResponseJsonMatchesJsonPath('$.redirectUri');
+    }
+
+}
diff --git a/tests/codeception/api/functional/_bootstrap.php b/tests/codeception/api/functional/_bootstrap.php
index b89a993..aed4dc6 100644
--- a/tests/codeception/api/functional/_bootstrap.php
+++ b/tests/codeception/api/functional/_bootstrap.php
@@ -1,3 +1,5 @@
 <?php
 
 new yii\web\Application(require(dirname(dirname(__DIR__)) . '/config/api/functional.php'));
+
+\Codeception\Util\Autoload::registerSuffix('Steps', __DIR__ . DIRECTORY_SEPARATOR);
diff --git a/tests/codeception/api/functional/_steps/AccountSteps.php b/tests/codeception/api/functional/_steps/AccountSteps.php
new file mode 100644
index 0000000..2b9f618
--- /dev/null
+++ b/tests/codeception/api/functional/_steps/AccountSteps.php
@@ -0,0 +1,16 @@
+<?php
+namespace tests\codeception\api\functional\_steps;
+
+use tests\codeception\api\_pages\LoginRoute;
+use tests\codeception\api\FunctionalTester;
+
+class AccountSteps extends FunctionalTester {
+
+    public function loggedInAsActiveAccount() {
+        $I = $this;
+        $route = new LoginRoute($I);
+        $route->login('Admin', 'password_0');
+        $I->canSeeResponseIsJson();
+    }
+
+}
diff --git a/tests/codeception/api/unit/models/ContactFormTest.php b/tests/codeception/api/unit/models/ContactFormTest.php
deleted file mode 100644
index 775a553..0000000
--- a/tests/codeception/api/unit/models/ContactFormTest.php
+++ /dev/null
@@ -1,59 +0,0 @@
-<?php
-
-namespace tests\codeception\api\unit\models;
-
-use Yii;
-use tests\codeception\api\unit\TestCase;
-use api\models\ContactForm;
-
-class ContactFormTest extends TestCase
-{
-
-    use \Codeception\Specify;
-
-    protected function setUp()
-    {
-        parent::setUp();
-        Yii::$app->mailer->fileTransportCallback = function ($mailer, $message) {
-            return 'testing_message.eml';
-        };
-    }
-
-    protected function tearDown()
-    {
-        unlink($this->getMessageFile());
-        parent::tearDown();
-    }
-
-    public function testContact()
-    {
-        $model = new ContactForm();
-
-        $model->attributes = [
-            'name' => 'Tester',
-            'email' => 'tester@example.com',
-            'subject' => 'very important letter subject',
-            'body' => 'body of current message',
-        ];
-
-        $model->sendEmail('admin@example.com');
-
-        $this->specify('email should be send', function () {
-            expect('email file should exist', file_exists($this->getMessageFile()))->true();
-        });
-
-        $this->specify('message should contain correct data', function () use ($model) {
-            $emailMessage = file_get_contents($this->getMessageFile());
-
-            expect('email should contain user name', $emailMessage)->contains($model->name);
-            expect('email should contain sender email', $emailMessage)->contains($model->email);
-            expect('email should contain subject', $emailMessage)->contains($model->subject);
-            expect('email should contain body', $emailMessage)->contains($model->body);
-        });
-    }
-
-    private function getMessageFile()
-    {
-        return Yii::getAlias(Yii::$app->mailer->fileTransportPath) . '/testing_message.eml';
-    }
-}
diff --git a/tests/codeception/api/unit/models/PasswordResetRequestFormTest.php b/tests/codeception/api/unit/models/PasswordResetRequestFormTest.php
deleted file mode 100644
index dabdd9c..0000000
--- a/tests/codeception/api/unit/models/PasswordResetRequestFormTest.php
+++ /dev/null
@@ -1,87 +0,0 @@
-<?php
-
-namespace tests\codeception\api\models;
-
-use Yii;
-use tests\codeception\api\unit\DbTestCase;
-use api\models\PasswordResetRequestForm;
-use tests\codeception\common\fixtures\UserFixture;
-use common\models\Account;
-use Codeception\Specify;
-
-class PasswordResetRequestFormTest extends DbTestCase
-{
-    use Specify;
-
-    protected function setUp()
-    {
-        parent::setUp();
-
-        Yii::$app->mailer->fileTransportCallback = function ($mailer, $message) {
-            return 'testing_message.eml';
-        };
-    }
-
-    protected function tearDown()
-    {
-        @unlink($this->getMessageFile());
-
-        parent::tearDown();
-    }
-
-    public function testSendEmailWrongUser()
-    {
-        $this->specify('no user with such email, message should not be sent', function () {
-
-            $model = new PasswordResetRequestForm();
-            $model->email = 'not-existing-email@example.com';
-
-            expect('email not sent', $model->sendEmail())->false();
-
-        });
-
-        $this->specify('user is not active, message should not be sent', function () {
-
-            $model = new PasswordResetRequestForm();
-            $model->email = $this->user[1]['email'];
-
-            expect('email not sent', $model->sendEmail())->false();
-
-        });
-    }
-
-    public function testSendEmailCorrectUser()
-    {
-        $model = new PasswordResetRequestForm();
-        $model->email = $this->user[0]['email'];
-        $user = Account::findOne(['password_reset_token' => $this->user[0]['password_reset_token']]);
-
-        expect('email sent', $model->sendEmail())->true();
-        expect('user has valid token', $user->password_reset_token)->notNull();
-
-        $this->specify('message has correct format', function () use ($model) {
-
-            expect('message file exists', file_exists($this->getMessageFile()))->true();
-
-            $message = file_get_contents($this->getMessageFile());
-            expect('message "from" is correct', $message)->contains(Yii::$app->params['supportEmail']);
-            expect('message "to" is correct', $message)->contains($model->email);
-
-        });
-    }
-
-    public function fixtures()
-    {
-        return [
-            'user' => [
-                'class' => UserFixture::className(),
-                'dataFile' => '@tests/codeception/api/unit/fixtures/data/models/user.php'
-            ],
-        ];
-    }
-
-    private function getMessageFile()
-    {
-        return Yii::getAlias(Yii::$app->mailer->fileTransportPath) . '/testing_message.eml';
-    }
-}
diff --git a/tests/codeception/api/unit/models/ResetPasswordFormTest.php b/tests/codeception/api/unit/models/ResetPasswordFormTest.php
deleted file mode 100644
index b3ab142..0000000
--- a/tests/codeception/api/unit/models/ResetPasswordFormTest.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-namespace tests\codeception\api\unit\models;
-
-use tests\codeception\api\unit\DbTestCase;
-use tests\codeception\common\fixtures\UserFixture;
-use api\models\ResetPasswordForm;
-
-class ResetPasswordFormTest extends DbTestCase
-{
-
-    /**
-     * @expectedException \yii\base\InvalidParamException
-     */
-    public function testResetWrongToken()
-    {
-        new ResetPasswordForm('notexistingtoken_1391882543');
-    }
-
-    /**
-     * @expectedException \yii\base\InvalidParamException
-     */
-    public function testResetEmptyToken()
-    {
-        new ResetPasswordForm('');
-    }
-
-    public function testResetCorrectToken()
-    {
-        $form = new ResetPasswordForm($this->user[0]['password_reset_token']);
-        expect('password should be resetted', $form->resetPassword())->true();
-    }
-
-    public function fixtures()
-    {
-        return [
-            'user' => [
-                'class' => UserFixture::className(),
-                'dataFile' => '@tests/codeception/api/unit/fixtures/data/models/user.php'
-            ],
-        ];
-    }
-}
diff --git a/tests/codeception/common/_support/FixtureHelper.php b/tests/codeception/common/_support/FixtureHelper.php
index 7b4bdda..c413a84 100644
--- a/tests/codeception/common/_support/FixtureHelper.php
+++ b/tests/codeception/common/_support/FixtureHelper.php
@@ -4,6 +4,9 @@ namespace tests\codeception\common\_support;
 use Codeception\Module;
 use tests\codeception\common\fixtures\AccountFixture;
 use tests\codeception\common\fixtures\EmailActivationFixture;
+use tests\codeception\common\fixtures\OauthClientFixture;
+use tests\codeception\common\fixtures\OauthScopeFixture;
+use tests\codeception\common\fixtures\OauthSessionFixture;
 use yii\test\FixtureTrait;
 use yii\test\InitDbFixture;
 
@@ -26,35 +29,20 @@ class FixtureHelper extends Module {
         getFixture as protected;
     }
 
-    /**
-     * Method called before any suite tests run. Loads User fixture login user
-     * to use in functional tests.
-     *
-     * @param array $settings
-     */
     public function _beforeSuite($settings = []) {
         $this->loadFixtures();
     }
 
-    /**
-     * Method is called after all suite tests run
-     */
     public function _afterSuite() {
         $this->unloadFixtures();
     }
 
-    /**
-     * @inheritdoc
-     */
     public function globalFixtures() {
         return [
             InitDbFixture::className(),
         ];
     }
 
-    /**
-     * @inheritdoc
-     */
     public function fixtures() {
         return [
             'accounts' => [
@@ -65,6 +53,19 @@ class FixtureHelper extends Module {
                 'class' => EmailActivationFixture::class,
                 'dataFile' => '@tests/codeception/common/fixtures/data/email-activations.php',
             ],
+            'oauthClients' => [
+                'class' => OauthClientFixture::class,
+                'dataFile' => '@tests/codeception/common/fixtures/data/oauth-clients.php',
+            ],
+            'oauthScopes' => [
+                'class' => OauthScopeFixture::class,
+                'dataFile' => '@tests/codeception/common/fixtures/data/oauth-scopes.php',
+            ],
+            'oauthSessions' => [
+                'class' => OauthSessionFixture::class,
+                'dataFile' => '@tests/codeception/common/fixtures/data/oauth-sessions.php',
+            ],
         ];
     }
+
 }
diff --git a/tests/codeception/common/fixtures/OauthClientFixture.php b/tests/codeception/common/fixtures/OauthClientFixture.php
new file mode 100644
index 0000000..e6dee18
--- /dev/null
+++ b/tests/codeception/common/fixtures/OauthClientFixture.php
@@ -0,0 +1,15 @@
+<?php
+namespace tests\codeception\common\fixtures;
+
+use common\models\OauthClient;
+use yii\test\ActiveFixture;
+
+class OauthClientFixture extends ActiveFixture {
+
+    public $modelClass = OauthClient::class;
+
+    public $depends = [
+        AccountFixture::class,
+    ];
+
+}
diff --git a/tests/codeception/common/fixtures/OauthScopeFixture.php b/tests/codeception/common/fixtures/OauthScopeFixture.php
new file mode 100644
index 0000000..2ce4ef2
--- /dev/null
+++ b/tests/codeception/common/fixtures/OauthScopeFixture.php
@@ -0,0 +1,11 @@
+<?php
+namespace tests\codeception\common\fixtures;
+
+use common\models\OauthScope;
+use yii\test\ActiveFixture;
+
+class OauthScopeFixture extends ActiveFixture {
+
+    public $modelClass = OauthScope::class;
+
+}
diff --git a/tests/codeception/common/fixtures/OauthSessionFixture.php b/tests/codeception/common/fixtures/OauthSessionFixture.php
new file mode 100644
index 0000000..77adb2a
--- /dev/null
+++ b/tests/codeception/common/fixtures/OauthSessionFixture.php
@@ -0,0 +1,17 @@
+<?php
+namespace tests\codeception\common\fixtures;
+
+use common\models\OauthScope;
+use common\models\OauthSession;
+use yii\test\ActiveFixture;
+
+class OauthSessionFixture extends ActiveFixture {
+
+    public $modelClass = OauthSession::class;
+
+    public $depends = [
+        OauthClientFixture::class,
+        AccountFixture::class,
+    ];
+
+}
diff --git a/tests/codeception/common/fixtures/data/oauth-clients.php b/tests/codeception/common/fixtures/data/oauth-clients.php
new file mode 100644
index 0000000..c7b11a9
--- /dev/null
+++ b/tests/codeception/common/fixtures/data/oauth-clients.php
@@ -0,0 +1,23 @@
+<?php
+return [
+    'ely' => [
+        'id' => 'ely',
+        'secret' => 'ZuM1vGchJz-9_UZ5HC3H3Z9Hg5PzdbkM',
+        'name' => 'Ely.by',
+        'description' => 'Всем знакомое елуби',
+        'redirect_uri' => 'http://ely.by',
+        'account_id' => NULL,
+        'is_trusted' => 0,
+        'created_at' => 1455309271,
+    ],
+    'tlauncher' => [
+        'id' => 'tlauncher',
+        'secret' => 'HsX-xXzdGiz3mcsqeEvrKHF47sqiaX94',
+        'name' => 'TLauncher',
+        'description' => 'Лучший альтернативный лаунчер для Minecraft с большим количеством версий и их модификаций, а также возмоностью входа как с лицензионным аккаунтом, так и без него.',
+        'redirect_uri' => '',
+        'account_id' => NULL,
+        'is_trusted' => 0,
+        'created_at' => 1455318468,
+    ],
+];
diff --git a/tests/codeception/common/fixtures/data/oauth-scopes.php b/tests/codeception/common/fixtures/data/oauth-scopes.php
new file mode 100644
index 0000000..dc2ef34
--- /dev/null
+++ b/tests/codeception/common/fixtures/data/oauth-scopes.php
@@ -0,0 +1,9 @@
+<?php
+return [
+    'minecraft_server_session' => [
+        'id' => 'minecraft_server_session',
+    ],
+    'change_skin' => [
+        'id' => 'change_skin',
+    ],
+];
diff --git a/tests/codeception/common/fixtures/data/oauth-sessions.php b/tests/codeception/common/fixtures/data/oauth-sessions.php
new file mode 100644
index 0000000..d0b9c34
--- /dev/null
+++ b/tests/codeception/common/fixtures/data/oauth-sessions.php
@@ -0,0 +1,3 @@
+<?php
+return [
+];
diff --git a/tests/codeception/config/config.php b/tests/codeception/config/config.php
index 1fc90a8..54a4608 100644
--- a/tests/codeception/config/config.php
+++ b/tests/codeception/config/config.php
@@ -22,5 +22,8 @@ return [
         'urlManager' => [
             'showScriptName' => true,
         ],
+        'redis' => [
+            'database' => 1,
+        ],
     ],
 ];