Fixed logging in users that no longer exist

src/Dao/TokenDao.php

@@ -18,4 +18,9 @@ class TokenDao extends AbstractDao
 	{
 		$this->collection->remove(['name' => $tokenName]);
 	}
+
+	public function deleteByAdditionalData($additionalData)
+	{
+		$this->collection->remove(['additionalData' => $additionalData]);
+	}
 }

src/Services/AuthService.php

@@ -74,6 +74,8 @@ class AuthService
 
 		$this->loginToken = $loginToken;
 		$this->loggedInUser = $this->userDao->getById($loginToken->additionalData);
+		if (!$this->loggedInUser)
+			throw new \Exception('User was deleted.');
 		$this->updateLoginTime($this->loggedInUser);
 
 		if (!$this->loggedInUser)
@@ -133,6 +135,7 @@ class AuthService
 		$loginToken->name = hash('sha256', $user->name . '/' . microtime(true));
 		$loginToken->additionalData = $user->id;
 		$loginToken->purpose = \Szurubooru\Entities\Token::PURPOSE_LOGIN;
+		$this->tokenDao->deleteByAdditionalData($loginToken->additionalData);
 		$this->tokenDao->save($loginToken);
 		return $loginToken;
 	}

tests/Services/AuthServiceTest.php

@@ -51,6 +51,7 @@ class AuthServiceTest extends \Szurubooru\Tests\AbstractTestCase
 		$testUser->name = 'dummy';
 		$testUser->passwordHash = 'hash';
 		$this->userDaoMock->expects($this->once())->method('getByName')->willReturn($testUser);
+		$this->tokenDaoMock->expects($this->once())->method('deleteByAdditionalData')->with($testUser->id);
 
 		$authService = $this->getAuthService();
 		$authService->loginFromCredentials('dummy', 'godzilla');