nextcloud / server

lib/private/Accounts/AccountManager.php

Indentation +414 added lines, -414 removed lines

@@ -58,418 +58,418 @@
  */
 class AccountManager implements IAccountManager {
 
-	/** @var  IDBConnection database connection */
-	private $connection;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var string table name */
-	private $table = 'accounts';
-
-	/** @var string table name */
-	private $dataTable = 'accounts_data';
-
-	/** @var EventDispatcherInterface */
-	private $eventDispatcher;
-
-	/** @var IJobList */
-	private $jobList;
-
-	/** @var LoggerInterface */
-	private $logger;
-
-	public function __construct(IDBConnection $connection,
-								IConfig $config,
-								EventDispatcherInterface $eventDispatcher,
-								IJobList $jobList,
-								LoggerInterface $logger) {
-		$this->connection = $connection;
-		$this->config = $config;
-		$this->eventDispatcher = $eventDispatcher;
-		$this->jobList = $jobList;
-		$this->logger = $logger;
-	}
-
-	/**
-	 * @param string $input
-	 * @return string Provided phone number in E.164 format when it was a valid number
-	 * @throws \InvalidArgumentException When the phone number was invalid or no default region is set and the number doesn't start with a country code
-	 */
-	protected function parsePhoneNumber(string $input): string {
-		$defaultRegion = $this->config->getSystemValueString('default_phone_region', '');
-
-		if ($defaultRegion === '') {
-			// When no default region is set, only +49… numbers are valid
-			if (strpos($input, '+') !== 0) {
-				throw new \InvalidArgumentException(self::PROPERTY_PHONE);
-			}
-
-			$defaultRegion = 'EN';
-		}
-
-		$phoneUtil = PhoneNumberUtil::getInstance();
-		try {
-			$phoneNumber = $phoneUtil->parse($input, $defaultRegion);
-			if ($phoneNumber instanceof PhoneNumber && $phoneUtil->isValidNumber($phoneNumber)) {
-				return $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
-			}
-		} catch (NumberParseException $e) {
-		}
-
-		throw new \InvalidArgumentException(self::PROPERTY_PHONE);
-	}
-
-	/**
-	 * update user record
-	 *
-	 * @param IUser $user
-	 * @param array $data
-	 * @param bool $throwOnData Set to true if you can inform the user about invalid data
-	 * @return array The potentially modified data (e.g. phone numbers are converted to E.164 format)
-	 * @throws \InvalidArgumentException Message is the property that was invalid
-	 */
-	public function updateUser(IUser $user, array $data, bool $throwOnData = false): array {
-		$userData = $this->getUser($user);
-		$updated = true;
-
-		if (isset($data[self::PROPERTY_PHONE]) && $data[self::PROPERTY_PHONE]['value'] !== '') {
-			try {
-				$data[self::PROPERTY_PHONE]['value'] = $this->parsePhoneNumber($data[self::PROPERTY_PHONE]['value']);
-			} catch (\InvalidArgumentException $e) {
-				if ($throwOnData) {
-					throw $e;
-				}
-				$data[self::PROPERTY_PHONE]['value'] = '';
-			}
-		}
-
-		if (empty($userData)) {
-			$this->insertNewUser($user, $data);
-		} elseif ($userData !== $data) {
-			$data = $this->checkEmailVerification($userData, $data, $user);
-			$data = $this->updateVerifyStatus($userData, $data);
-			$this->updateExistingUser($user, $data);
-		} else {
-			// nothing needs to be done if new and old data set are the same
-			$updated = false;
-		}
-
-		if ($updated) {
-			$this->eventDispatcher->dispatch(
-				'OC\AccountManager::userUpdated',
-				new GenericEvent($user, $data)
-			);
-		}
-
-		return $data;
-	}
-
-	/**
-	 * delete user from accounts table
-	 *
-	 * @param IUser $user
-	 */
-	public function deleteUser(IUser $user) {
-		$uid = $user->getUID();
-		$query = $this->connection->getQueryBuilder();
-		$query->delete($this->table)
-			->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
-			->execute();
-
-		$this->deleteUserData($user);
-	}
-
-	/**
-	 * delete user from accounts table
-	 *
-	 * @param IUser $user
-	 */
-	public function deleteUserData(IUser $user): void {
-		$uid = $user->getUID();
-		$query = $this->connection->getQueryBuilder();
-		$query->delete($this->dataTable)
-			->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
-			->execute();
-	}
-
-	/**
-	 * get stored data from a given user
-	 *
-	 * @param IUser $user
-	 * @return array
-	 */
-	public function getUser(IUser $user) {
-		$uid = $user->getUID();
-		$query = $this->connection->getQueryBuilder();
-		$query->select('data')
-			->from($this->table)
-			->where($query->expr()->eq('uid', $query->createParameter('uid')))
-			->setParameter('uid', $uid);
-		$result = $query->execute();
-		$accountData = $result->fetchAll();
-		$result->closeCursor();
-
-		if (empty($accountData)) {
-			$userData = $this->buildDefaultUserRecord($user);
-			$this->insertNewUser($user, $userData);
-			return $userData;
-		}
-
-		$userDataArray = json_decode($accountData[0]['data'], true);
-		$jsonError = json_last_error();
-		if ($userDataArray === null || $userDataArray === [] || $jsonError !== JSON_ERROR_NONE) {
-			$this->logger->critical("User data of $uid contained invalid JSON (error $jsonError), hence falling back to a default user record");
-			return $this->buildDefaultUserRecord($user);
-		}
-
-		$userDataArray = $this->addMissingDefaultValues($userDataArray);
-
-		return $userDataArray;
-	}
-
-	public function searchUsers(string $property, array $values): array {
-		$chunks = array_chunk($values, 500);
-		$query = $this->connection->getQueryBuilder();
-		$query->select('*')
-			->from($this->dataTable)
-			->where($query->expr()->eq('name', $query->createNamedParameter($property)))
-			->andWhere($query->expr()->in('value', $query->createParameter('values')));
-
-		$matches = [];
-		foreach ($chunks as $chunk) {
-			$query->setParameter('values', $chunk, IQueryBuilder::PARAM_STR_ARRAY);
-			$result = $query->execute();
-
-			while ($row = $result->fetch()) {
-				$matches[$row['value']] = $row['uid'];
-			}
-			$result->closeCursor();
-		}
-
-		return $matches;
-	}
-
-	/**
-	 * check if we need to ask the server for email verification, if yes we create a cronjob
-	 *
-	 * @param $oldData
-	 * @param $newData
-	 * @param IUser $user
-	 * @return array
-	 */
-	protected function checkEmailVerification($oldData, $newData, IUser $user) {
-		if ($oldData[self::PROPERTY_EMAIL]['value'] !== $newData[self::PROPERTY_EMAIL]['value']) {
-			$this->jobList->add(VerifyUserData::class,
-				[
-					'verificationCode' => '',
-					'data' => $newData[self::PROPERTY_EMAIL]['value'],
-					'type' => self::PROPERTY_EMAIL,
-					'uid' => $user->getUID(),
-					'try' => 0,
-					'lastRun' => time()
-				]
-			);
-			$newData[self::PROPERTY_EMAIL]['verified'] = self::VERIFICATION_IN_PROGRESS;
-		}
-
-		return $newData;
-	}
-
-	/**
-	 * make sure that all expected data are set
-	 *
-	 * @param array $userData
-	 * @return array
-	 */
-	protected function addMissingDefaultValues(array $userData) {
-		foreach ($userData as $key => $value) {
-			if (!isset($userData[$key]['verified'])) {
-				$userData[$key]['verified'] = self::NOT_VERIFIED;
-			}
-		}
-
-		return $userData;
-	}
-
-	/**
-	 * reset verification status if personal data changed
-	 *
-	 * @param array $oldData
-	 * @param array $newData
-	 * @return array
-	 */
-	protected function updateVerifyStatus($oldData, $newData) {
-
-		// which account was already verified successfully?
-		$twitterVerified = isset($oldData[self::PROPERTY_TWITTER]['verified']) && $oldData[self::PROPERTY_TWITTER]['verified'] === self::VERIFIED;
-		$websiteVerified = isset($oldData[self::PROPERTY_WEBSITE]['verified']) && $oldData[self::PROPERTY_WEBSITE]['verified'] === self::VERIFIED;
-		$emailVerified = isset($oldData[self::PROPERTY_EMAIL]['verified']) && $oldData[self::PROPERTY_EMAIL]['verified'] === self::VERIFIED;
-
-		// keep old verification status if we don't have a new one
-		if (!isset($newData[self::PROPERTY_TWITTER]['verified'])) {
-			// keep old verification status if value didn't changed and an old value exists
-			$keepOldStatus = $newData[self::PROPERTY_TWITTER]['value'] === $oldData[self::PROPERTY_TWITTER]['value'] && isset($oldData[self::PROPERTY_TWITTER]['verified']);
-			$newData[self::PROPERTY_TWITTER]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_TWITTER]['verified'] : self::NOT_VERIFIED;
-		}
-
-		if (!isset($newData[self::PROPERTY_WEBSITE]['verified'])) {
-			// keep old verification status if value didn't changed and an old value exists
-			$keepOldStatus = $newData[self::PROPERTY_WEBSITE]['value'] === $oldData[self::PROPERTY_WEBSITE]['value'] && isset($oldData[self::PROPERTY_WEBSITE]['verified']);
-			$newData[self::PROPERTY_WEBSITE]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_WEBSITE]['verified'] : self::NOT_VERIFIED;
-		}
-
-		if (!isset($newData[self::PROPERTY_EMAIL]['verified'])) {
-			// keep old verification status if value didn't changed and an old value exists
-			$keepOldStatus = $newData[self::PROPERTY_EMAIL]['value'] === $oldData[self::PROPERTY_EMAIL]['value'] && isset($oldData[self::PROPERTY_EMAIL]['verified']);
-			$newData[self::PROPERTY_EMAIL]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_EMAIL]['verified'] : self::VERIFICATION_IN_PROGRESS;
-		}
-
-		// reset verification status if a value from a previously verified data was changed
-		if ($twitterVerified &&
-			$oldData[self::PROPERTY_TWITTER]['value'] !== $newData[self::PROPERTY_TWITTER]['value']
-		) {
-			$newData[self::PROPERTY_TWITTER]['verified'] = self::NOT_VERIFIED;
-		}
-
-		if ($websiteVerified &&
-			$oldData[self::PROPERTY_WEBSITE]['value'] !== $newData[self::PROPERTY_WEBSITE]['value']
-		) {
-			$newData[self::PROPERTY_WEBSITE]['verified'] = self::NOT_VERIFIED;
-		}
-
-		if ($emailVerified &&
-			$oldData[self::PROPERTY_EMAIL]['value'] !== $newData[self::PROPERTY_EMAIL]['value']
-		) {
-			$newData[self::PROPERTY_EMAIL]['verified'] = self::NOT_VERIFIED;
-		}
-
-		return $newData;
-	}
-
-	/**
-	 * add new user to accounts table
-	 *
-	 * @param IUser $user
-	 * @param array $data
-	 */
-	protected function insertNewUser(IUser $user, array $data): void {
-		$uid = $user->getUID();
-		$jsonEncodedData = json_encode($data);
-		$query = $this->connection->getQueryBuilder();
-		$query->insert($this->table)
-			->values(
-				[
-					'uid' => $query->createNamedParameter($uid),
-					'data' => $query->createNamedParameter($jsonEncodedData),
-				]
-			)
-			->execute();
-
-		$this->deleteUserData($user);
-		$this->writeUserData($user, $data);
-	}
-
-	/**
-	 * update existing user in accounts table
-	 *
-	 * @param IUser $user
-	 * @param array $data
-	 */
-	protected function updateExistingUser(IUser $user, array $data): void {
-		$uid = $user->getUID();
-		$jsonEncodedData = json_encode($data);
-		$query = $this->connection->getQueryBuilder();
-		$query->update($this->table)
-			->set('data', $query->createNamedParameter($jsonEncodedData))
-			->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
-			->execute();
-
-		$this->deleteUserData($user);
-		$this->writeUserData($user, $data);
-	}
-
-	protected function writeUserData(IUser $user, array $data): void {
-		$query = $this->connection->getQueryBuilder();
-		$query->insert($this->dataTable)
-			->values(
-				[
-					'uid' => $query->createNamedParameter($user->getUID()),
-					'name' => $query->createParameter('name'),
-					'value' => $query->createParameter('value'),
-				]
-			);
-		foreach ($data as $propertyName => $property) {
-			if ($propertyName === self::PROPERTY_AVATAR) {
-				continue;
-			}
-
-			$query->setParameter('name', $propertyName)
-				->setParameter('value', $property['value']);
-			$query->execute();
-		}
-	}
-
-	/**
-	 * build default user record in case not data set exists yet
-	 *
-	 * @param IUser $user
-	 * @return array
-	 */
-	protected function buildDefaultUserRecord(IUser $user) {
-		return [
-			self::PROPERTY_DISPLAYNAME =>
-				[
-					'value' => $user->getDisplayName(),
-					'scope' => self::VISIBILITY_CONTACTS_ONLY,
-					'verified' => self::NOT_VERIFIED,
-				],
-			self::PROPERTY_ADDRESS =>
-				[
-					'value' => '',
-					'scope' => self::VISIBILITY_PRIVATE,
-					'verified' => self::NOT_VERIFIED,
-				],
-			self::PROPERTY_WEBSITE =>
-				[
-					'value' => '',
-					'scope' => self::VISIBILITY_PRIVATE,
-					'verified' => self::NOT_VERIFIED,
-				],
-			self::PROPERTY_EMAIL =>
-				[
-					'value' => $user->getEMailAddress(),
-					'scope' => self::VISIBILITY_CONTACTS_ONLY,
-					'verified' => self::NOT_VERIFIED,
-				],
-			self::PROPERTY_AVATAR =>
-				[
-					'scope' => self::VISIBILITY_CONTACTS_ONLY
-				],
-			self::PROPERTY_PHONE =>
-				[
-					'value' => '',
-					'scope' => self::VISIBILITY_PRIVATE,
-					'verified' => self::NOT_VERIFIED,
-				],
-			self::PROPERTY_TWITTER =>
-				[
-					'value' => '',
-					'scope' => self::VISIBILITY_PRIVATE,
-					'verified' => self::NOT_VERIFIED,
-				],
-		];
-	}
-
-	private function parseAccountData(IUser $user, $data): Account {
-		$account = new Account($user);
-		foreach ($data as $property => $accountData) {
-			$account->setProperty($property, $accountData['value'] ?? '', $accountData['scope'] ?? self::VISIBILITY_PRIVATE, $accountData['verified'] ?? self::NOT_VERIFIED);
-		}
-		return $account;
-	}
-
-	public function getAccount(IUser $user): IAccount {
-		return $this->parseAccountData($user, $this->getUser($user));
-	}
+    /** @var  IDBConnection database connection */
+    private $connection;
+
+    /** @var IConfig */
+    private $config;
+
+    /** @var string table name */
+    private $table = 'accounts';
+
+    /** @var string table name */
+    private $dataTable = 'accounts_data';
+
+    /** @var EventDispatcherInterface */
+    private $eventDispatcher;
+
+    /** @var IJobList */
+    private $jobList;
+
+    /** @var LoggerInterface */
+    private $logger;
+
+    public function __construct(IDBConnection $connection,
+                                IConfig $config,
+                                EventDispatcherInterface $eventDispatcher,
+                                IJobList $jobList,
+                                LoggerInterface $logger) {
+        $this->connection = $connection;
+        $this->config = $config;
+        $this->eventDispatcher = $eventDispatcher;
+        $this->jobList = $jobList;
+        $this->logger = $logger;
+    }
+
+    /**
+     * @param string $input
+     * @return string Provided phone number in E.164 format when it was a valid number
+     * @throws \InvalidArgumentException When the phone number was invalid or no default region is set and the number doesn't start with a country code
+     */
+    protected function parsePhoneNumber(string $input): string {
+        $defaultRegion = $this->config->getSystemValueString('default_phone_region', '');
+
+        if ($defaultRegion === '') {
+            // When no default region is set, only +49… numbers are valid
+            if (strpos($input, '+') !== 0) {
+                throw new \InvalidArgumentException(self::PROPERTY_PHONE);
+            }
+
+            $defaultRegion = 'EN';
+        }
+
+        $phoneUtil = PhoneNumberUtil::getInstance();
+        try {
+            $phoneNumber = $phoneUtil->parse($input, $defaultRegion);
+            if ($phoneNumber instanceof PhoneNumber && $phoneUtil->isValidNumber($phoneNumber)) {
+                return $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
+            }
+        } catch (NumberParseException $e) {
+        }
+
+        throw new \InvalidArgumentException(self::PROPERTY_PHONE);
+    }
+
+    /**
+     * update user record
+     *
+     * @param IUser $user
+     * @param array $data
+     * @param bool $throwOnData Set to true if you can inform the user about invalid data
+     * @return array The potentially modified data (e.g. phone numbers are converted to E.164 format)
+     * @throws \InvalidArgumentException Message is the property that was invalid
+     */
+    public function updateUser(IUser $user, array $data, bool $throwOnData = false): array {
+        $userData = $this->getUser($user);
+        $updated = true;
+
+        if (isset($data[self::PROPERTY_PHONE]) && $data[self::PROPERTY_PHONE]['value'] !== '') {
+            try {
+                $data[self::PROPERTY_PHONE]['value'] = $this->parsePhoneNumber($data[self::PROPERTY_PHONE]['value']);
+            } catch (\InvalidArgumentException $e) {
+                if ($throwOnData) {
+                    throw $e;
+                }
+                $data[self::PROPERTY_PHONE]['value'] = '';
+            }
+        }
+
+        if (empty($userData)) {
+            $this->insertNewUser($user, $data);
+        } elseif ($userData !== $data) {
+            $data = $this->checkEmailVerification($userData, $data, $user);
+            $data = $this->updateVerifyStatus($userData, $data);
+            $this->updateExistingUser($user, $data);
+        } else {
+            // nothing needs to be done if new and old data set are the same
+            $updated = false;
+        }
+
+        if ($updated) {
+            $this->eventDispatcher->dispatch(
+                'OC\AccountManager::userUpdated',
+                new GenericEvent($user, $data)
+            );
+        }
+
+        return $data;
+    }
+
+    /**
+     * delete user from accounts table
+     *
+     * @param IUser $user
+     */
+    public function deleteUser(IUser $user) {
+        $uid = $user->getUID();
+        $query = $this->connection->getQueryBuilder();
+        $query->delete($this->table)
+            ->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
+            ->execute();
+
+        $this->deleteUserData($user);
+    }
+
+    /**
+     * delete user from accounts table
+     *
+     * @param IUser $user
+     */
+    public function deleteUserData(IUser $user): void {
+        $uid = $user->getUID();
+        $query = $this->connection->getQueryBuilder();
+        $query->delete($this->dataTable)
+            ->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
+            ->execute();
+    }
+
+    /**
+     * get stored data from a given user
+     *
+     * @param IUser $user
+     * @return array
+     */
+    public function getUser(IUser $user) {
+        $uid = $user->getUID();
+        $query = $this->connection->getQueryBuilder();
+        $query->select('data')
+            ->from($this->table)
+            ->where($query->expr()->eq('uid', $query->createParameter('uid')))
+            ->setParameter('uid', $uid);
+        $result = $query->execute();
+        $accountData = $result->fetchAll();
+        $result->closeCursor();
+
+        if (empty($accountData)) {
+            $userData = $this->buildDefaultUserRecord($user);
+            $this->insertNewUser($user, $userData);
+            return $userData;
+        }
+
+        $userDataArray = json_decode($accountData[0]['data'], true);
+        $jsonError = json_last_error();
+        if ($userDataArray === null || $userDataArray === [] || $jsonError !== JSON_ERROR_NONE) {
+            $this->logger->critical("User data of $uid contained invalid JSON (error $jsonError), hence falling back to a default user record");
+            return $this->buildDefaultUserRecord($user);
+        }
+
+        $userDataArray = $this->addMissingDefaultValues($userDataArray);
+
+        return $userDataArray;
+    }
+
+    public function searchUsers(string $property, array $values): array {
+        $chunks = array_chunk($values, 500);
+        $query = $this->connection->getQueryBuilder();
+        $query->select('*')
+            ->from($this->dataTable)
+            ->where($query->expr()->eq('name', $query->createNamedParameter($property)))
+            ->andWhere($query->expr()->in('value', $query->createParameter('values')));
+
+        $matches = [];
+        foreach ($chunks as $chunk) {
+            $query->setParameter('values', $chunk, IQueryBuilder::PARAM_STR_ARRAY);
+            $result = $query->execute();
+
+            while ($row = $result->fetch()) {
+                $matches[$row['value']] = $row['uid'];
+            }
+            $result->closeCursor();
+        }
+
+        return $matches;
+    }
+
+    /**
+     * check if we need to ask the server for email verification, if yes we create a cronjob
+     *
+     * @param $oldData
+     * @param $newData
+     * @param IUser $user
+     * @return array
+     */
+    protected function checkEmailVerification($oldData, $newData, IUser $user) {
+        if ($oldData[self::PROPERTY_EMAIL]['value'] !== $newData[self::PROPERTY_EMAIL]['value']) {
+            $this->jobList->add(VerifyUserData::class,
+                [
+                    'verificationCode' => '',
+                    'data' => $newData[self::PROPERTY_EMAIL]['value'],
+                    'type' => self::PROPERTY_EMAIL,
+                    'uid' => $user->getUID(),
+                    'try' => 0,
+                    'lastRun' => time()
+                ]
+            );
+            $newData[self::PROPERTY_EMAIL]['verified'] = self::VERIFICATION_IN_PROGRESS;
+        }
+
+        return $newData;
+    }
+
+    /**
+     * make sure that all expected data are set
+     *
+     * @param array $userData
+     * @return array
+     */
+    protected function addMissingDefaultValues(array $userData) {
+        foreach ($userData as $key => $value) {
+            if (!isset($userData[$key]['verified'])) {
+                $userData[$key]['verified'] = self::NOT_VERIFIED;
+            }
+        }
+
+        return $userData;
+    }
+
+    /**
+     * reset verification status if personal data changed
+     *
+     * @param array $oldData
+     * @param array $newData
+     * @return array
+     */
+    protected function updateVerifyStatus($oldData, $newData) {
+
+        // which account was already verified successfully?
+        $twitterVerified = isset($oldData[self::PROPERTY_TWITTER]['verified']) && $oldData[self::PROPERTY_TWITTER]['verified'] === self::VERIFIED;
+        $websiteVerified = isset($oldData[self::PROPERTY_WEBSITE]['verified']) && $oldData[self::PROPERTY_WEBSITE]['verified'] === self::VERIFIED;
+        $emailVerified = isset($oldData[self::PROPERTY_EMAIL]['verified']) && $oldData[self::PROPERTY_EMAIL]['verified'] === self::VERIFIED;
+
+        // keep old verification status if we don't have a new one
+        if (!isset($newData[self::PROPERTY_TWITTER]['verified'])) {
+            // keep old verification status if value didn't changed and an old value exists
+            $keepOldStatus = $newData[self::PROPERTY_TWITTER]['value'] === $oldData[self::PROPERTY_TWITTER]['value'] && isset($oldData[self::PROPERTY_TWITTER]['verified']);
+            $newData[self::PROPERTY_TWITTER]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_TWITTER]['verified'] : self::NOT_VERIFIED;
+        }
+
+        if (!isset($newData[self::PROPERTY_WEBSITE]['verified'])) {
+            // keep old verification status if value didn't changed and an old value exists
+            $keepOldStatus = $newData[self::PROPERTY_WEBSITE]['value'] === $oldData[self::PROPERTY_WEBSITE]['value'] && isset($oldData[self::PROPERTY_WEBSITE]['verified']);
+            $newData[self::PROPERTY_WEBSITE]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_WEBSITE]['verified'] : self::NOT_VERIFIED;
+        }
+
+        if (!isset($newData[self::PROPERTY_EMAIL]['verified'])) {
+            // keep old verification status if value didn't changed and an old value exists
+            $keepOldStatus = $newData[self::PROPERTY_EMAIL]['value'] === $oldData[self::PROPERTY_EMAIL]['value'] && isset($oldData[self::PROPERTY_EMAIL]['verified']);
+            $newData[self::PROPERTY_EMAIL]['verified'] = $keepOldStatus ? $oldData[self::PROPERTY_EMAIL]['verified'] : self::VERIFICATION_IN_PROGRESS;
+        }
+
+        // reset verification status if a value from a previously verified data was changed
+        if ($twitterVerified &&
+            $oldData[self::PROPERTY_TWITTER]['value'] !== $newData[self::PROPERTY_TWITTER]['value']
+        ) {
+            $newData[self::PROPERTY_TWITTER]['verified'] = self::NOT_VERIFIED;
+        }
+
+        if ($websiteVerified &&
+            $oldData[self::PROPERTY_WEBSITE]['value'] !== $newData[self::PROPERTY_WEBSITE]['value']
+        ) {
+            $newData[self::PROPERTY_WEBSITE]['verified'] = self::NOT_VERIFIED;
+        }
+
+        if ($emailVerified &&
+            $oldData[self::PROPERTY_EMAIL]['value'] !== $newData[self::PROPERTY_EMAIL]['value']
+        ) {
+            $newData[self::PROPERTY_EMAIL]['verified'] = self::NOT_VERIFIED;
+        }
+
+        return $newData;
+    }
+
+    /**
+     * add new user to accounts table
+     *
+     * @param IUser $user
+     * @param array $data
+     */
+    protected function insertNewUser(IUser $user, array $data): void {
+        $uid = $user->getUID();
+        $jsonEncodedData = json_encode($data);
+        $query = $this->connection->getQueryBuilder();
+        $query->insert($this->table)
+            ->values(
+                [
+                    'uid' => $query->createNamedParameter($uid),
+                    'data' => $query->createNamedParameter($jsonEncodedData),
+                ]
+            )
+            ->execute();
+
+        $this->deleteUserData($user);
+        $this->writeUserData($user, $data);
+    }
+
+    /**
+     * update existing user in accounts table
+     *
+     * @param IUser $user
+     * @param array $data
+     */
+    protected function updateExistingUser(IUser $user, array $data): void {
+        $uid = $user->getUID();
+        $jsonEncodedData = json_encode($data);
+        $query = $this->connection->getQueryBuilder();
+        $query->update($this->table)
+            ->set('data', $query->createNamedParameter($jsonEncodedData))
+            ->where($query->expr()->eq('uid', $query->createNamedParameter($uid)))
+            ->execute();
+
+        $this->deleteUserData($user);
+        $this->writeUserData($user, $data);
+    }
+
+    protected function writeUserData(IUser $user, array $data): void {
+        $query = $this->connection->getQueryBuilder();
+        $query->insert($this->dataTable)
+            ->values(
+                [
+                    'uid' => $query->createNamedParameter($user->getUID()),
+                    'name' => $query->createParameter('name'),
+                    'value' => $query->createParameter('value'),
+                ]
+            );
+        foreach ($data as $propertyName => $property) {
+            if ($propertyName === self::PROPERTY_AVATAR) {
+                continue;
+            }
+
+            $query->setParameter('name', $propertyName)
+                ->setParameter('value', $property['value']);
+            $query->execute();
+        }
+    }
+
+    /**
+     * build default user record in case not data set exists yet
+     *
+     * @param IUser $user
+     * @return array
+     */
+    protected function buildDefaultUserRecord(IUser $user) {
+        return [
+            self::PROPERTY_DISPLAYNAME =>
+                [
+                    'value' => $user->getDisplayName(),
+                    'scope' => self::VISIBILITY_CONTACTS_ONLY,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+            self::PROPERTY_ADDRESS =>
+                [
+                    'value' => '',
+                    'scope' => self::VISIBILITY_PRIVATE,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+            self::PROPERTY_WEBSITE =>
+                [
+                    'value' => '',
+                    'scope' => self::VISIBILITY_PRIVATE,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+            self::PROPERTY_EMAIL =>
+                [
+                    'value' => $user->getEMailAddress(),
+                    'scope' => self::VISIBILITY_CONTACTS_ONLY,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+            self::PROPERTY_AVATAR =>
+                [
+                    'scope' => self::VISIBILITY_CONTACTS_ONLY
+                ],
+            self::PROPERTY_PHONE =>
+                [
+                    'value' => '',
+                    'scope' => self::VISIBILITY_PRIVATE,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+            self::PROPERTY_TWITTER =>
+                [
+                    'value' => '',
+                    'scope' => self::VISIBILITY_PRIVATE,
+                    'verified' => self::NOT_VERIFIED,
+                ],
+        ];
+    }
+
+    private function parseAccountData(IUser $user, $data): Account {
+        $account = new Account($user);
+        foreach ($data as $property => $accountData) {
+            $account->setProperty($property, $accountData['value'] ?? '', $accountData['scope'] ?? self::VISIBILITY_PRIVATE, $accountData['verified'] ?? self::NOT_VERIFIED);
+        }
+        return $account;
+    }
+
+    public function getAccount(IUser $user): IAccount {
+        return $this->parseAccountData($user, $this->getUser($user));
+    }
 }