getAddress(); } try { // Check if the contact is already in the database $statement = Database::getConnection()->prepare('SELECT COUNT(*) FROM contacts WHERE peer_uuid=:peer AND contact_peer_address=:address'); $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':address', $contactAddress); $statement->execute(); return $statement->fetchColumn() > 0; } catch(PDOException $e) { throw new DatabaseOperationException('Failed to check if a contact exists in the database', $e); } } /** * Creates a new contact associated with the given peer UUID and contact address * in the database, with a specified relationship type. * * @param string $peerUuid The unique identifier of the peer. * @param string|PeerAddress $contactAddress The contact's address, either as a string or a PeerAddress instance. * @param ContactRelationshipType $relationship The type of relationship between the peer and the contact. Defaults to ContactRelationshipType::MUTUAL. * @return string The UUID of the newly created contact. * @throws DatabaseOperationException If the operation fails. */ public static function createContact(string $peerUuid, string|PeerAddress $contactAddress, ContactRelationshipType $relationship=ContactRelationshipType::MUTUAL): string { if($contactAddress instanceof PeerAddress) { $contactAddress = $contactAddress->getAddress(); } $uuid = UuidV4::v4()->toRfc4122(); try { // Insert the contact into the database $statement = Database::getConnection()->prepare('INSERT INTO contacts (uuid, peer_uuid, contact_peer_address, relationship) VALUES (:uuid, :peer, :address, :relationship)'); $statement->bindParam(':uuid', $uuid); $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':address', $contactAddress); $relationship = $relationship->value; $statement->bindParam(':relationship', $relationship); $statement->execute(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to create a new contact in the database', $e); } return $uuid; } /** * Retrieves the total number of contacts associated with a specific peer. * * @param string $peerUuid The unique identifier for the peer whose contact count is to be retrieved. * @return int The total number of contacts for the given peer. * @throws DatabaseOperationException If the database query fails. */ public static function getContactCount(string $peerUuid): int { try { // Get the contact count from the database $statement = Database::getConnection()->prepare('SELECT COUNT(*) FROM contacts WHERE peer_uuid=:peer'); $statement->bindParam(':peer', $peerUuid); $statement->execute(); return $statement->fetchColumn(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to get the contact count from the database', $e); } } /** * Retrieves a specific contact associated with a peer based on the contact's address. * * @param string $peerUuid The unique identifier for the peer whose contact is to be retrieved. * @param string|PeerAddress $contactAddress The address of the contact, either as a string or a PeerAddress object. * @return ContactDatabaseRecord|null The retrieved ContactRecord instance if found, or null if no matching contact exists. * @throws DatabaseOperationException If the database query fails. */ public static function getContact(string $peerUuid, string|PeerAddress $contactAddress): ?ContactDatabaseRecord { if($contactAddress instanceof PeerAddress) { $contactAddress = $contactAddress->getAddress(); } try { // Get the contact from the database $statement = Database::getConnection()->prepare('SELECT * FROM contacts WHERE peer_uuid=:peer AND contact_peer_address=:address LIMIT 1'); $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':address', $contactAddress); $statement->execute(); $result = $statement->fetch(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to get a contact from the database', $e); } if($result === false) { return null; } return ContactDatabaseRecord::fromArray($result); } /** * Deletes a specific contact associated with a given peer. * * @param string $peerUuid The unique identifier for the peer whose contact is to be deleted. * @param string|PeerAddress $contactAddress The address of the contact to be deleted. Can be provided as a string or a PeerAddress instance. * @return void * @throws DatabaseOperationException If the database query fails. */ public static function deleteContact(string $peerUuid, string|PeerAddress $contactAddress): void { if($contactAddress instanceof PeerAddress) { $contactAddress = $contactAddress->getAddress(); } try { $statement = Database::getConnection()->prepare('DELETE FROM contacts WHERE peer_uuid=:peer AND contact_peer_address=:address'); $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':address', $contactAddress); $statement->execute(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to delete a contact from the database', $e); } } /** * Updates the relationship type of a contact associated with a specific peer. * * @param string $peerUuid The unique identifier for the peer whose contact relationship is to be updated. * @param string|PeerAddress $contactAddress The address of the contact to update. Can be provided as a string or an instance of PeerAddress. * @param ContactRelationshipType $relationship The new relationship type to assign to the contact. * @return void * @throws DatabaseOperationException If the database query fails. */ public static function updateContactRelationship(string $peerUuid, string|PeerAddress $contactAddress, ContactRelationshipType $relationship): void { if($contactAddress instanceof PeerAddress) { $contactAddress = $contactAddress->getAddress(); } try { $statement = Database::getConnection()->prepare('UPDATE contacts SET relationship=:relationship WHERE peer_uuid=:peer AND contact_peer_address=:address'); $relationship = $relationship->value; $statement->bindParam(':relationship', $relationship); $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':address', $contactAddress); $statement->execute(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to update the relationship for a contact in the database', $e); } } /** * Retrieves a contact by its unique identifier. * * @param string $uuid The unique identifier of the contact to retrieve. * @return ContactDatabaseRecord|null A ContactRecord instance if the contact is found, or null if no contact exists with the provided UUID. * @throws DatabaseOperationException If the database query fails. */ public static function getContactByUuid(string $uuid): ?ContactDatabaseRecord { try { // Get the contact from the database $statement = Database::getConnection()->prepare('SELECT * FROM contacts WHERE uuid=:uuid LIMIT 1'); $statement->bindParam(':uuid', $uuid); $statement->execute(); $result = $statement->fetch(); } catch(PDOException $e) { throw new DatabaseOperationException('Failed to get a contact from the database', $e); } if($result === false) { return null; } return ContactDatabaseRecord::fromArray($result); } /** * Retrieves a list of contacts associated with a specific peer. * * @param string $peerUuid The unique identifier for the peer whose contacts are to be retrieved. * @param int $limit The maximum number of contacts to retrieve per page. Defaults to 100. * @param int $page The page number to retrieve. Defaults to 1. * @return ContactDatabaseRecord[] An array of ContactRecord instances representing the contacts for the given peer. * @throws DatabaseOperationException If the database query fails. */ public static function getContacts(string $peerUuid, int $limit=100, int $page=1): array { if ($page < 1) { $page = 1; } if ($limit < 1) { $limit = 1; } $contacts = []; try { $statement = Database::getConnection()->prepare("SELECT * FROM contacts WHERE peer_uuid=:peer ORDER BY created DESC LIMIT :limit OFFSET :offset"); $offset = ($page - 1) * $limit; $statement->bindParam(':peer', $peerUuid); $statement->bindParam(':limit', $limit, PDO::PARAM_INT); $statement->bindParam(':offset', $offset, PDO::PARAM_INT); $statement->execute(); // Fetch results $results = $statement->fetchAll(PDO::FETCH_ASSOC); // Convert results to ContactRecord instances foreach ($results as $result) { $contacts[] = ContactDatabaseRecord::fromArray($result); } } catch (PDOException $e) { throw new DatabaseOperationException('Failed to get contacts from the database', $e); } return $contacts; } }