package envoy.server.processors;

import static envoy.server.Startup.config;

import java.util.HashSet;

import envoy.event.*;

import envoy.server.data.PersistenceManager;
import envoy.server.net.*;

/**
 * @author Maximilian Käfer
 * @since Envoy Server Standalone v0.1-beta
 */
public final class GroupCreationProcessor implements ObjectProcessor<GroupCreation> {

	private final PersistenceManager	persistenceManager	= PersistenceManager.getInstance();
	private final ConnectionManager		connectionManager	= ConnectionManager.getInstance();

	@Override
	public void process(GroupCreation groupCreation, long socketID, ObjectWriteProxy writeProxy) {
		// Don't allow the creation of groups if manually disabled
		if (!config.isGroupSupportEnabled()) {
			writeProxy.write(socketID, new GroupCreationResult());
			return;
		}
		final envoy.server.data.Group group = new envoy.server.data.Group();
		group.setName(groupCreation.get());
		group.setContacts(new HashSet<>());
		persistenceManager.addContact(group);
		groupCreation.getInitialMemberIDs()
			.stream()
			.map(persistenceManager::getUserByID)
			.forEach(member -> persistenceManager.addContactBidirectional(member, group));
		persistenceManager.addContactBidirectional(
			persistenceManager.getUserByID(connectionManager.getUserIDBySocketID(socketID)), group);
		writeProxy.writeToOnlineContacts(group.getContacts(),
			new GroupCreationResult(group.toCommon()));
	}
}