package org.gcube.portlets.user.accountingdashboard.server.accounting;

import java.util.ArrayList;

import javax.servlet.http.HttpServletRequest;

import org.gcube.data.access.accounting.summary.access.AccountingDao;
import org.gcube.data.access.accounting.summary.access.model.ScopeDescriptor;
import org.gcube.portlets.user.accountingdashboard.shared.data.ScopeData;
import org.gcube.portlets.user.accountingdashboard.shared.exception.ServiceException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * @author Giancarlo Panichi
 *
 */
public class AccountingService {

	private static Logger logger = LoggerFactory.getLogger(AccountingService.class);

	private AccountingDao dao;

	public AccountingService(AccountingServiceType accountingServiceType) throws ServiceException {
		try {
			if (accountingServiceType == null) {
				logger.error("Invalid AccountingServiceType requested: null");
			}

			switch (accountingServiceType) {
			case CurrentScope:
				logger.debug("AccountingService: CurrentScope");
				dao = AccountingDao.get();
				break;
			case PortalContex:
				logger.debug("AccountingService: PortalContext");
				dao = AccountingDao.get(new PortalContextTreeProvider());
				break;
			default:
				logger.debug("AccountingService: CurrentScope");
				dao = AccountingDao.get();
				break;

			}
		} catch (Throwable e) {
			logger.error("Error retrieving Tree: " + e.getLocalizedMessage(), e);
			throw new ServiceException("Error retrieving Tree: " + e.getLocalizedMessage(), e);
		}

	}

	public ScopeData getTree(HttpServletRequest httpServletRequest) throws ServiceException {
		try {
			logger.debug("AccountingService GetTree()");
			ScopeDescriptor scopeDescriptor = dao.getTree(httpServletRequest);
			logger.debug("ScopeDescriptor: " + scopeDescriptor);
			ScopeData scopeData = getScopeData(scopeDescriptor);
			return scopeData;

		} catch (Throwable e) {
			logger.error("Error retrieving Tree: " + e.getLocalizedMessage(), e);
			throw new ServiceException("Error retrieving Tree: " + e.getLocalizedMessage(), e);
		}
	}

	private ScopeData getScopeData(ScopeDescriptor scopeDescriptor) {
		ScopeData scopeData = null;
		if (scopeDescriptor != null) {
			if (scopeDescriptor.hasChildren()) {
				ArrayList<ScopeData> childs = new ArrayList<>();
				for (ScopeDescriptor sd : scopeDescriptor.getChildren()) {
					childs.add(getScopeData(sd));
				}
				scopeData = new ScopeData(scopeDescriptor.getId(), scopeDescriptor.getName(), childs);
			} else {
				scopeData = new ScopeData(scopeDescriptor.getId(), scopeDescriptor.getName(), null);
			}
		}
		return scopeData;

	}

}