/*******************************************************************************
 * Copyright (c) 2008-2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 ******************************************************************************/

package org.eclipse.emf.emfstore.server.core.subinterfaces;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.emfstore.common.model.EMFStoreProperty;
import org.eclipse.emf.emfstore.server.core.AbstractEmfstoreInterface;
import org.eclipse.emf.emfstore.server.core.AbstractSubEmfstoreInterface;
import org.eclipse.emf.emfstore.server.exceptions.EmfStoreException;
import org.eclipse.emf.emfstore.server.exceptions.FatalEmfStoreException;
import org.eclipse.emf.emfstore.server.model.ProjectHistory;
import org.eclipse.emf.emfstore.server.model.ProjectId;

/**
 * The {@link EMFStorePropertiesSubInterfaceImpl} class is responsible for
 * handling modifications of EMFStore properties.
 * 
 * @author groeber
 */
public class EMFStorePropertiesSubInterfaceImpl extends AbstractSubEmfstoreInterface {

	/**
	 * @param parentInterface
	 *            the parent interface
	 * @throws FatalEmfStoreException
	 *             if any fatal error occurs
	 */
	public EMFStorePropertiesSubInterfaceImpl(AbstractEmfstoreInterface parentInterface) throws FatalEmfStoreException {
		super(parentInterface);
	}

	/**
	 * Set the Shared Properties from client on server.
	 * 
	 * @param properties
	 *            properties to be set
	 * @param projectId
	 *            Project where the properties should be saved
	 * @throws EmfStoreException
	 *             if the specified project does not exist
	 */
	public void setProperties(List<EMFStoreProperty> properties, ProjectId projectId) throws EmfStoreException {
		EList<ProjectHistory> serverProjects = getServerSpace().getProjects();
		boolean projectFound = false;

		for (ProjectHistory currentHistory : serverProjects) {
			if (currentHistory.getProjectId().equals(projectId)) {
				projectFound = true;
				for (EMFStoreProperty prop : properties) {
					currentHistory.getSharedProperties().add(prop);
				}
				break;
			}
		}

		if (projectFound) {
			try {
				getServerSpace().save();
			} catch (IOException e) {
				throw new EmfStoreException("Cannot set the properties on the server.");
			}
		} else {
			throw new EmfStoreException("The Project does not exist on the server. Cannot set the properties.");
		}
	}

	/**
	 * Return the Properties for a specific Project.
	 * 
	 * @param projectId
	 *            ProjectId for the properties
	 * @return EMap containing the Key string and the property value
	 * @throws EmfStoreException
	 *             if specified property does not exist
	 */
	public List<EMFStoreProperty> getProperties(ProjectId projectId) throws EmfStoreException {
		EList<ProjectHistory> serverProjects = getServerSpace().getProjects();

		ProjectHistory currentHistory = null;
		for (ProjectHistory history : serverProjects) {
			if (history.getProjectId().equals(projectId)) {
				currentHistory = history;
				break;
			}
		}

		if (currentHistory != null) {
			List<EMFStoreProperty> temp = new ArrayList<EMFStoreProperty>();
			for (EMFStoreProperty prop : currentHistory.getSharedProperties()) {
				temp.add(prop);
			}
			return temp;
		}
		throw new EmfStoreException("The Project does not exist on the server. Cannot set the properties.");
	}

}