/**
 * Abiquo community edition
 * cloud management application for hybrid clouds
 * Copyright (C) 2008-2010 - Abiquo Holdings S.L.
 *
 * This application is free software; you can redistribute it and/or
 * modify it under the terms of the GNU LESSER GENERAL PUBLIC
 * LICENSE as published by the Free Software Foundation under
 * version 3 of the License
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * LESSER GENERAL PUBLIC LICENSE v.3 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
package com.abiquo.api.resources.config;

import java.util.Collection;
import java.util.List;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;

import org.apache.wink.common.annotations.Workspace;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

import com.abiquo.api.resources.AbstractResource;
import com.abiquo.api.services.EnterpriseService;
import com.abiquo.api.util.IRESTBuilder;
import com.abiquo.model.transport.LinksDto;
import com.abiquo.model.util.ModelTransformer;
import com.abiquo.server.core.enterprise.Privilege;
import com.abiquo.server.core.enterprise.PrivilegeDto;
import com.abiquo.server.core.enterprise.PrivilegesDto;

/**
 * @author scastro
 * @wiki The Privilege resource is used to manage the permissions. This page describes the method
 *       exposed to retrieve the privileges.
 */
@Path(PrivilegesResource.PRIVILEGES_PATH)
@Controller
@Workspace(workspaceTitle = "Abiquo configuration workspace", collectionTitle = "Privileges")
public class PrivilegesResource extends AbstractResource
{
    public static final String PRIVILEGES_PATH = "config/privileges";

    @Autowired
    private EnterpriseService service;

    /**
     * Returns all privileges from abiquo
     * 
     * @title Retrieve all privileges
     * @param restBuilder a Context-injected object to create the links of the Dto
     * @return a {PrivilegesDto} objec with all privileges from abiquo
     * @throws Exception
     */
    @GET
    @Produces(PrivilegesDto.MEDIA_TYPE)
    public PrivilegesDto getPrivileges(@Context final IRESTBuilder restBuilder) throws Exception
    {
        Collection<Privilege> ps = service.findAllPrivileges();

        return createAdminTransferObjects(ps, restBuilder);
    }

    public static PrivilegesDto createAdminTransferObjects(final Collection<Privilege> privs,
        final IRESTBuilder restBuilder) throws Exception
    {
        PrivilegesDto privileges = new PrivilegesDto();
        for (Privilege privilege : privs)
        {
            PrivilegeDto pDto =
                ModelTransformer.transportFromPersistence(PrivilegeDto.class, privilege);
            pDto.setLinks(restBuilder.buildPrivilegeListLink(pDto));
            privileges.add(pDto);
        }

        return privileges;
    }

    public static LinksDto getPrivilegesLinks(final IRESTBuilder restBuilder,
        final List<Privilege> privileges)
    {
        LinksDto links = new LinksDto();
        for (Privilege p : privileges)
        {
            PrivilegeDto pDto = new PrivilegeDto(p.getId(), p.getName());
            links.addLinks(restBuilder.buildPrivilegeListLink(pDto));
        }
        return links;
    }
}