/*
 * Copyright (C) 2011 SeqWare
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.sourceforge.seqware.webservice.resources.tables;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import net.sf.beanlib.hibernate3.Hibernate3DtoCopier;
import net.sourceforge.seqware.common.business.WorkflowService;
import net.sourceforge.seqware.common.factory.BeanFactory;
import net.sourceforge.seqware.common.model.Registration;
import net.sourceforge.seqware.common.model.Workflow;
import net.sourceforge.seqware.common.model.lists.WorkflowList;
import net.sourceforge.seqware.common.util.Log;
import net.sourceforge.seqware.common.util.xmltools.JaxbObject;
import net.sourceforge.seqware.common.util.xmltools.XmlTools;
import org.restlet.data.Status;
import org.restlet.representation.Representation;
import org.restlet.resource.Get;
import org.restlet.resource.Post;
import org.restlet.resource.ResourceException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;

/**
 * <p>
 * WorkflowResource class.
 * </p>
 * 
 * @author mtaschuk
 * @version $Id: $Id
 */
public class WorkflowResource extends DatabaseResource {

    /**
     * <p>
     * Constructor for WorkflowResource.
     * </p>
     */
    public WorkflowResource() {
        super("Workflows");
    }

    /**
     * <p>
     * getXml.
     * </p>
     */
    @Get
    public void getXml() {
        authenticate();
        WorkflowService ss = BeanFactory.getWorkflowServiceBean();
        Document line = null;

        if (queryValues.get("id") != null) {
            Workflow p = (Workflow) testIfNull(ss.findByID(parseClientInt(queryValues.get("id"))));
            line = detachWorkflow(p);

        } else if (queryValues.get("name") != null) {
            List<Workflow> workflows = (List<Workflow>) testIfNull(ss.findByName(queryValues.get("name")));

            if (queryValues.get("version") != null) {
                String version = queryValues.get("version").trim();
                for (Workflow workflow : workflows) {
                    if (version.equals(workflow.getVersion())) {
                        line = detachWorkflow(workflow);
                    }
                }
            } else {
                line = detachWorkflowList(workflows);
            }

        } else {
            List<Workflow> workflows = ss.list();
            line = detachWorkflowList(workflows);
        }

        getResponse().setEntity(XmlTools.getRepresentation(line));
    }

    private Document detachWorkflow(Workflow workflow) {
        Hibernate3DtoCopier copier = new Hibernate3DtoCopier();
        JaxbObject<Workflow> jaxbTool = new JaxbObject<>();
        Workflow dto = copier.hibernate2dto(Workflow.class, workflow);
        Document line = XmlTools.marshalToDocument(jaxbTool, dto);
        return line;
    }

    private Document detachWorkflowList(List<Workflow> workflows) {
        Hibernate3DtoCopier copier = new Hibernate3DtoCopier();
        JaxbObject<WorkflowList> jaxbTool = new JaxbObject<>();
        WorkflowList eList = new WorkflowList();
        eList.setList(new ArrayList());

        for (Workflow workflow : workflows) {
            Workflow dto = copier.hibernate2dto(Workflow.class, workflow);
            eList.add(dto);
        }
        Document line = XmlTools.marshalToDocument(jaxbTool, eList);
        return line;
    }

    /**
     * <p>
     * postJaxb.
     * </p>
     * 
     * @param entity
     *            a {@link org.restlet.representation.Representation} object.
     */
    @Post("xml")
    public void postJaxb(Representation entity) {
        authenticate();
        try {
            JaxbObject<Workflow> jo = new JaxbObject<>();
            String text = entity.getText();
            Workflow p;
            try {
                p = (Workflow) XmlTools.unMarshal(jo, new Workflow(), text);
            } catch (SAXException ex) {
                throw new ResourceException(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY, ex);
            }
            if (p.getOwner() != null) {
                Registration r = BeanFactory.getRegistrationServiceBean().findByEmailAddress(p.getOwner().getEmailAddress());
                if (r != null) {
                    p.setOwner(r);
                } else {
                    Log.info("Could not be found: owner" + p.getOwner());
                }
            } else {
                p.setOwner(registration);
            }
            // persist p
            WorkflowService ws = BeanFactory.getWorkflowServiceBean();
            Integer id = ws.insert(registration, p);
            Workflow w = (Workflow) testIfNull(ws.findBySWAccession(id));
            Hibernate3DtoCopier copier = new Hibernate3DtoCopier();
            Workflow detachedW = copier.hibernate2dto(Workflow.class, w);

            Document line = XmlTools.marshalToDocument(jo, detachedW);
            getResponse().setEntity(XmlTools.getRepresentation(line));
            getResponse().setLocationRef(getRequest().getRootRef() + "/workflows/" + detachedW.getSwAccession());
            getResponse().setStatus(Status.SUCCESS_CREATED);

        } catch (SecurityException e) {
            getResponse().setStatus(Status.CLIENT_ERROR_FORBIDDEN, e);
        } catch (IOException e) {
            e.printStackTrace();
            getResponse().setStatus(Status.CLIENT_ERROR_BAD_REQUEST, e);
        } catch (Exception e) {
            e.printStackTrace();
            getResponse().setStatus(Status.SERVER_ERROR_INTERNAL, e);
        }

    }
}