/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE and NOTICE files at the root of the source
 * tree and available online at
 *
 * http://www.dspace.org/license/
 */
package org.dspace.app.xmlui.aspect.artifactbrowser;

import org.apache.cocoon.caching.CacheableProcessingComponent;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.util.HashUtil;
import org.apache.excalibur.source.SourceValidity;
import org.apache.excalibur.source.impl.validity.NOPValidity;
import org.dspace.app.requestitem.RequestItem;
import org.dspace.app.requestitem.RequestItemAuthor;
import org.dspace.app.requestitem.RequestItemAuthorExtractor;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.ContextUtil;
import org.dspace.app.xmlui.utils.UIException;
import org.dspace.app.xmlui.wing.Message;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.*;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Item;
import org.dspace.core.Context;
import org.dspace.core.I18nUtil;
import org.dspace.utils.DSpace;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.io.Serializable;
import java.sql.SQLException;
import java.text.MessageFormat;

/**
 * Form for making initial contact with the requester
 */
public class ItemRequestContactRequester extends AbstractDSpaceTransformer implements CacheableProcessingComponent
{
    /** Language Strings */
    private static final Message T_title =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.title");

    private static final Message T_dspace_home =
            message("xmlui.general.dspace_home");

    private static final Message T_trail =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.trail");

    private static final Message T_head =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.head");

    private static final Message T_para1 =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.para1");

    private static final Message T_mail =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.mail");

    private static final Message T_back =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.back");

    private static final Message T_toEmail =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.toEmail");

    private static final Message T_message =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.message");

    private static final Message T_subject =
            message("xmlui.ArtifactBrowser.ItemRequestContactRequester.subject");

    /**
     * Generate the unique caching key.
     * This key must be unique inside the space of this component.
     */
    public Serializable getKey() {

        String token = parameters.getParameter("token", "");
        String contactPerson = parameters.getParameter("contactPerson", "requester");

        return HashUtil.hash(token + contactPerson);
    }

    /**
     * Generate the cache validity object.
     */
    public SourceValidity getValidity()
    {
        return NOPValidity.SHARED_INSTANCE;
    }

    public void addPageMeta(PageMeta pageMeta) throws SAXException,
            WingException, UIException, SQLException, IOException,
            AuthorizeException
    {
        pageMeta.addMetadata("title").addContent(T_title);

        pageMeta.addTrailLink(contextPath + "/",T_dspace_home);
        pageMeta.addTrail().addContent(T_trail);
    }

    public void addBody(Body body) throws SAXException, WingException,
            UIException, SQLException, IOException, AuthorizeException
    {
        Request request = ObjectModelHelper.getRequest(objectModel);
        Context context = ContextUtil.obtainContext(objectModel);

        String token = (String) request.getAttribute("token");
        RequestItem requestItem = RequestItem.findByToken(context, token);

        Item item = Item.find(context, requestItem.getItemID());

        RequestItemAuthor requestItemAuthor = new DSpace()
                .getServiceManager()
                .getServiceByName(RequestItemAuthorExtractor.class.getName(),
                        RequestItemAuthorExtractor.class)
                .getRequestItemAuthor(context, item);

        Object[] args = new String[]{
                requestItem.getReqName(),
                requestItemAuthor.getFullName(),
                requestItemAuthor.getEmail()
        };

        String subject = I18nUtil.getMessage("itemRequest.response.subject.contactRequester");
        String messageTemplate = MessageFormat.format(I18nUtil.getMessage("itemRequest.response.body.contactRequester", context), args);

        Division itemRequest = body.addInteractiveDivision("itemRequest-form",
                request.getRequestURI(),Division.METHOD_POST,"primary");
        itemRequest.setHead(T_head);

        itemRequest.addPara(T_para1);

        List form = itemRequest.addList("form",List.TYPE_FORM);

        Text toEmail = form.addItem().addText("to");
        toEmail.setLabel(T_toEmail);
        toEmail.setValue(requestItem.getReqEmail());
        toEmail.setDisabled(true);

        Text subj = form.addItem().addText("subject");
        subj.setLabel(T_subject);
        subj.setValue(subject);
        subj.setSize(60);
        TextArea message = form.addItem().addTextArea("message");
        message.setSize(20, 0);
        message.setLabel(T_message);
        message.setValue(parameters.getParameter("message",messageTemplate));
        form.addItem().addHidden("contactPerson").setValue("requester");
        form.addItem().addButton("back").setValue(T_back);
        form.addItem().addButton("mail").setValue(T_mail);
    }
}