/*
 * Created on 2004/08/27
 * 
 */
package net.sourceforge.fenixedu.presentationTier.Action.manager;

import net.sourceforge.fenixedu.applicationTier.Servico.manager.DeleteFAQEntry;

import net.sourceforge.fenixedu.applicationTier.Servico.manager.CreateFAQEntry;

import net.sourceforge.fenixedu.applicationTier.Servico.manager.DeleteFAQSection;

import net.sourceforge.fenixedu.applicationTier.Servico.manager.CreateFAQSection;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.fenixedu.applicationTier.Servico.manager.ReadFAQEntries;
import net.sourceforge.fenixedu.applicationTier.Servico.manager.ReadFAQSections;
import net.sourceforge.fenixedu.dataTransferObject.support.InfoFAQEntry;
import net.sourceforge.fenixedu.dataTransferObject.support.InfoFAQSection;
import net.sourceforge.fenixedu.presentationTier.Action.base.FenixDispatchAction;
import net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager.utils.ServiceUtils;

import org.apache.commons.lang.StringUtils;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

/**
 * @author Luis Crus
 */
public class ManageFAQDA extends FenixDispatchAction {

    public ActionForward prepare(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
	    throws Exception {

	List infoFAQSections = (List) ReadFAQSections.run();
	request.setAttribute("infoFAQSections", infoFAQSections);

	List infoFAQEntries = (List) ReadFAQEntries.run();
	request.setAttribute("infoFAQEntries", infoFAQEntries);

	List rootInfoFAQSections = new ArrayList(infoFAQSections);
	Map processedSection = new HashMap();
	getSortedInfoFAQSections(rootInfoFAQSections, processedSection, null, 0);
	request.setAttribute("rootInfoFAQSections", rootInfoFAQSections);

	List rootEntries = getSortedInfoFAQEnrtries(infoFAQEntries, processedSection);
	request.setAttribute("rootInfoFAQEntries", rootEntries);

	return mapping.findForward("Manage");
    }

    private List getSortedInfoFAQEnrtries(List infoFAQEntries, Map processedSection) {
	List rootEntries = new ArrayList();

	for (int i = 0; i < infoFAQEntries.size(); i++) {
	    InfoFAQEntry infoFAQEntry = (InfoFAQEntry) infoFAQEntries.get(i);
	    InfoFAQSection infoFAQSection = infoFAQEntry.getParentSection();
	    if (infoFAQSection != null) {
		InfoFAQSection infoFAQParentSection = (InfoFAQSection) processedSection.get(infoFAQSection.getIdInternal());
		if (infoFAQParentSection.getEntries() == null) {
		    infoFAQParentSection.setEntries(new ArrayList());
		}
		infoFAQParentSection.getEntries().add(infoFAQEntry);
	    } else {
		rootEntries.add(infoFAQEntry);
	    }
	}

	return rootEntries;
    }

    private void getSortedInfoFAQSections(List copyOfInfoFAQSections, Map processedSection, List sectionsInPreviousLevel,
	    int numberRootSections) {
	List sectionsToRemove = new ArrayList();
	List nextSectionsInPreviousLevel = new ArrayList();
	for (int i = 0; i < copyOfInfoFAQSections.size(); i++) {
	    InfoFAQSection infoFAQSection = (InfoFAQSection) copyOfInfoFAQSections.get(i);
	    if (sectionsInPreviousLevel == null && infoFAQSection.getParentSection() == null) {
		nextSectionsInPreviousLevel.add(infoFAQSection.getIdInternal());
		processedSection.put(infoFAQSection.getIdInternal(), infoFAQSection);
	    } else if (sectionsInPreviousLevel != null && infoFAQSection.getParentSection() != null
		    && sectionsInPreviousLevel.contains(infoFAQSection.getParentSection().getIdInternal())) {
		InfoFAQSection infoFAQParentSection = (InfoFAQSection) processedSection.get(infoFAQSection.getParentSection()
			.getIdInternal());
		if (infoFAQParentSection != null) {
		    if (infoFAQParentSection.getSubSections() == null) {
			infoFAQParentSection.setSubSections(new ArrayList());
		    }
		    infoFAQParentSection.getSubSections().add(infoFAQSection);
		    sectionsToRemove.add(infoFAQSection);
		    nextSectionsInPreviousLevel.add(infoFAQSection.getIdInternal());
		    processedSection.put(infoFAQSection.getIdInternal(), infoFAQSection);
		}
	    }
	}
	if (sectionsInPreviousLevel == null) {
	    numberRootSections = nextSectionsInPreviousLevel.size();
	}
	copyOfInfoFAQSections.removeAll(sectionsToRemove);
	if (copyOfInfoFAQSections.size() != numberRootSections) {
	    getSortedInfoFAQSections(copyOfInfoFAQSections, processedSection, nextSectionsInPreviousLevel, numberRootSections);
	}
    }

    public ActionForward createFAQSection(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	DynaActionForm dynaActionForm = (DynaActionForm) form;
	String parentSectionId = (String) dynaActionForm.get("parentSectionId");
	String sectionName = (String) dynaActionForm.get("sectionName");

	InfoFAQSection infoFAQSection = new InfoFAQSection();
	if (parentSectionId != null && parentSectionId.length() > 0 && StringUtils.isNumeric(parentSectionId)) {
	    infoFAQSection.setParentSection(new InfoFAQSection());
	    infoFAQSection.getParentSection().setIdInternal(Integer.valueOf(parentSectionId));
	}
	infoFAQSection.setSectionName(sectionName);

	CreateFAQSection.run(infoFAQSection);

	return mapping.findForward("Manage");
    }

    public ActionForward deleteFAQSection(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	String sectionIdString = request.getParameter("sectionId");

	if (sectionIdString != null && StringUtils.isNumeric(sectionIdString)) {
	    Integer sectionId = Integer.valueOf(sectionIdString);

	    DeleteFAQSection.run(sectionId);
	}

	return mapping.findForward("Manage");
    }

    public ActionForward createFAQEntry(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	DynaActionForm dynaActionForm = (DynaActionForm) form;
	String parentSectionId = (String) dynaActionForm.get("parentSectionId");
	String question = (String) dynaActionForm.get("question");
	String answer = (String) dynaActionForm.get("answer");

	InfoFAQSection infoFAQSection = null;
	if (parentSectionId != null && parentSectionId.length() > 0 && StringUtils.isNumeric(parentSectionId)) {
	    infoFAQSection = new InfoFAQSection();
	    infoFAQSection.setIdInternal(Integer.valueOf(parentSectionId));
	}

	InfoFAQEntry infoFAQEntry = new InfoFAQEntry();
	infoFAQEntry.setQuestion(question);
	infoFAQEntry.setAnswer(answer);
	infoFAQEntry.setParentSection(infoFAQSection);

	CreateFAQEntry.run(infoFAQEntry);

	return mapping.getInputForward();
    }

    public ActionForward deleteFAQEntry(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws Exception {
	String entryIdString = request.getParameter("entryId");

	if (entryIdString != null && StringUtils.isNumeric(entryIdString)) {
	    Integer entryId = Integer.valueOf(entryIdString);

	    DeleteFAQEntry.run(entryId);
	}

	return mapping.getInputForward();
    }

}