package net.sourceforge.fenixedu.presentationTier.renderers;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.SortedSet;
import java.util.TreeSet;

import net.sourceforge.fenixedu.domain.Section;
import net.sourceforge.fenixedu.domain.Site;
import net.sourceforge.fenixedu.domain.UnitSite;
import net.sourceforge.fenixedu.domain.contents.Content;
import net.sourceforge.fenixedu.domain.contents.Node;
import net.sourceforge.fenixedu.presentationTier.renderers.functionalities.MenuRenderer;
import net.sourceforge.fenixedu.presentationTier.servlets.filters.functionalities.FilterFunctionalityContext;
import pt.utl.ist.fenix.tools.util.i18n.MultiLanguageString;

/**
 * This is a specific renderer used to create the side menu of a UnitSite. This
 * renderer is very similar to the standard Site renderer except that it uses
 * the subsections of a specific top level section.
 * 
 * <p>
 * <ul>
 * <li>Side
 * <ul>
 * <li>A
 * <li>B
 * </ul>
 * <li>C
 * </ul>
 * If the site contains a section structure like the one presented then only the
 * subsections of top (A and B) are presented.
 * 
 * @author cfgi
 */
public class UnitSiteSideMenuRenderer extends UnitSiteMenuRenderer {

    @Override
    protected MultiLanguageString getTargetSectionName() {
	return i18n("Lateral", "Side");
    }

    @Override
    protected List<Section> getBaseSections(Site site) {
	UnitSite unitSite = (UnitSite) site;

	TreeSet<Section> treeSet = new TreeSet<Section>(Section.COMPARATOR_BY_ORDER);
	// treeSet.addAll(unitSite.getIntroductionSections());

	List<Section> sections = new ArrayList<Section>();

	sections.addAll(treeSet);
	// sections.addAll(site.getOrderedTemplateSections());

	return sections;
    }

    @Override
    protected SortedSet<Section> getTargetSubSections(Section section) {
	// UnitSite unitSite = (UnitSite) section.getSite();
	TreeSet<Section> treeSet = new TreeSet<Section>(Section.COMPARATOR_BY_ORDER);

	for (Section subSection : section.getAssociatedSections()) {
	    // if (unitSite.hasIntroductionSections(subSection)) {
	    // continue;
	    // }

	    treeSet.add(subSection);
	}

	return treeSet;
    }

    @Override
    protected String getPath(FilterFunctionalityContext context, Content content) {
	Site site = (Site) context.getLastContentInPath(Site.class);
	Section sideSection = getSideSection(site);
	List<Content> contents = sideSection.getPathTo(content);
	List<String> subPaths = new ArrayList<String>();
	if (!contents.isEmpty()) {
	    for (Content contentPath : contents.subList(0, contents.size() - 1)) {
		subPaths.add(contentPath.getNormalizedName().getContent());
	    }
	}
	return MenuRenderer.findPathFor(context.getRequest().getContextPath(), content, context, isTemplatedContent(
		(Site) context.getSelectedContainer(), content) ? Collections.EMPTY_LIST : subPaths);
    }

    private Section getSideSection(Site site) {
	for (Node node : site.getChildren()) {
	    Content child = node.getChild();
	    if (child instanceof Section && child.getName().equals(getTargetSectionName())) {
		return (Section) child;
	    }
	}
	return null;
    }
}