001/*
002 *  Copyright 2019 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.plugins.odfweb.service.search;
017
018import java.util.Collections;
019import java.util.Date;
020import java.util.List;
021import java.util.Locale;
022import java.util.Optional;
023import java.util.stream.Collectors;
024
025import org.apache.cocoon.xml.AttributesImpl;
026import org.apache.cocoon.xml.XMLUtils;
027import org.slf4j.Logger;
028import org.xml.sax.ContentHandler;
029import org.xml.sax.SAXException;
030
031import org.ametys.cms.repository.Content;
032import org.ametys.core.util.DateUtils;
033import org.ametys.odf.ProgramItem;
034import org.ametys.odf.course.Course;
035import org.ametys.odf.program.AbstractProgram;
036import org.ametys.odf.program.Program;
037import org.ametys.plugins.odfweb.repository.CoursePage;
038import org.ametys.plugins.repository.AmetysObject;
039import org.ametys.web.frontoffice.search.metamodel.ReturnableSaxer;
040import org.ametys.web.frontoffice.search.metamodel.impl.PageReturnable;
041import org.ametys.web.frontoffice.search.metamodel.impl.PageSaxer;
042import org.ametys.web.frontoffice.search.requesttime.SearchComponentArguments;
043import org.ametys.web.repository.page.Page;
044import org.ametys.web.repository.site.Site;
045
046/**
047 * {@link ReturnableSaxer} for {@link CourseReturnable}
048 * <br>
049 * <br>Note for developpers: This Saxer extends PageSaxer to have access to its protected method #saxContent()
050 */
051public class CourseSaxer extends PageSaxer
052{
053    private CourseReturnable _courseReturnable;
054
055    /**
056     * Constructor
057     * @param pageReturnable The course returnable (needed for superclass)
058     * @param courseReturnable The associated returnable on courses
059     */
060    public CourseSaxer(PageReturnable pageReturnable, CourseReturnable courseReturnable)
061    {
062        super(pageReturnable);
063        _courseReturnable = courseReturnable;
064    }
065    
066    @Override
067    public boolean canSax(AmetysObject hit, Logger logger, SearchComponentArguments args)
068    {
069        return hit instanceof Course;
070    }
071    
072    @Override
073    public void sax(ContentHandler contentHandler, AmetysObject hit, Logger logger, SearchComponentArguments args) throws SAXException
074    {
075        Course course = (Course) hit;
076        _saxCourseContent(contentHandler, course, logger, args);
077        
078        // Get the first course page found
079        Optional<CoursePage> coursePage = _resolveCoursePage(course, args.currentSite());
080        if (coursePage.isPresent())
081        {
082            Page page = coursePage.get();
083            XMLUtils.createElement(contentHandler, "uri", page.getSitemap().getName() + "/" + page.getPathInSitemap());
084        }
085        
086        _saxCoursePages(contentHandler, course);
087    }
088    
089    private Optional<CoursePage> _resolveCoursePage(Course course, Site currentSite)
090    {
091        return Optional.of(_courseReturnable._odfPageResolver)
092                .map(res -> res.getCoursePage(course, (AbstractProgram) null, currentSite.getName()));
093    }
094    
095    private void _saxCourseContent(ContentHandler contentHandler, Course course, Logger logger, SearchComponentArguments args) throws SAXException
096    {
097        XMLUtils.createElement(contentHandler, "title", course.getTitle());
098        Date lastValidationDate = course.getLastValidationDate();
099        if (lastValidationDate != null)
100        {
101            XMLUtils.createElement(contentHandler, "lastValidation", DateUtils.dateToString(lastValidationDate));
102        }
103        Locale locale = new Locale(args.currentPage().getSitemapName());
104        saxContent(course, "index", locale, contentHandler, logger);
105    }
106    
107    private void _saxCoursePages(ContentHandler contentHandler, Course course) throws SAXException
108    {
109        List<List<ProgramItem>> ancestorPaths = _courseReturnable._odfHelper.getPathOfAncestors(course);
110        for (List<ProgramItem> ancestorPath : ancestorPaths)
111        {
112            if (ancestorPath.get(0) instanceof Program) // ignore paths that is not part of a Program
113            {
114                // Filter on program items that is part of ODF pages
115                List<ProgramItem> filteredAncestor = ancestorPath.stream()
116                        .filter(p -> p instanceof AbstractProgram || p instanceof Course)
117                        .collect(Collectors.toList());
118                
119                List<String> courseUri = filteredAncestor.stream()
120                        .map(p -> p.getId())
121                        .collect(Collectors.toList());
122                Collections.reverse(courseUri);
123                String uri = String.join(";", courseUri);
124                
125                XMLUtils.startElement(contentHandler, "coursePage");
126                XMLUtils.createElement(contentHandler, "uri", uri);
127                
128                String resolvedUri = _courseReturnable._odfURIResolver.resolve(uri, false, false, false);
129                XMLUtils.createElement(contentHandler, "resolvedUri", resolvedUri);
130                
131                // Sax course path with title
132                _saxCoursePath(contentHandler, filteredAncestor);
133                
134                XMLUtils.endElement(contentHandler, "coursePage");
135            }
136        }
137    }
138    
139    private void _saxCoursePath(ContentHandler contentHandler, List<ProgramItem> coursePath) throws SAXException
140    {
141        XMLUtils.startElement(contentHandler, "path");
142        for (ProgramItem item : coursePath)
143        {
144            AttributesImpl attrs = new AttributesImpl();
145            attrs.addCDATAAttribute("id", ((Content) item).getId());
146            XMLUtils.createElement(contentHandler, "element", attrs, ((Content) item).getTitle());
147        }
148        XMLUtils.endElement(contentHandler, "path");
149    }
150}
151