001/*
002 *  Copyright 2018 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.core.ui.resources;
017
018import java.net.URI;
019import java.util.HashMap;
020import java.util.HashSet;
021import java.util.Map;
022import java.util.Set;
023
024import org.apache.avalon.framework.service.ServiceException;
025import org.apache.avalon.framework.service.ServiceManager;
026import org.apache.avalon.framework.service.Serviceable;
027import org.apache.excalibur.source.Source;
028import org.apache.excalibur.source.SourceResolver;
029
030import org.ametys.core.resources.ResourceReader;
031import org.ametys.plugins.core.ui.minimize.HashCache.UriData;
032import org.ametys.plugins.core.ui.util.RequestAttributesHelper;
033
034/**
035 * Default resource dependencies listing for unsupported resource. Only returns self as a dependency
036 */
037public class DefaultResourceDependenciesList implements ResourceDependenciesList, Serviceable
038{
039
040    /** RequestAttributesHelper */
041    protected RequestAttributesHelper _requestAttributesHelper;
042    
043    private SourceResolver _sourceResolver;
044    
045    public void service(ServiceManager manager) throws ServiceException
046    {
047        _sourceResolver = (SourceResolver) manager.lookup(SourceResolver.ROLE);
048        _requestAttributesHelper = (RequestAttributesHelper) manager.lookup(RequestAttributesHelper.ROLE);
049    }
050    
051    public boolean isSupported(String uri)
052    {
053        return true;
054    }
055
056    public int getPriority()
057    {
058        return 0;
059    }
060
061    public Set<UriData> getDependenciesList(String uri, Map<String, String> data)
062    {
063        Map<String, Object> resolveParameters = new HashMap<>();
064        Source fileSource = _getFileSource(uri, resolveParameters);
065        
066        long fileLastModified = resolveParameters.get(ResourceReader.LAST_MODIFIED) != null ? (long) resolveParameters.get("lastModified") : fileSource.getLastModified();
067         
068        UriData fileInfos = new UriData(uri, true);
069        fileInfos.setLastModified(fileLastModified);
070        
071        Set<UriData> set = new HashSet<>();
072        set.add(fileInfos);
073        return set;
074    }
075    
076    private Source _getFileSource(String cssUri, Map<String, Object> resolveParameters)
077    {
078        try
079        {
080            String uriToResolve = cssUri;
081            URI uri = new URI(cssUri);
082            if (!uri.isAbsolute())
083            {
084                uriToResolve = "cocoon:/" + uriToResolve;
085            }
086            
087            _requestAttributesHelper.removeRequestAttributes();
088            
089            return _sourceResolver.resolveURI(uriToResolve, null, resolveParameters);
090        }
091        catch (Exception e)
092        {
093            throw new IllegalArgumentException("Unable to resolve the dependencies of specified uri", e);
094        }
095    }
096}