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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.netbeans.modules.junit.ant;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.netbeans.api.extexecution.print.LineConvertors.FileLocator;
import org.netbeans.api.java.classpath.ClassPath;
import org.netbeans.api.java.platform.JavaPlatform;
import org.netbeans.api.java.project.JavaProjectConstants;
import org.netbeans.api.java.queries.SourceForBinaryQuery;
import org.netbeans.api.project.Project;
import org.netbeans.api.project.ProjectUtils;
import org.netbeans.api.project.SourceGroup;
import org.netbeans.api.project.Sources;
import org.netbeans.modules.gsf.testrunner.api.TestSession;
import org.netbeans.modules.java.testrunner.OutputUtils;
import org.netbeans.spi.java.classpath.ClassPathProvider;
import org.netbeans.spi.java.classpath.support.ClassPathSupport;
import org.netbeans.spi.project.support.ant.PropertyEvaluator;
import org.openide.filesystems.FileObject;

/**
 *
 * @author answer
 */
public class JUnitTestSession extends TestSession{
    private FileLocator projectFileLocator = null;

    public JUnitTestSession(String name, Project project, SessionType sessionType) {
        super(name, project, sessionType);
        projectFileLocator = new ProjectFileLocator(project);
    }

    @Override
    public FileLocator getFileLocator() {
        FileLocator locator = super.getFileLocator();
        if (locator == null){
            return projectFileLocator;
        }
        return locator;
    }

    class ProjectFileLocator implements FileLocator{
        private ClassPath classpath;

        ProjectFileLocator(Project project){
            this.classpath = getProjectClasspath(project);
        }

        public FileObject find(String filename) {
            return classpath.findResource(filename);
        }

        private ClassPath getProjectClasspath(Project p){
            ClassPath result = null;
            Set roots = new HashSet();
            Sources sources = ProjectUtils.getSources(p);
            if (sources != null){
                SourceGroup[] groups = sources.getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
                for (SourceGroup group: groups){
                    roots.add(group.getRootFolder());
                }
            }

            ClassPathProvider cpp = p.getLookup().lookup(ClassPathProvider.class);
            Set setCP = new HashSet();
            if (cpp != null){
                for(FileObject file: roots){
                    ClassPath path = cpp.findClassPath(file, ClassPath.COMPILE);
                    if(path != null) {
                        setCP.add(path);
                    }
                }
            }

            for(ClassPath cp: setCP){
                FileObject[] rootsCP = cp.getRoots();
                for(FileObject fo: rootsCP){
                    try{
                        FileObject[] aaa = SourceForBinaryQuery.findSourceRoots(fo.toURL()).getRoots();
                        roots.addAll(Arrays.asList(aaa));
                    }catch(Exception e){}
                }
            }

            String platformId = null;
            try {
                Method evalMethod = p.getClass().getDeclaredMethod("evaluator"); //NOI18N
                PropertyEvaluator evaluator = (PropertyEvaluator)evalMethod.invoke(p);
                if (evaluator != null){
                    platformId = evaluator.getProperty("platform.active");
                }
            } catch (Exception ex) {
            }

            JavaPlatform platform = OutputUtils.getActivePlatform(platformId); //NOI18N
            if (platform != null) {
                roots.addAll(Arrays.asList(platform.getSourceFolders().getRoots()));
            }

            result = ClassPathSupport.createClassPath(roots.toArray(new FileObject[roots.size()]));

            return result;
        }
    }
}