/*
    * 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.apache.maven.plugins.pmd;
  
  import java.io.File;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.util.Locale;
  
  import org.apache.maven.plugin.LegacySupport;
  import org.apache.maven.plugin.testing.AbstractMojoTestCase;
  import org.apache.maven.plugin.testing.ArtifactStubFactory;
  import org.apache.maven.plugin.testing.stubs.MavenProjectStub;
  import org.apache.maven.project.DefaultProjectBuildingRequest;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.project.ProjectBuilder;
  import org.apache.maven.project.ProjectBuildingRequest;
  import org.eclipse.aether.DefaultRepositorySystemSession;
  import org.eclipse.aether.internal.impl.SimpleLocalRepositoryManagerFactory;
  import org.eclipse.aether.repository.LocalRepository;
  
  /**
   * @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>
   * @version $Id$
   * @since 2.5
   */
  public abstract class AbstractPmdReportTestCase extends AbstractMojoTestCase {
      private ArtifactStubFactory artifactStubFactory;
  
      /**
       * The current project to be test.
       */
      private MavenProject testMavenProject;
  
      @Override
      protected void setUp() throws Exception {
          super.setUp();
          CapturingPrintStream.init(true);
  
          artifactStubFactory = new DependencyArtifactStubFactory(getTestFile("target"), true, false);
          artifactStubFactory.getWorkingDir().mkdirs();
      }
  
      /**
       * Get the current Maven project
       *
       * @return the maven project
       */
      protected MavenProject getTestMavenProject() {
          return testMavenProject;
      }
  
      /**
       * Get the generated report as file in the test maven project.
       *
       * @param name the name of the report.
       * @return the generated report as file
       * @throws IOException if the return file doesnt exist
       */
      protected File getGeneratedReport(String name) throws IOException {
          String outputDirectory =
                  getBasedir() + "/target/test/unit/" + getTestMavenProject().getArtifactId();
  
          File report = new File(outputDirectory, name);
          if (!report.exists()) {
              throw new IOException("File not found. Attempted: " + report);
          }
  
          return report;
      }
  
      /**
       * Generate the report and return the generated file
       *
       * @param goal the mojo goal.
       * @param pluginXml the name of the xml file in "src/test/resources/plugin-configs/".
       * @return the generated HTML file
       * @throws Exception if any
       */
      protected File generateReport(String goal, String pluginXml) throws Exception {
          File pluginXmlFile = new File(getBasedir(), "src/test/resources/unit/" + pluginXml);
          AbstractPmdReport mojo = createReportMojo(goal, pluginXmlFile);
          return generateReport(mojo, pluginXmlFile);
     }
 
     protected AbstractPmdReport createReportMojo(String goal, File pluginXmlFile) throws Exception {
         AbstractPmdReport mojo = (AbstractPmdReport) lookupMojo(goal, pluginXmlFile);
         assertNotNull("Mojo not found.", mojo);
 
         LegacySupport legacySupport = lookup(LegacySupport.class);
         legacySupport.setSession(newMavenSession(new MavenProjectStub()));
         DefaultRepositorySystemSession repoSession =
                 (DefaultRepositorySystemSession) legacySupport.getRepositorySession();
         repoSession.setLocalRepositoryManager(new SimpleLocalRepositoryManagerFactory()
                 .newInstance(repoSession, new LocalRepository(artifactStubFactory.getWorkingDir())));
 
         setVariableValueToObject(mojo, "session", legacySupport.getSession());
         setVariableValueToObject(mojo, "remoteRepositories", mojo.getProject().getRemoteArtifactRepositories());
         return mojo;
     }
 
     protected File generateReport(AbstractPmdReport mojo, File pluginXmlFile) throws Exception {
         mojo.execute();
 
         ProjectBuilder builder = lookup(ProjectBuilder.class);
 
         ProjectBuildingRequest buildingRequest = new DefaultProjectBuildingRequest();
         buildingRequest.setRepositorySession(lookup(LegacySupport.class).getRepositorySession());
 
         testMavenProject = builder.build(pluginXmlFile, buildingRequest).getProject();
 
         File outputDir = mojo.getReportOutputDirectory();
         String filename = mojo.getOutputName() + ".html";
 
         return new File(outputDir, filename);
     }
 
     /**
      * Read the contents of the specified file object into a string
      */
     protected String readFile(File file) throws IOException {
         return new String(Files.readAllBytes(file.toPath()));
     }
 
     /**
      * Checks, whether the string <code>contained</code> is contained in
      * the given <code>text</code> ignoring case.
      *
      * @param text the string in which the search is executed
      * @param contains the string, the should be searched
      * @return <code>true</code> if the string is contained, otherwise <code>false</code>.
      */
     public static boolean lowerCaseContains(String text, String contains) {
         return text.toLowerCase(Locale.ROOT).contains(contains.toLowerCase(Locale.ROOT));
     }
 }