/*
    * 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.invoker;
  
  import javax.inject.Inject;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.invoker.model.BuildJob;
  import org.apache.maven.plugins.invoker.model.io.xpp3.BuildJobXpp3Reader;
  import org.apache.maven.reporting.AbstractMavenReport;
  import org.apache.maven.reporting.MavenReportException;
  import org.codehaus.plexus.i18n.I18N;
  import org.codehaus.plexus.util.xml.XmlStreamReader;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  /**
   * Generate a report based on the results of the Maven invocations. <strong>Note:</strong> This mojo doesn't fork any
   * lifecycle, if you have a clean working copy, you have to use a command like
   * <code>mvn clean integration-test site</code> to ensure the build results are present when this goal is invoked.
   *
   * @author Olivier Lamy
   * @since 1.4
   */
  @Mojo(name = "report", threadSafe = true)
  public class InvokerReport extends AbstractMavenReport {
  
      /**
       * Base directory where all build reports have been written to.
       */
      @Parameter(defaultValue = "${project.build.directory}/invoker-reports", property = "invoker.reportsDirectory")
      private File reportsDirectory;
  
      /**
       * Internationalization component
       */
      protected final I18N i18n;
  
      @Inject
      public InvokerReport(I18N i18n) {
          this.i18n = i18n;
      }
  
      protected void executeReport(Locale locale) throws MavenReportException {
          File[] reportFiles = getReportFiles();
          BuildJobXpp3Reader buildJobReader = new BuildJobXpp3Reader();
          List<BuildJob> buildJobs = new ArrayList<>(reportFiles.length);
          for (File reportFile : reportFiles) {
              try (XmlStreamReader xmlReader = new XmlStreamReader(reportFile)) {
                  buildJobs.add(buildJobReader.read(xmlReader));
              } catch (XmlPullParserException e) {
                  throw new MavenReportException("Failed to parse report file: " + reportFile, e);
              } catch (IOException e) {
                  throw new MavenReportException("Failed to read report file: " + reportFile, e);
              }
          }
          InvokerReportRenderer r = new InvokerReportRenderer(getSink(), i18n, locale, getLog(), buildJobs);
          r.render();
      }
  
      /**
       * @param locale The locale
       * @param key The key to search for
       * @return The text appropriate for the locale.
       */
      private String getI18nString(Locale locale, String key) {
          return i18n.getString("invoker-report", locale, "report.invoker." + key);
      }
  
      /** {@inheritDoc} */
      public String getName(Locale locale) {
          return getI18nString(locale, "name");
      }
  
      /** {@inheritDoc} */
      public String getDescription(Locale locale) {
          return getI18nString(locale, "description");
     }
 
     public String getOutputName() {
         return "invoker";
     }
 
     private File[] getReportFiles() {
         return ReportUtils.getReportFiles(reportsDirectory);
     }
 
     @Override
     public boolean canGenerateReport() {
         return getReportFiles().length > 0;
     }
 }