/*
    * This file is part of dependency-check-maven.
    *
    * Licensed 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.
   *
   * Copyright (c) 2013 Jeremy Long. All Rights Reserved.
   */
  package org.owasp.dependencycheck.maven;
  
  import java.util.Locale;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.owasp.dependencycheck.data.nvdcve.DatabaseException;
  import org.owasp.dependencycheck.exception.ExceptionCollection;
  import org.owasp.dependencycheck.exception.ReportException;
  import org.owasp.dependencycheck.utils.Settings;
  
  /**
   * Maven Plugin that checks the project dependencies to see if they have any
   * known published vulnerabilities.
   *
   * @author Jeremy Long
   */
  @Mojo(
          name = "check",
          defaultPhase = LifecyclePhase.VERIFY,
          threadSafe = false,
          requiresDependencyResolution = ResolutionScope.COMPILE_PLUS_RUNTIME,
          requiresOnline = true
  )
  public class CheckMojo extends BaseDependencyCheckMojo {
  
      /**
       * Returns whether or not a the report can be generated.
       *
       * @return <code>true</code> if the report can be generated; otherwise
       * <code>false</code>
       */
      @Override
      public boolean canGenerateReport() {
          boolean isCapable = false;
          for (Artifact a : getProject().getArtifacts()) {
              if (!excludeFromScan(a.getScope())) {
                  isCapable = true;
                  break;
              }
          }
          return isCapable;
      }
  
      /**
       * Executes the dependency-check engine on the project's dependencies and
       * generates the report.
       *
       * @throws MojoExecutionException thrown if there is an exception executing
       * the goal
       * @throws MojoFailureException thrown if dependency-check is configured to
       * fail the build
       */
      @Override
      public void runCheck() throws MojoExecutionException, MojoFailureException {
          MavenEngine engine = null;
          try {
              engine = initializeEngine();
          } catch (DatabaseException ex) {
              if (getLog().isDebugEnabled()) {
                  getLog().debug("Database connection error", ex);
              }
              final String msg = "An exception occured connecting to the local database. Please see the log file for more details.";
              if (this.isFailOnError()) {
                  throw new MojoExecutionException(msg, ex);
              }
              getLog().error(msg);
          }
          if (engine != null) {
              ExceptionCollection exCol = scanArtifacts(getProject(), engine);
              if (engine.getDependencies().isEmpty()) {
                  getLog().info("No dependencies were identified that could be analyzed by dependency-check");
              } else {
                  try {
                      engine.analyzeDependencies();
                  } catch (ExceptionCollection ex) {
                      if (this.isFailOnError() && ex.isFatal()) {
                          throw new MojoExecutionException("One or more exceptions occured during analysis", ex);
                     }
                     exCol = ex;
                 }
                 if (exCol == null || !exCol.isFatal()) {
                     try {
                         writeReports(engine, getProject(), getCorrectOutputDirectory());
                     } catch (ReportException ex) {
                         if (this.isFailOnError()) {
                             if (exCol != null) {
                                 exCol.addException(ex);
                             } else {
                                 exCol = new ExceptionCollection("Unable to write the dependency-check report", ex);
                             }
                         }
                     }
                     writeDataFile(getProject(), null, engine.getDependencies());
                     showSummary(getProject(), engine.getDependencies());
                     checkForFailure(engine.getDependencies());
                     if (exCol != null && this.isFailOnError()) {
                         throw new MojoExecutionException("One or more exceptions occured during dependency-check analysis", exCol);
                     }
                 }
             }
             engine.cleanup();
         }
         Settings.cleanup();
     }
 
     /**
      * The name of the report in the site.
      */
     @SuppressWarnings("CanBeFinal")
     @Parameter(property = "name", defaultValue = "dependency-check", required = true)
     private String name = "dependency-check";
 
     /**
      * Returns the report name.
      *
      * @param locale the location
      * @return the report name
      */
     @Override
     public String getName(Locale locale) {
         return name;
     }
 
     /**
      * Gets the description of the Dependency-Check report to be displayed in
      * the Maven Generated Reports page.
      *
      * @param locale The Locale to get the description for
      * @return the description
      */
     @Override
     public String getDescription(Locale locale) {
         return "Generates a report providing details on any published vulnerabilities within project dependencies. "
                 + "This report is a best effort and may contain false positives and false negatives.";
     }
 
 }