package org.apache.maven.scm.plugin;
   
   /*
    * 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.
   */
  
  import java.util.Iterator;
  import java.util.List;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Execute;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.Parameter;
  
  /**
   * Validate scm connection string.
   *
   * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   */
  @Mojo( name = "validate", requiresProject = false )
  @Execute( phase = LifecyclePhase.VALIDATE )
  public class ValidateMojo
      extends AbstractScmMojo
  {
      /**
       * The scm connection url.
       */
      @Parameter( property = "scmConnection", defaultValue = "${project.scm.connection}" )
      private String scmConnection;
  
      /**
       * The scm connection url for developers.
       */
      @Parameter( property = "scmDeveloperConnection", defaultValue = "${project.scm.developerConnection}" )
      private String scmDeveloperConnection;
  
      /**
       * <em>(Subversion specific)</em> Enables checking that "URL" field returned by svn info matches what is specified
       * under the scm tag.
       */
      @Parameter( property = "scmCheckWorkingDirectoryUrl", defaultValue = "false" )
      // Actually unused in the code here. Present for doc purpose,
      // see org.apache.maven.scm.provider.svn.AbstractSvnScmProvider.CHECK_WORKING_DIRECTORY_URL
      private boolean scmCheckWorkingDirectoryUrl;
  
      /** {@inheritDoc} */
      public void execute()
          throws MojoExecutionException
      {
          super.execute();
  
          //check connectionUrl provided with cli
          try
          {
              validateConnection( getConnectionUrl(), "connectionUrl" );
          }
          catch ( NullPointerException e )
          {
              // nothing to do. connectionUrl isn't defined
          }
  
          //check scm connection
          if ( scmConnection != null )
          {
              validateConnection( scmConnection, "project.scm.connection" );
          }
  
          // Check scm developerConnection
          if ( scmDeveloperConnection != null )
          {
              validateConnection( scmDeveloperConnection, "project.scm.developerConnection" );
          }
  
      }
  
      private void validateConnection( String connectionString, String type )
          throws MojoExecutionException
      {
          List<String> messages = getScmManager().validateScmRepository( connectionString );
  
          if ( !messages.isEmpty() )
          {
             getLog().error( "Validation of scm url connection (" + type + ") failed :" );
 
             Iterator<String> iter = messages.iterator();
 
             while ( iter.hasNext() )
             {
                 getLog().error( iter.next().toString() );
             }
 
             getLog().error( "The invalid scm url connection: '" + connectionString + "'." );
 
             throw new MojoExecutionException( "Command failed. Bad Scm URL." );
         }
         else
         {
             getLog().info( type + " scm connection string is valid." );
         }
     }
 }