package org.apache.maven.archetype.ui.generation;
   
   /*
    * 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 org.apache.maven.archetype.ui.ArchetypeConfiguration;
  import org.codehaus.plexus.component.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  import org.codehaus.plexus.components.interactivity.Prompter;
  import org.codehaus.plexus.components.interactivity.PrompterException;
  import org.codehaus.plexus.logging.AbstractLogEnabled;
  
  import java.util.regex.Pattern;
  
  @Component( role = ArchetypeGenerationQueryer.class, hint = "default" )
  public class DefaultArchetypeGenerationQueryer
      extends AbstractLogEnabled
      implements ArchetypeGenerationQueryer
  {
      @Requirement
      private Prompter prompter;
  
      public boolean confirmConfiguration( ArchetypeConfiguration archetypeConfiguration )
          throws PrompterException
      {
          StringBuilder query = new StringBuilder( "Confirm properties configuration:\n" );
  
          for ( String property : archetypeConfiguration.getRequiredProperties() )
          {
              query.append( property + ": " + archetypeConfiguration.getProperty( property ) + "\n" );
          }
  
          String answer = prompter.prompt( query.toString(), "Y" );
  
          return "Y".equalsIgnoreCase( answer );
      }
  
      public String getPropertyValue( String requiredProperty, String defaultValue, Pattern validationRegex )
          throws PrompterException
      {
          StringBuilder queryBuilder = new StringBuilder();
          queryBuilder.append( "Define value for property '" );
          queryBuilder.append( requiredProperty );
          queryBuilder.append( '\'' );
  
          if ( validationRegex != null )
          {
              queryBuilder.append( " (should match expression '" );
              queryBuilder.append( validationRegex );
              queryBuilder.append( "')" );
          }
  
          String query = queryBuilder.toString();
          String answer;
          boolean validAnswer = false;
  
          do
          {
              if ( ( defaultValue != null ) && !defaultValue.equals( "null" ) )
              {
                  answer = prompter.prompt( query, defaultValue );
              }
              else
              {
                  answer = prompter.prompt( query );
              }
  
              if ( validationRegex == null || validationRegex.matcher( answer ).matches() )
              {
                  validAnswer = true;
              }
              else
              {
                  query = "Value does not match the expression, please try again";
              }
  
          }
          while ( !validAnswer );
  
          return answer;
      }
  
      public void setPrompter( Prompter prompter )
     {
         this.prompter = prompter;
     }
 }