package org.apache.maven.scm.provider.git.jgit.command;
   
   /*
    * 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.Arrays;
  
  import org.codehaus.plexus.components.interactivity.Prompter;
  import org.codehaus.plexus.components.interactivity.PrompterException;
  import org.eclipse.jgit.errors.UnsupportedCredentialItem;
  import org.eclipse.jgit.transport.CredentialItem;
  import org.eclipse.jgit.transport.CredentialsProvider;
  import org.eclipse.jgit.transport.URIish;
  
  /**
   * {@link CredentialsProvider} leveraging the {@link Prompter} component.
   *
   */
  public class PlexusInteractivityCredentialsProvider extends CredentialsProvider
  {
      private boolean interactive;
      private final Prompter prompter;
  
      public PlexusInteractivityCredentialsProvider( Prompter prompter )
      {
          this.interactive = true;
          this.prompter = prompter;
      }
  
      @Override
      public boolean get( URIish uri, CredentialItem... items )
      {
          for ( CredentialItem item : items )
          {
              try
              {
                  get( uri, item );
              }
              catch ( PrompterException e )
              {
                  throw new IllegalStateException( "Cannot prompt user", e );
              }
          }
          return true;
      }
  
      private void get( URIish uri, CredentialItem item ) throws PrompterException
      {
          if ( item instanceof CredentialItem.InformationalMessage )
          {
              // works even in non-interactive mode
              prompter.showMessage( item.getPromptText() );
          }
          else
          {
              if ( !interactive )
              {
                  throw new UnsupportedCredentialItem( uri,
                          "Cannot provide '" + item.getClass() + "' in non-interactive mode" );
              }
              if ( item instanceof CredentialItem.YesNoType )
              {
                  CredentialItem.YesNoType yesNoItem = ( CredentialItem.YesNoType ) item;
                  String value = prompter.prompt( item.getPromptText(), Arrays.asList( "yes", "no" ) );
                  yesNoItem.setValue( value.equals( "yes" ) );
              }
              else if ( item instanceof CredentialItem.Password )
              {
                  CredentialItem.Password passwordItem = ( CredentialItem.Password ) item;
                  String password = prompter.promptForPassword( passwordItem.getPromptText() );
                  passwordItem.setValue( password.toCharArray() );
              }
              else if ( item instanceof CredentialItem.Username )
              {
                  CredentialItem.Username usernameItem = ( CredentialItem.Username ) item;
                  String username = prompter.prompt( usernameItem.getPromptText() );
                  usernameItem.setValue( username );
              }
              else if ( item instanceof CredentialItem.StringType )
              {
                  CredentialItem.StringType stringItem = ( CredentialItem.StringType ) item;
                  String value = prompter.prompt( stringItem.getPromptText() );
                 stringItem.setValue( value );
             }
             else if ( item instanceof CredentialItem.CharArrayType )
             {
                 CredentialItem.CharArrayType charArrayItem = ( CredentialItem.CharArrayType ) item;
                 String value = prompter.prompt( charArrayItem.getPromptText() );
                 charArrayItem.setValue( value.toCharArray() );
             }
             else
             {
                 throw new UnsupportedCredentialItem( uri, "This provider does not support items of type '"
                                                      + item.getClass() + "'" );
             }
         }
     }
 
     public void setInteractive( boolean interactive )
     {
         this.interactive = interactive;
     }
 
     @Override
     public boolean isInteractive()
     {
         return interactive;
     }
 
     @Override
     public boolean supports( CredentialItem... items )
     {
         return true;
     }
 
 }