/*
    * 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.scm.provider.git.jgit.command;
  
  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;
     }
 }