/*
    * Copyright (C) 2010, Google Inc. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  
  package org.eclipse.jgit.transport;
  
  import java.util.Arrays;
  
  import org.eclipse.jgit.errors.UnsupportedCredentialItem;
  
  /**
   * Simple {@link org.eclipse.jgit.transport.CredentialsProvider} that always
   * uses the same information.
   */
  public class UsernamePasswordCredentialsProvider extends CredentialsProvider {
  	private String username;
  
  	private char[] password;
  
  	/**
  	 * Initialize the provider with a single username and password.
  	 *
  	 * @param username
  	 *            user name
  	 * @param password
  	 *            password
  	 */
  	public UsernamePasswordCredentialsProvider(String username, String password) {
  		this(username, password.toCharArray());
  	}
  
  	/**
  	 * Initialize the provider with a single username and password.
  	 *
  	 * @param username
  	 *            user name
  	 * @param password
  	 *            password
  	 */
  	public UsernamePasswordCredentialsProvider(String username, char[] password) {
  		this.username = username;
  		this.password = password;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public boolean isInteractive() {
  		return false;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public boolean supports(CredentialItem... items) {
  		for (CredentialItem i : items) {
  			if (i instanceof CredentialItem.Username)
  				continue;
  
  			else if (i instanceof CredentialItem.Password)
  				continue;
  
  			else
  				return false;
  		}
  		return true;
  	}
  
  	/** {@inheritDoc} */
  	@Override
  	public boolean get(URIish uri, CredentialItem... items)
  			throws UnsupportedCredentialItem {
  		for (CredentialItem i : items) {
  			if (i instanceof CredentialItem.Username) {
  				((CredentialItem.Username) i).setValue(username);
  				continue;
  			}
  			if (i instanceof CredentialItem.Password) {
  				((CredentialItem.Password) i).setValue(password);
  				continue;
  			}
  			if (i instanceof CredentialItem.StringType) {
  				if (i.getPromptText().equals("Password: ")) { //$NON-NLS-1$
  					((CredentialItem.StringType) i).setValue(new String(
  							password));
  					continue;
  				}
  			}
  			throw new UnsupportedCredentialItem(uri, i.getClass().getName()
  					+ ":" + i.getPromptText()); //$NON-NLS-1$
  		}
  		return true;
  	}
  
  	/**
 	 * Destroy the saved username and password..
 	 */
 	public void clear() {
 		username = null;
 
 		if (password != null) {
 			Arrays.fill(password, (char) 0);
 			password = null;
 		}
 	}
 }