/**
    * Copyright 2010-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.common.util.property.processor;
  
  import java.util.List;
  import java.util.Properties;
  
  import org.jasypt.util.text.TextEncryptor;
  import org.kuali.common.util.PropertyUtils;
  import org.springframework.util.Assert;
  
  public class DecryptProcessor implements PropertyProcessor {
  
  	TextEncryptor encryptor;
  
  	public DecryptProcessor() {
  		this(null);
  	}
  
  	public DecryptProcessor(TextEncryptor encryptor) {
  		super();
  		this.encryptor = encryptor;
  	}
  
  	@Override
  	public void process(Properties properties) {
  		Assert.notNull(encryptor, "encryptor is null");
  		List<String> keys = PropertyUtils.getSortedKeys(properties);
  		for (String key : keys) {
  			String encryptedValue = properties.getProperty(key);
  			String decryptedValue = encryptor.decrypt(encryptedValue);
  			properties.setProperty(key, decryptedValue);
  		}
  	}
  
  	public TextEncryptor getEncryptor() {
  		return encryptor;
  	}
  
  	public void setEncryptor(TextEncryptor encryptor) {
  		this.encryptor = encryptor;
  	}
  
  }