/**
    * Copyright 2009-2013 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.codehaus.mojo.properties;
  
  import java.util.List;
  import java.util.Properties;
  
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.project.MavenProject;
  import org.jasypt.util.text.TextEncryptor;
  import org.kuali.common.util.EncUtils;
  import org.kuali.common.util.PropertyUtils;
  
  /**
   * Inspect project and system properties for any keys ending with <code>endsWith</code>. Any matching properties are assumed to be encrypted. They are decrypted and stored as
   * project properties minus the <code>endsWith</code> suffix. For example, the value for the property "dba.password.encrypted" will be decrypted and stored as "dba.password"
   * 
   * @goal decryptall
   */
  public class DecryptAllPropertiesMojo extends AbstractMojo {
  
  	/**
  	 * @parameter default-value="${project}"
  	 * @required
  	 * @readonly
  	 */
  	private MavenProject project;
  
  	/**
  	 * The pattern for matching properties in need of decryption
  	 * 
  	 * @parameter expression="${properties.endsWith}" default-value=".encrypted"
  	 * @required
  	 */
  	private String endsWith;
  
  	/**
  	 * The password for decrypting property values. This same password must have been used to encrypt them.
  	 * 
  	 * @parameter expression="${properties.password}"
  	 * @required
  	 */
  	private String password;
  
  	@Override
  	public void execute() throws MojoExecutionException {
  		TextEncryptor encryptor = EncUtils.getTextEncryptor(password);
  		Properties props = PropertyUtils.getGlobalProperties(project.getProperties());
  		List<String> keys = PropertyUtils.getEndsWithKeys(props, endsWith);
  		for (String key : keys) {
  			String value = props.getProperty(key);
  			String decryptedValue = getDecryptedValue(encryptor, value);
  			int length = endsWith.length();
  			String newKey = key.substring(0, key.length() - length);
  			project.getProperties().setProperty(newKey, decryptedValue);
  		}
  	}
  
  	protected String getDecryptedValue(TextEncryptor encryptor, String value) {
  		if (PropertyUtils.isEncryptedPropertyValue(value)) {
  			return PropertyUtils.decryptPropertyValue(encryptor, value);
  		} else {
  			return encryptor.decrypt(value);
  		}
  	}
  
  	public MavenProject getProject() {
  		return project;
  	}
  
  	public void setProject(MavenProject project) {
  		this.project = project;
  	}
  
  	public String getEndsWith() {
  		return endsWith;
  	}
  
  	public void setEndsWith(String endsWith) {
  		this.endsWith = endsWith;
  	}
  
  	public String getPassword() {
  		return password;
  	}
 
 	public void setPassword(String password) {
 		this.password = password;
 	}
 }