/**
    * Copyright 2009-2012 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.codehaus.mojo.properties;
  
  import java.util.Properties;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.project.MavenProject;
  import org.jasypt.util.text.BasicTextEncryptor;
  
  /**
   * Generate encrypted values for the specified system or project properties.
   *
   * @goal encrypt
   */
  public class EncryptPropertiesMojo extends AbstractMojo {
  
      /**
       * @parameter default-value="${project}"
       * @required
       * @readonly
       */
      private MavenProject project;
  
      /**
       * The list of properties containing values to encrypt
       *
       * @parameter
       * @required
       */
      private String[] properties;
  
      /**
       * The encrypted value for the properties are stored under their original property key with this text appended to
       * the end.
       *
       * eg "database.password" is stored as "database.password.encrypted"
       *
       * @parameter expression="${properties.suffix}" default-value="encrypted"
       * @required
       */
      private String suffix;
  
      /**
       * If true, the plain text values being encrypted are displayed to the console.
       *
       * @parameter expression="${properties.show}" default-value="false"
       * @required
       */
      private boolean show;
  
      /**
       * If true, the plugin will emit no logging information
       *
       * @parameter expression="${properties.quiet}" default-value="false"
       * @required
       */
      private boolean quiet;
  
      /**
       *
       * The password for encrypting property values. This same password can be used to to decrypt the encrypted values.
       *
       * @parameter expression="${properties.password}"
       * @required
       */
      private String password;
  
      @Override
      public void execute() throws MojoExecutionException {
          BasicTextEncryptor encryptor = new BasicTextEncryptor();
          encryptor.setPassword(password);
          Properties props = project.getProperties();
          for (String key : properties) {
              String value = getProperty(key);
              if (StringUtils.isBlank(value) && !quiet) {
                  getLog().info("Skipping " + key);
                  continue;
              }
              String newValue = encryptor.encrypt(value);
              String newKey = key + "." + suffix;
              props.setProperty(newKey, newValue);
              if (quiet) {
                  continue;
             }
             if (show) {
                 getLog().info("Setting " + newKey + "=" + newValue + " - " + value);
             } else {
                 getLog().info("Setting " + newKey + "=" + newValue);
             }
         }
     }
 
     protected String getProperty(String key) {
         String sys = System.getProperty(key);
         String proj = project.getProperties().getProperty(key);
         if (!StringUtils.isBlank(sys)) {
             return sys;
         } else {
             return proj;
         }
 
     }
 
     public String[] getProperties() {
         return properties;
     }
 
     public void setProperties(String[] properties) {
         this.properties = properties;
     }
 
     public String getSuffix() {
         return suffix;
     }
 
     public void setSuffix(String suffix) {
         this.suffix = suffix;
     }
 
     public boolean isShow() {
         return show;
     }
 
     public void setShow(boolean show) {
         this.show = show;
     }
 
     public boolean isQuiet() {
         return quiet;
     }
 
     public void setQuiet(boolean quiet) {
         this.quiet = quiet;
     }
 
     public String getPassword() {
         return password;
     }
 
     public void setPassword(String password) {
         this.password = password;
     }
 
     public MavenProject getProject() {
         return project;
     }
 }