/*

  * Copyright 2005-2008 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.rice.kew.mail.service.impl;

 import java.util.Properties;

 import org.apache.log4j.Logger;

 import org.kuali.rice.core.config.ConfigContext;

 import org.kuali.rice.kew.exception.WorkflowRuntimeException;

 import org.kuali.rice.kew.mail.EmailBody;

 import org.kuali.rice.kew.mail.EmailFrom;

 import org.kuali.rice.kew.mail.EmailSubject;

 import org.kuali.rice.kew.mail.EmailTo;

 import org.kuali.rice.kew.mail.Mailer;

 import org.kuali.rice.kew.mail.service.EmailService;

 import org.springframework.beans.factory.InitializingBean;

 import org.kuali.rice.kew.mail.service.impl.EmailBcList;

 import org.kuali.rice.kew.mail.service.impl.EmailCcList;

 import org.kuali.rice.kew.mail.service.impl.EmailToList;

 public class DefaultEmailService implements EmailService, InitializingBean {

     private static final Logger LOG = Logger.getLogger(DefaultEmailService.class);

         public static final String USERNAME_PROPERTY = "mail.smtp.username";

         public static final String PASSWORD_PROPERTY = "mail.smtp.password";

         protected Mailer mailer;

         /**

          * This method is called by Spring on initialization.  

          */

         public void afterPropertiesSet() throws Exception {

                 if(getMailer() == null){

                         mailer = createMailer();

                 }

         }

         /**

          * Retrieves the Properties used to configure the Mailer.  The property names configured in the 

          * Workflow configuration should match those of Java Mail.

          * @return

          */

         private Properties getConfigProperties() {

                 return ConfigContext.getCurrentContextConfig().getProperties();

         }

         public void sendEmail(EmailFrom from, EmailTo to, EmailSubject subject, EmailBody body, boolean htmlMessage) {

         if (to.getToAddress() == null) {

             LOG.warn("No To address specified; refraining from sending mail");

             return;

         }

                 try {

                         getMailer().sendMessage(

                         from.getFromAddress(),

                         to.getToAddress(),

                         subject.getSubject(),

                         body.getBody(),

                         htmlMessage);

                 } catch (Exception e) {

                         throw new WorkflowRuntimeException(e);

                 }

         }

         public void sendEmail(EmailFrom from, EmailToList to, EmailSubject subject, EmailBody body, EmailCcList cc, EmailBcList bc, boolean htmlMessage) {

                 if(getMailer() == null){

                         try {

                                 mailer = createMailer();

                         } catch (Exception e) {

                                 LOG.error("Error initializing mailer for multi-recipient email.", e);

                         }

                 }

                 if (to.getToAddresses().isEmpty()) {

                         LOG.error("List of To addresses must contain at least one entry.");

                 } else {

                         try {

                                 getMailer().sendMessage(

                                                 from.getFromAddress(), 

                                                 to.getToAddressesAsAddressArray(), 

                                                 subject.getSubject(), 

                                                 body.getBody(), 

                                                 (cc == null ? null : cc.getToAddressesAsAddressArray()), 

                                                 (bc == null ? null : bc.getToAddressesAsAddressArray()), 

                                                 htmlMessage);

                         } catch (Exception e) {

                                 LOG.error("Error sending email to multiple recipients.", e);

                         }

                 }

         }

         /**

          * @return the mailer

          */

         public Mailer getMailer() {

                 return mailer;

         }

         /**

          * @param mailer the mailer to set

          * 

          * Note: If you want to test locally and not have a smtp server, you can, via spring,

          * inject the MockMailer. That class just prints the email via Log.info

          */

         public void setMailer(Mailer mailer) {

                 this.mailer = mailer;

         }

         protected Mailer createMailer(){

                 Mailer cMailer = null;

                 String username = ConfigContext.getCurrentContextConfig().getProperty(USERNAME_PROPERTY);

                 String password = ConfigContext.getCurrentContextConfig().getProperty(PASSWORD_PROPERTY);

                 if (username != null && password != null) {

                         cMailer = new Mailer(getConfigProperties(), username, password);

                         LOG.info("Rice Mailer being used. Username and Pass were found");

                 } else {

                         cMailer = new Mailer(getConfigProperties());

                         LOG.info("Rice Mailer being used. Username and Pass were not found");

                 }

                 return cMailer;

         }

 }