org.eclipse.osbp.utils.email/src/org/eclipse/osbp/utils/email/common/Email.java

/**
 *                                                                            
 *  Copyright (c) 2019 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  All rights reserved. This program and the accompanying materials           
 *  are made available under the terms of the Eclipse Public License 2.0        
 *  which accompanies this distribution, and is available at                  
 *  https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 *  SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 */
package org.eclipse.osbp.utils.email.common;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;

import org.apache.commons.mail.DefaultAuthenticator;
import org.apache.commons.mail.MultiPartEmail;
import org.eclipse.osbp.preferences.ProductConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Email {

	private static Logger log = LoggerFactory.getLogger(Email.class);

	private MultiPartEmail mail;
	private List<String> toAddresses;
	private String from;
   

	public Email() {

		log.debug("Instantiate Email");
		mail = new MultiPartEmail();
		mail.setDebug(log.isDebugEnabled());
		
		mail.setHostName(ProductConfiguration.getEmailServerIp());

		if (ProductConfiguration.isEmailUseSslOnConnect()) {
			Integer port = ProductConfiguration.getEmailSmtpPort();
			mail.setSslSmtpPort(port.toString());
			mail.setSSLOnConnect(true);
		} else {
			mail.setSmtpPort(ProductConfiguration.getEmailSmtpPort());
			mail.setSSLOnConnect(false);
		}

		if (!ProductConfiguration.getAdminEmailUsername().isEmpty()) {
			mail.setAuthenticator(new DefaultAuthenticator(ProductConfiguration.getAdminEmailUsername(),
					ProductConfiguration.getAdminEmailPassword()));
		}

		String charset = "utf-8";
		mail.setCharset(charset);

		setFrom(ProductConfiguration.getAdminEmail());
		toAddresses = new ArrayList<>();

	}

	public void setFrom(String from) {
		// Set From: header field of the header.
		try {
			if (!from.isEmpty()) {
				log.debug("set From: {}", from);
				mail.setFrom(from);
				this.from = from;
			}
		} catch (Exception e) {
			log.error("set From: {}", e.getMessage());
		}
	}

	public String getFrom() {
		
		return from; 
		
	}
	
	
	public void setTo(String to) {
		try {
			if (!to.isEmpty() && !(toAddresses.contains(to))) {
				log.debug("set To: {}", to);
				toAddresses.add(to);
				mail.addTo(to);
			} else {
				log.debug("skip To: {}", to);
			}
		} catch (Exception e) {
			log.error("set To: {}", e.getMessage());
		}
	}

	public void setCc(String to) {
		try {
			if (!to.isEmpty() && !(toAddresses.contains(to))) {
				log.debug("set CC: {}", to);
				toAddresses.add(to);
				mail.addCc(to);
			} else {
				log.debug("skip CC: {}", to);
			}
		} catch (Exception e) {
			log.error("set CC: {}", e.getMessage());
		}
	}

	public void setBcc(String to) {
		try {
			if (!to.isEmpty() && !(toAddresses.contains(to))) {
				log.debug("set BCC: {}", to);
				toAddresses.add(to);
				mail.addBcc(to);
			} else {
				log.debug("skip BCC: {}", to);
			}
		} catch (Exception e) {
			log.error("set BCC: {}", e.getMessage());
		}
	}

	public void setSubject(String subject) {
		try {
			log.debug("set Subject: {}", subject);
			mail.setSubject(subject);
		} catch (Exception e) {
			log.error("set Subject: {}", e.getMessage());
		}
	}

	public void setBody(String body) {
		try {
			log.debug("set Body: {}", body);
			
			MimeMultipart multiPart = new MimeMultipart("alternative");

			MimeBodyPart textPart = new MimeBodyPart();
			String text=body.replaceAll("</*b>", "").replaceAll("</div>", "\n ").replaceAll("<br>", "\n ").replaceAll("</*t[r|h|d]>", "").replaceAll("</*table>", "");
			text=text.replaceAll("(?s)<[^>]*>(\\s*<[^>]*>)*", "");
			textPart.setText(text, "utf-8");
			textPart.setHeader("Content-Transfer-Encoding", "base64");

			MimeBodyPart htmlPart = new MimeBodyPart();
			htmlPart.setContent(body, "text/html; charset=utf-8");
			htmlPart.setHeader("Content-Transfer-Encoding", "base64");

			multiPart.addBodyPart(textPart); // <-- first
			multiPart.addBodyPart(htmlPart); // <-- second
			mail.addPart(multiPart);
		} catch (Exception e) {
			log.error("set Body: {}", e.getMessage());
		}
	}
	
	
	public void setHighPriority(boolean b) {
		try {
			if (b) {
				log.debug("set Highprio ");
				mail.addHeader("X-Priority","1");
				mail.addHeader("X-MSMail-Priority","High");
				mail.addHeader("Importance","High");
			}
		} catch (Exception e) {
			log.error("set Highprio: {}", e.getMessage());
		}

		
	}
	
	public void send() {
		try {
			// Send message
			log.debug("send mail ...");
			mail.setSentDate(new Date());
			mail.send();
		} catch (Exception e) {
			log.error("Send mail: {}", e.getMessage());
		}

	}
}