Subversion Repositories SmartDukaan

package in.shop2020.utils;

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.security.Security;

import java.util.ArrayList;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Properties;

import javax.activation.DataHandler;

import javax.activation.DataSource;

import javax.activation.FileDataSource;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.PasswordAuthentication;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.AddressException;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

public class EmailUtils {

	public static void main(String... args) throws IOException, MessagingException{

		System.out.println("Test Email Start");

		String[] sendTo = { "vikram.raghav@shop2020.in"};

		EmailUtils emailUtils = new EmailUtils();

		emailUtils.sendEmail(sendTo,"------DONT PANIC--------TEST EMAIL--------","MAIL Body","build@shop2020.in","/home/Mobiles-Tablets-FBA-Sale.xls","/home/Mobiles-Tablets-FBA-body.html");

		System.out.println("Test Email Sent");

	}

	/**	

	 * Utility method to send simple HTML email

	 * @param session

	 * @param toEmail

	 * @param subject

	 * @param body

	 */

	public void sendEmail(String recipients[], String subject, String body, String from, String filename,String htmlFileName) throws MessagingException {

		System.out.println("EmailUtils Email Start");

		try {

			BufferedReader bufferedReader = new BufferedReader(new FileReader(htmlFileName));

			StringBuffer htmlContent = new StringBuffer();

			String line = null;

			while((line =bufferedReader.readLine())!=null){

				htmlContent.append(line).append("\n");

			}

			Message msg = prepareMessage(recipients, subject, from);

			//Create the multi-part object to hold the text and attachment parts

			Multipart multipart = new MimeMultipart();

			MimeBodyPart htmlPart = new MimeBodyPart();

			htmlPart.setContent(htmlContent.toString(), "text/html; charset=utf-8");

			// create the message part

			MimeBodyPart messageBodyPart = new MimeBodyPart();

			//Part 1: Text message

			messageBodyPart.setText(body);

			multipart.addBodyPart(htmlPart);

			//Part 2: Attachment

			messageBodyPart = new MimeBodyPart();

			DataSource source = new FileDataSource(filename);

			messageBodyPart.setDataHandler(new DataHandler(source));

			String[] names = filename.split("/");

			messageBodyPart.setFileName(names[names.length - 1]);

			multipart.addBodyPart(messageBodyPart);

			// Put parts in message

			msg.setContent(multipart);

			Transport.send(msg);

		} catch (Exception e) {

			if (hasMultipleDomains(recipients)) {

				for (List<String> subReceipients : getReceipientsPerDomain(recipients).values()) {

					sendEmail(subReceipients.toArray(new String[0]), subject, body, from , filename,htmlFileName);

				}

				return;

			}

			throw new MessagingException(e.getMessage(), e);

		}

	}

	private Message prepareMessage(String[] recipients, String subject,

			final String from) throws AddressException,

			MessagingException {

		Properties props = new Properties();

		props.put("mail.smtp.host","localhost");

		Session session = Session.getDefaultInstance(props,null);

		Message msg = new MimeMessage(session);

		//Set the from address

		InternetAddress addressFrom = new InternetAddress(from);

		msg.setFrom(addressFrom);

		InternetAddress[] addressTo = new InternetAddress[recipients.length];

		for (int i = 0; i < recipients.length; i++) {

			addressTo[i] = new InternetAddress(recipients[i]);

		}

		msg.setRecipients(Message.RecipientType.TO, addressTo);

		//Setting the Subject

		msg.setSubject(subject);

		return msg;

	}

	private boolean hasMultipleDomains(String[] recipients) {

		String domain = extractDomainFromEmailAddress(recipients[0]);

		for (String recipient : recipients) {

			if (!domain.equals(extractDomainFromEmailAddress(recipient))) {

				return true;

			}

		}

		return false;

	}

	private String extractDomainFromEmailAddress(String recipient) {

		return recipient.split("@")[1];

	}

	private Map<String, List<String>> getReceipientsPerDomain(String[] recipients) {

		Map<String, List<String>> result = new HashMap<String, List<String>>();

		for (String recipient : recipients) {

			String domain = extractDomainFromEmailAddress(recipient);

			if (!result.containsKey(domain)) {

				result.put(domain, new ArrayList<String>());

			}

			result.get(domain).add(recipient);

		}

		return result;

	}

}