package com.mycompany.mavenproject4;

import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.PatternLayout;
import ch.qos.logback.classic.net.SMTPAppender;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.Layout;
import ch.qos.logback.core.status.OnConsoleStatusListener;
import com.icegreen.greenmail.util.GreenMail;
import com.icegreen.greenmail.util.GreenMailUtil;
import com.icegreen.greenmail.util.ServerSetup;
import javax.mail.Multipart;
import javax.mail.internet.MimeMessage;

public class App {

	private static final String DEFAULT_PATTERN = "%-4relative %mdc [%thread] %-5level %class - %msg%n";
	private LoggerContext loggerContext = new LoggerContext();
	private Logger logger = loggerContext.getLogger(this.getClass());
	private GreenMail greenMail;

	public static void main(String... args) throws Exception {

		App app = new App();
		app.test();
	}

	public void test() throws Exception {

		OnConsoleStatusListener.addNewInstanceToContext(loggerContext);

		startGreenMail();
		try {
			SMTPAppender smtpAppender = buildSMTPAppender();
			smtpAppender.start();

			logger.addAppender(smtpAppender);
			logger.error("Message1");
			logger.error("Message2");

			greenMail.waitForIncomingEmail(5000, 2);
			for (MimeMessage mimeMessage : greenMail.getReceivedMessages()) {

				String subject = mimeMessage.getSubject();

				Multipart multipart = (Multipart) mimeMessage.getContent();
				String body = GreenMailUtil.getBody(multipart.getBodyPart(0));

				System.out.println("subject=" + subject);
				System.out.println("body=" + body);
				System.out.println();
			}

		} finally {
			stopGreenMail();
		}
	}

	private void startGreenMail() throws InterruptedException {
		greenMail = new GreenMail(new ServerSetup(25, "localhost", ServerSetup.PROTOCOL_SMTP));
		greenMail.start();
		Thread.currentThread().sleep(50);
	}

	private void stopGreenMail() {
		greenMail.stop();
	}

	private SMTPAppender buildSMTPAppender() {
		SMTPAppender smtpAppender = new SMTPAppender();
		smtpAppender.setContext(loggerContext);
		smtpAppender.setSubject("%msg");
		smtpAppender.addTo("nospam@qos.ch");
		smtpAppender.setAsynchronousSending(true);
		smtpAppender.setLayout(buildPatternLayout());
		return smtpAppender;
	}

	private Layout<ILoggingEvent> buildPatternLayout() {
		PatternLayout layout = new PatternLayout();
		layout.setContext(loggerContext);
		layout.setPattern(DEFAULT_PATTERN);
		layout.start();
		return layout;
	}
}