io._57blocks.email.DummyEmailServiceImpl Maven / Gradle / Ivy

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Email service based on spring-boot and provide an easy way to integrate spring-mail or aws ses.

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package io._57blocks.email;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.stream.Collectors;
import javax.mail.MessagingException;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class DummyEmailServiceImpl implements EmailService {

  private static final String HTML_EMAIL = "HTML";
  private static final String TEXT_EMAIL = "Text";

  @Override
  public void sendTextEmail(String fromEmail, String template, Locale locale,
      Map ctx, String... recipientEmails) throws MessagingException {
    sendHtmlEmailWithAttachments(fromEmail, template, locale, ctx, null, recipientEmails);
  }

  @Override
  public void sendTextEmailWithAttachments(String fromEmail, String template, Locale locale,
      Map ctx, Attachment[] attachments, String... recipientEmails)
      throws MessagingException {
    printLog(fromEmail, template, locale, ctx, HTML_EMAIL, extractAttachmentNames(attachments),
        recipientEmails);
  }

  @Override
  public void sendHtmlEmail(String fromEmail, String template, Locale locale,
      Map ctx, String... recipientEmails) throws MessagingException {
    sendHtmlEmailWithAttachments(fromEmail, template, locale, ctx, null, recipientEmails);
  }

  @Override
  public void sendHtmlEmailWithAttachments(String fromEmail, String template, Locale locale,
      Map ctx, Attachment[] attachments, String... recipientEmails)
      throws MessagingException {
    printLog(fromEmail, template, locale, ctx, TEXT_EMAIL, extractAttachmentNames(attachments),
        recipientEmails);
  }

  private String[] extractAttachmentNames(Attachment[] attachments) {
    List attachmentNames = new ArrayList<>();
    if (attachments != null) {
      attachmentNames = Arrays.asList(attachments).stream()
          .map(Attachment::getFilename)
          .collect(Collectors.toList());
    }
    return attachmentNames.toArray(new String[attachmentNames.size()]);
  }

  private void printLog(String fromEmail, String template, Locale locale,
      Map ctx, String emailType, String[] attachmentNames,
      String... recipientEmails) {

    log.warn("Currently email is not sent out due to application is using dummy EmailService. "
        + "If you want to send email out, please set 'io.57blocks.email.enabled=true'.");

    log.info("From: '{}' send {} email to: '{}', using template: '{}' with locale: '{}'", fromEmail,
        emailType,
        recipientEmails, template, locale);
    log.info("=====================");
    log.info("Variables: {}", ctx);
    log.info("Attachments: {}", attachmentNames);
    log.info("=====================");

  }
}