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package com.juick.server;
import com.juick.Message;
import com.juick.User;
import com.juick.server.component.MessageEvent;
import com.juick.service.EmailService;
import com.juick.service.MessagesService;
import com.juick.service.SubscriptionService;
import com.juick.service.UserService;
import com.juick.util.MessageUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;
import javax.annotation.Nonnull;
import javax.inject.Inject;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import static com.juick.formatters.PlainTextFormatter.formatPost;
import static com.juick.formatters.PlainTextFormatter.formatUrl;
@Component
public class EmailManager implements ApplicationListener<MessageEvent> {
public static final String MSGID_PATTERN = "\\.|@|<";
private static final Logger logger = LoggerFactory.getLogger(EmailManager.class);
@Inject
private EmailService emailService;
@Inject
private MessagesService messagesService;
@Inject
private UserService userService;
@Override
public void onApplicationEvent(@Nonnull MessageEvent event) {
Message msg = event.getMessage();
List<User> subscribedUsers = event.getUsers();
if (msg.isService()) {
return;
}
if (MessageUtils.isPM(msg)) {
String subject = String.format("Private message from %s", msg.getUser().getName());
emailService.getEmails(msg.getTo().getUid(), true).forEach(email -> {
emailNotify(email, subject, msg);
});
} else if (MessageUtils.isReply(msg)) {
Message originalMessage = messagesService.getMessage(msg.getMid());
String subject = String.format("New reply to %s", originalMessage.getUser().getName());
subscribedUsers.stream()
.flatMap(user -> emailService.getEmails(user.getUid(), true).stream())
.forEach(email -> emailNotify(email, subject, msg));
} else {
String subject = String.format("New message from %s", msg.getUser().getName());
subscribedUsers
.forEach(user -> emailService.getEmails(user.getUid(), true)
.forEach(email -> emailNotify(email, subject, msg)));
}
}
private void emailNotify(String email, String subject, Message msg) {
Map<String, String> headers = new HashMap<>();
if (!MessageUtils.isPM(msg)) {
headers.put("Message-ID", String.format("<%d.%d@juick.com>", msg.getMid(), msg.getRid()));
}
if (MessageUtils.isReply(msg)) {
if (msg.getReplyto() > 0) {
Message replyto = messagesService.getReply(msg.getMid(), msg.getReplyto());
headers.put("In-Reply-To", String.format("<%d.%d@juick.com>", replyto.getMid(), replyto.getRid()));
} else {
Message original = messagesService.getMessage(msg.getMid());
headers.put("In-Reply-To", String.format("<%d.%d@juick.com>", original.getMid(), original.getRid()));
}
}
String plainText = String.format("%s\n\n--\nYou are receiving this because you are subscribed to this user " +
", discussion or tag. Reply to this email directly or view it on Juick: %s.",
formatPost(msg), formatUrl(msg));
String hash = userService.getHashByUID(userService.getUserByEmail(email).getUid());
String htmlText = String.format("%s<br /><br />--<br />You are receiving this because you are subscribed to this user" +
", discussion or tag. Reply to this email directly or <a href=\"%s\"><img src=\"https://api.juick.com/thread/mark_read/%d-%d.gif?hash=%s\" />view it</a> on Juick." +
"<br /><a href=\"https://juick.com/settings?hash=%s\">Configure or disable notifications</a>",
MessageUtils.formatHtml(msg), formatUrl(msg),
msg.getMid(), msg.getRid(), hash, hash);
sendEmail(email, subject, plainText, htmlText, headers);
}
public void sendEmail(String to, String subject, String textPart, String htmlPart, Map<String, String> messageHeaders) {
Properties prop = System.getProperties();
prop.put("mail.smtp.starttls.enable", "true");
Session session = Session.getDefaultInstance(prop);
try {
Transport transport = session.getTransport("smtp");
MimeMessage message = new MimeMessage(session) {
protected void updateMessageID() throws MessagingException {
for (Map.Entry<String, String> entry: messageHeaders.entrySet()) {
setHeader(entry.getKey(), entry.getValue());
}
}
};
message.setFrom(new InternetAddress("juick@juick.com"));
message.addRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(to));
message.setSubject(subject);
MimeBodyPart textBodyPart = new MimeBodyPart();
textBodyPart.setContent(textPart, "text/plain; charset=UTF-8");
Multipart multipart = new MimeMultipart("alternative");
multipart.addBodyPart(textBodyPart);
if (StringUtils.isNotBlank(htmlPart)) {
MimeBodyPart htmlBodyPart = new MimeBodyPart();
htmlBodyPart.setContent(htmlPart, "text/html; charset=UTF-8");
multipart.addBodyPart(htmlBodyPart);
}
message.setContent(multipart);
User emailUser = userService.getUserByEmail(to);
if (!emailUser.isAnonymous()) {
message.setHeader("List-Unsubscribe", String.format("https://juick.com/settings?hash=%s",
userService.getHashByUID(emailUser.getUid())));
}
message.saveChanges();
transport.connect();
transport.sendMessage(message, message.getAllRecipients());
} catch (MessagingException ex) {
logger.error("mail exception", ex);
}
}
}
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