org.apache.james.jmap.mailet.VacationReply Maven / Gradle / Ivy
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package org.apache.james.jmap.mailet;
import java.util.List;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.apache.james.core.MailAddress;
import org.apache.james.jmap.api.vacation.Vacation;
import org.apache.james.jmap.utils.MimeMessageBodyGenerator;
import org.apache.james.util.OptionalUtils;
import org.apache.mailet.Mail;
import org.apache.mailet.base.AutomaticallySentMailDetector;
import com.github.fge.lambdas.Throwing;
import com.google.common.base.Preconditions;
public class VacationReply {
public static final String FROM_HEADER = "from";
public static final String TO_HEADER = "to";
public static Builder builder(Mail originalMail) {
return new Builder(originalMail);
}
public static class Builder {
public static final boolean NOT_REPLY_TO_ALL = false;
private final Mail originalMail;
private MailAddress mailRecipient;
private Vacation vacation;
private Builder(Mail originalMail) {
Preconditions.checkNotNull(originalMail, "Origin mail shall not be null");
this.originalMail = originalMail;
}
public Builder receivedMailRecipient(MailAddress mailRecipient) {
Preconditions.checkNotNull(mailRecipient);
this.mailRecipient = mailRecipient;
return this;
}
public Builder vacation(Vacation vacation) {
this.vacation = vacation;
return this;
}
public VacationReply build(MimeMessageBodyGenerator mimeMessageBodyGenerator) throws MessagingException {
Preconditions.checkState(mailRecipient != null, "Original recipient address should not be null");
Preconditions.checkState(originalMail.hasSender(), "Original sender address should not be null");
return new VacationReply(mailRecipient, OptionalUtils.toList(originalMail.getMaybeSender().asOptional()), generateMimeMessage(mimeMessageBodyGenerator));
}
private MimeMessage generateMimeMessage(MimeMessageBodyGenerator mimeMessageBodyGenerator) throws MessagingException {
MimeMessage reply = (MimeMessage) originalMail.getMessage().reply(NOT_REPLY_TO_ALL);
vacation.getSubject().ifPresent(Throwing.consumer(subjectString -> reply.setHeader("subject", subjectString)));
reply.setHeader(FROM_HEADER, mailRecipient.toString());
reply.setHeader(TO_HEADER, originalMail.getMaybeSender().get().asString());
reply.setHeader(AutomaticallySentMailDetector.AUTO_SUBMITTED_HEADER, AutomaticallySentMailDetector.AUTO_REPLIED_VALUE);
return mimeMessageBodyGenerator.from(reply, vacation.getTextBody(), vacation.getHtmlBody());
}
}
private final MailAddress sender;
private final List recipients;
private final MimeMessage mimeMessage;
private VacationReply(MailAddress sender, List recipients, MimeMessage mimeMessage) {
this.sender = sender;
this.recipients = recipients;
this.mimeMessage = mimeMessage;
}
public MailAddress getSender() {
return sender;
}
public List getRecipients() {
return recipients;
}
public MimeMessage getMimeMessage() {
return mimeMessage;
}
}