server/protocols/jmap-draft/src/main/java/org/apache/james/jmap/mailet/SentByJmap.java

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package org.apache.james.jmap.mailet;

import java.util.Collection;

import org.apache.james.core.MailAddress;
import org.apache.james.jmap.send.MailMetadata;
import org.apache.mailet.AttributeUtils;
import org.apache.mailet.Mail;
import org.apache.mailet.base.GenericMatcher;

import com.google.common.collect.ImmutableList;

public class SentByJmap extends GenericMatcher {
    @Override
    public Collection<MailAddress> match(Mail mail) {
        return AttributeUtils.getAttributeValueFromMail(mail, MailMetadata.MAIL_METADATA_USERNAME_ATTRIBUTE)
            .map(ignored -> mail.getRecipients())
            .orElse(ImmutableList.of());
    }
}