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package org.apache.james.jmap.draft.send;

import static java.nio.charset.StandardCharsets.UTF_8;
import static org.assertj.core.api.Assertions.assertThat;

import java.nio.charset.StandardCharsets;

import org.apache.james.mailbox.model.TestMessageId;
import org.apache.james.queue.api.MailQueue;
import org.apache.james.queue.api.MailQueue.MailQueueItem;
import org.apache.james.queue.api.MailQueueFactory;
import org.apache.james.queue.api.RawMailQueueItemDecoratorFactory;
import org.apache.james.queue.memory.MemoryMailQueueFactory;
import org.apache.james.util.MimeMessageUtil;
import org.apache.mailet.Attribute;
import org.apache.mailet.AttributeValue;
import org.apache.mailet.base.test.FakeMail;
import org.junit.Before;
import org.junit.Test;

import reactor.core.publisher.Flux;

public class MailSpoolTest {
    private static final String USERNAME = "user";
    private static final TestMessageId MESSAGE_ID = TestMessageId.of(1);
    private static final String NAME = "Name";

    private MailSpool mailSpool;
    private MailQueue myQueue;

    @Before
    public void setup() {
        MemoryMailQueueFactory mailQueueFactory = new MemoryMailQueueFactory(new RawMailQueueItemDecoratorFactory());
        myQueue = mailQueueFactory.createQueue(MailQueueFactory.SPOOL);

        mailSpool = new MailSpool(mailQueueFactory);
        mailSpool.start();
    }

    @Test
    public void sendShouldEnQueueTheMail() throws Exception {
        FakeMail mail = FakeMail.builder()
            .name(NAME)
            .mimeMessage(MimeMessageUtil.mimeMessageFromBytes("header: value\r\n".getBytes(UTF_8)))
            .build();

        mailSpool.send(mail, new MailMetadata(MESSAGE_ID, USERNAME));

        MailQueueItem actual = Flux.from(myQueue.deQueue()).blockFirst();
        assertThat(actual.getMail().getName()).isEqualTo(NAME);
    }

    @Test
    public void sendShouldPositionJMAPRelatedMetadata() throws Exception {
        FakeMail mail = FakeMail.builder()
            .name(NAME)
            .mimeMessage(MimeMessageUtil.mimeMessageFromBytes("header: value\r\n".getBytes(UTF_8)))
            .build();

        mailSpool.send(mail, new MailMetadata(MESSAGE_ID, USERNAME));

        MailQueueItem actual = Flux.from(myQueue.deQueue()).blockFirst();
        assertThat(actual.getMail().getAttribute(MailMetadata.MAIL_METADATA_USERNAME_ATTRIBUTE))
            .contains(new Attribute(MailMetadata.MAIL_METADATA_USERNAME_ATTRIBUTE, AttributeValue.of(USERNAME)));
        assertThat(actual.getMail().getAttribute(MailMetadata.MAIL_METADATA_MESSAGE_ID_ATTRIBUTE))
            .contains(new Attribute(MailMetadata.MAIL_METADATA_MESSAGE_ID_ATTRIBUTE, AttributeValue.of(MESSAGE_ID.serialize())));
    }

}
