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 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.transport.mailets;

import org.apache.james.test.mock.javaxmail.MockMimeMessage;
import org.apache.james.test.mock.mailet.MockMail;
import org.apache.james.test.mock.mailet.MockMailContext;
import org.apache.james.test.mock.mailet.MockMailetConfig;
import org.apache.mailet.Mail;
import org.apache.mailet.MailAddress;
import org.apache.mailet.Mailet;

import javax.mail.MessagingException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.ParseException;
import javax.mail.internet.MimeMessage.RecipientType;

import java.io.UnsupportedEncodingException;
import java.util.Arrays;

import junit.framework.TestCase;

public class SetMimeHeaderTest extends TestCase {

    private MimeMessage mockedMimeMessage;

    private Mail mockedMail;

    private Mailet mailet;

    private final String HEADER_NAME = "JUNIT";

    private final String HEADER_VALUE = "test-value";

    private String headerName = "defaultHeaderName";

    private String headerValue = "defaultHeaderValue";

    public SetMimeHeaderTest(String arg0) throws UnsupportedEncodingException {
        super(arg0);
    }

    private void setHeaderName(String headerName) {
        this.headerName = headerName;
    }

    private void setHeaderValue(String headerValue) {
        this.headerValue = headerValue;
    }

    private void setupMockedMimeMessage() throws MessagingException {
        String sender = "test@james.apache.org";
        String rcpt = "test2@james.apache.org";

        mockedMimeMessage = new MockMimeMessage();
        mockedMimeMessage.setFrom(new InternetAddress(sender));
        mockedMimeMessage.setRecipients(RecipientType.TO, rcpt);
        mockedMimeMessage.setHeader(headerName, headerValue);
        mockedMimeMessage.setSubject("testmail");
        mockedMimeMessage.setText("testtext");
        mockedMimeMessage.saveChanges();

    }

    private void setupMockedMail(MimeMessage m) throws ParseException {
        mockedMail = new MockMail();
        mockedMail.setMessage(m);
        mockedMail.setRecipients(Arrays.asList(new MailAddress[] {
                new MailAddress("test@james.apache.org"), new MailAddress("test2@james.apache.org") }));

    }

    private void setupMailet() throws MessagingException {
        setupMockedMimeMessage();
        mailet = new SetMimeHeader();
        MockMailetConfig mci = new MockMailetConfig("Test",
                new MockMailContext());
        mci.setProperty("name", HEADER_NAME);
        mci.setProperty("value", HEADER_VALUE);

        mailet.init(mci);
    }

    // test if the Header was add
    public void testHeaderIsPresent() throws MessagingException {
        setupMockedMimeMessage();
        setupMockedMail(mockedMimeMessage);
        setupMailet();

        mailet.service(mockedMail);

        assertEquals(HEADER_VALUE, mockedMail.getMessage().getHeader(
                HEADER_NAME)[0]);

    }

    // test if the Header was replaced
    public void testHeaderIsReplaced() throws MessagingException {
        setHeaderName(HEADER_NAME);
        setHeaderValue(headerValue);

        setupMockedMimeMessage();
        setupMockedMail(mockedMimeMessage);
        setupMailet();

        mailet.service(mockedMail);

        assertEquals(HEADER_VALUE, mockedMail.getMessage().getHeader(
                HEADER_NAME)[0]);

    }
}