content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.camel.component.mail;
  
  import java.io.ByteArrayOutputStream;
  
  import jakarta.mail.internet.MimeMultipart;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mail.Mailbox.MailboxUser;
  import org.apache.camel.component.mail.Mailbox.Protocol;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.test.junit5.CamelTestSupport;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.apache.camel.component.mail.MailConstants.MAIL_ALTERNATIVE_BODY;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class MimeMultipartAlternativeWithContentTypeTest extends CamelTestSupport {
      private static final MailboxUser sachin = Mailbox.getOrCreateUser("sachin", "secret");
      private Logger log = LoggerFactory.getLogger(getClass());
      private String alternativeBody = "hello world! (plain text)";
      private String htmlBody = "<html><body><h1>Hello</h1>World</body></html>";
  
      private void sendMultipartEmail() {
          Mailbox.clearAll();
  
          // create an exchange with a normal body and attachment to be produced as email
          MailEndpoint endpoint = context.getEndpoint(
                  sachin.uriPrefix(Protocol.smtp) + "&contentType=text/html; charset=UTF-8", MailEndpoint.class);
          endpoint.getConfiguration().setAlternativeBodyHeader(MailConstants.MAIL_ALTERNATIVE_BODY);
  
          // create the exchange with the mail message that is multipart with a file and a Hello World text/plain message.
          Exchange exchange = endpoint.createExchange();
          Message in = exchange.getIn();
          in.setBody(htmlBody);
          in.setHeader(MAIL_ALTERNATIVE_BODY, alternativeBody);
  
          // create a producer that can produce the exchange (= send the mail)
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedMessageCount(1);
          mock.message(0).header(MailConstants.MAIL_ALTERNATIVE_BODY).isNull();
  
          context.createProducerTemplate().send(endpoint, exchange);
      }
  
      private void verifyTheRecivedEmail(String expectString) throws Exception {
  
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.assertIsSatisfied();
  
          Exchange out = mock.assertExchangeReceived(0);
          ByteArrayOutputStream baos = new ByteArrayOutputStream(((MailMessage) out.getIn()).getMessage().getSize());
          ((MailMessage) out.getIn()).getMessage().writeTo(baos);
          String dumpedMessage = baos.toString();
          assertTrue(dumpedMessage.indexOf(expectString) > 0, "There should have the " + expectString);
          log.trace("multipart alternative: \n{}", dumpedMessage);
  
          // plain text
          assertEquals(alternativeBody, out.getIn().getBody(String.class));
  
          assertEquals(2, out.getIn().getBody(MimeMultipart.class).getCount(), "multipart body should have 2 parts");
      }
  
      @Test
      public void testMultipartEmailContentType() throws Exception {
          sendMultipartEmail();
          verifyTheRecivedEmail("Content-Type: text/plain; charset=UTF-8");
          verifyTheRecivedEmail("Content-Type: text/html; charset=UTF-8");
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  from(sachin.uriPrefix(Protocol.imap)
                       + "&initialDelay=100&delay=100&closeFolder=false&contentType=text/html; charset=UTF-8")
                          .to("mock:result");
              }
          };
      }
  }
  