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.util.Map;
  
  import jakarta.activation.DataHandler;
  import jakarta.activation.FileDataSource;
  
  import org.apache.camel.Endpoint;
  import org.apache.camel.Exchange;
  import org.apache.camel.Producer;
  import org.apache.camel.attachment.AttachmentMessage;
  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 static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * Unit test for Camel attachments and Mail attachments.
   */
  public class MailContentTypeResolverTest extends CamelTestSupport {
      private static final MailboxUser james = Mailbox.getOrCreateUser("james", "secret");
  
      @Test
      public void testCustomContentTypeResolver() throws Exception {
          // clear mailbox
          Mailbox.clearAll();
  
          // create an exchange with a normal body and attachment to be produced as email
          Endpoint endpoint = context.getEndpoint(james.uriPrefix(Protocol.smtp));
  
          // create the exchange with the mail message that is multipart with a file and a Hello World text/plain message.
          Exchange exchange = endpoint.createExchange();
          AttachmentMessage in = exchange.getIn(AttachmentMessage.class);
          in.setBody("Hello World");
          in.addAttachment("logo.jpeg", new DataHandler(new FileDataSource("src/test/data/logo.jpeg")));
  
          // create a producer that can produce the exchange (= send the mail)
          Producer producer = endpoint.createProducer();
          // start the producer
          producer.start();
          // and let it go (processes the exchange by sending the email)
          producer.process(exchange);
  
          MockEndpoint mock = getMockEndpoint("mock:result");
          mock.expectedMessageCount(1);
          mock.assertIsSatisfied();
          Exchange out = mock.assertExchangeReceived(0);
  
          // plain text
          assertEquals("Hello World", out.getIn().getBody(String.class));
  
          // attachment
          Map<String, DataHandler> attachments = out.getIn(AttachmentMessage.class).getAttachments();
          assertNotNull(attachments, "Should have attachments");
          assertEquals(1, attachments.size());
  
          DataHandler handler = out.getIn(AttachmentMessage.class).getAttachment("logo.jpeg");
          assertNotNull(handler, "The logo should be there");
  
          // as we use a custom content type resolver the content type should then be fixed and correct
          // content type should match
          boolean match1 = "image/jpeg; name=logo.jpeg".equals(handler.getContentType());
          boolean match2 = "application/octet-stream; name=logo.jpeg".equals(handler.getContentType());
          assertTrue(match1 || match2, "Should match 1 or 2");
  
          producer.stop();
      }
  
      @Override
      protected RouteBuilder createRouteBuilder() {
          return new RouteBuilder() {
              public void configure() {
                  MailComponent mail = getContext().getComponent("smtp", MailComponent.class);
                  mail.setContentTypeResolver(new ContentTypeResolver() {
                      public String resolveContentType(String fileName) {
                          return "image/jpeg";
                      }
                  });
  
                  from(james.uriPrefix(Protocol.pop3) + "&initialDelay=100&delay=100").to("mock:result");
              }
          };
      }
  }
  