/*
    * 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.syncope.fit.core;
  
  import static org.awaitility.Awaitility.await;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import java.io.InputStream;
  import java.util.Properties;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicReference;
  import javax.mail.Flags;
  import javax.mail.Folder;
  import javax.mail.Message;
  import javax.mail.Session;
  import javax.mail.Store;
  import org.junit.jupiter.api.BeforeAll;
  
  public abstract class AbstractNotificationTaskITCase extends AbstractTaskITCase {
  
      private static final String POP3_HOST = "localhost";
  
      private static int POP3_PORT;
  
      @BeforeAll
      public static void conf() {
          Properties props = new Properties();
          try (InputStream propStream = AbstractNotificationTaskITCase.class.getResourceAsStream("/test.properties")) {
              props.load(propStream);
          } catch (Exception e) {
              LOG.error("Could not load /test.properties", e);
          }
  
          POP3_PORT = Integer.parseInt(props.getProperty("testmail.pop3port"));
          assertNotNull(POP3_PORT);
      }
  
      private static boolean pop3(final String sender, final String subject, final String mailAddress) throws Exception {
          boolean found = false;
          Store store = null;
          try {
              store = Session.getDefaultInstance(System.getProperties()).getStore("pop3");
              store.connect(POP3_HOST, POP3_PORT, mailAddress, mailAddress);
  
              Folder inbox = store.getFolder("INBOX");
              assertNotNull(inbox);
              inbox.open(Folder.READ_WRITE);
  
              Message[] messages = inbox.getMessages();
              for (Message message : messages) {
                  if (sender.equals(message.getFrom()[0].toString()) && subject.equals(message.getSubject())) {
                      found = true;
                      message.setFlag(Flags.Flag.DELETED, true);
                  }
              }
  
              inbox.close(true);
          } finally {
              if (store != null) {
                  store.close();
              }
          }
          return found;
      }
  
      protected static void verifyMail(
              final String sender,
              final String subject,
              final String mailAddress,
              final int maxWaitSeconds) throws Exception {
  
          AtomicReference<Boolean> read = new AtomicReference<>(false);
          await().atMost(maxWaitSeconds, TimeUnit.SECONDS).pollInterval(1, TimeUnit.SECONDS).until(() -> {
              try {
                  read.set(pop3(sender, subject, mailAddress));
                  return read.get();
              } catch (Exception e) {
                  return false;
              }
          });
      }
  }