/*
    * 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.core.provisioning.java.job;
  
  import java.util.Map;
  import org.apache.syncope.core.provisioning.api.AuditManager;
  import org.apache.syncope.core.provisioning.api.event.AfterHandlingEvent;
  import org.apache.syncope.core.provisioning.api.job.JobManager;
  import org.apache.syncope.core.provisioning.api.job.JobNamer;
  import org.apache.syncope.core.provisioning.api.notification.NotificationManager;
  import org.apache.syncope.core.spring.ApplicationContextProvider;
  import org.apache.syncope.core.spring.security.AuthContextUtils;
  import org.apache.syncope.core.spring.security.SecureRandomUtils;
  import org.quartz.JobBuilder;
  import org.quartz.JobDataMap;
  import org.quartz.JobExecutionContext;
  import org.quartz.JobExecutionException;
  import org.quartz.Scheduler;
  import org.quartz.SchedulerException;
  import org.quartz.Trigger;
  import org.quartz.TriggerBuilder;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.support.AbstractBeanDefinition;
  import org.springframework.scheduling.quartz.SchedulerFactoryBean;
  
  /**
   * Quartz job for asynchronous handling of notification / audit events.
   * Instead of direct synchronous invocation - which occurs in the same transaction where the event is generated, the
   * execution of the scheduled code happens in a new transaction.
   */
  public class AfterHandlingJob extends AbstractInterruptableJob {
  
      private static final Logger LOG = LoggerFactory.getLogger(AfterHandlingJob.class);
  
      public static void schedule(final SchedulerFactoryBean scheduler, final Map<String, Object> jobMap) {
          @SuppressWarnings("unchecked")
          AfterHandlingJob jobInstance = (AfterHandlingJob) ApplicationContextProvider.getBeanFactory().
                  createBean(AfterHandlingJob.class, AbstractBeanDefinition.AUTOWIRE_BY_TYPE, false);
          String jobName = AfterHandlingJob.class.getSimpleName() + SecureRandomUtils.generateRandomUUID();
  
          jobMap.put(JobManager.DOMAIN_KEY, AuthContextUtils.getDomain());
  
          ApplicationContextProvider.getBeanFactory().registerSingleton(jobName, jobInstance);
  
          JobBuilder jobDetailBuilder = JobBuilder.newJob(AfterHandlingJob.class).
                  withIdentity(jobName, Scheduler.DEFAULT_GROUP).
                  usingJobData(new JobDataMap(jobMap));
  
          TriggerBuilder<Trigger> triggerBuilder = TriggerBuilder.newTrigger().
                  withIdentity(JobNamer.getTriggerName(jobName), Scheduler.DEFAULT_GROUP).
                  startNow();
  
          try {
              scheduler.getScheduler().scheduleJob(jobDetailBuilder.build(), triggerBuilder.build());
          } catch (SchedulerException e) {
              LOG.error("Could not schedule, aborting", e);
          }
      }
  
      @Autowired
      private NotificationManager notificationManager;
  
      @Autowired
      private AuditManager auditManager;
  
      @Override
      public void execute(final JobExecutionContext context) throws JobExecutionException {
          try {
              AuthContextUtils.callAsAdmin(context.getMergedJobDataMap().getString(JobManager.DOMAIN_KEY),
                      () -> {
                          notificationManager.createTasks(
                                  (AfterHandlingEvent) context.getMergedJobDataMap().get(AfterHandlingEvent.JOBMAP_KEY));
                          auditManager.audit(
                                  (AfterHandlingEvent) context.getMergedJobDataMap().get(AfterHandlingEvent.JOBMAP_KEY));
                          return null;
                      });
          } catch (RuntimeException e) {
              throw new JobExecutionException("While handling notification / audit events", e);
          } finally {
              ApplicationContextProvider.getBeanFactory().destroySingleton(context.getJobDetail().getKey().getName());
          }
     }
 }