/*
    * Licensed to The Apereo Foundation under one or more contributor license
    * agreements. See the NOTICE file distributed with this work for additional
    * information regarding copyright ownership.
    *
    *
    * The Apereo Foundation licenses this file to you under the Educational
    * Community 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://opensource.org/licenses/ecl2.txt
   *
   * 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.opencastproject.scheduler.impl;
  
  import org.opencastproject.kernel.scanner.AbstractBufferScanner;
  import org.opencastproject.kernel.scanner.AbstractScanner;
  import org.opencastproject.scheduler.api.SchedulerException;
  import org.opencastproject.scheduler.api.SchedulerService;
  import org.opencastproject.security.api.Organization;
  import org.opencastproject.security.api.OrganizationDirectoryService;
  import org.opencastproject.security.api.SecurityService;
  import org.opencastproject.security.api.UnauthorizedException;
  import org.opencastproject.serviceregistry.api.ServiceRegistry;
  import org.opencastproject.util.NeedleEye;
  
  import org.osgi.service.cm.ManagedService;
  import org.osgi.service.component.ComponentContext;
  import org.osgi.service.component.annotations.Activate;
  import org.osgi.service.component.annotations.Component;
  import org.osgi.service.component.annotations.Deactivate;
  import org.osgi.service.component.annotations.Reference;
  import org.quartz.JobDetail;
  import org.quartz.JobExecutionContext;
  import org.quartz.Scheduler;
  import org.quartz.impl.StdSchedulerFactory;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Optional;
  
  @Component(
      immediate = true,
      service = ManagedService.class,
      property = {
          "service.description=Cleanup Finished Recordings from the Schedule Scanner"
      }
  )
  public class OldScheduledScanner extends AbstractBufferScanner implements ManagedService {
  
    /** The logging facility */
    private static final Logger logger = LoggerFactory.getLogger(OldScheduledScanner.class);
    public static final String SCANNER_NAME = "Cleanup Finished Scheduled Events Scanner";
    public static final String JOB_GROUP = "mh-scheduler-cleanup-job-group";
    public static final String JOB_NAME = "mh-scheduler-cleanup-job";
    public static final String TRIGGER_GROUP = "mh-scheduler-cleanup-trigger";
    public static final String TRIGGER_NAME = "mh-scheduler-cleanup-trigger";
  
    /** Reference to the scheduler service. */
    private SchedulerService service;
  
    public OldScheduledScanner() {
      try {
        quartz = new StdSchedulerFactory().getScheduler();
        quartz.start();
        // create and set the job. To actually run it call schedule(..)
        final JobDetail job = new JobDetail(getJobName(), getJobGroup(), Runner.class);
        job.setDurability(false);
        job.setVolatility(true);
        job.getJobDataMap().put(JOB_PARAM_PARENT, this);
        quartz.addJob(job, true);
      } catch (org.quartz.SchedulerException e) {
        throw new RuntimeException(e);
      }
    }
  
    @Activate
    @Override
    public void activate(ComponentContext cc) {
      super.activate(cc);
    }
  
    @Deactivate
    @Override
    public void deactivate() {
      super.deactivate();
    }
  
    /**
     * Method to set the service this REST endpoint uses
     *
    * @param service
    */
   @Reference
   public void setService(SchedulerService service) {
     this.service = service;
   }
 
   @Reference
   @Override
   public void bindServiceRegistry(ServiceRegistry serviceRegistry) {
     super.bindServiceRegistry(serviceRegistry);
   }
 
   @Reference
   @Override
   public void bindOrganizationDirectoryService(OrganizationDirectoryService organizationDirectoryService) {
     super.bindOrganizationDirectoryService(organizationDirectoryService);
   }
 
   @Reference
   @Override
   public void bindSecurityService(SecurityService securityService) {
     super.bindSecurityService(securityService);
   }
 
   @Override
   public void setQuartz(Scheduler quartz) {
     this.quartz = quartz;
   }
 
   /**
    * Method to unset the service this REST endpoint uses
    *
    * @param service
    */
   public void unsetService(SchedulerService service) {
     if (this.service == service) {
       this.service = null;
     }
   }
 
   @Override
   public String getJobGroup() {
     return JOB_GROUP;
   }
 
   @Override
   public String getJobName() {
     return JOB_NAME;
   }
 
   @Override
   public String getTriggerGroupName() {
     return TRIGGER_GROUP;
   }
 
   @Override
   public String getTriggerName() {
     return TRIGGER_NAME;
   }
 
   @Override
   public String getScannerName() {
     return SCANNER_NAME;
   }
 
   @Override
   public void scan() {
     try {
       service.removeScheduledRecordingsBeforeBuffer(getBuffer());
     } catch (UnauthorizedException e) {
       logger.error("Unable to scan for finished recordings, not authorized: ", e);
     } catch (SchedulerException e) {
       logger.error("Unable to scan for finished recordings: ", e);
     }
   }
 
   /** Quartz job to which cleans up the workflow instances */
   public static class Runner extends TypedQuartzJob<AbstractScanner> {
     private static final NeedleEye eye = new NeedleEye();
 
     public Runner() {
       super(Optional.of(eye));
     }
 
     @Override
     protected void execute(final AbstractScanner parameters, JobExecutionContext ctx) {
       logger.debug("Starting " + parameters.getScannerName() + " job.");
 
       // iterate all organizations
       for (final Organization org : parameters.getOrganizationDirectoryService().getOrganizations()) {
         // set the organization on the current thread
         parameters.getAdminContextFor(org.getId()).runInContext(parameters::scan);
       }
 
       logger.info("Finished " + parameters.getScannerName() + " job.");
     }
   }
 }