/*
    * 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.graphql.event;
  
  import org.opencastproject.elasticsearch.index.objects.event.Event;
  import org.opencastproject.graphql.datafetcher.event.CommonEventMetadataDataFetcher;
  import org.opencastproject.graphql.datafetcher.event.CommonEventMetadataV2DataFetcher;
  import org.opencastproject.graphql.datafetcher.series.SeriesDataFetcher;
  import org.opencastproject.graphql.execution.context.OpencastContextManager;
  import org.opencastproject.graphql.series.GqlSeries;
  import org.opencastproject.graphql.type.DateTimeFunction;
  import org.opencastproject.graphql.type.DurationFunction;
  import org.opencastproject.graphql.type.output.GqlCommonEventMetadata;
  import org.opencastproject.graphql.type.output.GqlCommonEventMetadataV2;
  import org.opencastproject.graphql.type.output.GqlPublication;
  import org.opencastproject.workflow.api.WorkflowService;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Objects;
  import java.util.stream.Collectors;
  
  import graphql.annotations.annotationTypes.GraphQLDataFetcher;
  import graphql.annotations.annotationTypes.GraphQLDescription;
  import graphql.annotations.annotationTypes.GraphQLField;
  import graphql.annotations.annotationTypes.GraphQLID;
  import graphql.annotations.annotationTypes.GraphQLName;
  import graphql.annotations.annotationTypes.GraphQLNonNull;
  import graphql.annotations.annotationTypes.GraphQLType;
  import graphql.schema.DataFetchingEnvironment;
  
  @GraphQLName(GqlEvent.TYPE_NAME)
  @GraphQLDescription("A Event.")
  public class GqlEvent {
  
    public static final String TYPE_NAME = "Event";
  
    private final Event event;
  
    public GqlEvent(Event event) {
      this.event = event;
    }
  
    @GraphQLID
    @GraphQLField
    @GraphQLNonNull
    public String id() {
      return this.event.getIdentifier();
    }
  
    @GraphQLField
    @GraphQLNonNull
    public String title() {
      return this.event.getTitle();
    }
  
    @GraphQLField
    public String description() {
      return this.event.getDescription();
    }
  
    @GraphQLField
    public List<String> presenters() {
      return this.event.getPresenters();
    }
  
    @GraphQLField
    public List<String> contributors() {
      return this.event.getContributors();
    }
  
    @GraphQLField
    public String publisher() {
      return this.event.getPublisher();
    }
  
    @GraphQLField
    public String location() {
      return this.event.getLocation();
    }
 
   @GraphQLField
   public String license() {
     return this.event.getLicense();
   }
 
   @GraphQLField
   public String creator() {
     return this.event.getCreator();
   }
 
   @GraphQLField
   @GraphQLType(DateTimeFunction.class)
   public String created() {
     return this.event.getCreated();
   }
 
   @GraphQLField
   @GraphQLNonNull
   @GraphQLType(DurationFunction.class)
   public Long duration() {
     return this.event.getDuration();
   }
 
   @GraphQLField
   @GraphQLType(DateTimeFunction.class)
   public String startDate() {
     return this.event.getRecordingStartDate();
   }
 
   @GraphQLField
   @GraphQLType(DateTimeFunction.class)
   public String endDate() {
     return this.event.getRecordingEndDate();
   }
 
   @GraphQLField
   public String technicalStartTime() {
     return this.event.getTechnicalStartTime();
   }
 
   @GraphQLField
   public String technicalEndTime() {
     return this.event.getTechnicalEndTime();
   }
 
   @GraphQLField
   @GraphQLNonNull
   public String eventStatus() {
     return this.event.getEventStatus();
   }
 
   @GraphQLField
   public String displayableStatus() {
     var workflowService = OpencastContextManager.getCurrentContext().getService(WorkflowService.class);
     if (workflowService != null) {
       return this.event.getDisplayableStatus(workflowService.getWorkflowStateMappings());
     }
     return null;
   }
 
   @GraphQLField
   @GraphQLDescription("Return publications filterable by channel and tags")
   public List<GqlPublication> publications(
       @GraphQLName("channel") String channel,
       @GraphQLName("tags") List<String> tags) {
     return event.getPublications().stream()
         .filter(e -> !Objects.equals(e.getChannel(), "internal"))
         .filter(e -> channel == null || Objects.equals(e.getChannel(), channel))
         .filter(e -> tags == null || Arrays.stream(e.getTags()).anyMatch(tags::contains))
         .map(GqlPublication::new)
         .collect(Collectors.toList());
   }
 
   @GraphQLField
   public String seriesId() {
     return this.event.getSeriesId();
   }
 
   @GraphQLField
   public String seriesName() {
     return this.event.getSeriesName();
   }
 
   @GraphQLField
   public GqlSeries series(final DataFetchingEnvironment environment) {
     var seriesId = this.event.getSeriesId();
     if (seriesId == null) {
       return null;
     } else {
       return new SeriesDataFetcher(this.event.getSeriesId()).get(environment);
     }
   }
 
   @GraphQLField
   @GraphQLNonNull
   public Boolean hasPreview() {
     return this.event.hasPreview();
   }
 
   @GraphQLField
   @GraphQLNonNull
   @GraphQLDescription("Common metadata of the event.")
   @GraphQLDataFetcher(CommonEventMetadataDataFetcher.class)
   public GqlCommonEventMetadata commonMetadata(final DataFetchingEnvironment environment) {
     return null;
   }
 
   @GraphQLField
   @GraphQLNonNull
   @GraphQLDescription("Common metadata of the event.")
   @GraphQLDataFetcher(CommonEventMetadataV2DataFetcher.class)
   public GqlCommonEventMetadataV2 commonMetadataV2(final DataFetchingEnvironment environment) {
     return null;
   }
 
   public Event getEvent() {
     return event;
   }
 
 }