/*
    * 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.elasticsearch.index.objects.event;
  
  import static org.opencastproject.security.api.SecurityConstants.GLOBAL_ADMIN_ROLE;
  
  import org.opencastproject.elasticsearch.api.SearchTerms;
  import org.opencastproject.elasticsearch.api.SearchTerms.Quantifier;
  import org.opencastproject.elasticsearch.impl.AbstractElasticsearchQueryBuilder;
  import org.opencastproject.elasticsearch.impl.IndexSchema;
  import org.opencastproject.security.api.Role;
  import org.opencastproject.security.api.User;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.ArrayList;
  
  /**
   * Opencast {@link EventSearchQuery} implementation of the Elasticsearch query builder.
   */
  public class EventQueryBuilder extends AbstractElasticsearchQueryBuilder<EventSearchQuery> {
  
    /** The logging facility */
    private static final Logger logger = LoggerFactory.getLogger(EventQueryBuilder.class);
  
    /**
     * Creates a new elastic search query based on the events query.
     *
     * @param query
     *          the events query
     */
    public EventQueryBuilder(EventSearchQuery query) {
      super(query);
    }
  
    @Override
    public void buildQuery(EventSearchQuery query) {
      // Organization
      if (query.getOrganization() == null) {
        throw new IllegalStateException("No organization set on the event search query!");
      }
  
      and(EventIndexSchema.ORGANIZATION, query.getOrganization());
  
      // Recording identifier
      if (query.getIdentifier().length > 0) {
        and(EventIndexSchema.UID, query.getIdentifier());
      }
  
      // Title
      if (query.getTitle() != null) {
        and(EventIndexSchema.TITLE, query.getTitle());
      }
  
      // Description
      if (query.getDescription() != null) {
        and(EventIndexSchema.DESCRIPTION, query.getDescription());
      }
  
      // Action
      if (query.getActions() != null && query.getActions().length > 0) {
        User user = query.getUser();
        if (!user.hasRole(GLOBAL_ADMIN_ROLE) && !user.hasRole(user.getOrganization().getAdminRole())) {
          for (Role role : user.getRoles()) {
            for (String action : query.getActions()) {
              and(EventIndexSchema.ACL_PERMISSION_PREFIX.concat(action), role.getName());
            }
          }
        }
      }
  
      // Presenter
      if (query.getPresenters() != null) {
        for (String presenter : query.getPresenters()) {
          and(EventIndexSchema.PRESENTER, presenter);
        }
      }
  
      // Contributors
     if (query.getContributors().length > 0) {
       and(EventIndexSchema.CONTRIBUTOR, query.getContributors());
     }
 
     // Subject
     if (query.getSubject() != null) {
       and(EventIndexSchema.SUBJECT, query.getSubject());
     }
 
     // Location
     if (query.getLocation() != null) {
       and(EventIndexSchema.LOCATION, query.getLocation());
     }
 
     // Series Id
     if (query.getSeriesId() != null) {
       and(EventIndexSchema.SERIES_ID, query.getSeriesId());
     }
 
     // Series Name
     if (query.getSeriesName() != null) {
       and(EventIndexSchema.SERIES_NAME, query.getSeriesName());
     }
 
     // Language
     if (query.getLanguage() != null) {
       and(EventIndexSchema.LANGUAGE, query.getLanguage());
     }
 
     // Source
     if (query.getSource() != null) {
       and(EventIndexSchema.SOURCE, query.getSource());
     }
 
     // Created
     if (query.getCreated() != null) {
       and(EventIndexSchema.CREATED, query.getCreated());
     }
 
     // Creator
     if (query.getCreator() != null) {
       and(EventIndexSchema.CREATOR, query.getCreator());
     }
 
     // Publisher
     if (query.getPublisher() != null) {
       and(EventIndexSchema.PUBLISHER, query.getPublisher());
     }
 
     // License
     if (query.getLicense() != null) {
       and(EventIndexSchema.LICENSE, query.getLicense());
     }
 
     // Rights
     if (query.getRights() != null) {
       and(EventIndexSchema.RIGHTS, query.getRights());
     }
 
     // Access policy
     if (query.getAccessPolicy() != null) {
       and(EventIndexSchema.ACCESS_POLICY, query.getAccessPolicy());
     }
 
     // Managed ACL
     if (query.getManagedAcl() != null) {
       and(EventIndexSchema.MANAGED_ACL, query.getManagedAcl());
     }
 
     // Workflow state
     if (query.getWorkflowState() != null) {
       and(EventIndexSchema.WORKFLOW_STATE, query.getWorkflowState());
     }
 
     // Workflow id
     if (query.getWorkflowId() != null) {
       and(EventIndexSchema.WORKFLOW_ID, query.getWorkflowId());
     }
 
     // Workflow definition id
     if (query.getWorkflowDefinition() != null) {
       and(EventIndexSchema.WORKFLOW_DEFINITION_ID, query.getWorkflowDefinition());
     }
 
     // Event status
     if (query.getEventStatus() != null) {
       and(EventIndexSchema.EVENT_STATUS, query.getEventStatus());
     }
 
     // Recording start date period
     if (query.getStartFrom() != null && query.getStartTo() != null) {
       and(EventIndexSchema.START_DATE, query.getStartFrom(), query.getStartTo());
     }
 
     // Recording start date
     if (query.getStartDate() != null) {
       and(EventIndexSchema.START_DATE, query.getStartDate());
     }
 
     // Recording duration
     if (query.getDuration() != null) {
       and(EventIndexSchema.DURATION, query.getDuration());
     }
 
     // Has comments
     if (query.getHasComments() != null) {
       and(EventIndexSchema.HAS_COMMENTS, query.getHasComments());
     }
 
     // Has open comments
     if (query.getHasOpenComments() != null) {
       and(EventIndexSchema.HAS_OPEN_COMMENTS, query.getHasOpenComments());
     }
 
     // Publications
     if (query.getComments() != null) {
       for (String comment : query.getComments()) {
         and(EventIndexSchema.COMMENTS, comment);
       }
     }
 
     // Publications
     if (query.getPublications() != null) {
       for (String publication : query.getPublications()) {
         and(EventIndexSchema.PUBLICATION, publication);
       }
     }
 
     // Is published
     if (query.getIsPublished() != null) {
       and(EventIndexSchema.IS_PUBLISHED, query.getIsPublished());
     }
 
     // Archive version
     if (query.getArchiveVersion() != null) {
       and(EventIndexSchema.ARCHIVE_VERSION, query.getArchiveVersion());
     }
 
     // Technical agent identifier
     if (query.getAgentId() != null) {
       and(EventIndexSchema.AGENT_ID, query.getAgentId());
     }
 
     // Technical start date period
     if (query.getTechnicalStartFrom() != null && query.getTechnicalStartTo() != null) {
       and(EventIndexSchema.TECHNICAL_START, query.getTechnicalStartFrom(), query.getTechnicalStartTo());
     }
 
     // Technical start date
     if (query.getTechnicalStartTime() != null) {
       and(EventIndexSchema.TECHNICAL_START, query.getTechnicalStartTime());
     }
 
     // Technical end date
     if (query.getTechnicalEndTime() != null) {
       and(EventIndexSchema.TECHNICAL_END, query.getTechnicalEndTime());
     }
 
     // Technical presenters
     if (query.getTechnicalPresenters().length > 0) {
       and(EventIndexSchema.TECHNICAL_PRESENTERS, query.getTechnicalPresenters());
     }
 
     // Text
     if (query.getTerms() != null) {
       for (SearchTerms<String> terms : query.getTerms()) {
         StringBuilder queryText = new StringBuilder();
         for (String term : terms.getTerms()) {
           if (queryText.length() > 0) {
             queryText.append(" ");
           }
           queryText.append(term);
         }
         if (query.isFuzzySearch()) {
           fuzzyText = queryText.toString();
         } else {
           this.text = queryText.toString();
         }
         if (Quantifier.All.equals(terms.getQuantifier())) {
           if (groups == null) {
             groups = new ArrayList<>();
           }
           if (query.isFuzzySearch()) {
             logger.warn("All quantifier not supported in conjunction with wildcard text");
           }
           groups.add(new ValueGroup(IndexSchema.TEXT, (Object[]) terms.getTerms().toArray(new String[terms.size()])));
         }
       }
     }
 
     // Filter query
     if (query.getFilter() != null) {
       this.filter = query.getFilter();
     }
 
   }
 
 }