/*
    * 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.series;
  
  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 SeriesSearchQuery} implementation of the Elasticsearch query builder.
   */
  public class SeriesQueryBuilder extends AbstractElasticsearchQueryBuilder<SeriesSearchQuery> {
  
    /** The logging facility */
    private static final Logger logger = LoggerFactory.getLogger(SeriesQueryBuilder.class);
  
    /**
     * Creates a new elastic search query based on the series query.
     *
     * @param query
     *          the series query
     */
    public SeriesQueryBuilder(SeriesSearchQuery query) {
      super(query);
    }
  
    @Override
    public void buildQuery(SeriesSearchQuery query) {
      // Organization
      if (query.getOrganization() == null) {
        throw new IllegalStateException("No organization set on the series search query!");
      }
  
      and(SeriesIndexSchema.ORGANIZATION, query.getOrganization());
  
      // Series identifier
      if (query.getIdentifier().length > 0) {
        and(SeriesIndexSchema.UID, query.getIdentifier());
      }
  
      // Title
      if (query.getTitle() != null) {
        and(SeriesIndexSchema.TITLE, query.getTitle());
      }
  
      // 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(SeriesIndexSchema.ACL_PERMISSION_PREFIX.concat(action), role.getName());
            }
          }
        }
      }
  
      if (query.getDescription() != null) {
        and(SeriesIndexSchema.DESCRIPTION, query.getDescription());
      }
  
      if (query.getSubjects().length > 0) {
        and(SeriesIndexSchema.SUBJECT, query.getSubjects());
      }
  
      if (query.getLanguage() != null) {
        and(SeriesIndexSchema.LANGUAGE, query.getLanguage());
      }
  
      if (query.getCreator() != null) {
       and(SeriesIndexSchema.CREATOR, query.getCreator());
     }
 
     if (query.getLicense() != null) {
       and(SeriesIndexSchema.LICENSE, query.getLicense());
     }
 
     if (query.getAccessPolicy() != null) {
       and(SeriesIndexSchema.ACCESS_POLICY, query.getAccessPolicy());
     }
 
     if (query.getCreatedFrom() != null && query.getCreatedTo() != null) {
       and(SeriesIndexSchema.CREATED_DATE_TIME, query.getCreatedFrom(), query.getCreatedTo());
     }
 
     if (query.getOrganizers().length > 0) {
       and(SeriesIndexSchema.ORGANIZERS, query.getOrganizers());
     }
 
     if (query.getContributors().length > 0) {
       and(SeriesIndexSchema.CONTRIBUTORS, query.getContributors());
     }
 
     if (query.getPublishers().length > 0) {
       and(SeriesIndexSchema.PUBLISHERS, query.getPublishers());
     }
 
     if (query.getManagedAcl() != null) {
       and(SeriesIndexSchema.MANAGED_ACL, query.getManagedAcl());
     }
 
     if (query.getRightsHolder() != null) {
       and(SeriesIndexSchema.RIGHTS_HOLDER, query.getRightsHolder());
     }
 
     if (query.getTheme() != null) {
       and(SeriesIndexSchema.THEME, query.getTheme());
     }
 
     if (query.getCreatedFrom() != null && query.getCreatedTo() != null) {
       and(SeriesIndexSchema.CREATED_DATE_TIME, query.getCreatedFrom(), query.getCreatedTo());
     }
 
     // Text
     if (query.getTerms() != null) {
       for (SearchTerms<String> terms : query.getTerms()) {
         StringBuffer queryText = new StringBuffer();
         for (String term : terms.getTerms()) {
           if (queryText.length() > 0) {
             queryText.append(" ");
           }
           queryText.append(term);
         }
 
         additionalMultiQueryFields.add(SeriesIndexSchema.UID);
 
         fuzzy = query.isFuzzySearch();
         this.text = queryText.toString();
 
         if (Quantifier.All.equals(terms.getQuantifier())) {
           if (groups == null) {
             groups = new ArrayList<ValueGroup>();
           }
           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();
     }
 
   }
 
 }