/*
    * Copyright 2018-2022 Medical Information Systems Research Group (https://medical.zcu.cz),
    * Department of Computer Science and Engineering, University of West Bohemia.
    * Address: Univerzitni 8, 306 14 Plzen, Czech Republic.
    *
    * Author Petr Vcelak (vcelak@kiv.zcu.cz).
    *
    * This file is part of MRECore project.
    *
   * MRECore is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License.
   *
   * MRECore is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with MRECore. If not, see <http://www.gnu.org/licenses/>.
   */
  package cz.zcu.mre.data.rdf;
  
  import com.fasterxml.jackson.annotation.JsonProperty;
  import cz.zcu.mre.config.ApplicationConfiguration;
  import java.io.Serializable;
  import org.apache.jena.ontology.Individual;
  import org.apache.jena.ontology.OntClass;
  import org.apache.jena.ontology.OntProperty;
  import org.apache.jena.rdf.model.Resource;
  import org.apache.jena.rdf.model.ResourceFactory;
  import org.apache.jena.vocabulary.RDFS;
  
  /**
   * Wrapper for RDF Resource.
   *
   * @author Petr Vcelak (vcelak@kiv.zcu.cz)
   */
  public class ResourceWrapper implements Serializable {
  
      private Resource resource;
  
      private String label;
  
      private int intOrder = 0;
      private String stringOrder = "";
  
      public ResourceWrapper(Resource resource) {
  
          if (resource == null) {
              throw new IllegalArgumentException("Null resource is not allowed.");
          }
  
          this.resource = resource;
      }
  
      public ResourceWrapper(String resource) {
  
          if (resource == null) {
              throw new IllegalArgumentException("Null resource is not allowed.");
          }
  
          setURI(resource);
      }
  
      public Resource getResource() {
          return resource;
      }
  
      public void setResource(Resource resource) {
          this.resource = resource;
      }
  
      @JsonProperty("resource")
      public String getURI() {
          return this.resource.getURI();
      }
  
      @JsonProperty("resource")
      public final void setURI(String uri) {
  
          this.resource = ResourceFactory.createResource(uri);
      }
  
      @Override
      public String toString() {
          return getURI();
      }
  
      public String getLabel() {
  
          if (label != null) {
              return label;
          }
  
          /* get label -- it is quite slow */
          String language = ApplicationConfiguration.DEFAULT_LANGUAGE; // TODO get language from the session
          if (resource instanceof Individual) {
              label = ((Individual) resource).getLabel(language);
             if (label != null) {
                 return label;
             }
 
             label = ((Individual) resource).getLabel(null);
             if (label != null) {
                 return label;
             }
 
             return resource.getLocalName();
 
         } else if (resource instanceof OntClass) {
             label = ((OntClass) resource).getLabel(language);
             if (label != null) {
                 return label;
             }
 
             label = ((OntClass) resource).getLabel(null);
             if (label != null) {
                 return label;
             }
 
             return resource.getLocalName();
 
         } else if (resource instanceof OntProperty) {
             label = ((OntProperty) resource).getLabel(language);
             if (label != null) {
                 return label;
             }
 
             label = ((OntProperty) resource).getLabel(null);
             if (label != null) {
                 return label;
             }
 
             return resource.getLocalName();
         }
 
         if (resource.getModel() != null) {
             Resource r = this.resource.getPropertyResourceValue(RDFS.label);
             if (r != null) {
                 label = r.asLiteral().getString();
                 return label;
             }
         }
 
         // use localized 'empty' message
         label = "form.instance.empty";
         return label;
     }
 
     public void setLabel(String label) {
         this.label = label;
     }
 
     public int getIntOrder() {
         return intOrder;
     }
 
     public void setIntOrder(int intOrder) {
         this.intOrder = intOrder;
     }
 
     public String getStringOrder() {
         return stringOrder;
     }
 
     public void setStringOrder(String stringOrder) {
         this.stringOrder = stringOrder;
     }
     
 }