/*
    * Copyright 2009 the original author or authors.
    * 
    * Licensed under the Apache 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://www.apache.org/licenses/LICENSE-2.0
    *     
   * 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.openehealth.ipf.commons.ihe.xds.core.metadata;
  
  import ca.uhn.hl7v2.model.v25.datatype.CE;
  import org.apache.commons.lang3.StringUtils;
  import org.openehealth.ipf.commons.ihe.xds.core.metadata.jaxbadapters.LocalizedStringAdapter;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlAttribute;
  import javax.xml.bind.annotation.XmlType;
  import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
  import java.util.Objects;
  
  /**
   * Represents a code.
   * <p> 
   * All members of this class are allowed to be <code>null</code>.
   * @author Jens Riemschneider
   * @author Dmytro Rud
   */
  @XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
  @XmlType(name = "Code", propOrder = {"code", "schemeName", "displayName"})
  public class Code extends Hl7v2Based<CE> {
      private static final long serialVersionUID = 7603534956639945984L;
  
      private LocalizedString localizedString;
  
  
      /**
       * Constructs a code.
       */
      public Code() {
          super(new CE(MESSAGE));
      }
  
      /**
       * Constructs a code.
       */
      public Code(CE ce) {
          super(ce);
      }
  
      /**
       * Constructs a code.
       * @param code
       *          the value of the code.
       * @param displayName
       *          the display name of the code.
       * @param schemeName
       *          the schema of the code.
       */
      public Code(String code, LocalizedString displayName, String schemeName) {
          this();
          setCode(code);
          setDisplayName(displayName);
          setSchemeName(schemeName);
      }
  
      /**
       * @return the value of this code.
       */
      @XmlAttribute
      public String getCode() {
          return getHapiObject().getCe1_Identifier().getValue();
      }
      
      /**
       * @param code 
       *          the value of this code.
       */
      public void setCode(String code) {
          setValue(getHapiObject().getCe1_Identifier(), code);
      }
      
      /**
       * @return the display name of this code.
       */
      @XmlAttribute
      @XmlJavaTypeAdapter(value = LocalizedStringAdapter.class)
      public LocalizedString getDisplayName() {
          String value = getHapiObject().getCe2_Text().getValue();
  
          if (StringUtils.isEmpty(value)) {
              localizedString = null;
         }
         else if (localizedString != null) {
             localizedString.setValue(value);
         }
         else {
             localizedString = new LocalizedString(value);
         }
 
         return localizedString;
     }
     
     /**
      * @param displayName
      *          the display name of this code.
      */
     public void setDisplayName(LocalizedString displayName) {
         this.localizedString = displayName;
         if (displayName != null) {
             setValue(getHapiObject().getCe2_Text(), displayName.getValue());
         } else {
             getHapiObject().getCe2_Text().clear();
         }
     }
     
     /**
      * @return the schema of this code.
      */
     @XmlAttribute(name = "codeSystemName")
     public String getSchemeName() {
         return getHapiObject().getCe3_NameOfCodingSystem().getValue();
     }
     
     /**
      * @param schemeName
      *          the schema of this code.
      */
     public void setSchemeName(String schemeName) {
         setValue(getHapiObject().getCe3_NameOfCodingSystem(), schemeName);
     }
 
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         Code that = (Code) o;
         return Objects.equals(getCode(), that.getCode()) &&
                 Objects.equals(getDisplayName(), that.getDisplayName()) &&
                 Objects.equals(getSchemeName(), that.getSchemeName());
     }
 
     @Override
     public int hashCode() {
         return Objects.hash(getCode(), getDisplayName(), getSchemeName());
     }
 
     @Override
     public String toString() {
         return "Code(" +
                 "code=" + getCode() +
                 ", displayName=" + getDisplayName() +
                 ", schemeName=" + getSchemeName() +
                 ')';
     }
 }