/*
    * Copyright 2011 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.transform.responses;
  
  import org.apache.commons.lang3.Validate;
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLFactory;
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLRegistryError;
  import org.openehealth.ipf.commons.ihe.xds.core.responses.ErrorCode;
  import org.openehealth.ipf.commons.ihe.xds.core.responses.ErrorInfo;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import static org.apache.commons.lang3.Validate.notNull;
  
  /**
   * Transforms between lists of {@link ErrorInfo} objects and their ebXML representations.
   * @author Dmytro Rud
   */
  public class ErrorInfoListTransformer {
      private final EbXMLFactory factory;
  
      /**
       * Constructs the transformer.
       * @param factory
       *          the factory for ebXML objects.
       */
      public ErrorInfoListTransformer(EbXMLFactory factory) {
          Validate.notNull(factory, "ebXML factory must be not null");
          this.factory = factory;
      }
  
  
      public List<EbXMLRegistryError> toEbXML(List<ErrorInfo> errorInfoList) {
          notNull(errorInfoList, "error info list cannot be null");
          return errorInfoList.stream()
                  .map(this::toEbXML)
                  .collect(Collectors.toList());
      }
  
  
      public List<ErrorInfo> fromEbXML(List<EbXMLRegistryError> registryErrorList) {
          notNull(registryErrorList, "registry error list cannot be null");
  
          return registryErrorList.stream()
                  .map(this::fromEbXML)
                  .collect(Collectors.toList());
      }
  
  
      public EbXMLRegistryError toEbXML(ErrorInfo errorInfo) {
          notNull(errorInfo, "error info cannot be null");
  
          EbXMLRegistryError regError = factory.createRegistryError();
  
          regError.setErrorCode((errorInfo.getErrorCode() == ErrorCode._USER_DEFINED)
                  ? errorInfo.getCustomErrorCode()
                  : ErrorCode.getOpcode(errorInfo.getErrorCode()));
  
          regError.setCodeContext(errorInfo.getCodeContext());
          regError.setSeverity(errorInfo.getSeverity());
          regError.setLocation(errorInfo.getLocation());
          return regError;
      }
  
  
      public ErrorInfo fromEbXML(EbXMLRegistryError ebXML) {
          ErrorInfo errorInfo = new ErrorInfo();
  
          ErrorCode errorCode = ErrorCode.valueOfOpcode(ebXML.getErrorCode());
          errorInfo.setErrorCode(errorCode);
          if (errorCode == ErrorCode._USER_DEFINED) {
              errorInfo.setCustomErrorCode(ebXML.getErrorCode());
          }
  
          errorInfo.setCodeContext(ebXML.getCodeContext());
          errorInfo.setLocation(ebXML.getLocation());
          errorInfo.setSeverity(ebXML.getSeverity());
          return errorInfo;
      }
  
  }