content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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.apache.causeway.core.runtimeservices.xmlsnapshot;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.time.LocalDate;
  import java.time.format.DateTimeFormatter;
  import java.util.Locale;
  
  import jakarta.annotation.Priority;
  import jakarta.inject.Inject;
  import jakarta.inject.Named;
  
  import org.w3c.dom.Element;
  
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.stereotype.Service;
  
  import org.apache.causeway.applib.annotation.PriorityPrecedence;
  import org.apache.causeway.applib.services.xml.XmlService;
  import org.apache.causeway.applib.services.xmlsnapshot.XmlSnapshotService;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  import org.apache.causeway.core.metamodel.specloader.SpecificationLoader;
  import org.apache.causeway.core.metamodel.util.snapshot.XmlSnapshot;
  import org.apache.causeway.core.runtimeservices.CausewayModuleCoreRuntimeServices;
  
  /**
   * Default implementation of {@link XmlSnapshotService}.
   *
   * @since 1.0 {@index}
   */
  @Service
  @Named(CausewayModuleCoreRuntimeServices.NAMESPACE + ".XmlSnapshotServiceDefault")
  @Priority(PriorityPrecedence.MIDPOINT)
  @Qualifier("Default")
  public class XmlSnapshotServiceDefault implements XmlSnapshotService {
  
      private final XmlService xmlService;
      private final SpecificationLoader specificationLoader;
  
      @Inject
      public XmlSnapshotServiceDefault(
              final XmlService xmlService,
              final SpecificationLoader specificationLoader) {
          this.xmlService = xmlService;
          this.specificationLoader = specificationLoader;
      }
  
      static class XmlSnapshotServiceDefaultBuilder implements XmlSnapshotService.Snapshot.Builder{
  
          private final XmlSnapshotBuilder builder;
          public XmlSnapshotServiceDefaultBuilder(final SpecificationLoader specificationLoader, final Object domainObject) {
              builder = new XmlSnapshotBuilder(specificationLoader, domainObject);
          }
  
          @Override
          public void includePath(final String path) {
              builder.includePath(path);
          }
  
          @Override
          public void includePathAndAnnotation(final String path, final String annotation) {
              builder.includePathAndAnnotation(path, annotation);
          }
  
          @Override
          public XmlSnapshotService.Snapshot build() {
              XmlSnapshot xmlSnapshot = builder.build();
              return xmlSnapshot;
          }
      }
  
      /**
       * Creates a simple snapshot of the domain object.
       */
      @Override
      public XmlSnapshotService.Snapshot snapshotFor(final Object domainObject) {
          final ManagedObject adapter = ManagedObject.adaptSingular(specificationLoader, domainObject);
          return new XmlSnapshot(adapter);
      }
  
      /**
       * Creates a builder that allows a custom snapshot - traversing additional associated
       * properties or collections
       * (using {@link org.apache.causeway.applib.services.xmlsnapshot.XmlSnapshotService.Snapshot.Builder#includePath(String)}
       * and
       * {@link org.apache.causeway.applib.services.xmlsnapshot.XmlSnapshotService.Snapshot.Builder#includePathAndAnnotation(String, String)})
       * - to be created.
       */
      @Override
      public Snapshot.Builder builderFor(final Object domainObject) {
          return new XmlSnapshotServiceDefaultBuilder(specificationLoader, domainObject);
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public <T> T getChildElementValue(final Element el, final String tagname, final Class<T> expectedCls) {
          final Element chldEl = xmlService.getChildElement(el, tagname);
          final String dataType = chldEl.getAttribute("causeway:datatype");
          if(dataType == null) {
              throw new IllegalArgumentException(String.format("unable to locate %s/@datatype attribute", tagname));
          }
          if("causeway:String".equals(dataType)) {
              return (T)xmlService.getChildTextValue(chldEl);
          }
          if("causeway:LocalDate".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              final DateTimeFormatter parser = DateTimeFormatter
                      .ofPattern("dd-MMM-yyyy", Locale.ENGLISH);
              return (T)parser.parse(str, LocalDate::from);
          }
          if("causeway:Byte".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Byte.valueOf(str);
          }
          if("causeway:Short".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Short.valueOf(str);
          }
          if("causeway:Integer".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Integer.valueOf(str);
          }
          if("causeway:Long".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Long.valueOf(str);
          }
          if("causeway:Float".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Float.valueOf(str);
          }
          if("causeway:Double".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T)Double.valueOf(str);
          }
          if("causeway:BigDecimal".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T) new BigDecimal(str);
          }
          if("causeway:BigInteger".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T) new BigInteger(str);
          }
          if("causeway:Boolean".equals(dataType)) {
              final String str = xmlService.getChildTextValue(chldEl);
              return (T) Boolean.valueOf(str);
          }
          throw new IllegalArgumentException(
                  String.format("Datatype of '%s' for element '%s' not recognized", dataType, tagname));
      }
  
  }
  