content: /*
   * Copyright © 2018-2025 Commonwealth Scientific and Industrial Research
   * Organisation (CSIRO) ABN 41 687 119 230.
   *
   * 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 au.csiro.pathling.fhirpath.definition.defaults;
  
  import au.csiro.pathling.fhirpath.definition.ChildDefinition;
  import au.csiro.pathling.fhirpath.definition.ElementDefinition;
  import jakarta.annotation.Nonnull;
  import java.util.List;
  import java.util.Optional;
  import lombok.Value;
  import org.hl7.fhir.r4.model.Enumerations.FHIRDefinedType;
  
  /**
   * The default implementation of a composite data type allowing for explicit definition of its
   * children and other properties.
   */
  @Value(staticConstructor = "of")
  public class DefaultCompositeDefinition implements ElementDefinition {
  
    String name;
    List<ChildDefinition> children;
    int cardinality;
    FHIRDefinedType type;
  
    @Override
    @Nonnull
    public String getElementName() {
      return name;
    }
  
    @Override
    @Nonnull
    public Optional<ChildDefinition> getChildElement(@Nonnull final String name) {
      return children.stream()
          .filter(child -> child.getName().equals(name))
          .findFirst();
    }
  
    @Override
    @Nonnull
    public Optional<FHIRDefinedType> getFhirType() {
      return Optional.of(type);
    }
  
    /**
     * Creates a backbone element definition.
     *
     * @param name the element name
     * @param children the child definitions
     * @param cardinality the cardinality
     * @return a new DefaultCompositeDefinition for a backbone element
     */
    @Nonnull
    public static DefaultCompositeDefinition backbone(@Nonnull final String name,
        @Nonnull final List<ChildDefinition> children, final int cardinality) {
      return new DefaultCompositeDefinition(name, children, cardinality,
          FHIRDefinedType.BACKBONEELEMENT);
    }
  
  }
  