/*
    * SPDX-FileCopyrightText: none
    * SPDX-License-Identifier: CC0-1.0
    */
   
   package gov.nist.secauto.oscal.lib.model.control.catalog;
   
   import gov.nist.secauto.metaschema.core.datatype.markup.MarkupLine;
   import gov.nist.secauto.metaschema.core.util.CollectionUtil;
  import gov.nist.secauto.metaschema.core.util.ObjectUtils;
  import gov.nist.secauto.oscal.lib.model.CatalogGroup;
  import gov.nist.secauto.oscal.lib.model.Control;
  import gov.nist.secauto.oscal.lib.model.ControlPart;
  import gov.nist.secauto.oscal.lib.model.Link;
  import gov.nist.secauto.oscal.lib.model.Parameter;
  import gov.nist.secauto.oscal.lib.model.Property;
  import gov.nist.secauto.oscal.lib.model.control.AbstractParameter;
  
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Objects;
  import java.util.stream.Stream;
  
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public abstract class AbstractCatalogGroup
      implements ICatalogGroup {
  
    @NonNull
    @Override
    public Stream<String> getReferencedParameterIds() {
  
      // get parameters referenced by the group's parts
      Stream<String> insertIds = CollectionUtil.listOrEmpty(getParts()).stream()
          // Get the full part hierarchy
          .flatMap(part -> Stream.concat(Stream.of(part), part.getPartsRecursively()))
          // Get the inserts for each part
          .flatMap(part -> part.getInserts(insert -> "param".equals(insert.getType().toString())))
          // Get the param ids for each insert
          .map(insert -> insert.getIdReference().toString())
          .flatMap(ObjectUtils::filterNull);
  
      // get parameters referenced by the control's parameters
      Stream<String> parameterIds = CollectionUtil.listOrEmpty(getParams()).stream()
          .flatMap(ObjectUtils::filterNull)
          .flatMap(AbstractParameter::getParameterReferences);
  
      return ObjectUtils.notNull(
          Stream.concat(insertIds, parameterIds).distinct());
    }
  
    @NonNull
    public static Builder builder(@NonNull String id) {
      return new Builder(id);
    }
  
    public static class Builder {
      @NonNull
      private final String id;
  
      private String clazz;
      private MarkupLine title;
      private final List<Parameter> params = new LinkedList<>();
      private final List<Property> props = new LinkedList<>();
      private final List<Link> links = new LinkedList<>();
      private final List<ControlPart> parts = new LinkedList<>();
      private final List<CatalogGroup> groups = new LinkedList<>();
      private final List<Control> controls = new LinkedList<>();
  
      public Builder(@NonNull String id) {
        this.id = ObjectUtils.requireNonNull(id, "id");
      }
  
      @NonNull
      public Builder clazz(@NonNull String value) {
        this.clazz = ObjectUtils.requireNonNull(value, "value");
        return this;
      }
  
      @NonNull
      public Builder title(@NonNull String markdown) {
        this.title = MarkupLine.fromMarkdown(Objects.requireNonNull(markdown, "markdown"));
        return this;
      }
  
      @NonNull
      public Builder title(@NonNull MarkupLine value) {
        this.title = ObjectUtils.requireNonNull(value, "value");
        return this;
      }
  
      @NonNull
      public Builder param(@NonNull Parameter value) {
        this.params.add(Objects.requireNonNull(value, "value"));
        return this;
      }
  
      @NonNull
      public Builder prop(@NonNull Property value) {
       this.props.add(Objects.requireNonNull(value, "value"));
       return this;
     }
 
     @NonNull
     public Builder link(@NonNull Link value) {
       this.links.add(Objects.requireNonNull(value, "value"));
       return this;
     }
 
     @NonNull
     public Builder part(@NonNull ControlPart value) {
       this.parts.add(Objects.requireNonNull(value, "value"));
       return this;
     }
 
     @NonNull
     public Builder group(@NonNull CatalogGroup value) {
       this.groups.add(Objects.requireNonNull(value, "value"));
       return this;
     }
 
     @NonNull
     public Builder control(@NonNull Control value) {
       this.controls.add(Objects.requireNonNull(value, "value"));
       return this;
     }
 
     @NonNull
     public CatalogGroup build() {
       CatalogGroup retval = new CatalogGroup();
       retval.setId(id);
 
       if (title == null) {
         throw new IllegalStateException("a title must be provided");
       }
       retval.setTitle(title);
 
       if (clazz != null) {
         retval.setClazz(clazz);
       }
       if (!params.isEmpty()) {
         retval.setParams(params);
       }
       if (!props.isEmpty()) {
         retval.setProps(props);
       }
       if (!links.isEmpty()) {
         retval.setLinks(links);
       }
       if (!parts.isEmpty()) {
         retval.setParts(parts);
       }
       if (!controls.isEmpty()) {
         retval.setControls(controls);
       }
       if (!groups.isEmpty()) {
         retval.setGroups(groups);
       }
 
       return retval;
     }
   }
 }