/*
    * SPDX-FileCopyrightText: none
    * SPDX-License-Identifier: CC0-1.0
    */
   
   package dev.metaschema.oscal.lib.model.control;
   
   import java.util.ArrayList;
   import java.util.Arrays;
  import java.util.Collection;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Objects;
  import java.util.stream.Stream;
  
  import dev.metaschema.core.datatype.markup.MarkupLine;
  import dev.metaschema.core.datatype.markup.MarkupMultiline;
  import dev.metaschema.core.util.CollectionUtil;
  import dev.metaschema.core.util.ObjectUtils;
  import dev.metaschema.oscal.lib.model.Link;
  import dev.metaschema.oscal.lib.model.Parameter;
  import dev.metaschema.oscal.lib.model.ParameterConstraint;
  import dev.metaschema.oscal.lib.model.ParameterGuideline;
  import dev.metaschema.oscal.lib.model.ParameterSelection;
  import dev.metaschema.oscal.lib.model.Property;
  import dev.metaschema.oscal.lib.model.metadata.IProperty;
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public abstract class AbstractParameter implements IParameter {
  
    @Override
    public Stream<String> getParameterReferences() {
  
      // handle prop name="aggregates"
      Stream<String> aggregatesIds = CollectionUtil.listOrEmpty(getProps()).stream()
          .filter(Objects::nonNull)
          .filter(prop -> prop.isNamespaceEqual(IProperty.OSCAL_NAMESPACE) && "aggregates".equals(prop.getName()))
          .map(Property::getValue);
  
      // handle select/choice/insert
      ParameterSelection selection = getSelect();
  
      Stream<String> selectInsertIds;
      if (selection == null) {
        selectInsertIds = Stream.empty();
      } else {
        selectInsertIds = CollectionUtil.listOrEmpty(selection.getChoice()).stream()
            .filter(Objects::nonNull)
            .flatMap(choice -> choice.getInserts(insert -> "param".equals(insert.getType().toString())).stream()
                .map(insert -> insert.getIdReference().toString()));
      }
      Stream<String> retval = Stream.concat(aggregatesIds, selectInsertIds)
          .filter(Objects::nonNull)
          .distinct();
      assert retval != null;
      return retval;
    }
  
    @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 final List<Property> props = new LinkedList<>();
      private final List<Link> links = new LinkedList<>();
      private MarkupLine label;
      private MarkupMultiline usage;
      private final List<ParameterConstraint> constraints = new LinkedList<>();
      private final List<ParameterGuideline> guidelines = new LinkedList<>();
      private List<String> values = new LinkedList<>();
      private ParameterSelection selection;
      private MarkupMultiline remarks;
  
      public Builder(@NonNull String id) {
        this.id = ObjectUtils.requireNonNull(id);
      }
  
      @NonNull
      public Builder clazz(@NonNull String value) {
        this.clazz = ObjectUtils.requireNonNull(value);
        return this;
      }
  
      @NonNull
      public Builder prop(@NonNull Property value) {
        this.props.add(ObjectUtils.requireNonNull(value));
        return this;
      }
  
      @NonNull
      public Builder link(@NonNull Link value) {
        this.links.add(ObjectUtils.requireNonNull(value));
        return this;
      }
 
     @NonNull
     public Builder label(@NonNull String markdown) {
       return label(MarkupLine.fromMarkdown(Objects.requireNonNull(markdown)));
     }
 
     @NonNull
     public Builder label(@NonNull MarkupLine value) {
       this.label = ObjectUtils.requireNonNull(value);
       return this;
     }
 
     @NonNull
     public Builder usage(@NonNull String markdown) {
       return usage(MarkupMultiline.fromMarkdown(ObjectUtils.requireNonNull(markdown)));
     }
 
     @NonNull
     public Builder usage(@NonNull MarkupMultiline value) {
       this.usage = ObjectUtils.requireNonNull(value);
       return this;
     }
 
     @NonNull
     public Builder constraint(@NonNull ParameterConstraint value) {
       this.constraints.add(ObjectUtils.requireNonNull(value));
       return this;
     }
 
     @NonNull
     public Builder guideline(@NonNull ParameterGuideline value) {
       this.guidelines.add(ObjectUtils.requireNonNull(value));
       return this;
     }
 
     @SuppressWarnings("null")
     @NonNull
     public Builder values(@NonNull String... values) {
       return values(Arrays.asList(values));
     }
 
     @NonNull
     public Builder values(@NonNull Collection<String> values) {
       this.values = new ArrayList<>(values);
       return this;
     }
 
     @NonNull
     public Builder select(@NonNull ParameterSelection value) {
       this.selection = Objects.requireNonNull(value);
       return this;
     }
 
     @NonNull
     public Builder remarks(@NonNull MarkupMultiline value) {
       this.remarks = Objects.requireNonNull(value);
       return this;
     }
 
     @NonNull
     public Parameter build() {
       Parameter retval = new Parameter();
       retval.setId(id);
 
       if (clazz != null) {
         retval.setClazz(clazz);
       }
       if (!props.isEmpty()) {
         retval.setProps(props);
       }
       if (!links.isEmpty()) {
         retval.setLinks(links);
       }
       if (label != null) {
         retval.setLabel(label);
       }
       if (usage != null) {
         retval.setUsage(usage);
       }
       if (!constraints.isEmpty()) {
         retval.setConstraints(constraints);
       }
       if (!guidelines.isEmpty()) {
         retval.setGuidelines(guidelines);
       }
       if (!values.isEmpty()) {
         retval.setValues(values);
       }
       if (selection != null) {
         retval.setSelect(selection);
       }
       if (remarks != null) {
         retval.setRemarks(remarks);
       }
       return retval;
     }
   }
 }