/*
    * SPDX-FileCopyrightText: none
    * SPDX-License-Identifier: CC0-1.0
    */
   
   package gov.nist.secauto.oscal.lib.model.metadata;
   
   import gov.nist.secauto.metaschema.core.datatype.markup.MarkupLine;
   import gov.nist.secauto.metaschema.core.util.ObjectUtils;
  import gov.nist.secauto.oscal.lib.model.Link;
  
  import java.net.URI;
  import java.util.LinkedList;
  import java.util.List;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public abstract class AbstractLink implements ILink {
  
    public static List<Link> merge(@NonNull List<Link> original, @NonNull List<Link> additional) {
      return Stream.concat(original.stream(), additional.stream())
          .collect(Collectors.toCollection(LinkedList::new));
    }
  
    @NonNull
    public static Builder builder(@NonNull URI href) {
      return new Builder(href);
    }
  
    public static class Builder {
      @NonNull
      private final URI href;
      private String rel;
      private String mediaType;
      private MarkupLine text;
  
      public Builder(@NonNull URI href) {
        this.href = ObjectUtils.requireNonNull(href, "href");
      }
  
      @NonNull
      public Builder relation(@NonNull String relation) {
        this.rel = ObjectUtils.requireNonNull(relation, "rel");
        return this;
      }
  
      @NonNull
      public Builder value(@NonNull String mediaType) {
        this.mediaType = ObjectUtils.requireNonNull(mediaType, "mediaType");
        return this;
      }
  
      @NonNull
      public Builder clazz(@NonNull MarkupLine text) {
        this.text = ObjectUtils.requireNonNull(text, "text");
        return this;
      }
  
      @NonNull
      public Link build() {
        Link retval = new Link();
        retval.setHref(href);
        if (rel != null) {
          retval.setRel(rel);
        }
        if (mediaType != null) {
          retval.setMediaType(mediaType);
        }
        if (text != null) {
          retval.setText(text);
        }
  
        return retval;
      }
    }
  }