/*
    * SPDX-FileCopyrightText: none
    * SPDX-License-Identifier: CC0-1.0
    */
   
   package gov.nist.secauto.oscal.lib.profile.resolver.policy;
   
   import gov.nist.secauto.metaschema.core.metapath.format.IPathFormatter;
   import gov.nist.secauto.metaschema.core.metapath.item.node.IModelNodeItem;
  import gov.nist.secauto.metaschema.core.util.CollectionUtil;
  import gov.nist.secauto.metaschema.core.util.CustomCollectors;
  import gov.nist.secauto.oscal.lib.model.Link;
  import gov.nist.secauto.oscal.lib.profile.resolver.support.IEntityItem;
  
  import org.apache.logging.log4j.LogManager;
  import org.apache.logging.log4j.Logger;
  
  import java.net.URI;
  import java.util.List;
  import java.util.Locale;
  
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public class LinkReferencePolicy
      extends AbstractMultiItemTypeReferencePolicy<Link> {
    private static final Logger LOGGER = LogManager.getLogger(LinkReferencePolicy.class);
  
    @SuppressWarnings("null")
    @NonNull
    public static LinkReferencePolicy create(@NonNull IEntityItem.ItemType itemType) {
      return create(List.of(itemType));
    }
  
    @NonNull
    public static LinkReferencePolicy create(@NonNull List<IEntityItem.ItemType> itemTypes) {
      return new LinkReferencePolicy(CollectionUtil.requireNonEmpty(itemTypes, "itemTypes"));
    }
  
    public LinkReferencePolicy(@NonNull List<IEntityItem.ItemType> itemTypes) {
      super(IIdentifierParser.FRAGMENT_PARSER, itemTypes);
    }
  
    @Override
    public String getReferenceText(@NonNull Link link) {
      return link.getHref().toString();
    }
  
    @Override
    public void setReferenceText(@NonNull Link link, @NonNull String newValue) {
      link.setHref(URI.create(newValue));
    }
  
    @Override
    protected void handleUnselected(
        @NonNull IModelNodeItem<?, ?> contextItem,
        @NonNull Link link,
        @NonNull IEntityItem item,
        @NonNull ReferenceCountingVisitor.Context visitorContext) {
      URI linkHref = link.getHref();
      URI sourceUri = item.getSource();
  
      URI resolved = sourceUri.resolve(linkHref);
      if (LOGGER.isTraceEnabled()) {
        LOGGER.atTrace().log("At path '{}', remapping orphaned URI '{}' to '{}'",
            contextItem.toPath(IPathFormatter.METAPATH_PATH_FORMATER),
            linkHref.toString(),
            resolved.toString());
      }
      link.setHref(resolved);
    }
  
    @Override
    protected boolean handleIndexMiss(
        @NonNull IModelNodeItem<?, ?> contextItem,
        @NonNull Link link,
        @NonNull List<IEntityItem.ItemType> itemTypes,
        @NonNull String identifier,
        @NonNull ReferenceCountingVisitor.Context visitorContext) {
      if (LOGGER.isWarnEnabled()) {
        LOGGER.atWarn().log(
            "The link at '{}' with rel '{}' should reference a {} identified by '{}'."
                + " The index did not contain the identifier.",
            contextItem.toPath(IPathFormatter.METAPATH_PATH_FORMATER),
            link.getRel(),
            itemTypes.stream()
                .map(en -> en.name().toLowerCase(Locale.ROOT))
                .collect(CustomCollectors.joiningWithOxfordComma("or")),
            identifier);
      }
      return true;
    }
  
    @Override
    protected boolean handleIdentifierNonMatch(
        @NonNull IModelNodeItem<?, ?> contextItem,
        @NonNull Link reference,
        @NonNull ReferenceCountingVisitor.Context visitorContext) {
      if (LOGGER.isDebugEnabled()) {
        LOGGER.atDebug().log("Ignoring URI '{}' at '{}'",
           reference.getHref().toString(),
           contextItem.toPath(IPathFormatter.METAPATH_PATH_FORMATER));
     }
 
     return true;
   }
 }