/*
    * Portions of this software was developed by employees of the National Institute
    * of Standards and Technology (NIST), an agency of the Federal Government and is
    * being made available as a public service. Pursuant to title 17 United States
    * Code Section 105, works of NIST employees are not subject to copyright
    * protection in the United States. This software may be subject to foreign
    * copyright. Permission in the United States and in foreign countries, to the
    * extent that NIST may hold copyright, to use, copy, modify, create derivative
    * works, and distribute this software and its documentation without fee is hereby
   * granted on a non-exclusive basis, provided that this notice and disclaimer
   * of warranty appears in all copies.
   *
   * THE SOFTWARE IS PROVIDED 'AS IS' WITHOUT ANY WARRANTY OF ANY KIND, EITHER
   * EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY
   * THAT THE SOFTWARE WILL CONFORM TO SPECIFICATIONS, ANY IMPLIED WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND FREEDOM FROM
   * INFRINGEMENT, AND ANY WARRANTY THAT THE DOCUMENTATION WILL CONFORM TO THE
   * SOFTWARE, OR ANY WARRANTY THAT THE SOFTWARE WILL BE ERROR FREE.  IN NO EVENT
   * SHALL NIST BE LIABLE FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO, DIRECT,
   * INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF, RESULTING FROM,
   * OR IN ANY WAY CONNECTED WITH THIS SOFTWARE, WHETHER OR NOT BASED UPON WARRANTY,
   * CONTRACT, TORT, OR OTHERWISE, WHETHER OR NOT INJURY WAS SUSTAINED BY PERSONS OR
   * PROPERTY OR OTHERWISE, AND WHETHER OR NOT LOSS WAS SUSTAINED FROM, OR AROSE OUT
   * OF THE RESULTS OF, OR USE OF, THE SOFTWARE OR SERVICES PROVIDED HEREUNDER.
   */
  
  package gov.nist.secauto.metaschema.schemagen.json.schema;
  
  import com.fasterxml.jackson.databind.node.ArrayNode;
  import com.fasterxml.jackson.databind.node.JsonNodeFactory;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  import gov.nist.secauto.metaschema.core.model.IValuedDefinition;
  import gov.nist.secauto.metaschema.core.model.constraint.IAllowedValue;
  import gov.nist.secauto.metaschema.core.util.CollectionUtil;
  import gov.nist.secauto.metaschema.core.util.ObjectUtils;
  import gov.nist.secauto.metaschema.schemagen.AbstractGenerationState.AllowedValueCollection;
  import gov.nist.secauto.metaschema.schemagen.json.impl.JsonGenerationState;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  import java.math.MathContext;
  
  import edu.umd.cs.findbugs.annotations.NonNull;
  
  public class DataTypeRestrictionDefinitionJsonSchema
      extends AbstractDefineableJsonSchema {
    @NonNull
    private final IValuedDefinition definition;
    @NonNull
    private final AllowedValueCollection allowedValuesCollection;
  
    public DataTypeRestrictionDefinitionJsonSchema(
        @NonNull IValuedDefinition definition,
        @NonNull AllowedValueCollection allowedValuesCollection) {
      this.definition = definition;
      CollectionUtil.requireNonEmpty(allowedValuesCollection.getValues());
      this.allowedValuesCollection = allowedValuesCollection;
    }
  
    @Override
    public void resolveSubSchemas(JsonGenerationState state) {
      // do nothing
    }
  
    @NonNull
    protected IValuedDefinition getDefinition() {
      return definition;
    }
  
    @NonNull
    protected AllowedValueCollection getAllowedValuesCollection() {
      return allowedValuesCollection;
    }
  
    @Override
    public boolean isInline(JsonGenerationState state) {
      return state.isInline(getDefinition());
    }
  
    @Override
    protected String generateDefinitionName(JsonGenerationState state) {
      return state.getTypeNameForDefinition(definition, "Value");
    }
  
    @Override
    public void generateSchema(JsonGenerationState state, ObjectNode obj) {
      // generate a restriction on the built-in type for the enumerated values
      ArrayNode enumArray = JsonNodeFactory.instance.arrayNode();
  
      AllowedValueCollection allowedValuesCollection = getAllowedValuesCollection();
      for (IAllowedValue allowedValue : allowedValuesCollection.getValues()) {
        switch (getDefinition().getJavaTypeAdapter().getJsonRawType()) {
        case STRING:
          enumArray.add(allowedValue.getValue());
          break;
        case BOOLEAN:
          enumArray.add(Boolean.parseBoolean(allowedValue.getValue()));
          break;
       case INTEGER:
         enumArray.add(new BigInteger(allowedValue.getValue())); // NOPMD unavoidable
         break;
       case NUMBER:
         enumArray.add(new BigDecimal(allowedValue.getValue(), MathContext.DECIMAL64)); // NOPMD unavoidable
         break;
       default:
         throw new UnsupportedOperationException(getDefinition().getJavaTypeAdapter().getJsonRawType().toString());
       }
     }
     // get schema for the built-in type
     IJsonSchema dataTypeSchema = state.getSchema(getDefinition().getJavaTypeAdapter());
 
     // if other values are allowed, we need to make a union of the restriction type
     // and the base
     // built-in type
     ArrayNode ofArray;
     if (allowedValuesCollection.isClosed()) {
       // this restriction is allOf, since both must match
       ofArray = obj.putArray("allOf");
     } else {
       // this restriction is anyOf, since any can match
       ofArray = obj.putArray("anyOf");
     }
 
     // add the data type reference
     dataTypeSchema.generateSchemaOrRef(state, ObjectUtils.notNull(ofArray.addObject()));
     // add the enumeration
     ofArray.addObject()
         .set("enum", enumArray);
   }
 }