/**
    * 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.decima.xml.testing;
  
  import gov.nist.secauto.decima.core.requirement.AbstractBaseRequirement;
  import gov.nist.secauto.decima.core.requirement.AbstractRequirement;
  import gov.nist.secauto.decima.core.requirement.BaseRequirement;
  import gov.nist.secauto.decima.core.requirement.DerivedRequirement;
  import gov.nist.secauto.decima.core.requirement.RequirementType;
  import gov.nist.secauto.decima.core.requirement.RequirementsManager;
  import gov.nist.secauto.decima.core.requirement.SpecificationReference;
  
  import java.net.URI;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  public class StubRequirementsManager implements RequirementsManager {
    private static final String STUB_STATEMENT = "something";
  
    public Map<String, BaseRequirement> baseRequirements;
  
    /**
     * Construct a new requirements manager that does not require a requirements definition.
     * 
     * @param testedDerivedRequirements
     *          the set of derived requirements that have been reported during testing
     */
    public StubRequirementsManager(Set<String> testedDerivedRequirements) {
      this.baseRequirements = new HashMap<>();
      for (String derivedReqId : testedDerivedRequirements) {
        StubBaseRequirement base = new StubBaseRequirement(derivedReqId);
        baseRequirements.put(derivedReqId, base);
        base.addDerivedRequirement(new StubDerivedRequirement(derivedReqId, base));
      }
    }
  
    @Override
    public List<URI> getRequirementDefinitions() {
      return Collections.emptyList();
    }
  
    @Override
    public BaseRequirement getBaseRequirementById(String id) {
      return baseRequirements.get(id);
    }
  
    @Override
    public Collection<BaseRequirement> getBaseRequirements() {
      return baseRequirements.values();
    }
  
    @Override
    public DerivedRequirement getDerivedRequirementById(String id) {
      BaseRequirement base = getBaseRequirementById(id);
      return base == null ? null : base.getDerivedRequirementById(id);
    }
  
    private static class StubBaseRequirement
        extends AbstractBaseRequirement {
  
      public StubBaseRequirement(String id) {
        super(id, STUB_STATEMENT);
      }
  
      @Override
      public SpecificationReference getSpecificationReference() {
        throw new UnsupportedOperationException();
      }
  
    }
  
   private static class StubDerivedRequirement
       extends AbstractRequirement
       implements DerivedRequirement {
     private final BaseRequirement baseRequirement;
 
     public StubDerivedRequirement(String id, BaseRequirement base) {
       super(id, STUB_STATEMENT);
       this.baseRequirement = base;
     }
 
     @Override
     public BaseRequirement getBaseRequirement() {
       return baseRequirement;
     }
 
     @Override
     public RequirementType getType() {
       return RequirementType.MUST;
     }
 
     @Override
     public String getMessageText(String... args) {
       return "message";
     }
 
     @Override
     public boolean isConditional() {
       // never conditional, since no requirements XML is used. This simplifies unit test writing.
       return false;
     }
   }
 }