/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.any23.extractor.calendar;
  
  import org.apache.any23.extractor.html.AbstractExtractorTestCase;
  import org.eclipse.rdf4j.model.BNode;
  import org.eclipse.rdf4j.model.Statement;
  import org.eclipse.rdf4j.repository.RepositoryException;
  import org.eclipse.rdf4j.rio.RDFFormat;
  import org.eclipse.rdf4j.rio.RDFHandler;
  import org.eclipse.rdf4j.rio.RDFHandlerException;
  import org.eclipse.rdf4j.rio.RDFParseException;
  import org.eclipse.rdf4j.rio.RDFParser;
  import org.eclipse.rdf4j.rio.Rio;
  import org.junit.Assert;
  
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.nio.charset.StandardCharsets;
  import java.util.ArrayList;
  import java.util.List;
  
  abstract class BaseCalendarExtractorTest extends AbstractExtractorTestCase {
  
      abstract String filePrefix();
  
      protected void extractAndVerifyAgainstNQuads(String actual, String expected)
              throws RepositoryException, RDFHandlerException, IOException, RDFParseException {
          String filePrefix = filePrefix();
          assertExtract(filePrefix + actual);
          assertModelNotEmpty();
          List<Statement> expectedStatements = loadResultStatement(filePrefix + expected);
          int actualStmtSize = getStatementsSize(null, null, null);
          Assert.assertEquals(expectedStatements.size(), actualStmtSize);
          for (Statement statement : expectedStatements) {
              assertContains(statement.getSubject() instanceof BNode ? null : statement.getSubject(),
                      statement.getPredicate(), statement.getObject() instanceof BNode ? null : statement.getObject());
          }
      }
  
      private List<Statement> loadResultStatement(String resultFilePath)
              throws RDFHandlerException, IOException, RDFParseException {
          RDFParser nQuadsParser = Rio.createParser(RDFFormat.NQUADS);
          TestRDFHandler rdfHandler = new TestRDFHandler();
          nQuadsParser.setRDFHandler(rdfHandler);
          File file = copyResourceToTempFile(resultFilePath);
          nQuadsParser.parse(new FileReader(file, StandardCharsets.UTF_8), baseIRI.toString());
          return rdfHandler.getStatements();
      }
  
      private static class TestRDFHandler implements RDFHandler {
  
          private final List<Statement> statements = new ArrayList<Statement>();
  
          protected List<Statement> getStatements() {
              return statements;
          }
  
          public void startRDF() throws RDFHandlerException {
          }
  
          public void endRDF() throws RDFHandlerException {
          }
  
          public void handleNamespace(String s, String s1) throws RDFHandlerException {
              throw new UnsupportedOperationException();
          }
  
          public void handleStatement(Statement statement) throws RDFHandlerException {
              statements.add(statement);
          }
  
          public void handleComment(String s) throws RDFHandlerException {
              throw new UnsupportedOperationException();
          }
      }
  }