/*
    * 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.writer;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.nio.charset.StandardCharsets;
  
  import org.apache.any23.extractor.ExtractionContext;
  import org.eclipse.rdf4j.model.IRI;
  import org.eclipse.rdf4j.model.impl.SimpleValueFactory;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Test case for {@link JSONLDWriter} and deprecated JSONWriter classes.
   *
   * @author Michele Mostarda (mostarda@fbk.eu)
   * @author Julio Caguano
   */
  public class JSONWriterTest {
  
      @Test
      @Deprecated
      public void testJSONWriting() throws TripleHandlerException, IOException {
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          writeContentComplicated(new JSONWriter(baos));
  
          final String expected = "{\n" + "  \"quads\" : [ [ {\n" + "    \"type\" : \"bnode\",\n"
                  + "    \"value\" : \"bn1\"\n" + "  }, \"http://pred/1\", {\n" + "    \"type\" : \"uri\",\n"
                  + "    \"value\" : \"http://value/1\"\n" + "  }, \"http://graph/1\" ], [ {\n"
                  + "    \"type\" : \"uri\",\n" + "    \"value\" : \"http://sub/2\"\n" + "  }, \"http://pred/2\", {\n"
                  + "    \"type\" : \"literal\",\n" + "    \"value\" : \"language literal\",\n"
                  + "    \"lang\" : \"en\",\n"
                  + "    \"datatype\" : \"http://www.w3.org/1999/02/22-rdf-syntax-ns#langString\"\n"
                  + "  }, \"http://graph/2\" ], [ {\n" + "    \"type\" : \"uri\",\n"
                  + "    \"value\" : \"http://sub/3\"\n" + "  }, \"http://pred/3\", {\n" + "    \"type\" : \"literal\",\n"
                  + "    \"value\" : \"123\",\n" + "    \"lang\" : null,\n" + "    \"datatype\" : \"http://datatype\"\n"
                  + "  }, null ] ]\n" + "}";
          Assert.assertEquals(expected, baos.toString(StandardCharsets.UTF_8));
  
          baos.reset();
          writeContentSimple(new JSONWriter(baos));
          Assert.assertEquals(expected, baos.toString(StandardCharsets.UTF_8));
      }
  
      @Test
      public void testJSONLDWriting() throws TripleHandlerException {
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          writeContentComplicated(new JSONLDWriter(baos));
          final String expected = "[ {\n" + "  \"@graph\" : [ {\n" + "    \"@id\" : \"http://sub/3\",\n"
                  + "    \"http://pred/3\" : [ {\n" + "      \"@type\" : \"http://datatype\",\n"
                  + "      \"@value\" : \"123\"\n" + "    } ]\n" + "  } ],\n" + "  \"@id\" : \"http://any23.org/tmp/\"\n"
                  + "}, {\n" + "  \"@graph\" : [ {\n" + "    \"@id\" : \"_:bn1\",\n" + "    \"http://pred/1\" : [ {\n"
                  + "      \"@id\" : \"http://value/1\"\n" + "    } ]\n" + "  } ],\n" + "  \"@id\" : \"http://graph/1\"\n"
                  + "}, {\n" + "  \"@graph\" : [ {\n" + "    \"@id\" : \"http://sub/2\",\n"
                  + "    \"http://pred/2\" : [ {\n" + "      \"@language\" : \"en\",\n"
                  + "      \"@value\" : \"language literal\"\n" + "    } ]\n" + "  } ],\n"
                  + "  \"@id\" : \"http://graph/2\"\n" + "} ]";
          Assert.assertEquals(expected, baos.toString(StandardCharsets.UTF_8));
  
          baos.reset();
          writeContentSimple(new JSONLDWriter(baos));
          Assert.assertEquals(expected, baos.toString(StandardCharsets.UTF_8));
      }
  
      private void writeContentSimple(TripleWriter writer) throws TripleHandlerException {
          writer.writeTriple(SimpleValueFactory.getInstance().createBNode("bn1"),
                  SimpleValueFactory.getInstance().createIRI("http://pred/1"),
                  SimpleValueFactory.getInstance().createIRI("http://value/1"),
                  SimpleValueFactory.getInstance().createIRI("http://graph/1"));
  
          writer.writeTriple(SimpleValueFactory.getInstance().createIRI("http://sub/2"),
                  SimpleValueFactory.getInstance().createIRI("http://pred/2"),
                  SimpleValueFactory.getInstance().createLiteral("language literal", "en"),
                  SimpleValueFactory.getInstance().createIRI("http://graph/2"));
  
          writer.writeTriple(SimpleValueFactory.getInstance().createIRI("http://sub/3"),
                  SimpleValueFactory.getInstance().createIRI("http://pred/3"),
                  SimpleValueFactory.getInstance().createLiteral("123",
                          SimpleValueFactory.getInstance().createIRI("http://datatype")),
                  writer instanceof JSONLDWriter ? SimpleValueFactory.getInstance().createIRI("http://any23.org/tmp/")
                          : null);
  
          writer.close();
 
     }
 
     private void writeContentComplicated(TripleHandler writer) throws TripleHandlerException {
         // creating a fake document uri in order to write triples is terrible.
         // see improved solution in "writeContentSimple"!
         final IRI documentIRI = SimpleValueFactory.getInstance().createIRI("http://fake/uri");
         writer.startDocument(documentIRI);
         writer.receiveTriple(SimpleValueFactory.getInstance().createBNode("bn1"),
                 SimpleValueFactory.getInstance().createIRI("http://pred/1"),
                 SimpleValueFactory.getInstance().createIRI("http://value/1"),
                 SimpleValueFactory.getInstance().createIRI("http://graph/1"), null);
         writer.receiveTriple(SimpleValueFactory.getInstance().createIRI("http://sub/2"),
                 SimpleValueFactory.getInstance().createIRI("http://pred/2"),
                 SimpleValueFactory.getInstance().createLiteral("language literal", "en"),
                 SimpleValueFactory.getInstance().createIRI("http://graph/2"), null);
         if (!(writer instanceof JSONLDWriter)) {
             writer.receiveTriple(SimpleValueFactory.getInstance().createIRI("http://sub/3"),
                     SimpleValueFactory.getInstance().createIRI("http://pred/3"), SimpleValueFactory.getInstance()
                             .createLiteral("123", SimpleValueFactory.getInstance().createIRI("http://datatype")),
                     null, null);
         } else {
             // creating a fake extraction context in order to write triples is terrible.
             // see improved solution in "writeContentSimple"!
             ExtractionContext extractionContext = new ExtractionContext("rdf-nq",
                     SimpleValueFactory.getInstance().createIRI("http://any23.org/tmp/"));
             writer.receiveTriple(SimpleValueFactory.getInstance().createIRI("http://sub/3"),
                     SimpleValueFactory.getInstance().createIRI("http://pred/3"), SimpleValueFactory.getInstance()
                             .createLiteral("123", SimpleValueFactory.getInstance().createIRI("http://datatype")),
                     null, extractionContext);
         }
         writer.endDocument(documentIRI);
         writer.close();
     }
 }