/*
  This software was produced for the U. S. Government
  under Contract No. W15P7T-11-C-F600, and is
  subject to the Rights in Noncommercial Computer Software
  and Noncommercial Computer Software Documentation
  Clause 252.227-7014 (JUN 1995)

  Copyright 2013 The MITRE Corporation. All Rights Reserved.

  Licensed 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.opensextant.solrtexttagger;

import org.apache.lucene.document.Field;
import org.apache.solr.SolrTestCaseJ4;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.StreamingResponseCallback;
import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
import org.apache.solr.client.solrj.request.QueryRequest;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.params.ModifiableSolrParams;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.ContentStream;
import org.apache.solr.common.util.ContentStreamBase;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;

import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.BiFunction;

/**
 * Tests that we can skip serialization of the documents when embedding
 * Solr.
 *
 * @author David Smiley - [email protected]
 */
public class EmbeddedSolrNoSerializeTest extends SolrTestCaseJ4 {

  static EmbeddedSolrServer solrServer;

  @BeforeClass
  public static void init() throws Exception {
    initCore("solrconfig.xml", "schema.xml");
    solrServer = new EmbeddedSolrServer(h.getCoreContainer(), "collection1");
    //we don't need to close the EmbeddedSolrServer because SolrTestCaseJ4 closes the core
  }

  @Before
  public void setUp() throws Exception {
    super.setUp();
    clearIndex();
    assertU(adoc("id", "9999", "name", "Boston"));
    assertU(commit());
  }

  @Test
  public void testTag() throws SolrServerException, IOException {
    ModifiableSolrParams params = params();
    String input = "foo boston bar";//just one tag;
    QueryRequest req = new SolrTaggerRequest(params, input);
    req.setPath("/tag");

    QueryResponse rsp = req.process(solrServer);
    SolrDocumentList results= (SolrDocumentList) rsp.getResponse().get("response");
    assertNotNull(rsp.getResponse().get("tags"));
    assertNotNull(results.get(0));
  }

  @SuppressWarnings("serial")
  public static class SolrTaggerRequest extends QueryRequest {

    private final String input;

    public SolrTaggerRequest(SolrParams p, String input) {
      super(p, METHOD.POST);
      this.input = input;
    }

    // Deprecated in 7.2 but should live on until 8.x
    @SuppressWarnings("deprecation")
    @Override
    public Collection<ContentStream> getContentStreams() {
      return Collections.singleton(new ContentStreamBase.StringStream(input));
    }

    // As of 7.2.  But won't work until: https://issues.apache.org/jira/browse/SOLR-12142
//    @Override
//    public RequestWriter.ContentWriter getContentWriter(String expectedType) {
//      return new RequestWriter.StringPayloadContentWriter(input, "text/plain; charset=UTF8");
//    }
  }

  @Test
  public void testSearch() throws Exception {
    QueryResponse rsp = solrServer.query(params("q", "name:Boston"));
    assertNotNull(rsp.getResults().get(0));
  }

  @Test
  public void testAssertTagStreamingWithSolrTaggerRequest() throws Exception {
    doTestAssertTagStreaming(SolrTaggerRequest::new);
  }

  @Test @Ignore("As of Solr 7, stream.body is disabled by default for security ") // DWS: dubious, IMO
  // and it can't be enabled with EmbeddedSolrServer until SOLR-12126
  public void testAssertTagStreamingWithStreamBodyParam() throws Exception {
    doTestAssertTagStreaming((params, input) -> {
      params.set("stream.body", input);
      return new QueryRequest(params);
    });
  }

  public void doTestAssertTagStreaming(BiFunction<ModifiableSolrParams,String,QueryRequest> newQueryRequest) throws IOException, SolrServerException {
    ModifiableSolrParams params = params();
    String input = "foo boston bar";//just one tag;
    QueryRequest req = newQueryRequest.apply(params, input);
    req.setPath("/tag");

    final AtomicReference<SolrDocument> refDoc = new AtomicReference<>();
    req.setStreamingResponseCallback(new StreamingResponseCallback() {
      @Override
      public void streamSolrDocument(SolrDocument doc) {
        refDoc.set(doc);
      }

      @Override
      public void streamDocListInfo(long numFound, long start, Float maxScore) {

      }
    });
    QueryResponse rsp = req.process(solrServer);
    assertNotNull(rsp.getResponse().get("tags"));
    assertNotNull(refDoc.get());
    assertEquals("Boston", ((Field)refDoc.get().getFieldValue("name")).stringValue());
  }
}