package com.baeldung.elasticsearch;

import com.alibaba.fastjson.JSON;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.node.Node;
import org.elasticsearch.search.SearchHit;
import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

import static org.elasticsearch.node.NodeBuilder.nodeBuilder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class ElasticSearchManualTest {
    private List<Person> listOfPersons = new ArrayList<>();
    private Client client = null;

    @Before
    public void setUp() {
        Person person1 = new Person(10, "John Doe", new Date());
        Person person2 = new Person(25, "Janette Doe", new Date());
        listOfPersons.add(person1);
        listOfPersons.add(person2);
        Node node = nodeBuilder()
          .clusterName("elasticsearch")
          .client(true)
          .node();
        client = node.client();
    }

    @Test
    public void givenJsonString_whenJavaObject_thenIndexDocument() {
        String jsonObject = "{\"age\":20,\"dateOfBirth\":1471466076564,\"fullName\":\"John Doe\"}";
        IndexResponse response = client
          .prepareIndex("people", "Doe")
          .setSource(jsonObject)
          .get();
        String index = response.getIndex();
        String type = response.getType();
        assertTrue(response.isCreated());
        assertEquals(index, "people");
        assertEquals(type, "Doe");
    }

    @Test
    public void givenDocumentId_whenJavaObject_thenDeleteDocument() {
        String jsonObject = "{\"age\":10,\"dateOfBirth\":1471455886564,\"fullName\":\"Johan Doe\"}";
        IndexResponse response = client
          .prepareIndex("people", "Doe")
          .setSource(jsonObject)
          .get();
        String id = response.getId();
        DeleteResponse deleteResponse = client
          .prepareDelete("people", "Doe", id)
          .get();
        assertTrue(deleteResponse.isFound());
    }

    @Test
    public void givenSearchRequest_whenMatchAll_thenReturnAllResults() {
        SearchResponse response = client
          .prepareSearch()
          .execute()
          .actionGet();
        SearchHit[] searchHits = response
          .getHits()
          .getHits();
        List<Person> results = Arrays.stream(searchHits)
          .map(hit -> JSON.parseObject(hit.getSourceAsString(), Person.class))
          .collect(Collectors.toList());
    }

    @Test
    public void givenSearchParameters_thenReturnResults() {
        SearchResponse response = client
          .prepareSearch()
          .setTypes()
          .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
          .setPostFilter(QueryBuilders
            .rangeQuery("age")
            .from(5)
            .to(15))
          .setFrom(0)
          .setSize(60)
          .setExplain(true)
          .execute()
          .actionGet();

        SearchResponse response2 = client
          .prepareSearch()
          .setTypes()
          .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
          .setPostFilter(QueryBuilders.simpleQueryStringQuery("+John -Doe OR Janette"))
          .setFrom(0)
          .setSize(60)
          .setExplain(true)
          .execute()
          .actionGet();

        SearchResponse response3 = client
          .prepareSearch()
          .setTypes()
          .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
          .setPostFilter(QueryBuilders.matchQuery("John", "Name*"))
          .setFrom(0)
          .setSize(60)
          .setExplain(true)
          .execute()
          .actionGet();
        response2.getHits();
        response3.getHits();

        final List<Person> results = Arrays.stream(response.getHits().getHits())
          .map(hit -> JSON.parseObject(hit.getSourceAsString(), Person.class))
          .collect(Collectors.toList());
    }

    @Test
    public void givenContentBuilder_whenHelpers_thanIndexJson() throws IOException {
        XContentBuilder builder = XContentFactory
          .jsonBuilder()
          .startObject()
          .field("fullName", "Test")
          .field("salary", "11500")
          .field("age", "10")
          .endObject();
        IndexResponse response = client
          .prepareIndex("people", "Doe")
          .setSource(builder)
          .get();
        assertTrue(response.isCreated());
    }
}