/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package io.opentelemetry.javaagent.instrumentation.elasticsearch.rest.v6_4;

import static io.opentelemetry.sdk.testing.assertj.OpenTelemetryAssertions.equalTo;

import com.fasterxml.jackson.databind.ObjectMapper;
import io.opentelemetry.api.trace.SpanKind;
import io.opentelemetry.instrumentation.testing.junit.AgentInstrumentationExtension;
import io.opentelemetry.instrumentation.testing.junit.InstrumentationExtension;
import io.opentelemetry.semconv.HttpAttributes;
import io.opentelemetry.semconv.NetworkAttributes;
import io.opentelemetry.semconv.ServerAttributes;
import io.opentelemetry.semconv.UrlAttributes;
import io.opentelemetry.semconv.incubating.DbIncubatingAttributes;
import java.io.IOException;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import org.apache.http.HttpHost;
import org.elasticsearch.client.Response;
import org.elasticsearch.client.ResponseListener;
import org.elasticsearch.client.RestClient;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;
import org.testcontainers.elasticsearch.ElasticsearchContainer;

class ElasticsearchRest6Test {
  @RegisterExtension
  static final InstrumentationExtension testing = AgentInstrumentationExtension.create();

  static ElasticsearchContainer elasticsearch;

  static HttpHost httpHost;

  static RestClient client;

  static ObjectMapper objectMapper;

  @BeforeAll
  static void setUp() {
    elasticsearch =
        new ElasticsearchContainer("docker.elastic.co/elasticsearch/elasticsearch-oss:6.8.16");
    // limit memory usage
    elasticsearch.withEnv("ES_JAVA_OPTS", "-Xmx256m -Xms256m");
    elasticsearch.start();

    httpHost = HttpHost.create(elasticsearch.getHttpHostAddress());
    client =
        RestClient.builder(httpHost)
            .setMaxRetryTimeoutMillis(Integer.MAX_VALUE)
            .setRequestConfigCallback(
                builder ->
                    builder
                        .setConnectTimeout(Integer.MAX_VALUE)
                        .setSocketTimeout(Integer.MAX_VALUE))
            .build();

    objectMapper = new ObjectMapper();
  }

  @AfterAll
  static void cleanUp() {
    elasticsearch.stop();
  }

  @Test
  @SuppressWarnings({"deprecation", "rawtypes"})
  // ignore deprecation interface
  public void elasticsearchStatus() throws IOException {

    Response response = client.performRequest("GET", "_cluster/health");
    Map result = objectMapper.readValue(response.getEntity().getContent(), Map.class);

    Assertions.assertEquals(result.get("status"), "green");

    testing.waitAndAssertTraces(
        trace -> {
          trace.hasSpansSatisfyingExactly(
              span -> {
                span.hasName("GET")
                    .hasKind(SpanKind.CLIENT)
                    .hasNoParent()
                    .hasAttributesSatisfyingExactly(
                        equalTo(DbIncubatingAttributes.DB_SYSTEM, "elasticsearch"),
                        equalTo(HttpAttributes.HTTP_REQUEST_METHOD, "GET"),
                        equalTo(ServerAttributes.SERVER_ADDRESS, httpHost.getHostName()),
                        equalTo(ServerAttributes.SERVER_PORT, httpHost.getPort()),
                        equalTo(UrlAttributes.URL_FULL, httpHost.toURI() + "/_cluster/health"));
              },
              span -> {
                span.hasName("GET")
                    .hasKind(SpanKind.CLIENT)
                    .hasParent(trace.getSpan(0))
                    .hasAttributesSatisfyingExactly(
                        equalTo(ServerAttributes.SERVER_ADDRESS, httpHost.getHostName()),
                        equalTo(ServerAttributes.SERVER_PORT, httpHost.getPort()),
                        equalTo(HttpAttributes.HTTP_REQUEST_METHOD, "GET"),
                        equalTo(NetworkAttributes.NETWORK_PROTOCOL_VERSION, "1.1"),
                        equalTo(UrlAttributes.URL_FULL, httpHost.toURI() + "/_cluster/health"),
                        equalTo(HttpAttributes.HTTP_RESPONSE_STATUS_CODE, 200L));
              });
        });
  }

  @Test
  @SuppressWarnings({"deprecation", "rawtypes"})
  // ignore deprecation interface
  public void elasticsearchStatusAsync() throws Exception {
    Response[] requestResponse = {null};
    Exception[] exception = {null};
    CountDownLatch countDownLatch = new CountDownLatch(1);
    ResponseListener responseListener =
        new ResponseListener() {
          @Override
          public void onSuccess(Response response) {
            testing.runWithSpan(
                "callback",
                () -> {
                  requestResponse[0] = response;
                  countDownLatch.countDown();
                });
          }

          @Override
          public void onFailure(Exception e) {
            testing.runWithSpan(
                "callback",
                () -> {
                  exception[0] = e;
                  countDownLatch.countDown();
                });
          }
        };
    testing.runWithSpan(
        "parent",
        () -> {
          client.performRequestAsync("GET", "_cluster/health", responseListener);
        });
    countDownLatch.await();

    if (exception[0] != null) {
      throw exception[0];
    }
    Map result = objectMapper.readValue(requestResponse[0].getEntity().getContent(), Map.class);

    Assertions.assertEquals(result.get("status"), "green");

    testing.waitAndAssertTraces(
        trace -> {
          trace.hasSpansSatisfyingExactly(
              span -> {
                span.hasName("parent").hasKind(SpanKind.INTERNAL).hasNoParent();
              },
              span -> {
                span.hasName("GET")
                    .hasKind(SpanKind.CLIENT)
                    .hasParent(trace.getSpan(0))
                    .hasAttributesSatisfyingExactly(
                        equalTo(DbIncubatingAttributes.DB_SYSTEM, "elasticsearch"),
                        equalTo(HttpAttributes.HTTP_REQUEST_METHOD, "GET"),
                        equalTo(ServerAttributes.SERVER_ADDRESS, httpHost.getHostName()),
                        equalTo(ServerAttributes.SERVER_PORT, httpHost.getPort()),
                        equalTo(UrlAttributes.URL_FULL, httpHost.toURI() + "/_cluster/health"));
              },
              span -> {
                span.hasName("GET")
                    .hasKind(SpanKind.CLIENT)
                    .hasParent(trace.getSpan(1))
                    .hasAttributesSatisfyingExactly(
                        equalTo(ServerAttributes.SERVER_ADDRESS, httpHost.getHostName()),
                        equalTo(ServerAttributes.SERVER_PORT, httpHost.getPort()),
                        equalTo(HttpAttributes.HTTP_REQUEST_METHOD, "GET"),
                        equalTo(NetworkAttributes.NETWORK_PROTOCOL_VERSION, "1.1"),
                        equalTo(UrlAttributes.URL_FULL, httpHost.toURI() + "/_cluster/health"),
                        equalTo(HttpAttributes.HTTP_RESPONSE_STATUS_CODE, 200));
              },
              span -> {
                span.hasName("callback").hasKind(SpanKind.INTERNAL).hasParent(trace.getSpan(0));
              });
        });
  }
}
