/*
 * Copyright 2015-2019 The OpenZipkin Authors
 *
 * 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 zipkin2.server.internal;

import brave.Tracing;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.prometheus.PrometheusConfig;
import io.micrometer.prometheus.PrometheusMeterRegistry;
import org.junit.After;
import org.junit.Test;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
import org.springframework.boot.convert.ApplicationConversionService;
import org.springframework.boot.test.util.TestPropertyValues;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.ConversionService;
import zipkin2.server.internal.brave.ZipkinSelfTracingConfiguration;
import zipkin2.storage.StorageComponent;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;

public class ZipkinHttpConfigurationTest {
  AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();

  @After public void close() {
    context.close();
  }

  @Test public void httpCollector_enabledByDefault() {
    registerBaseConfig(context);
    context.register(ZipkinHttpCollector.class);
    context.refresh();

    assertThat(context.getBean(ZipkinHttpCollector.class)).isNotNull();
  }

  @Test(expected = NoSuchBeanDefinitionException.class)
  public void httpCollector_canDisable() {
    TestPropertyValues.of("zipkin.collector.http.enabled:false").applyTo(context);
    registerBaseConfig(context);
    context.register(ZipkinHttpCollector.class);
    context.refresh();

    context.getBean(ZipkinHttpCollector.class);
  }

  @Test public void query_enabledByDefault() {
    registerBaseConfig(context);
    context.register(ZipkinQueryApiV2.class);
    context.refresh();

    assertThat(context.getBean(ZipkinQueryApiV2.class)).isNotNull();
  }

  @Test public void query_canDisable() {
    TestPropertyValues.of("zipkin.query.enabled:false").applyTo(context);
    registerBaseConfig(context);
    context.register(ZipkinQueryApiV2.class);
    context.refresh();

    assertThatThrownBy(() -> context.getBean(ZipkinQueryApiV2.class))
      .isInstanceOf(NoSuchBeanDefinitionException.class);
  }

  @Test public void selfTracing_canEnable() {
    TestPropertyValues.of("zipkin.self-tracing.enabled:true").applyTo(context);
    registerBaseConfig(context);
    context.register(ZipkinSelfTracingConfiguration.class);
    context.refresh();

    context.getBean(Tracing.class).close();
  }

  @Test public void search_canDisable() {
    TestPropertyValues.of("zipkin.storage.search-enabled:false").applyTo(context);
    registerBaseConfig(context);
    context.refresh();

    StorageComponent v2Storage = context.getBean(StorageComponent.class);
    assertThat(v2Storage)
      .extracting("searchEnabled")
      .isEqualTo(false);
  }

  @Configuration
  public static class Config {
    @Bean MeterRegistry registry() {
      return new PrometheusMeterRegistry(PrometheusConfig.DEFAULT);
    }

    @Bean ConversionService conversionService() {
      return ApplicationConversionService.getSharedInstance();
    }
  }

  static void registerBaseConfig(AnnotationConfigApplicationContext context) {
    context.register(
      PropertyPlaceholderAutoConfiguration.class,
      Config.class,
      ZipkinConfiguration.class,
      ZipkinHttpConfiguration.class
    );
  }
}