/*
 * Copyright 2012-present the original author or 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
 *
 *      https://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.springframework.boot.micrometer.metrics.autoconfigure.export.newrelic;

import io.micrometer.core.instrument.Clock;
import io.micrometer.newrelic.NewRelicClientProvider;
import io.micrometer.newrelic.NewRelicConfig;
import io.micrometer.newrelic.NewRelicMeterRegistry;
import org.junit.jupiter.api.Test;

import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.test.context.runner.ApplicationContextRunner;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;

/**
 *
 * Tests for {@link NewRelicMetricsExportAutoConfiguration}.
 *
 * @author Andy Wilkinson
 * @author Stephane Nicoll
 */
class NewRelicMetricsExportAutoConfigurationTests {

	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
		.withConfiguration(AutoConfigurations.of(NewRelicMetricsExportAutoConfiguration.class));

	@Test
	void backsOffWithoutAClock() {
		this.contextRunner.run((context) -> assertThat(context).doesNotHaveBean(NewRelicMeterRegistry.class));
	}

	@Test
	void failsWithoutAnApiKey() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.account-id=12345")
			.run((context) -> assertThat(context).hasFailed());
	}

	@Test
	void failsWithoutAnAccountId() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde")
			.run((context) -> assertThat(context).hasFailed());
	}

	@Test
	void failsToAutoConfigureWithoutEventType() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345",
					"management.newrelic.metrics.export.event-type=")
			.run((context) -> assertThat(context).hasFailed());
	}

	@Test
	void autoConfiguresWithEventTypeOverridden() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345",
					"management.newrelic.metrics.export.event-type=wxyz")
			.run((context) -> assertThat(context).hasSingleBean(NewRelicMeterRegistry.class)
				.hasSingleBean(Clock.class)
				.hasSingleBean(NewRelicConfig.class));
	}

	@Test
	void autoConfiguresWithMeterNameEventTypeEnabledAndWithoutEventType() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345",
					"management.newrelic.metrics.export.event-type=",
					"management.newrelic.metrics.export.meter-name-event-type-enabled=true")
			.run((context) -> assertThat(context).hasSingleBean(NewRelicMeterRegistry.class)
				.hasSingleBean(Clock.class)
				.hasSingleBean(NewRelicConfig.class));
	}

	@Test
	void autoConfiguresWithAccountIdAndApiKey() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345")
			.run((context) -> assertThat(context).hasSingleBean(NewRelicMeterRegistry.class)
				.hasSingleBean(Clock.class)
				.hasSingleBean(NewRelicConfig.class));
	}

	@Test
	void autoConfigurationCanBeDisabledWithDefaultsEnabledProperty() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.defaults.metrics.export.enabled=false")
			.run((context) -> assertThat(context).doesNotHaveBean(NewRelicMeterRegistry.class)
				.doesNotHaveBean(NewRelicConfig.class));
	}

	@Test
	void autoConfigurationCanBeDisabledWithSpecificEnabledProperty() {
		this.contextRunner.withUserConfiguration(BaseConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.enabled=false")
			.run((context) -> assertThat(context).doesNotHaveBean(NewRelicMeterRegistry.class)
				.doesNotHaveBean(NewRelicConfig.class));
	}

	@Test
	void allowsConfigToBeCustomized() {
		this.contextRunner.withUserConfiguration(CustomConfigConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345")
			.run((context) -> assertThat(context).hasSingleBean(NewRelicConfig.class).hasBean("customConfig"));
	}

	@Test
	void allowsRegistryToBeCustomized() {
		this.contextRunner.withUserConfiguration(CustomRegistryConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345")
			.run((context) -> assertThat(context).hasSingleBean(NewRelicMeterRegistry.class).hasBean("customRegistry"));
	}

	@Test
	void allowsClientProviderToBeCustomized() {
		this.contextRunner.withUserConfiguration(CustomClientProviderConfiguration.class)
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=12345")
			.run((context) -> {
				assertThat(context).hasSingleBean(NewRelicMeterRegistry.class);
				assertThat(context.getBean(NewRelicMeterRegistry.class)).hasFieldOrPropertyWithValue("clientProvider",
						context.getBean("customClientProvider"));
			});
	}

	@Test
	void stopsMeterRegistryWhenContextIsClosed() {
		this.contextRunner
			.withPropertyValues("management.newrelic.metrics.export.api-key=abcde",
					"management.newrelic.metrics.export.account-id=abcde")
			.withUserConfiguration(BaseConfiguration.class)
			.run((context) -> {
				NewRelicMeterRegistry registry = context.getBean(NewRelicMeterRegistry.class);
				assertThat(registry.isClosed()).isFalse();
				context.close();
				assertThat(registry.isClosed()).isTrue();
			});
	}

	@Configuration(proxyBeanMethods = false)
	static class BaseConfiguration {

		@Bean
		Clock customClock() {
			return Clock.SYSTEM;
		}

	}

	@Configuration(proxyBeanMethods = false)
	@Import(BaseConfiguration.class)
	static class CustomConfigConfiguration {

		@Bean
		NewRelicConfig customConfig() {
			return (key) -> {
				if ("newrelic.accountId".equals(key)) {
					return "abcde";
				}
				if ("newrelic.apiKey".equals(key)) {
					return "12345";
				}
				return null;
			};
		}

	}

	@Configuration(proxyBeanMethods = false)
	@Import(BaseConfiguration.class)
	static class CustomRegistryConfiguration {

		@Bean
		NewRelicMeterRegistry customRegistry(NewRelicConfig config, Clock clock) {
			return new NewRelicMeterRegistry(config, clock);
		}

	}

	@Configuration(proxyBeanMethods = false)
	@Import(BaseConfiguration.class)
	static class CustomClientProviderConfiguration {

		@Bean
		NewRelicClientProvider customClientProvider() {
			return mock(NewRelicClientProvider.class);
		}

	}

}
