/*
 * Copyright 2012-2019 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
 *
 *      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.springframework.boot.configurationprocessor;

import java.time.Duration;

import org.junit.Test;

import org.springframework.boot.configurationprocessor.metadata.ConfigurationMetadata;
import org.springframework.boot.configurationprocessor.metadata.Metadata;
import org.springframework.boot.configurationsample.endpoint.CamelCaseEndpoint;
import org.springframework.boot.configurationsample.endpoint.CustomPropertiesEndpoint;
import org.springframework.boot.configurationsample.endpoint.DisabledEndpoint;
import org.springframework.boot.configurationsample.endpoint.EnabledEndpoint;
import org.springframework.boot.configurationsample.endpoint.SimpleEndpoint;
import org.springframework.boot.configurationsample.endpoint.SpecificEndpoint;
import org.springframework.boot.configurationsample.endpoint.incremental.IncrementalEndpoint;

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

/**
 * Metadata generation tests for Actuator endpoints.
 *
 * @author Stephane Nicoll
 */
public class EndpointMetadataGenerationTests extends AbstractMetadataGenerationTests {

	@Test
	public void simpleEndpoint() {
		ConfigurationMetadata metadata = compile(SimpleEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.simple")
				.fromSource(SimpleEndpoint.class));
		assertThat(metadata).has(enabledFlag("simple", true));
		assertThat(metadata).has(cacheTtl("simple"));
		assertThat(metadata.getItems()).hasSize(3);
	}

	@Test
	public void disableEndpoint() {
		ConfigurationMetadata metadata = compile(DisabledEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.disabled")
				.fromSource(DisabledEndpoint.class));
		assertThat(metadata).has(enabledFlag("disabled", false));
		assertThat(metadata.getItems()).hasSize(2);
	}

	@Test
	public void enabledEndpoint() {
		ConfigurationMetadata metadata = compile(EnabledEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.enabled")
				.fromSource(EnabledEndpoint.class));
		assertThat(metadata).has(enabledFlag("enabled", true));
		assertThat(metadata.getItems()).hasSize(2);
	}

	@Test
	public void customPropertiesEndpoint() {
		ConfigurationMetadata metadata = compile(CustomPropertiesEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.customprops")
				.fromSource(CustomPropertiesEndpoint.class));
		assertThat(metadata)
				.has(Metadata.withProperty("management.endpoint.customprops.name")
						.ofType(String.class).withDefaultValue("test"));
		assertThat(metadata).has(enabledFlag("customprops", true));
		assertThat(metadata).has(cacheTtl("customprops"));
		assertThat(metadata.getItems()).hasSize(4);
	}

	@Test
	public void specificEndpoint() {
		ConfigurationMetadata metadata = compile(SpecificEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.specific")
				.fromSource(SpecificEndpoint.class));
		assertThat(metadata).has(enabledFlag("specific", true));
		assertThat(metadata).has(cacheTtl("specific"));
		assertThat(metadata.getItems()).hasSize(3);
	}

	@Test
	public void camelCaseEndpoint() {
		ConfigurationMetadata metadata = compile(CamelCaseEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.pascal-case")
				.fromSource(CamelCaseEndpoint.class));
		assertThat(metadata).has(enabledFlag("PascalCase", "pascal-case", true));
		assertThat(metadata.getItems()).hasSize(2);
	}

	@Test
	public void incrementalEndpointBuildChangeGeneralEnabledFlag() throws Exception {
		TestProject project = new TestProject(this.temporaryFolder,
				IncrementalEndpoint.class);
		ConfigurationMetadata metadata = project.fullBuild();
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.incremental")
				.fromSource(IncrementalEndpoint.class));
		assertThat(metadata).has(enabledFlag("incremental", true));
		assertThat(metadata).has(cacheTtl("incremental"));
		assertThat(metadata.getItems()).hasSize(3);
		project.replaceText(IncrementalEndpoint.class, "id = \"incremental\"",
				"id = \"incremental\", enableByDefault = false");
		metadata = project.incrementalBuild(IncrementalEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.incremental")
				.fromSource(IncrementalEndpoint.class));
		assertThat(metadata).has(enabledFlag("incremental", false));
		assertThat(metadata).has(cacheTtl("incremental"));
		assertThat(metadata.getItems()).hasSize(3);
	}

	@Test
	public void incrementalEndpointBuildChangeCacheFlag() throws Exception {
		TestProject project = new TestProject(this.temporaryFolder,
				IncrementalEndpoint.class);
		ConfigurationMetadata metadata = project.fullBuild();
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.incremental")
				.fromSource(IncrementalEndpoint.class));
		assertThat(metadata).has(enabledFlag("incremental", true));
		assertThat(metadata).has(cacheTtl("incremental"));
		assertThat(metadata.getItems()).hasSize(3);
		project.replaceText(IncrementalEndpoint.class, "@Nullable String param",
				"String param");
		metadata = project.incrementalBuild(IncrementalEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.incremental")
				.fromSource(IncrementalEndpoint.class));
		assertThat(metadata).has(enabledFlag("incremental", true));
		assertThat(metadata.getItems()).hasSize(2);
	}

	@Test
	public void incrementalEndpointBuildEnableSpecificEndpoint() throws Exception {
		TestProject project = new TestProject(this.temporaryFolder,
				SpecificEndpoint.class);
		ConfigurationMetadata metadata = project.fullBuild();
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.specific")
				.fromSource(SpecificEndpoint.class));
		assertThat(metadata).has(enabledFlag("specific", true));
		assertThat(metadata).has(cacheTtl("specific"));
		assertThat(metadata.getItems()).hasSize(3);
		project.replaceText(SpecificEndpoint.class, "enableByDefault = true",
				"enableByDefault = false");
		metadata = project.incrementalBuild(SpecificEndpoint.class);
		assertThat(metadata).has(Metadata.withGroup("management.endpoint.specific")
				.fromSource(SpecificEndpoint.class));
		assertThat(metadata).has(enabledFlag("specific", false));
		assertThat(metadata).has(cacheTtl("specific"));
		assertThat(metadata.getItems()).hasSize(3);
	}

	private Metadata.MetadataItemCondition enabledFlag(String endpointId,
			String endpointSuffix, Boolean defaultValue) {
		return Metadata
				.withEnabledFlag("management.endpoint." + endpointSuffix + ".enabled")
				.withDefaultValue(defaultValue).withDescription(
						String.format("Whether to enable the %s endpoint.", endpointId));
	}

	private Metadata.MetadataItemCondition enabledFlag(String endpointId,
			Boolean defaultValue) {
		return enabledFlag(endpointId, endpointId, defaultValue);
	}

	private Metadata.MetadataItemCondition cacheTtl(String endpointId) {
		return Metadata
				.withProperty("management.endpoint." + endpointId + ".cache.time-to-live")
				.ofType(Duration.class).withDefaultValue("0ms")
				.withDescription("Maximum time that a response can be cached.");
	}

}
