/*
 * Copyright 2002-2021 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.build.optional;

import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.attributes.Usage;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.JavaPluginConvention;
import org.gradle.api.tasks.SourceSetContainer;
import org.gradle.plugins.ide.eclipse.EclipsePlugin;
import org.gradle.plugins.ide.eclipse.model.EclipseModel;

/**
 * A {@code Plugin} that adds support for Maven-style optional dependencies. Creates a new
 * {@code optional} configuration. The {@code optional} configuration is part of the
 * project's compile and runtime classpaths but does not affect the classpath of
 * dependent projects.
 *
 * @author Andy Wilkinson
 */
public class OptionalDependenciesPlugin implements Plugin<Project> {

	/**
	 * Name of the {@code optional} configuration.
	 */
	public static final String OPTIONAL_CONFIGURATION_NAME = "optional";

	@Override
	public void apply(Project project) {
		Configuration optional = project.getConfigurations().create("optional");
		optional.attributes((attributes) -> attributes.attribute(Usage.USAGE_ATTRIBUTE,
				project.getObjects().named(Usage.class, Usage.JAVA_API)));
		optional.setCanBeConsumed(false);
		optional.setCanBeResolved(true);
		project.getPlugins().withType(JavaPlugin.class, (javaPlugin) -> {
			SourceSetContainer sourceSets = project.getConvention()
					.getPlugin(JavaPluginConvention.class).getSourceSets();
			sourceSets.all((sourceSet) -> {
				sourceSet.setCompileClasspath(
						sourceSet.getCompileClasspath().plus(optional));
				sourceSet.setRuntimeClasspath(
						sourceSet.getRuntimeClasspath().plus(optional));
			});
		});
		project.getPlugins().withType(EclipsePlugin.class, (eclipePlugin) -> {
			project.getExtensions().getByType(EclipseModel.class)
					.classpath((classpath) -> {
						classpath.getPlusConfigurations().add(optional);
					});
		});
	}

}
@@ -1707,153 +1707,8 @@
 %22);%0A
-%09%09optional.attributes((attributes) -%3E attributes.attribute(Usage.USAGE_ATTRIBUTE,%0A%09%09%09%09project.getObjects().named(Usage.class, Usage.JAVA_API)));%0A
 %09%09op
@@ -1771,11 +1771,12 @@
 ved(
-tru
+fals
 e);%0A
@@ -1901,22 +1901,16 @@
 ention()
-%0A%09%09%09%09%09
 .getPlug
@@ -1939,16 +1939,22 @@
 n.class)
+%0A%09%09%09%09%09
 .getSour
@@ -2006,45 +2006,46 @@
 %09%09%09%09
-sourceSet.s
+project.g
 etCo
-mpileClasspath(%0A%09%09%09%09%09%09
+nfigurations().getByName(
 sour
@@ -2061,39 +2061,64 @@
 CompileClasspath
-().plus
+ConfigurationName()).extendsFrom
 (optional));%0A%09%09%09
@@ -2115,52 +2115,52 @@
 nal)
-)
 ;%0A%09%09%09%09
-sourceSet.setRuntimeClasspath(%0A%09%09%09%09%09%09
+project.getConfigurations().getByName(
 sour
@@ -2188,15 +2188,40 @@
 path
-().plus
+ConfigurationName()).extendsFrom
 (opt
@@ -2226,17 +2226,16 @@
 ptional)
-)
 ;%0A%09%09%09%7D);

Extend optional rather than adding it to existing classpath