/*
 * Copyright 2012-2015 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.cli.compiler.grape;

import java.io.File;

import org.apache.maven.repository.internal.MavenRepositorySystemUtils;
import org.eclipse.aether.DefaultRepositorySystemSession;
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.internal.impl.SimpleLocalRepositoryManagerFactory;
import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.repository.LocalRepositoryManager;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.runners.MockitoJUnitRunner;
import org.mockito.stubbing.Answer;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;

/**
 * Tests for {@link GrapeRootRepositorySystemSessionAutoConfiguration}
 *
 * @author Andy Wilkinson
 */
@RunWith(MockitoJUnitRunner.class)
public class GrapeRootRepositorySystemSessionAutoConfigurationTests {

	private DefaultRepositorySystemSession session = MavenRepositorySystemUtils
			.newSession();

	@Mock
	private RepositorySystem repositorySystem;

	@Test
	public void noLocalRepositoryWhenNoGrapeRoot() {
		given(this.repositorySystem.newLocalRepositoryManager(eq(this.session),
				any(LocalRepository.class)))
						.willAnswer(new Answer<LocalRepositoryManager>() {

							@Override
							public LocalRepositoryManager answer(
									InvocationOnMock invocation) throws Throwable {
								LocalRepository localRepository = invocation
										.getArgumentAt(1, LocalRepository.class);
								return new SimpleLocalRepositoryManagerFactory()
										.newInstance(
												GrapeRootRepositorySystemSessionAutoConfigurationTests.this.session,
												localRepository);
							}

						});
		new GrapeRootRepositorySystemSessionAutoConfiguration().apply(this.session,
				this.repositorySystem);
		verify(this.repositorySystem, times(0))
				.newLocalRepositoryManager(eq(this.session), any(LocalRepository.class));
		assertThat(this.session.getLocalRepository()).isNull();
	}

	@Test
	public void grapeRootConfiguresLocalRepositoryLocation() {
		given(this.repositorySystem.newLocalRepositoryManager(eq(this.session),
				any(LocalRepository.class)))
						.willAnswer(new LocalRepositoryManagerAnswer());

		System.setProperty("grape.root", "foo");
		try {
			new GrapeRootRepositorySystemSessionAutoConfiguration().apply(this.session,
					this.repositorySystem);
		}
		finally {
			System.clearProperty("grape.root");
		}

		verify(this.repositorySystem, times(1))
				.newLocalRepositoryManager(eq(this.session), any(LocalRepository.class));

		assertThat(this.session.getLocalRepository()).isNotNull();
		assertThat(this.session.getLocalRepository().getBasedir().getAbsolutePath())
				.endsWith(File.separatorChar + "foo" + File.separatorChar + "repository");
	}

	private class LocalRepositoryManagerAnswer implements Answer<LocalRepositoryManager> {
		@Override
		public LocalRepositoryManager answer(InvocationOnMock invocation)
				throws Throwable {
			LocalRepository localRepository = invocation.getArgumentAt(1,
					LocalRepository.class);
			return new SimpleLocalRepositoryManagerFactory().newInstance(
					GrapeRootRepositorySystemSessionAutoConfigurationTests.this.session,
					localRepository);
		}

	}

}
