/*******************************************************************************
 * Copyright (C) 2012, 2013 Robin Stocker <robin@nibor.org>
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.eclipse.egit.core.internal.util;

import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.egit.core.op.ConnectProviderOperation;
import org.eclipse.egit.core.test.GitTestCase;
import org.eclipse.egit.core.test.TestProject;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class ResourceUtilTest extends GitTestCase {

	private Repository repository;

	@Before
	public void before() throws Exception {
		repository = FileRepositoryBuilder.create(gitDir);
		repository.create();
		connect(project.getProject());
	}

	@After
	public void after() {
		repository.close();
	}

	@Test
	public void getResourceForLocationShouldReturnFile() throws Exception {
		IFile file = project.createFile("file", new byte[] {});
		IResource resource = ResourceUtil.getResourceForLocation(file.getLocation());
		assertThat(resource, instanceOf(IFile.class));
	}

	@Test
	public void getResourceForLocationShouldReturnFolder() throws Exception {
		IFolder folder = project.createFolder("folder");
		IResource resource = ResourceUtil.getResourceForLocation(folder.getLocation());
		assertThat(resource, instanceOf(IFolder.class));
	}

	@Test
	public void getResourceForLocationShouldReturnNullForInexistentFile() throws Exception {
		IPath location = project.getProject().getLocation().append("inexistent");
		IResource resource = ResourceUtil.getResourceForLocation(location);
		assertThat(resource, nullValue());
	}

	@Test
	public void getFileForLocationShouldReturnExistingFileInCaseOfNestedProject()
			throws Exception {
		TestProject nested = new TestProject(true, "Project-1/Project-0");
		connect(nested.getProject());
		IFile file = nested.createFile("a.txt", new byte[] {});
		IPath location = file.getLocation();

		IFile result = ResourceUtil.getFileForLocation(location);
		assertThat(result, notNullValue());
		assertTrue("Returned IFile should exist", result.exists());
		assertThat(result.getProject(), is(nested.getProject()));
	}

	@Test
	public void getFileForLocationShouldReturnExistingFileInCaseOfNestedNotClosedProject()
			throws Exception {
		TestProject nested = new TestProject(true, "Project-1/Project-0");
		connect(nested.getProject());
		TestProject nested2 = new TestProject(true,
				"Project-1/Project-0/Project");
		connect(nested2.getProject());
		IFile file = nested2.createFile("a.txt", new byte[] {});
		IPath location = file.getLocation();
		nested2.project.close(new NullProgressMonitor());
		IFile result = ResourceUtil.getFileForLocation(location);
		assertThat(result, notNullValue());
		assertTrue("Returned IFile should exist", result.exists());
		assertThat(result.getProject(), is(nested.getProject()));
	}

	@Test
	public void getFileForLocationShouldNotUseFilesWithoutRepositoryMapping()
			throws Exception {
		TestProject nested = new TestProject(true, "Project-1/Project-0");
		IFile file = nested.createFile("a.txt", new byte[] {});
		IPath location = file.getLocation();

		IFile result = ResourceUtil.getFileForLocation(location);
		assertThat(result, notNullValue());
		assertTrue("Returned IFile should exist", result.exists());
		assertThat(result.getProject(), is(project.getProject()));
	}

	private void connect(IProject p) throws CoreException {
		ConnectProviderOperation operation = new ConnectProviderOperation(p,
				gitDir);
		operation.execute(null);
	}
}
