/*
 * Copyright 2011 gitblit.com.
 *
 * 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 com.gitblit.tests;

import java.io.File;
import java.io.FileOutputStream;
import java.util.Date;
import java.util.List;

import junit.framework.TestCase;

import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevBlob;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevTree;
import org.eclipse.jgit.storage.file.FileRepository;

import com.gitblit.utils.JGitUtils;
import com.gitblit.utils.JGitUtils.DiffOutputType;
import com.gitblit.wicket.models.PathModel.PathChangeModel;
import com.gitblit.wicket.models.RefModel;
import com.gitblit.wicket.models.TicketModel;

public class JGitUtilsTest extends TestCase {

	private File repositoriesFolder = new File("c:/projects/git");
	private boolean exportAll = true;
	private boolean readNested = true;

	private List<String> getRepositories() {
		return JGitUtils.getRepositoryList(repositoriesFolder, exportAll, readNested);
	}

	private Repository getRepository() throws Exception {
		return new FileRepository(new File(repositoriesFolder, getRepositories().get(0)) + "/" + Constants.DOT_GIT);
	}

	public void testFindRepositories() {
		List<String> list = getRepositories();
		assertTrue("No repositories found in " + repositoriesFolder, list.size() > 0);
	}

	public void testOpenRepository() throws Exception {
		Repository r = getRepository();
		r.close();
		assertTrue("Could not find repository!", r != null);
	}

	public void testLastChangeRepository() throws Exception {
		Repository r = getRepository();
		Date date = JGitUtils.getLastChange(r);
		r.close();
		assertTrue("Could not get last repository change date!", date != null);
	}
	
	public void testFirstCommit() throws Exception {
		Repository r = getRepository();
		RevCommit commit = JGitUtils.getFirstCommit(r, null);
		r.close();
		assertTrue("Could not get first commit!", commit != null);
		System.out.println(commit.getName() + " " + commit.getShortMessage());
	}

	public void testRetrieveRevObject() throws Exception {
		Repository r = getRepository();
		RevCommit commit = JGitUtils.getCommit(r, Constants.HEAD);
		RevTree tree = commit.getTree();
		RevObject object = JGitUtils.getRevObject(r, tree, "AUTHORS");
		r.close();
		assertTrue("Object is null!", object != null);
	}

	public void testRetrieveStringContent() throws Exception {
		Repository r = getRepository();
		RevCommit commit = JGitUtils.getCommit(r, Constants.HEAD);
		RevTree tree = commit.getTree();
		RevBlob blob = (RevBlob) JGitUtils.getRevObject(r, tree, "AUTHORS");
		String content = JGitUtils.getRawContentAsString(r, blob);
		r.close();
		assertTrue("Content is null!", content != null);
	}

	public void testTicGit() throws Exception {
		Repository r = new FileRepository(new File(repositoriesFolder, "ticgit") + "/" + Constants.DOT_GIT);
		RefModel ticgit = JGitUtils.getTicketsBranch(r);
		assertTrue("Ticgit branch does not exist!", ticgit != null);
		List<TicketModel> tickets = JGitUtils.getTickets(r);
		assertTrue("No tickets found!", tickets.size() > 0);
		r.close();
	}

	public void testFilesInCommit() throws Exception {
		Repository r = getRepository();
		RevCommit commit = JGitUtils.getCommit(r, Constants.HEAD);
		List<PathChangeModel> paths = JGitUtils.getFilesInCommit(r, commit);
		r.close();
		assertTrue("No changed paths found!", paths.size() > 0);
	}

	public void testCommitDiff() throws Exception {
		Repository r = getRepository();
		RevCommit commit = JGitUtils.getCommit(r, Constants.HEAD);
		String diff = JGitUtils.getCommitDiff(r, commit, DiffOutputType.PLAIN);
		r.close();
		System.out.println(diff);
	}
	
	public void testZip() throws Exception {
		Repository r = new FileRepository(new File(repositoriesFolder, "gitblit.git/" + Constants.DOT_GIT));
		FileOutputStream fos = null;
		try {
			File zipFile = new File("c:/output.zip");
			zipFile.delete();
			fos = new FileOutputStream(zipFile);
			if (JGitUtils.zip(r, "src", Constants.HEAD, fos)) {
				System.out.println("zip = " + zipFile.length() + " bytes");
			} else {
				System.err.println("failed to generate zip file?!");
			}
		} finally {
			if (fos != null) {
				try {
					fos.close();
				} catch (Throwable t) {
				}
			}
		}
	}

}