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/******************************************************************************
* Copyright (c) 2011 GitHub Inc.
* 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
*
* Contributors:
* Kevin Sawicki (GitHub Inc.) - initial API and implementation
*****************************************************************************/
package org.eclipse.mylyn.internal.github.ui.pr;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.net.URISyntaxException;
import java.text.MessageFormat;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.core.op.CreateLocalBranchOperation;
import org.eclipse.egit.core.op.FetchOperation;
import org.eclipse.egit.core.op.MergeOperation;
import org.eclipse.egit.github.core.PullRequest;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.UIPreferences;
import org.eclipse.egit.ui.internal.branch.BranchOperationUI;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.mylyn.internal.github.core.pr.PullRequestComposite;
import org.eclipse.mylyn.internal.github.core.pr.PullRequestConnector;
import org.eclipse.mylyn.internal.github.core.pr.PullRequestUtils;
import org.eclipse.mylyn.internal.github.ui.GitHubUi;
import org.eclipse.mylyn.internal.github.ui.TaskDataHandler;
import org.eclipse.mylyn.tasks.core.data.TaskData;
/**
* Checkout pull request handler
*/
public class CheckoutPullRequestHandler extends TaskDataHandler {
/**
* ID
*/
public static final String ID = "org.eclipse.mylyn.github.ui.command.checkoutPullRequest"; //$NON-NLS-1$
/**
* Create checkout pull request handler
*/
public CheckoutPullRequestHandler() {
}
private RevCommit getBase(Repository repo, PullRequest request)
throws IOException {
try (RevWalk walk = new RevWalk(repo)) {
return walk.parseCommit(repo.resolve(request.getBase().getSha()));
}
}
public Object execute(final ExecutionEvent event) throws ExecutionException {
final TaskData data = getTaskData(event);
if (data == null)
return null;
Job job = new Job(MessageFormat.format(
Messages.CheckoutPullRequestHandler_JobName, data.getTaskId())) {
protected IStatus run(IProgressMonitor monitor) {
SubProgressMonitor sub;
try {
PullRequestComposite prComp = PullRequestConnector
.getPullRequest(data);
if (prComp == null)
return Status.CANCEL_STATUS;
PullRequest request = prComp.getRequest();
Repository repo = PullRequestUtils.getRepository(request);
if (repo == null)
return Status.CANCEL_STATUS;
String branchName = PullRequestUtils.getBranchName(request);
Ref branchRef = repo.getRef(branchName);
RemoteConfig remote = null;
String headBranch = null;
monitor.beginTask("", 5); //$NON-NLS-1$
// Add remote
if (!PullRequestUtils.isFromSameRepository(request)) {
monitor.subTask(MessageFormat
.format(Messages.CheckoutPullRequestHandler_TaskAddRemote,
request.getHead().getRepo().getOwner()
.getLogin()));
remote = PullRequestUtils.addRemote(repo, request);
headBranch = PullRequestUtils.getHeadBranch(request);
} else {
remote = PullRequestUtils.getRemoteConfig(repo,
Constants.DEFAULT_REMOTE_NAME);
headBranch = request.getHead().getRef();
}
monitor.worked(1);
// Create topic branch starting at SHA-1 of base
if (branchRef == null) {
sub = new SubProgressMonitor(monitor, 1);
sub.subTask(MessageFormat
.format(Messages.CheckoutPullRequestHandler_TaskCreateBranch,
branchName));
PullRequestUtils.configureTopicBranch(repo, request);
new CreateLocalBranchOperation(repo, branchName,
getBase(repo, request)).execute(sub);
sub.done();
} else
monitor.worked(1);
// Checkout topic branch
if (!PullRequestUtils.isCurrentBranch(branchName, repo)) {
sub = new SubProgressMonitor(monitor, 1);
sub.subTask(MessageFormat
.format(Messages.CheckoutPullRequestHandler_TaskCheckoutBranch,
branchName));
BranchOperationUI.checkout(repo, branchName).run(sub);
sub.done();
} else
monitor.worked(1);
// Fetch from remote
sub = new SubProgressMonitor(monitor, 1);
sub.subTask(MessageFormat.format(
Messages.CheckoutPullRequestHandler_TaskFetching,
remote.getName()));
new FetchOperation(repo, remote, Activator.getDefault()
.getPreferenceStore()
.getInt(UIPreferences.REMOTE_CONNECTION_TIMEOUT),
false).run(sub);
sub.done();
// Merge head onto base
sub = new SubProgressMonitor(monitor, 1);
sub.subTask(MessageFormat.format(
Messages.CheckoutPullRequestHandler_TaskMerging,
headBranch));
new MergeOperation(repo, headBranch).execute(sub);
sub.done();
monitor.done();
executeCallback(event);
} catch (IOException e) {
GitHubUi.logError(e);
} catch (CoreException e) {
GitHubUi.logError(e);
} catch (URISyntaxException e) {
GitHubUi.logError(e);
} catch (InvocationTargetException e) {
GitHubUi.logError(e);
}
return Status.OK_STATUS;
}
};
schedule(job, event);
return null;
}
}
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