org.openlca.git.actions.GitPush Maven / Gradle / Ivy

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package org.openlca.git.actions;

import java.util.List;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.transport.PushResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.RemoteRefUpdate;
import org.eclipse.jgit.transport.RemoteRefUpdate.Status;
import org.openlca.git.actions.GitPush.PushResponse;
import org.openlca.git.model.Commit;
import org.openlca.git.repo.OlcaRepository;
import org.openlca.git.util.Constants;

public class GitPush extends GitRemoteAction {

	private final OlcaRepository repo;
	private boolean force;
	
	private GitPush(OlcaRepository repo) {
		this.repo = repo;
	}

	public static GitPush from(OlcaRepository repo) {
		return new GitPush(repo);
	}

	public GitPush force() {
		this.force = true;
		return this;
	}
	
	@Override
	public PushResponse run() throws GitAPIException {
		if (repo == null)
			throw new IllegalStateException("Git repository must be set");
		var newCommits = repo.localHistory.getAheadOf(Constants.REMOTE_REF);
		if (newCommits.isEmpty())
			return new PushResponse(newCommits, Status.NOT_ATTEMPTED);
		Git.wrap(repo).gc().call();
		var result = Git.wrap(repo).push()
				.setCredentialsProvider(credentialsProvider)
				.setProgressMonitor(monitor)
				.setRemote(Constants.DEFAULT_REMOTE)
				.setRefSpecs(new RefSpec(Constants.LOCAL_REF))
				.setForce(force)
				.call();
		var update = getUpdate(result);
		if (update == null)
			return new PushResponse(newCommits, null);
		return new PushResponse(newCommits, update.getStatus());
	}

	private RemoteRefUpdate getUpdate(Iterable results) {
		if (results == null)
			return null;
		var iterator = results.iterator();
		if (!iterator.hasNext())
			return null;
		var result = iterator.next();
		if (result == null)
			return null;
		return result.getRemoteUpdate(Constants.LOCAL_REF);
	}

	public record PushResponse(List newCommits, Status status) {
	}

}