/*
 * Copyright 2019 Red Hat, Inc. and/or its affiliates.
 *
 * 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.uberfire.java.nio.fs.jgit.util.commands;

import java.util.List;

import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;

public class BranchUtil {

    public static void deleteUnfilteredBranches(final Repository repository,
                                                final List<String> branchesToKeep) throws GitAPIException {
        if (branchesToKeep == null || branchesToKeep.isEmpty()) {
            return;
        }

        final org.eclipse.jgit.api.Git git = org.eclipse.jgit.api.Git.wrap(repository);
        final String[] toDelete = git.branchList()
                .call()
                .stream()
                .map(Ref::getName)
                .map(fullname -> fullname.substring(fullname.lastIndexOf('/') + 1))
                .filter(name -> !branchesToKeep.contains(name))
                .toArray(String[]::new);
        git.branchDelete()
                .setBranchNames(toDelete)
                .setForce(true)
                .call();
    }
}
