/*
    * Copyright (c) 2020, Google LLC  and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * http://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  package org.eclipse.jgit.internal.storage.dfs;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.eclipse.jgit.internal.storage.pack.CachedPack;
  import org.eclipse.jgit.lib.ProgressMonitor;
  import org.eclipse.jgit.transport.BundleWriter;
  
  /** Writes {@link DfsRepository} to a Git bundle. */
  public class DfsBundleWriter {
  	/**
  	 * Writes the entire {@link DfsRepository} to a Git bundle.
  	 * <p>
  	 * This method try to avoid traversing the pack files as much as possible
  	 * and dumps all objects as-is to a Git bundle.
  	 *
  	 * @param pm
  	 *            progress monitor
  	 * @param os
  	 *            Git bundle output
  	 * @param db
  	 *            repository
  	 * @throws IOException
  	 *             thrown if the output stream throws one.
  	 */
  	public static void writeEntireRepositoryAsBundle(ProgressMonitor pm,
  			OutputStream os, DfsRepository db) throws IOException {
  		BundleWriter bw = new BundleWriter(db);
  		db.getRefDatabase().getRefs().forEach(bw::include);
  		List<CachedPack> packs = new ArrayList<>();
  		for (DfsPackFile p : db.getObjectDatabase().getPacks()) {
  			packs.add(new DfsCachedPack(p));
  		}
  		bw.addObjectsAsIs(packs);
  		bw.writeBundle(pm, os);
  	}
  
  	private DfsBundleWriter() {
  	}
  }