/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.activemq.artemis.cli.commands.tools.journal;

import java.io.File;

import io.airlift.airline.Command;
import org.apache.activemq.artemis.cli.commands.ActionContext;
import org.apache.activemq.artemis.cli.commands.tools.LockAbstract;
import org.apache.activemq.artemis.core.config.Configuration;
import org.apache.activemq.artemis.core.io.IOCriticalErrorListener;
import org.apache.activemq.artemis.core.io.nio.NIOSequentialFileFactory;
import org.apache.activemq.artemis.core.journal.impl.JournalImpl;
import org.apache.activemq.artemis.core.persistence.impl.journal.JournalRecordIds;

@Command(name = "compact", description = "Compacts the journal of a non running server")
public final class CompactJournal extends LockAbstract {

   @Override
   public Object execute(ActionContext context) throws Exception {
      super.execute(context);
      try {
         Configuration configuration = getFileConfiguration();
         compactJournals(configuration);

      } catch (Exception e) {
         treatError(e, "data", "compact");
      }
      return null;
   }

   public static void compactJournals(Configuration configuration) throws Exception {
      compactJournal(configuration.getJournalLocation(), configuration.getJournalRetentionLocation(), "activemq-data", "amq", configuration.getJournalMinFiles(),
                     configuration.getJournalPoolFiles(), configuration.getJournalFileSize(), null, JournalRecordIds.UPDATE_DELIVERY_COUNT,
                     JournalRecordIds.SET_SCHEDULED_DELIVERY_TIME);
      System.out.println("Compactation succeeded for " + configuration.getJournalLocation().getAbsolutePath());
      compactJournal(configuration.getBindingsLocation(), null, "activemq-bindings", "bindings", 2, 2, 1048576, null);
      System.out.println("Compactation succeeded for " + configuration.getBindingsLocation());
   }

   public static void compactJournal(final File directory,
                               final File historyFolder,
                               final String journalPrefix,
                               final String journalSuffix,
                               final int minFiles,
                               final int poolFiles,
                               final int fileSize,
                               final IOCriticalErrorListener listener,
                               byte... replaceableRecords) throws Exception {
      NIOSequentialFileFactory nio = new NIOSequentialFileFactory(directory, listener, 1);

      JournalImpl journal = new JournalImpl(fileSize, minFiles, poolFiles, 0, 0, nio, journalPrefix, journalSuffix, 1);
      if (historyFolder != null) {
         journal.setHistoryFolder(historyFolder, -1, -1);
      }
      for (byte i : replaceableRecords) {
         journal.replaceableRecord(i);
      }
      journal.setRemoveExtraFilesOnLoad(true);

      journal.start();

      journal.loadInternalOnly();

      journal.compact();

      journal.stop();
   }
}
