session-android/src/org/thoughtcrime/securesms/jobs/TrimThreadJob.java

/**
 * Copyright (C) 2014 Open Whisper Systems
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.thoughtcrime.securesms.jobs;

import android.support.annotation.NonNull;

import org.thoughtcrime.securesms.database.DatabaseFactory;
import org.thoughtcrime.securesms.jobmanager.Data;
import org.thoughtcrime.securesms.jobmanager.Job;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.util.TextSecurePreferences;

public class TrimThreadJob extends BaseJob {

  public static final String KEY = "TrimThreadJob";

  private static final String TAG = TrimThreadJob.class.getSimpleName();

  private static final String KEY_THREAD_ID = "thread_id";

  private long threadId;

  public TrimThreadJob(long threadId) {
    this(new Job.Parameters.Builder().setQueue("TrimThreadJob").build(), threadId);
  }

  private TrimThreadJob(@NonNull Job.Parameters parameters, long threadId) {
    super(parameters);
    this.threadId = threadId;
  }

  @Override
  public @NonNull Data serialize() {
    return new Data.Builder().putLong(KEY_THREAD_ID, threadId).build();
  }

  @Override
  public @NonNull String getFactoryKey() {
    return KEY;
  }

  @Override
  public void onRun() {
    boolean trimmingEnabled   = TextSecurePreferences.isThreadLengthTrimmingEnabled(context);
    int     threadLengthLimit = TextSecurePreferences.getThreadTrimLength(context);

    if (!trimmingEnabled)
      return;

    DatabaseFactory.getThreadDatabase(context).trimThread(threadId, threadLengthLimit);
  }

  @Override
  public boolean onShouldRetry(@NonNull Exception exception) {
    return false;
  }

  @Override
  public void onCanceled() {
    Log.w(TAG, "Canceling trim attempt: " + threadId);
  }

  public static final class Factory implements Job.Factory<TrimThreadJob> {
    @Override
    public @NonNull TrimThreadJob create(@NonNull Parameters parameters, @NonNull Data data) {
      return new TrimThreadJob(parameters, data.getLong(KEY_THREAD_ID));
    }
  }
}