/* ===================================================
 * Copyright 2015 Alex Muthmann
 *
 * 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 de.dev.eth0.rssreader.core.http.precacher;

import de.dev.eth0.rssreader.core.http.HttpLoader;
import java.util.List;
import timber.log.Timber;

public abstract class AbstractUrlPrecacher extends AbstractPrecacher implements PrecacheHelper.UrlPrecacher {

  public AbstractUrlPrecacher(HttpLoader loader) {
    super(loader);
  }

  @Override
  public void precache(List<String> urls) {
    for (String url : urls) {
      if (accepts(url)) {
        Timber.d("Precaching url %s", url);
        precache(url);
      }
    }
  }

  public void precache(String url) {
    getLoader().precacheUrl(url);
  }

  /**
   * @param url
   * @return true if url is acceptable for precaching
   */
  public abstract boolean accepts(String url);

}
