/*
 * 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.shindig.social.core.util.atom;

import org.apache.shindig.social.opensocial.spi.DataCollection;
import org.apache.shindig.social.opensocial.spi.RestfulCollection;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

/**
 * represents an atom:feed entry
 */
public class AtomFeed {

  @SuppressWarnings("unchecked")
  private Collection entry;
  @SuppressWarnings("unused")
  private int startIndex;
  @SuppressWarnings("unused")
  private int totalResults;
  @SuppressWarnings("unused")
  private int itemsPerPage;
  @SuppressWarnings("unused")
  private String author;
  @SuppressWarnings("unused")
  private AtomLink link;

  /**
   * @param obj
   */
  @SuppressWarnings("unchecked")
  public AtomFeed(Object obj) {
    if (obj instanceof Map) {
      Map<?, ?> m = (Map<?, ?>) obj;
      entry = new ArrayList();
      for ( Entry<?, ?> o : m.entrySet()) {
        entry.add(new AtomEntry(o));
      }
      startIndex = 0;
      totalResults = entry.size();
      itemsPerPage = entry.size();
    } else if (obj instanceof RestfulCollection<?>) {
      RestfulCollection<?> r = (RestfulCollection<?>) obj;
      entry = new ArrayList();
      List<?> entryList = r.getEntry();
      for (Object o : entryList) {
        entry.add(new AtomEntry(o));
      }
      startIndex = r.getStartIndex();
      totalResults = r.getTotalResults();
      itemsPerPage = entryList.size();
      author = "?";
      link = new AtomLink("rel", "???");
    } else if ( obj instanceof DataCollection ) {
      DataCollection dc = (DataCollection) obj;
      entry = new ArrayList();
      for ( Entry<String, Map<String,String>> o : dc.getEntry().entrySet()) {
        entry.add(new AtomEntry(o));
      }
      startIndex = 0;
      totalResults = entry.size();
      itemsPerPage = entry.size();
    } else {
      entry = new ArrayList();
      entry.add(new AtomEntry(obj));
      startIndex = 0;
      totalResults = 1;
      itemsPerPage = 1;
    }
  }

}