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/*
 * 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.druid.indexing.input;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Preconditions;
import org.joda.time.Interval;

import java.util.Collections;
import java.util.List;
import java.util.Objects;

/**
 * A WindowedSegment represents a segment plus the list of intervals inside it which contribute to a timeline.
 * 
 * This class is intended for serialization in specs.
 */
public class WindowedSegmentId
{
  // This is of the form used by SegmentId.
  private final String segmentId;
  private final List intervals;

  @JsonCreator
  public WindowedSegmentId(
      @JsonProperty("segmentId") String segmentId,
      @JsonProperty("intervals") List intervals
  )
  {
    this.segmentId = Preconditions.checkNotNull(segmentId, "null segmentId");
    this.intervals = Preconditions.checkNotNull(intervals, "null intervals");
  }

  public void addInterval(Interval interval)
  {
    this.intervals.add(interval);
  }

  @JsonProperty
  public String getSegmentId()
  {
    return segmentId;
  }

  @JsonProperty
  public List getIntervals()
  {
    return Collections.unmodifiableList(intervals);
  }

  @Override
  public boolean equals(Object o)
  {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    WindowedSegmentId segmentId1 = (WindowedSegmentId) o;
    return Objects.equals(segmentId, segmentId1.segmentId) &&
           Objects.equals(intervals, segmentId1.intervals);
  }

  @Override
  public int hashCode()
  {
    return Objects.hash(segmentId, intervals);
  }

  @Override
  public String toString()
  {
    return "WindowedSegmentId{" +
           "segmentId='" + segmentId + '\'' +
           ", intervals=" + intervals +
           '}';
  }
}