SniperSnapshot.java

package auctionsniper;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;

public class SniperSnapshot {
  public final String itemId;
  public final int lastPrice;
  public final int lastBid;
  public final SniperState state;
  
  public SniperSnapshot(String itemId, int lastPrice, int lastBid, SniperState state) {
    this.itemId = itemId;
    this.lastPrice = lastPrice;
    this.lastBid = lastBid;
    this.state = state;
  }
  
  @Override
  public boolean equals(Object obj) {
    return EqualsBuilder.reflectionEquals(this, obj);
  }
  @Override
  public int hashCode() {
    return HashCodeBuilder.reflectionHashCode(this);
  }
  @Override
  public String toString() {
    return ToStringBuilder.reflectionToString(this);
  }

  public static SniperSnapshot joining(String itemId) {
    return new SniperSnapshot(itemId, 0, 0, SniperState.JOINING);
  }

  public SniperSnapshot bidding(int newLastPrice, int newLastBid) {
    return new SniperSnapshot(itemId, newLastPrice, newLastBid, SniperState.BIDDING);
  }

  public SniperSnapshot winning(int newLastPrice) {
    return new SniperSnapshot(itemId, newLastPrice, lastBid, SniperState.WINNING);
  }

  public SniperSnapshot losing(int newLastPrice) {
    return new SniperSnapshot(itemId, newLastPrice, lastBid, SniperState.LOSING);
  }

  public SniperSnapshot closed() {
    return new SniperSnapshot(itemId, lastPrice, lastBid, state.whenAuctionClosed());
  }

  public SniperSnapshot failed() {
    return new SniperSnapshot(itemId, 0, 0, SniperState.FAILED);
  }

  public boolean isForSameItemAs(SniperSnapshot sniperSnapshot) {
    return itemId.equals(sniperSnapshot.itemId);
  }



}