@data
@NoArgsConstructor
@AllArgsConstructor
public class MilestoneEvent {
    private static final Gson gson = new Gson();

    private String warehouseId;
    private String pickerId;
    private String milestoneGroup;
    private String milestoneType;
    private Date timeStamp;
    private String date;
    private Map<String, String> data = Collections.emptyMap();
    private UUID eventId;

    @Override
    public String toString() {
        return gson.toJson(this);
    }

    @Override
    public boolean equals(Object o) {
        if (o == this)
            return true;
        if (!(o instanceof MilestoneEvent)) {
            return false;
        }
        MilestoneEvent event = (MilestoneEvent) o;
        return Objects.equals(warehouseId, event.getWarehouseId()) && Objects.equals(pickerId, event.getPickerId())
                && Objects.equals(milestoneGroup, event.getMilestoneGroup())
                && Objects.equals(milestoneType, event.getMilestoneType())
                && Objects.equals(timeStamp, event.getTimeStamp())
                && Objects.equals(date, event.getDate())
                && Objects.equals(data, event.getData())
                && Objects.equals(eventId, event.getEventId());
    }

    @Override
    public int hashCode() {
        return eventId.hashCode();
    }
}