#include "../misc_framework/CsvFileDataNodes.h"

#include "NormalVolumeBreakBars.h"

NormalVolumeBreakBars::NormalVolumeBreakBars(DataNodeArgument const &args)
{
  std::string const &symbol = args.getStringValue();
  // We only look this up once.  The previous version would update when the
  // csv file was changed.  This was only used in debugging, not in live
  // processing.
  const DataNode::Integer volumeBreak =
    strtollDefault
    (FileOwnerDataNode::getStringValue("OvernightData.csv", 
				       "Volume Break", symbol), 
     0);
  // This type of statistical analysis only makes sense if we have enough
  // data.  We are requiring 1000 shares per block.  When we analyzied futures,
  // we used a minimum size of 20 for them.  This is impresice at best, but
  // prevents some silly cases.  Note that AlertMainControl contians a similar
  // test, and will not try to create any alerts that use this data unless
  // there is sufficient data.
  static const DataNode::Integer MIN_BLOCK_SIZE = 1000;
  if (volumeBreak < MIN_BLOCK_SIZE)
    _data = NULL;
  else
    addAutoLink(VolumeWeightedDataNode::find(this, 0, _data, 
					     symbol, volumeBreak));
}

VolumeBlocks const &NormalVolumeBreakBars::getBlocks() const
{
  static const VolumeBlocks emptyList;
  if (_data)
    return _data->getBlocks();
  else
    return emptyList;
}

VolumeBlocks::size_type NormalVolumeBreakBars::getBlockCount() const
{
  if (_data)
    return _data->getBlockCount();
  else
    return 0;
}

DataNode::Integer NormalVolumeBreakBars::getGroupBy() const
{
  if (_data)
    return _data->getGroupBy();
  else
    return 0;
}

DataNodeLink *NormalVolumeBreakBars::find(DataNodeListener *listener, 
					  int msgId,
					  NormalVolumeBreakBars *&node,
					  std::string const &symbol)
{
  return findHelper(listener, msgId, node, symbol);
}