#include <qdir.h>
#include <kdebug.h>
#include "sysfs.h"

SysFS::SysFS()
{}

SysFS::~SysFS()
{}

bool SysFS::hasHDAPS()
{
  QDir d("/sys/devices/platform/hdaps");
  return d.isReadable();
}

bool SysFS::fileBool(QString path)
{
  QFile file;
  QTextStream stream;

  file.setName(path);
  if(! file.exists() || ! file.open(IO_ReadOnly))
    return FALSE;

  stream.setDevice(&file);
  return stream.readLine().toInt(NULL, 10);
}

bool SysFS::keyboardActivity()
{
  return fileBool("/sys/devices/platform/hdaps/keyboard_activity");
}

bool SysFS::mouseActivity()
{
  return fileBool("/sys/devices/platform/hdaps/mouse_activity");
}

QString SysFS::position()
{
  QFile file;
  QTextStream stream;

  file.setName("/sys/devices/platform/hdaps/position");
  if(! file.exists() || ! file.open(IO_ReadOnly))
    return NULL;

  stream.setDevice(&file);
  return stream.readLine();
}

QStringList SysFS::deviceList()
{
  QDir sysBlock("/sys/block", "[hs]d*", QDir::IgnoreCase, QDir::Dirs);

  if (! sysBlock.exists())
    return NULL;

  QStringList deviceList = sysBlock.entryList();
  unsigned int i = 0;
  while (i < deviceList.count())
  {
    if(QFile("/sys/block/" + deviceList[i] + "/device/unload_heads").exists())
	i++;
    else
        deviceList.remove(deviceList.at(i));
  }
  return deviceList;
}

bool SysFS::queueProtected(QString device)
{
  QFile file;
  bool b = FALSE;
  QTextStream stream;

  file.setName("/sys/block/" + device + "/device/unload_heads");
  if(! file.exists() || ! file.open(IO_ReadOnly))
    return NULL;
  
  stream.setDevice(&file);

  if(stream.readLine().toInt() > 0)
    b = TRUE;

  return b;
}