!7

// works with certain versions of vnstat. Try apt-get install vnstat

module EstimatedMonthlyTrafficPercentage > DynBigNumber {
  start {
    doEvery(0.0, 10*60.0, r {
      if (getMonthlyTrafficLimit() == 0)
        setValue("Please set traffic limit");
      if (!isOnPATH('vnstat))
        setValue("vnstat not installed");
      else
        setValue(regexpReplaceWithNothing(",\\d+",
          parse_vnstat(backtick('vnstat)).thisMonthEstimated));
    });
  }
  
  afterVisualize {
    componentPopupMenuItem(label, "Set traffic limit...", r setLimit);
  }
  
  enhanceFrame {
    internalFramePopupMenuItem("Set traffic limit...", r setLimit);
  }
  
  void setLimit enter {
    inputText("Monthly traffic limit (GB, 0 for unknown)", str(getMonthlyTrafficLimit()), voidfunc(S s) {
      setMonthlyTrafficLimit(parseLong(s));
    });
  }
}