use System.IO.File;
use Data.CSV;

class CsvData {
  function : Main(args : String[]) ~ Nil {
    file_out : FileWriter;
    leaving {
      if(file_out <> Nil) {
        file_out->Close();
      };
    };

    if(args->Size() > 0) {
      file_name := args[0];
      csv := CsvTable->New(FileReader->ReadFile(file_name));
      if(csv->IsParsed()) {
        csv->AppendColumn("SUM");
        for(i := 1; i < csv->Size(); i += 1;) {
          row := csv->Get(i);
          sum := row->Sum(row->Size() - 1);
          row->Set("SUM", sum->ToString());
        };
      };

      output := csv->ToString();
      output->PrintLine();

      file_out := FileWriter->New("new-csv.csv");
      file_out->WriteString(output);
    };
  }
}