def to_csv
    out = "";
    FCSV.generate(:encoding => 'u') out do |csv|
      csv << csv_header

      # Write the CSV based on the group/sort
      case sort
      when :user, :project
        time_entries.sort.each do |entryname, entry|
          entry[:logs].each do |e|
            csv << time_entry_to_csv(e)
          end
        end
      when :issue
        time_entries.sort.each do |project, entries|
          entries[:issues].sort {|a,b| a[0].id <=> b[0].id}.each do |issue, time_entries|
            time_entries.each do |e|
              csv << time_entry_to_csv(e)
            end
          end
        end
      end
    end
    out
  end