module CsvToXls

# File lib/csv_to_xls.rb, line 8
def self.call(input_path, output_path)
  book = Spreadsheet::Workbook.new

  sheet_1 = book.create_worksheet

  header_format = Spreadsheet::Format.new(
    :weight => :bold,
    :horizontal_align => :left,
    :bottom => :thin,
    :locked => true
  )

  sheet_1.row(0).default_format = header_format

  #escaped quotes caused CSV.open(input_path, 'r') { |csv| csv.each_with_index { |row, i| ... }} to crash. Need to sub them out
  csv_text = File.read(input_path).gsub(/\\"/,'""')
  i = 0
  CSV.parse(csv_text) do |row|
    # set the width of each column to the length of its header
    if i == 0
      row.each_with_index do |header, k|
        sheet_1.column(k).width = header.length
      end
    end
    sheet_1.row(i).replace(row)
    i += 1
  end

  book.write output_path
end