#!code ../lib/currency.rb

proc do |ks, vs, rereduce|
  {
    :booking_count => vs.inject(0) { |total, v| total + v['booking_count'] },
    :total_pax => vs.inject(0) { |total, v| total + v['total_pax'] },
    :total_cos_gbp => vs.inject(BigDecimal.new("0")) { |total, v| total + BigDecimal.new(v['total_cos_gbp']) }.format_currency,
    :total_sales => vs.inject(BigDecimal.new("0")) { |total, v| total + BigDecimal.new(v['total_sales']) }.format_currency,
    :total_cos => vs.map { |v| v['total_cos'] }.inject do |h, v|
      h.merge(v){|key, value1, value2| (BigDecimal.new(value1) + BigDecimal.new(value2)).format_currency}
    end
  }
end