Ruby script to get Amazon expenses

amazon.rb

require 'date'

regexp = /(\d{1,2} \w+ \d{4})|(?:-EUR (\d+,\d{2}))/
results = DATA.read.scan(regexp)
expenses = Hash.new { 0 }

date = nil
results.each do |str_date, str_amount|
  date = Date.parse("0#{str_date}").strftime("%B-%Y") if str_date
  if str_amount
    amount = str_amount.gsub(',', '.').to_f
    expenses[date] += str_amount.gsub(',', '.').to_f
  end
end
expenses['total'] = expenses.values.sum.round(2)
puts expenses

# Copy data from https://www.amazon.it/cpe/yourpayments/transactions

__END__

6 febbraio 2024
Mastercard ****1234-EUR 9,99
Ordine n.xxx-xxxxxxx-xxxxxxx
Amazon.it
Mastercard ****1234-EUR 12,38
Ordine n.xxx-xxxxxxx-xxxxxxx
AMZN Mktp IT
5 febbraio 2024
Mastercard ****1234-EUR 8,99
Ordine n.xxx-xxxxxxx-xxxxxxx
AMZN Mktp IT