Create invoice list from directory

create_invoice_list.rb

File.open("invoices.csv", 'w+') { |file|
  file.write("user_id;waybill;invoice_file_name\n")
}

dir_path = File.join(Rails.root, 'private', 'invoices')
invoices = Dir.entries(dir_path)

invoices.each do |invoice|
  next if ['.', '..', '.DS_Store'].include?(invoice)
  
  # Split "026_4611873943_003915.pdf => [X, waybill, user_id]"
  arr = invoice.split('_')
  begin
    # Split 003915.pdf and remove 00 
    id = arr[2].split('.').first.to_i
  rescue
    puts "ERORR => #{arr.inspect} => #{invoice}"
  end

  File.open("invoices.csv", 'a') { |file|
    file.write("#{id};#{arr[1]};#{invoice}\n")
  }
end