Script to download all invoice pdfs from facturagem.com

facturagem_pdf_downloader.rb

#!/usr/bin/env ruby

require 'httparty'
                                                                                                                                                                                    
login = ENV['LOGIN']
password = ENV['PASSWORD']
options = {:body => {:login => login, :password => password}}
r = HTTParty.post('https://facturagem.com/api/session.json', options)

api_key = r.parsed_response['user']['api_key']
options = {:query => {:api_key => api_key, :format => 'json', :strict => false}}

invoices_link = r.parsed_response['user']['links'].select{|l| l['rel'] == 'invoices'}.first
page = 1

while true 
  options[:query].merge!({:page => page})
  r = HTTParty.get(invoices_link['uri'], options)
  if r.parsed_response['invoices']
    r.parsed_response['invoices'].each do |i| 
      invoice_uri =  i['links'].first['uri']
      invoice = HTTParty.get(invoice_uri, options)
      pdf_link = invoice.parsed_response['invoice']['links'].select{|l| l['rel']=='pdf'}.first['uri']
      invoice_number = invoice.parsed_response['invoice']['number']
      `wget -O #{invoice_number}.pdf #{pdf_link}`
    end
    page += 1
  else 
    break
  end
end