Module: Europe::Vat::Rates

Defined in:
lib/europe/vat/rates.rb

Overview

Rates

Constant Summary collapse

FALLBACK_RATES = 
{
  AT: 20.0, BE: 21.0, BG: 20.0, CY: 19.0, CZ: 21.0, DE: 19.0, DK: 25.0, EE: 24.0,
  EL: 24.0, ES: 21.0, FI: 25.5, FR: 20.0, HR: 25.0, HU: 27.0, IE: 23.0,
  IT: 22.0, LT: 21.0, LU: 17.0, LV: 21.0, MT: 18.0, NL: 21.0, PL: 23.0, PT: 23.0,
  RO: 21.0, SE: 25.0, SI: 22.0, SK: 23.0
}.freeze
RATES_URL = 
'https://raw.githubusercontent.com/benbucksch/eu-vat-rates' \
'/refs/heads/master/rates.json'
COUNTRY_CODE_MAP = 
{ GR: :EL }.freeze

Class Method Summary collapse

Class Method Details

.extract_rates(resp) ⇒ Object 



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# File 'lib/europe/vat/rates.rb', line 27

def self.extract_rates(resp)
  data = JSON.parse(resp)
  rates = {}
  data['rates'].each do |code, info|
    key = COUNTRY_CODE_MAP[code.to_sym] || code.to_sym
    rates[key] = info['standard_rate'].to_f
  end
  rates
rescue JSON::ParserError
  FALLBACK_RATES
end

.fetch_rates ⇒ Object 



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# File 'lib/europe/vat/rates.rb', line 39

def self.fetch_rates
  resp = Net::HTTP.get_response(URI.parse(RATES_URL))
  resp.code.to_i == 200 ? resp.body : nil
end

.retrieve ⇒ Object 



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# File 'lib/europe/vat/rates.rb', line 20

def self.retrieve
  resp = fetch_rates
  return FALLBACK_RATES if resp.nil?

  extract_rates(resp)
end