module OffsitePayments::Integrations::Klarna

Public Class Methods

cart_items_payload(fields, cart_items) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 15
def self.cart_items_payload(fields, cart_items)
  check_required_fields!(fields)

  payload = fields['purchase_country'].to_s +
            fields['purchase_currency'].to_s +
            fields['locale'].to_s

  cart_items.each_with_index do |item, i|
    payload << fields["cart_item-#{i}_type"].to_s +
               fields["cart_item-#{i}_reference"].to_s +
               fields["cart_item-#{i}_quantity"].to_s +
               fields["cart_item-#{i}_unit_price"].to_s +
               fields.fetch("cart_item-#{i}_discount_rate", '').to_s
  end

  payload << fields['merchant_id'].to_s +
             fields['merchant_terms_uri'].to_s +
             fields['merchant_checkout_uri'].to_s +
             fields['merchant_base_uri'].to_s +
             fields['merchant_confirmation_uri'].to_s

  payload
end
digest(payload, shared_secret) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 45
def self.digest(payload, shared_secret)
  Digest::SHA256.base64digest(payload + shared_secret.to_s)
end
notification(post_body, options = {}) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 7
def self.notification(post_body, options = {})
  Notification.new(post_body, options)
end
return(query_string, options = {}) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 11
def self.return(query_string, options = {})
  Return.new(query_string, options)
end
sign(fields, cart_items, shared_secret) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 39
def self.sign(fields, cart_items, shared_secret)
  payload = cart_items_payload(fields, cart_items)

  digest(payload, shared_secret)
end

Private Class Methods

check_required_fields!(fields) click to toggle source
# File lib/offsite_payments/integrations/klarna.rb, line 51
def self.check_required_fields!(fields)
  %w(purchase_country
     purchase_currency
     locale
     merchant_id
     merchant_terms_uri
     merchant_checkout_uri
     merchant_base_uri
     merchant_confirmation_uri).each do |required_field|
    raise ArgumentError, "Missing required field #{required_field}" if fields[required_field].nil?
  end
end