module OffsitePayments::Integrations::Klarna
Public Class Methods
cart_items_payload(fields, cart_items)
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# 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)
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# 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 = {})
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# 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 = {})
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# 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)
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# 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)
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# 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