Class: SepayPgRuby::Checkout

Inherits:
Object
  • Object
show all
Defined in:
lib/sepay_pg_ruby/checkout.rb

Constant Summary collapse

SIGNABLE_FIELDS = 
[
  'merchant',
  'operation',
  'payment_method',
  'order_amount',
  'currency',
  'order_invoice_number',
  'order_description',
  'customer_id',
  'success_url',
  'error_url',
  'cancel_url',
  'order_id',
  'agreement_id',
  'agreement_name',
  'agreement_type',
  'agreement_payment_frequency',
  'agreement_amount_per_payment'
].freeze

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ Checkout

Returns a new instance of Checkout.



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# File 'lib/sepay_pg_ruby/checkout.rb', line 26

def initialize(client)
  @client = client
end

Instance Method Details

#init_checkout_url ⇒ Object 



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# File 'lib/sepay_pg_ruby/checkout.rb', line 30

def init_checkout_url
  "#{@client.base_checkout_url}/init"
end

#init_one_time_payment_fields(fields) ⇒ Object 



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# File 'lib/sepay_pg_ruby/checkout.rb', line 34

def init_one_time_payment_fields(fields)
  payload = fields.transform_keys(&:to_s).dup
  payload['merchant'] = @client.merchant_id
  payload['operation'] ||= 'PURCHASE'
  payload['signature'] = sign_fields(payload)
  payload
end

#sign_fields(fields) ⇒ Object 



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# File 'lib/sepay_pg_ruby/checkout.rb', line 42

def sign_fields(fields)
  normalized = fields.transform_keys(&:to_s)
  signed = []

  # We must iterate over the keys in the order they were added to the hash
  # to match the insertion-order behavior of the Node.js SDK
  normalized.keys.each do |field|
    next unless SIGNABLE_FIELDS.include?(field)
    next if normalized[field].nil?

    signed << "#{field}=#{normalized[field]}"
  end

  digest = OpenSSL::HMAC.digest('sha256', @client.secret_key, signed.join(','))
  Base64.strict_encode64(digest)
end