Class: Effective::HelcimApi

Inherits:
Object
  • Object
show all
Defined in:
app/models/effective/helcim_api.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(environment: nil) ⇒ HelcimApi

Returns a new instance of HelcimApi.



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# File 'app/models/effective/helcim_api.rb', line 16

def initialize(environment: nil)
  self.environment = EffectiveOrders.helcim.fetch(:environment)
  self.api_token = EffectiveOrders.helcim.fetch(:api_token)
  self.partner_token = EffectiveOrders.helcim.fetch(:partner_token)
  self.currency = EffectiveOrders.helcim.fetch(:currency)
  self.brand_color = EffectiveOrders.helcim.fetch(:brand_color)
  self.fee_saver = EffectiveOrders.helcim.fetch(:fee_saver)
end

Instance Attribute Details

#api_token ⇒ Object

Returns the value of attribute api_token.



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# File 'app/models/effective/helcim_api.rb', line 7

def api_token
  @api_token
end

#brand_color ⇒ Object

Returns the value of attribute brand_color.



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# File 'app/models/effective/helcim_api.rb', line 10

def brand_color
  @brand_color
end

#currency ⇒ Object

Returns the value of attribute currency.



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# File 'app/models/effective/helcim_api.rb', line 9

def currency
  @currency
end

#environment ⇒ Object

All required



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# File 'app/models/effective/helcim_api.rb', line 6

def environment
  @environment
end

#fee_saver ⇒ Object

Returns the value of attribute fee_saver.



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# File 'app/models/effective/helcim_api.rb', line 11

def fee_saver
  @fee_saver
end

#last_response ⇒ Object

Returns the value of attribute last_response.



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# File 'app/models/effective/helcim_api.rb', line 14

def last_response
  @last_response
end

#partner_token ⇒ Object

Returns the value of attribute partner_token.



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# File 'app/models/effective/helcim_api.rb', line 8

def partner_token
  @partner_token
end

#read_timeout ⇒ Object

Returns the value of attribute read_timeout.



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# File 'app/models/effective/helcim_api.rb', line 13

def read_timeout
  @read_timeout
end

Instance Method Details

#card_info(payment) ⇒ Object

Takes a payment_intent and returns the card info we can store



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# File 'app/models/effective/helcim_api.rb', line 165

def card_info(payment)
  # Return the authorization params merged with the card info
  last4 = payment['cardNumber'].to_s.last(4)
  card = payment['cardType'].to_s.downcase

  active_card = "**** **** **** #{last4} #{card}" if last4.present?

  { 'active_card' => active_card, 'card' => card }.compact
end

#decode_payment_payload(payload) ⇒ Object

Decode the base64 encoded JSON object that was given from the form into a Hash



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# File 'app/models/effective/helcim_api.rb', line 113

def decode_payment_payload(payload)
  return if payload.blank?

  raise('expected a string') unless payload.kind_of?(String)

  payment = (JSON.parse(Base64.decode64(payload)) rescue nil)
  raise('expected payment to be a Hash') unless payment.kind_of?(Hash)

  payment = payment.dig('data', 'data')
  raise('expected payment data') unless payment.kind_of?(Hash)
  raise('expected payment data with a transactionId') unless payment['transactionId'].present?

  payment
end

#get(endpoint, params: nil) ⇒ Object 



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# File 'app/models/effective/helcim_api.rb', line 175

def get(endpoint, params: nil)
  query = ('?' + params.compact.map { |k, v| "$#{k}=#{v}" }.join('&')) if params.present?

  uri = URI.parse(api_url + endpoint + query.to_s)

  http = Net::HTTP.new(uri.host, uri.port)
  http.read_timeout = (read_timeout || 30)
  http.use_ssl = true

  self.last_response = nil

  result = with_retries do
    puts "[GET] #{uri}" if Rails.env.development?

    response = http.get(uri, headers)
    raise Exception.new("#{response.code} #{response.body}") unless response.code == '200'

    response
  end

  self.last_response = result

  JSON.parse(result.body)
end

#get_transaction(id) ⇒ Object 



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# File 'app/models/effective/helcim_api.rb', line 29

def get_transaction(id)
  get("/card-transactions/#{id}")
end

#health_check ⇒ Object 



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# File 'app/models/effective/helcim_api.rb', line 25

def health_check
  get('/connection-test')
end

#initialize_request(order) ⇒ Object

Make the Preload Request devdocs.helcim.com/reference/checkout-init



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# File 'app/models/effective/helcim_api.rb', line 35

def initialize_request(order)
  params = {
    amount: ('%.2f' % order.total_to_f),
    currency: currency,
    paymentType: 'purchase',   # purchase, preauth, verify
    paymentMethod: (fee_saver ? 'cc-ach' : 'cc'),
    hasConvenienceFee: (fee_saver ? 1 : 0),
    allowPartial: 0,
    taxAmount: ('%.2f' % order.tax_to_f if order.tax.to_i > 0),
    hideExistingPaymentDetails: 0,
    setAsDefaultPaymentMethod: 1,
    confirmationScreen: false,
    displayContactFields: 0,
    customStyling: {
      brandColor: (brand_color || '815AF0')
    },
    invoiceRequest: {
      invoiceNumber: '#' + order.to_param
    },
    customerRequest: {
      contactName: order.billing_name,
      businessName: order.organization.to_s.presence,
    }.compact,
  }.compact

  params[:invoiceRequest][:lineItems] = order.order_items.map do |item|
    {
      description: item.name,
      quantity: item.quantity,
      price: ('%.2f' % item.price_to_f),
      total: ('%.2f' % item.subtotal_to_f),
      taxAmount: ('%.2f' % item.tax_to_f),
    }
  end

  address = order.billing_address
  country = helcim_country(address&.country_code)

  if address.present? && country.to_s.length == 3
    params[:customerRequest][:billingAddress] = {
      name: order.billing_name,
      street1: address.address1,
      street2: address.address2,
      city: address.city,
      province: address.state_code,
      country: country,
      postalCode: address.postal_code,
      email: order.email,
    }
  end

  address = order.shipping_address
  country = helcim_country(address&.country_code)

  if address.present? && country.to_s.length == 3
    params[:customerRequest][:shippingAddress] = {
      name: order.billing_name,
      street1: address.address1,
      street2: address.address2,
      city: address.city,
      province: address.state_code,
      country: country,
      postalCode: address.postal_code,
      email: order.email,
    }
  end

  response = post('/helcim-pay/initialize', params: params)
  raise("expected response to be a Hash") unless response.kind_of?(Hash)

  token = response['checkoutToken']
  raise("expected response to include a checkoutToken") unless token.present?

  # Return the token to the front end form
  token
end

#post(endpoint, params:) ⇒ Object

Raises:

  • (Exception) 


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# File 'app/models/effective/helcim_api.rb', line 200

def post(endpoint, params:)
  uri = URI.parse(api_url + endpoint)

  http = Net::HTTP.new(uri.host, uri.port)
  http.read_timeout = (read_timeout || 30)
  http.use_ssl = true

  self.last_response = nil

  puts "[POST] #{uri} #{params}" if Rails.env.development?

  response = http.post(uri.path, params.to_json, headers)
  raise Exception.new("#{response.code} #{response.body}") unless response.code == '200'

  self.last_response = response

  JSON.parse(response.body)
end

#purchased?(payment) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/effective/helcim_api.rb', line 128

def purchased?(payment)
  raise('expected a payment Hash') unless payment.kind_of?(Hash)
  (payment['status'] == 'APPROVED' && payment['type'] == 'purchase')
end

#set_logo!(path: nil) ⇒ Object

Effective::HelcimApi.new.set_logo! Put your file in the apps/tenant/app/assets/images/tenant/helcim-logo.png Run this once to set the logo

Raises:

  • (Exception) 


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# File 'app/models/effective/helcim_api.rb', line 222

def set_logo!(path: nil)
  path ||= Rails.root.join("apps/#{Tenant.current}/app/assets/images/#{Tenant.current}/helcim-logo.png")
  raise("Expected #{path} to exist") unless File.exist?(path)

  url = URI.parse(api_url + '/branding/logo')
  boundary = "AaB03x"

  # Build multipart form data
  body = [
    "--#{boundary}",
    "Content-Disposition: form-data; name=\"logo\"; filename=\"#{File.basename(path)}\"",
    "Content-Type: image/#{File.extname(path).downcase.delete('.')}",
    "",
    File.binread(path),
    "--#{boundary}--"
  ].join("\r\n")

  # Set up HTTP request
  http = Net::HTTP.new(url.host, url.port)
  http.use_ssl = true
  
  # Create POST request
  request = Net::HTTP::Post.new(url.path)
  request.body = body

  request.initialize_http_header(headers.merge({
    'Content-Type' => "multipart/form-data; boundary=#{boundary}",
    'Content-Length' => request.body.length.to_s,
  }))

  # Send request
  response = http.request(request)
  raise Exception.new("#{response.code} #{response.body}") unless response.code == '200'

  JSON.parse(response.body)
end

#verify_payment(order, payment_payload) ⇒ Object

Considers the insecure payment_payload, requests the real transaction from Helcim and verifies it vs the order



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# File 'app/models/effective/helcim_api.rb', line 134

def verify_payment(order, payment_payload)
  raise('expected a payment_payload Hash') unless payment_payload.kind_of?(Hash)

  transaction_id = payment_payload['transactionId']
  raise('expected a payment_payload with a transactionId') unless transaction_id.present?

  payment = get_transaction(transaction_id)
  raise('expected an existing card-transaction payment') unless payment.kind_of?(Hash)

  # Compare the payment (trusted truth) and the payment_payload (untrusted)
  if payment['transactionId'].to_s != payment_payload['transactionId'].to_s
    raise('expected the payment and payment_payload to have the same transactionId')
  end

  # Validate order ids
  if payment['invoiceNumber'].to_s != '#' + order.to_param
    raise("expected card-transaction invoiceNumber to be the same as the order to_param")
  end

  # Validate amounts if purchased
  if purchased?(payment) && (amount = payment['amount'].to_f) != (amountAuthorized = order.total_to_f)
    raise("expected card-transaction amount #{amount} to be the same as the amountAuthorized #{amountAuthorized} but it was not")
  end

  # Normalize the card info and scrub out the card number
  payment = payment.merge(card_info(payment)).except('cardNumber')

  payment
end