Paratika/lib/paratika/request.rb

# frozen_string_literal: true
require 'net/http'
module Paratika
  class Request
    # attr_reader :order_id, :currency, :amount, :action, :customer, :order_summary
    attr_reader :time, :language, :protocol_version
    attr_reader :merchant, :merchant_user, :merchant_password
    # attr_reader :action

    TRANSACTION_TYPES = [
      'PREAUTH', # Pre Authorization
      'SALE', # Charge
      'VOID', # Cancel
      'REFUND', # Refund
      'QUERYCARD', # Cards
      'EWALLETDELETECARD', # Delete Card
      'CURRENCYEXCHANGE', # Currency Exchange
    ]

    PROTOCOL_VERSIONS = [
      '2.0'
    ]
    
    CURRENCIES = [
      'USD', 'GBP', 'EUR', 'TRY',
      'CHF', 'MXN', 'ARS', 'SAR', 'ZAR', 'INR', 'CNY', 'AUD', 'ILS', 'JPY', 'PLN', 'BOB', 'IDR', 'HUF', 'KWD', 'RUB', 'AED', 'RSD', 'DKK', 'COP', 'CAD', 'BGN', 'NOK', 'RON', 'CZK', 'SEK', 'NZD', 'BRL', 'BHD'
    ]

    def initialize(language: 'EN',
                   protocol_version: '2.0',
                   time: DateTime.now)

      @language = language.to_s.upcase
      @protocol_version = validate(protocol_version.to_s, of: PROTOCOL_VERSIONS)
      @time = time

      @merchant = Paratika.config.merchant_id
      @merchant_user = Paratika.config.merchant_user
      @merchant_password = Paratika.config.merchant_password 
    end

    def decorate
      self.as_json.except!('language', 'protocol_version', 'time')
      .merge!({ "action" => self.class.name.demodulize.upcase })
      .transform_keys!{ |k| k.gsub('_', '').upcase }
    end

    def send
      Paratika::Response.new Net::HTTP.post_form(self.url, self.decorate)
    end

    private

    def url
      URI("#{Paratika.config.url}/paratika/api/v2")
    end

    def validate(value, of:)
      unless of.include?(value)
        raise ArgumentError, "Expected one of #{of.inspect}, got: #{value.inspect}"
      end
      value
    end

    def validate_money(value)
      unless value.is_a?(BigDecimal) && value >= 0.01 && value.scale <= 2
        raise ArgumentError, "Expected BigDecimal value with max scale 2, got: #{value.inspect}"
      end
      "%.2f" % value
    end

    def validate_integer(value)
      if !value.is_a? Integer
        raise ArgumentError, "Value must be an Integer, got: #{value.inspect}"
      end
      value
    end

    def validate_presence(value)
      if !value.is_a?(Numeric) && value.blank?
        raise ArgumentError, "Expected not blank or nil value, got: #{value.inspect}"
      end
      value
    end

    def validate_hash(value)
      if !value.is_a? Hash
        raise ArgumentError, "Expected Hash, got: #{value.inspect}"
      end
      value
    end

  end
end