module Paygate

# File lib/paygate.rb, line 8
def self.initiate_transaction(paygate_id, encription_key, reference_number, amount, currency, return_url, locale, country, recepient, pay_method)
  d = DateTime.now
  current_time = d.strftime("%Y-%m-%d %H:%M:%S")
  
  data = {
    PAYGATE_ID: paygate_id,
    REFERENCE: "#{reference_number}",
    AMOUNT: amount.to_i * 100,
    CURRENCY: currency,
    RETURN_URL: "#{return_url}",
    TRANSACTION_DATE: current_time,
    LOCALE: "#{locale}",
    COUNTRY: "#{country}",
    EMAIL: "#{recepient}",
    PAY_METHOD: "#{pay_method}"
  }

  a = data.map{|k,v| "#{v}"}.join('')

  checksum = Digest::MD5.hexdigest("#{a}#{encription_key}")

  data[:CHECKSUM] = checksum
  fields_string = data.to_query

  response = HTTParty.post("https://secure.paygate.co.za/payweb3/initiate.trans", {
    body: fields_string,
    headers: {
      'Content-Type' => 'application/x-www-form-urlencoded',
      'charset' => 'utf-8'
    }
  })

  pay_request_id = response.split("&PAY_REQUEST_ID=")[1].split("&REFERENCE")[0]
  checkusm_from_response = response.split("&CHECKSUM=")[1]
  
  paygate_response = {
    :pay_request_id => pay_request_id,
    :checkusm_from_response => checkusm_from_response
  }


end