module OffsitePayments::Integrations::Webmoney::Common

def generate_signature
  Digest::MD5.hexdigest(generate_signature_string).upcase
end

def generate_signature_string
  "#{params['LMI_PAYEE_PURSE']}#{params['LMI_PAYMENT_AMOUNT']}#{params['LMI_PAYMENT_NO']}#{params['LMI_MODE']}#{params['LMI_SYS_INVS_NO']}#{params['LMI_SYS_TRANS_NO']}#{params['LMI_SYS_TRANS_DATE']}#{secret}#{params['LMI_PAYER_PURSE']}#{params['LMI_PAYER_WM']}"
end