###########################################################
#                                                         #
#  D I S C L A I M E R                                    #
#                                                         #
#  WARNING: ANY USE BY YOU OF THE SAMPLE CODE PROVIDED    #
#  IS AT YOUR OWN RISK.                                   #
#                                                         #
#  The code is  provided  "as is" without                 #
#  warranty of any kind, either express or implied,       #
#  including but not limited to the implied warranties    #
#  of merchantability and/or fitness for a particular     #
#  purpose.                                               #
#                                                         #
#                                                         #
###########################################################



require 'rubygems'
require 'curb'
require 'uri'
require 'addressable/uri'



class GwApi

    def initialize()
        @login = {}
        @order = {}
        @billing = {}
        @shipping = {}
        @responses = {}
    end

    def setLogin(username,password)
        @login['password'] = password
        @login['username'] = username
    end

    def setOrder( orderid, orderdescription, tax, shipping, ponumber,ipadress)
        @order['orderid'] = orderid;
        @order['orderdescription'] = orderdescription
        @order['shipping'] = "%.2f" % shipping
        @order['ipaddress'] = ipadress
        @order['tax'] = "%.2f" % tax
        @order['ponumber'] = ponumber
    end

    def setBilling(
            firstname,
            lastname,
            company,
            address1,
            address2,
            city,
            state,
            zip,
            country,
            phone,
            fax,
            email,
            website)
        @billing['firstname'] = firstname
        @billing['lastname']  = lastname
        @billing['company']   = company
        @billing['address1']  = address1
        @billing['address2']  = address2
        @billing['city']      = city
        @billing['state']     = state
        @billing['zip']       = zip
        @billing['country']   = country
        @billing['phone']     = phone
        @billing['fax']       = fax
        @billing['email']     = email
        @billing['website']   = website
    end

    def setShipping(firstname,
            lastname,
            company,
            address1,
            address2,
            city,
            state,
            zipcode,
            country,
            email)
        @shipping['firstname'] = firstname
        @shipping['lastname']  = lastname
        @shipping['company']   = company
        @shipping['address1']  = address1
        @shipping['address2']  = address2
        @shipping['city']      = city
        @shipping['state']     = state
        @shipping['zip']       = zipcode
        @shipping['country']   = country
        @shipping['email']     = email

    end

    def doSale(amount, ccnumber, ccexp, cvv='')

        query  = ""
        # Login Information

        query = query + "username=" + URI.escape(@login['username']) + "&"
        query += "password=" + URI.escape(@login['password']) + "&"
        # Sales Information
        query += "ccnumber=" + URI.escape(ccnumber) + "&"
        query += "ccexp=" + URI.escape(ccexp) + "&"
        query += "amount=" + URI.escape("%.2f" %amount) + "&"
        if (cvv!='')
            query += "cvv=" + URI.escape(cvv) + "&"
        end

        # Order Information
        @order.each do | key,value|
            query += key +"=" + URI.escape(value) + "&"
        end

        # Billing Information
        @billing.each do | key,value|
            query += key +"=" + URI.escape(value) + "&"
        end
        # Shipping Information

        @shipping.each do | key,value|
            query += key +"=" + URI.escape(value) + "&"
        end

        query += "type=sale"
        return doPost(query)
    end


    def doPost(query)


        curlObj = Curl::Easy.new("https://payzang.transactiongateway.com/api/transact.php")
        curlObj.connect_timeout = 30
        curlObj.timeout = 30
        curlObj.header_in_body = false
        curlObj.ssl_verify_peer=false
        curlObj.post_body = query
        curlObj.perform()
        data = curlObj.body_str

        # NOTE: The domain name below is simply used to create a full URI to allow URI.parse to parse out the query values
        # for us. It is not used to send any data
        data = '"https://payzang.transactiongateway.com/api/transact.php?' + data
        uri = Addressable::URI.parse(data)
        @responses = uri.query_values
        return @responses['response']
    end

    def getResponses()
        return @responses
    end
end

gw = GwApi.new()
# NOTE: your username and password should replace the ones below
gw.setLogin("demo", "password");

gw.setBilling("John","Smith","Acme, Inc.","123 Main St","Suite 200", "Beverly Hills",
        "CA","90210","US","555-555-5555","555-555-5556","support@example.com",
        "www.example.com")

gw.setShipping("Mary","Smith","na","124 Shipping Main St","Suite Ship", "Beverly Hills",
        "CA","90210","US","support@example.com")

gw.setOrder("1234","Big Order",1, 2, "PO1234","65.192.14.10")

r = gw.doSale("5.00","4111111111111111","1212",'999')
myResponses = gw.getResponses

print myResponses['response'] + "  "

if (myResponses['response'] == '1')
    print "Approved \n"
elsif (myResponses['response'] == '2')
    print "Declined \n"
elsif (myResponses['response'] == '3')
    print "Error \n"
end