## Script (Python) "interswitch_cb2"
##bind container=container
##bind context=context
##bind namespace=
##bind script=script
##bind subpath=traverse_subpath
##parameters=
##title=
##
# $Id: interswitch_cb2.py 5182 2010-04-30 14:12:57Z henrik $
"""
payment callback
"""
try:
    from Products.zdb import set_trace
except:
    def set_trace():
        pass
import logging
logger = logging.getLogger('Skins.interswitch_cb2')
from AccessControl import Unauthorized
import DateTime

if context.portal_membership.isAnonymousUser():
    return None

request = context.REQUEST
students = context.portal_url.getPortalObject().campus.students
wftool = context.portal_workflow
mtool = context.portal_membership
member = mtool.getAuthenticatedMember()
member_id = str(member)
#student_id = context.getStudentId()
access_info = context.waeup_tool.getAccessInfo(context)
student_id = access_info['student_id']
if not context.isSectionOfficer() and (student_id is None or student_id != member_id):
    logger.info('%s tried to access payment object of %s' % (member_id,student_id))
    referer = request.get('HTTP_REFERER','none')
    logger.info('%s:%s illegal access, referer = %s' % (member_id,student_id,referer))
    real_ip = request.get('HTTP_X_REAL_IP',"none")
    logger.info('%s:%s illegal access, real_x_ip = %s' % (member_id,student_id,real_ip))
    return context.REQUEST.RESPONSE.redirect("%s/srp_anonymous_view" % context.portal_url())

referer = request.get('HTTP_REFERER','none')
real_ip = request.get('HTTP_X_REAL_IP',"none")  
logger.info('%s, callback referer = %s, IP = %s' % (student_id,referer,real_ip))

if not 'webpay.interswitchng.com' in referer and not 'waeup.org' in referer:
    logger.info('%s, wrong callback referer %s, callback rejected, IP = %s' % (student_id,referer,real_ip))
    return request.RESPONSE.redirect("%s/waeup_document_view" % context.absolute_url())

student = getattr(students,student_id)
resp_codes = (("desc","resp_desc"),
              ("resp","resp_code"),
              ("txnRef","pay_reference"),
              ("payRef","resp_pay_reference"),
              ("retRef","retRef"),
              ("cardNum","resp_card_num"),
              ("apprAmt","resp_approved_amount"),
              )
pd = {}
for rc,pdk in resp_codes:
    pd[pdk] = request.get(rc,'')

## for testing purposes
#pd['resp_desc'] = 'Simulated Callback'
#pd['resp_pay_reference'] = 'XXXX'
#pd['resp_code'] = '00'
#pd['resp_card_num'] = '0000'
#pd['resp_approved_amount'] = '99999999999999'

if pd['resp_code'] == '00' and len(pd['resp_approved_amount']) > 4:
    pd['resp_approved_amount'] = pd['resp_approved_amount'][:-2]
    pd['status'] = 'paid'
else:
    pd['resp_approved_amount'] = '0'
    pd['status'] = 'failed'

review_state = wftool.getInfoFor(context,'review_state',None)
if pd['resp_code'] == '':
    logger.info('%s requeried payment %s for %s and got empty response' % (member,context.getId(),student_id))
    return request.RESPONSE.redirect("%s/waeup_document_view" % context.absolute_url())
if access_info['is_student'] and review_state == 'closed':
    wftool.doActionFor(context,'open')
pay_doc = context.getContent()
resp = pd['resp_code']  

if  resp == '00':
    try:
        amount = int(getattr(pay_doc,'amount',0))
        surcharge = int(getattr(pay_doc,'surcharge',0))
        resp_approved_amount = int(pd['resp_approved_amount'])
        #set_trace()
        if amount + surcharge != resp_approved_amount:
            logger.info('Warning: %s, approved amount %s and authorized amount %s are different for payment %s of %s' % (member,resp_approved_amount,amount+surcharge,context.getId(),student_id))
            pd['status'] = 'failed'
            pd['resp_desc'] = 'Warning: approved amount in callback does not match!'
            resp = ''
        else:
            pass
    except:
        logger.info('%s: approved amount could not be verified for payment %s of %s' % (member,context.getId(),student_id))
        pd['status'] = 'failed'
        pd['resp_desc'] = 'Warning: approved amount could not be verified!'
        resp = ''    

pay_doc.edit(mapping = pd)

if  resp == '00':
    logger.info('%s received valid callback' % student_id)
    logger.info('%s paid second instalment' % student_id)
else:
    logger.info('%s received unsuccessful callback: %s' % (student_id,pd['resp_desc']))

review_state = wftool.getInfoFor(context,'review_state',None)
if review_state == 'opened':
    wftool.doActionFor(context,'close')

return request.RESPONSE.redirect("%s/waeup_document_view" % context.absolute_url())