## $Id: browser.py 8020 2012-04-02 11:05:40Z henrik $
##
## Copyright (C) 2012 Uli Fouquet & Henrik Bettermann
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##
from datetime import datetime
import httplib
import urllib
from xml.dom.minidom import parseString
import grok
from waeup.kofa.browser.layout import KofaPage, UtilityView
from waeup.kofa.students.interfaces import IStudentOnlinePayment
from waeup.kofa.students.browser import write_log_message
from waeup.kofa.students.viewlets import RequestCallbackActionButton
from waeup.uniben.interfaces import MessageFactory as _
from waeup.uniben.utils.utils import actions_after_payment

TERMINAL_ID = '0000000001'
QUERY_URL =   'http://demo.etranzact.com:8080/WebConnect/queryPayoutletTransaction.jsp'

class EtranzactEnterPinActionButton(RequestCallbackActionButton):
    grok.order(5)
    icon = 'actionicon_call.png'
    text = _('Query eTranzact History')
    target = 'enterpin'

class EtranzactEnterPinPage(KofaPage):
    """
    """
    grok.context(IStudentOnlinePayment)
    grok.name('enterpin')
    grok.template('enterpin')
    grok.require('waeup.payStudent')

    buttonname = _('Submit to eTranzact')
    label = _('Requery eTranzact History')
    action = 'query_history'

class EtranzactQueryHistoryPage(UtilityView, grok.View):
    """ Query history of eTranzact payments
    """
    grok.context(IStudentOnlinePayment)
    grok.name('query_history')
    grok.require('waeup.payStudent')

    def update(self, confirmation_number=None):
        if self.context.p_state == 'paid':
            self.flash(_('This ticket has already been paid.'))
            return
        student = self.context.getStudent()
        postdict = {}
        postdict['TERMINAL_ID'] = TERMINAL_ID
        #postdict['RESPONSE_URL'] = 'http://dummy'
        postdict['CONFIRMATION_NO'] = confirmation_number
        data = urllib.urlencode(postdict)
        try:
            f = urllib.urlopen(url=QUERY_URL, data=data)
            success = f.read()
            if '-1' in success:
                self.flash(_('Unsuccessful callback'))
                write_log_message(self,'unsuccessful callback: %s' % self.context.p_id)
                self.context.p_state = 'failed'
                return
            success = success.replace('%20',' ').split('&')
            # We expect at least two parameters
            if len(success) < 2:
                self.flash(_('Invalid callback: ${a}',
                    mapping = {'a': success}))
                write_log_message(self,'invalid callback: %s' % self.context.p_id)
                self.context.p_state = 'failed'
                return
            try:
                success_dict = dict([tuple(i.split('=')) for i in success])
            except ValueError:
                self.flash(_('Invalid callback: ${a}',
                    mapping = {'a': success}))
                write_log_message(self,'invalid callback: %s' % self.context.p_id)
                self.context.p_state = 'failed'
                return
        except IOError:
            self.flash(_('eTranzact IOError'))
            return
        write_log_message(self,'callback received: %s' % success)

        self.context.r_code = u'ET'
        self.context.r_desc = u'%s' % success_dict.get('TRANS_DESCR')
        self.context.r_amount_approved = float(success_dict.get('TRANS_AMOUNT',0.0))
        self.context.r_card_num = None
        self.context.r_pay_reference = u'%s' % success_dict.get('RECEIPT_NO')
        
        if self.context.r_amount_approved != self.context.amount_auth:
            self.flash(_('Wrong amount'))
            write_log_message(
                self,'successful callback but wrong amount: %s'
                % self.context.p_id)
            self.context.p_state = 'failed'
            return

        if success_dict.get('PAYMENT_CODE') != self.context.p_id:
            self.flash(_('Wrong transaction id'))
            write_log_message(
                self,'successful callback but wrong transaction id: %s'
                % self.context.p_id)
            self.context.p_state = 'failed'
            return

        write_log_message(self,'successful callback: %s' % self.context.p_id)

        self.context.p_state = 'paid'
        self.context.payment_date = datetime.now()

        actions_after_payment(student, self.context, self)

        return

    def render(self):
        self.redirect(self.url(self.context, '@@index'))
        return