Changeset 17215 for main/kofacustom.nigeria/trunk/src/kofacustom/nigeria/interswitch/helpers.py

Timestamp:

13 Dec 2022, 11:39:13 (2 years ago)

Author:

Henrik Bettermann

Message:

Implement Interswitch WebCheckout?. Tests will follow.

File:

• main/kofacustom.nigeria/trunk/src/kofacustom/nigeria/interswitch/helpers.py (modified) (1 diff)

main/kofacustom.nigeria/trunk/src/kofacustom/nigeria/interswitch/helpers.py

@@ -379 +379 @@
     notify(grok.ObjectModifiedEvent(payment))
     return True, msg, log
+
+# Web checkout helper functions
+
+def get_JSON_webcheckout_response(merchant_code, transref, host, url, https, amount):
+    headers={
+        'Content-Type':'text/xml; charset=utf-8',
+    }
+    if https:
+        h = httplib.HTTPSConnection(host)
+    else:
+        h = httplib.HTTPConnection(host)
+    amount = int(100 * amount)
+    args = {'merchantcode': merchant_code,
+            'transactionreference': transref,
+            'amount': amount}
+    url = '%s?' % url + urlencode(args)
+    try:
+        h.request("GET", url, headers=headers)
+    except SSLError:
+        return {'error': 'SSL handshake error'}
+    response = h.getresponse()
+    if response.status!=200:
+        return {'error': 'Connection error (%s, %s)' % (response.status, response.reason)}
+    jsonout = response.read()
+    parsed_json = json.loads(jsonout)
+    return parsed_json
+
+def confirm_transaction(payment, merchant_code, host, url, https=True):
+    jr = get_JSON_webcheckout_response(merchant_code, payment.p_id, host, url,
+                           https, payment.amount_auth)
+    error = jr.get('error')
+    if error:
+        msg = log = error
+        return False, msg, log
+
+    # A typical JSON response ?????????????????
+
+    #  {u'SplitAccounts': [],
+    #  u'MerchantReference':u'p5918633006916',
+    #  u'TransactionDate':u'2020-06-11T09:17:37',
+    #  u'ResponseDescription':u'Customer Cancellation',
+    #  u'Amount': 89525000,
+    #  u'CardNumber': u'',
+    #  u'ResponseCode': u'Z6',
+    #  u'BankCode': u''}
+
+    if not 'ResponseCode' in jr.keys() \
+        or not 'ResponseDescription' in jr.keys() \
+        or not 'Amount' in jr.keys():
+        msg = _('Invalid callback: ${a}', mapping = {'a': str(jr)})
+        log = 'invalid callback for payment %s: %s' % (payment.p_id, str(jr))
+        return False, msg, log
+    payment.r_code = jr['ResponseCode']
+    payment.r_desc = jr['ResponseDescription']
+    payment.r_amount_approved = jr['Amount'] / 100.0
+    payment.r_card_num = jr.get('CardNumber', u'')
+    payment.r_pay_reference = jr.get('PaymentReference', u'')
+    #payment.r_company = u'interswitch'
+    if payment.r_code != '00':
+        msg = _('Unsuccessful callback: ${a}', mapping = {'a': payment.r_desc})
+        log = 'unsuccessful callback for %s payment %s: %s' % (
+            payment.p_category, payment.p_id, payment.r_desc)
+        payment.p_state = 'failed'
+        notify(grok.ObjectModifiedEvent(payment))
+        return False, msg, log
+    if round(payment.r_amount_approved, 0) != round(payment.amount_auth, 0):
+        msg = _('Callback amount does not match.')
+        log = 'wrong callback for %s payment %s: %s' % (
+            payment.p_category, payment.p_id, str(jr))
+        payment.p_state = 'failed'
+        notify(grok.ObjectModifiedEvent(payment))
+        return False, msg, log
+    if jr['MerchantReference'] != payment.p_id:
+        msg = _('Callback transaction id does not match.')
+        log = 'wrong callback for %s payment %s: %s' % (
+            payment.p_category, payment.p_id, str(jr))
+        payment.p_state = 'failed'
+        notify(grok.ObjectModifiedEvent(payment))
+        return False, msg, log
+    payment.p_state = 'paid'
+    if not verify:
+        payment.payment_date = datetime.utcnow()
+    msg = _('Successful callback received')
+    log = 'valid callback for %s payment %s: %s' % (
+        payment.p_category, payment.p_id, str(jr))
+    notify(grok.ObjectModifiedEvent(payment))
+    return True, msg, log