From d429ea577fc5af028b0d5f3ed309fc96155e8240 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Sat, 8 Aug 2020 13:02:11 +0530
Subject: switch to merchant backend based payment flow

---
 talermerchantdemos/blog/blog.py | 59 +++--------------------------------------
 1 file changed, 4 insertions(+), 55 deletions(-)

(limited to 'talermerchantdemos/blog/blog.py')

diff --git a/talermerchantdemos/blog/blog.py b/talermerchantdemos/blog/blog.py
index 4b1545f..1e25555 100644
--- a/talermerchantdemos/blog/blog.py
+++ b/talermerchantdemos/blog/blog.py
@@ -1,5 +1,5 @@
 ##
-# This file is part of GNU TALER.
+# This file is part of GNU taler.
 # Copyright (C) 2014-2017 INRIA
 #
 # TALER is free software; you can redistribute it and/or modify it under the
@@ -22,8 +22,6 @@ import logging
 import os
 import traceback
 import uuid
-import qrcode
-import qrcode.image.svg
 import base64
 import flask
 import lxml.etree
@@ -150,26 +148,8 @@ def refund(order_id):
         order_id=order_id, reason="Demo reimbursement", refund=ARTICLE_AMOUNT
     )
     resp = backend_post(BACKEND_URL, "refund", refund_spec)
-    try:
-        # delete from paid article cache
-        paid_articles_cache.delete(session_id + "-" + article_name)
-        taler_refund_uri = resp["taler_refund_uri"]
-        qrcode_svg = get_qrcode_svg(taler_refund_uri)
-        content = flask.render_template(
-            "templates/show_refund.html",
-            article_name=article_name,
-            taler_refund_uri=taler_refund_uri,
-            qrcode_svg=qrcode_svg,
-        )
-        headers = {"Taler": taler_refund_uri}
-        return flask.Response(content, status=402, headers=headers)
-    except KeyError:
-        err_abort(
-            500,
-            message="Response from backend incomplete",
-            json=resp,
-            stack=traceback.format_exc(),
-        )
+    paid_articles_cache.delete(session_id + "-" + article_name)
+    return flask.redirect(pay_status["order_status_url"])
 
 
 ##
@@ -206,23 +186,6 @@ def render_article(article_name, data, order_id):
     )
 
 
-def get_qrcode_svg(data):
-    factory = qrcode.image.svg.SvgImage
-    img = qrcode.make(data, image_factory=factory)
-    return lxml.etree.tostring(img.get_image()).decode("utf-8")
-
-
-##
-# This endpoint is used by the payment request page
-# to check if the payment has been completed via the QR code.
-@app.route("/check-status/<order_id>/<session_id>")
-def check_status(order_id, session_id):
-    pay_status = backend_get(
-        BACKEND_URL, f"private/orders/{order_id}/", dict(session_id=session_id)
-    )
-    return flask.jsonify(paid=pay_status["paid"])
-
-
 ##
 # Trigger a article purchase.  The logic follows the main steps:
 #
@@ -313,18 +276,4 @@ def article(article_name, data=None):
     ##
     # Redirect the browser to a page where the wallet can
     # run the payment protocol.
-    taler_pay_uri = pay_status["taler_pay_uri"]
-    qrcode_svg = get_qrcode_svg(taler_pay_uri)
-    check_status_url_enc = urllib.parse.quote(
-        flask.url_for("check_status", order_id=order_id, session_id=session_id)
-    )
-    content = flask.render_template(
-        "templates/request_payment.html",
-        article_name=article_name,
-        taler_pay_uri=taler_pay_uri,
-        qrcode_svg=qrcode_svg,
-        check_status_url_enc=check_status_url_enc,
-    )
-    headers = {"Taler": taler_pay_uri}
-    resp = flask.Response(content, status=402, headers=headers)
-    return resp
+    return flask.redirect(pay_status["order_status_url"])
-- 
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