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kass-flow

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kass-flow

Library to manage payments using the KASS API

    0.2.6

Maintainers
1

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Kass Flow

Helper for the KASS <https://www.kass.is/>_ payment gateway. Written for python 3.8.5 (probably works on versions >= 3.6).

See the KASS API docs <https://kass.github.io/api/>_ for more info.

This module is not affiliated with KASS.

TODO

  • Create payment
  • Retreive payment info
  • Retreive payment status
  • Cancel payment
  • Add concurrency with RQ when dispatching multiple payments

Usage

Here is a short guide to get you started.

This will dispatch a payment to the KASS API.

.. code-block:: sh

poetry add kass-flow

or

pip install kass-flow

.. code-block:: python

from kass_flow.kass import KassBilling from kass_flow.interfaces import KassRequestPaymentDict

kass_token: str = "some-token" kass_url: str = "https://api.kass.is/v1/payments" instance = KassBilling(kass_token, kass_url)

payload: KassRequestPaymentDict = { "amount": 2199, "description": "Kass bolur", "image_url": "https://photos.kassapi.is/kass/kass-bolur.jpg", "order": "ABC123", "recipient": "7798217", "terminal": 1, "expires_in": 90, "notify_url": "https://example.com/callbacks/kass", }

result, is_valid = instance.dispatch(payload)

When the recipient cancels or pays the requested order KASS will send a callback to the notify_url\ , which you need to catch on your server and probably validate the signature that is included in the POST payload.

At some point in time the user will pay/reject the requested order. Here is an example on how to validate the payload.

.. code-block:: python

from kass_flow.kass import KassBilling from kass_flow.interfaces import KassRequestPaymentDict

def some_view_that_handles_kass_callback(request): payload = request.data kass_token: str = "some-token" kass_url: str = "https://api.kass.is/v1/payments" instance = KassBilling(kass_token, kass_url)

   if instance.is_signature_valid(payload):
       # process the payload.

Development

.. code-block:: sh

pip install poetry # to manage envs yourself poetry config virtualenvs.create false poetry install pytest tests

If you are using VSCode for development there is a .vscode/settings.example.json for sensible defaults. Since mypy is used you need to install the mypyls language server.

.. code-block::

poetry install "https://github.com/matangover/mypyls/archive/master.zip#egg=mypyls[default-mypy]"

or

pip install "https://github.com/matangover/mypyls/archive/master.zip#egg=mypyls[default-mypy]"

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