Stéphane Sobucki authored Sep 29, 2021 and hydrargyrum committed Oct 13, 2021

Rework module using the TwoFactorBrowser, in order to make
the module easier to debug.

What's new:
- The AppValidation 2FA method was implemented as it is more robust
as N26 has stated in their documentation. This method is used as a
default and we fallback to OTP by SMS if the user hasn't paired its
device.
- Added Pages instead of doing everything in Number26Browser
- Replaced `request` method by `build_request` as
it was only used to set the headers
- flake8 compatible

Fixes:
- Using an access token generated using the refresh token
gives access to 90 days of transactions only.
- Too many requests error sometimes don't return a json body.
- Clear access_token on 401 errors

droly authored Sep 26, 2019 and hydrargyrum committed Nov 09, 2019

Since n26 added new SCA on its app, their can be only one device paired to an account, other devices will be asked an OTP each time they try to log.

By reversing the app i found that we can use the 'refresh_token', but since it's not used by the app it might be removed.

closes: 13368@zendesk, 13367@zendesk, 13349@zendesk, 13366@zendesk, 13360@zendesk, 13413@zendesk, 13439@zendesk, 13462@zendesk, 13523@zendesk, 13526@zendesk, 13527@zendesk, 13562@zendesk, 13613@zendesk, 13681@zendesk, 13687@zendesk, 13692@zendesk, 13728@zendesk, 13739@zendesk, 13854@zendesk

All copyright holders have given their consent.

(and also update the maintainer's email address)

And tweak the code to pass linting.

autopep8 -a -r -i --select E111 .

Manual check.