Add Mollie as a payment gateway

[mg-1999]

In the Netherlands we use iDEAL for almost all of our online transactions and not everyone has a creditcard. In Belgium is it almost the same, but they use Bankcontact there. It also adds the option to add the main online payment methods of France and Italy. And handle SEPA-transactions with automatic callbacks.

All of this is in mollie and would be a great addition to the creditcard payment processors.

@cbellone suggested that I already do some digging in the flow and found a nice api doc and flow graphic. Source: https://www.mollie.com/nl/docs/overview

Also noticed that there is an api available right here: https://github.com/stil4m/mollie-api

Hope that this is a good start for a nice addition.

• Matthijs

[syjer]

Hi @mg-1999 , thanks for opening the issue, the flow seems similar to the paypal one, I guess it should not be too hard to integrate it. I hope that they have some kind of test accounts :)

[mg-1999]

You can open a test account and you don't have to verify anything

[syjer]

cool :+1: thank you. I'll have a look :)

[mg-1999]

Is there any help that I can provide?

[syjer]

@mg-1999 , I think I have all the necessary informations to implement it :). Thank you :)

[syjer]

The work is in progress.

TODO:

• [x] when the reservation has been created, set to a processing status and then wait for the webhook to be called
• [ ] webhook for handling the state transition
• [x] admin: don't let the user select mollie if the event is not paid in €
• [ ] client ui: handle the "processing" state of the reservation
• [ ] handle refund

[cbellone]

As of https://github.com/alfio-event/alf.io/commit/648ef6b80041c09f14dd3fbc6b86e4581dadf625, this can be considered implemented