Add api to update a customer payment methods

[mattiaz9]

This could be useful to integrate in some applications using subscriptions, where a customer can update a payment method that is not longer valid, or add a new one as backup.
I know stripe has those apis, so can it be done in Polar?

[birkjernstrom]

We do offer this within the customer portal today on Polar. However, we cannot expose it a pure API for security reasons, but our intent is to ship all end-customer facing components on Polar as standalone React packages to easily self-host, embed and customize such forms, but then being able to set it up so no requests/data is passed insecurely at any point.

This is part of our v2.0 roadmap/vision for Polar that can be found here:
#5227

[mattiaz9]

Self-hosting is a nice to have feature, but it looks like it's long down the road, plus it's not clear how customizable is it. Can I completely change the layout or just the style?

Also I don't see how the APIs are unsafe. If stripe offers those api I don't understand why you guy shouldn't. Am I missing something?