feat: custom wallet URI scheme

[genaris]

A proposal to make wallet deep link URI scheme configurable, so it may not only be used with BC Wallet (bcwallet://) but also with any Aries-capable agent that implements the concept defined in Aries RFC 0268.

It basically consists on using WALLET_DEEP_LINK_PREFIX environment variable on the controller to set the URI scheme and host used as a prefix. For example, 'didcomm://oob-invitation' for URLs such as didcomm://oob-invitation?c_i={base64encoded msg}.

It keeps the default bcwallet://aries_proof-request to make this straightforward for BCGov use case.

I hope you like it as much as we had fun using this project 🎉

[loneil]

We've discussed making this configurable, hadn't gotten around to adding the config so this is exactly what we'd set up. Thanks! 😄

I'll note we use aries_proof-request after the URI scheme, but it doesn't seem to matter to the BC Wallet what that string is. So that could optionally be configurable I guess if other wallets may care about that or something.

[genaris]

We've discussed making this configurable, hadn't gotten around to adding the config so this is exactly what we'd set up. Thanks! 😄

I'll note we use aries_proof-request after the URI scheme, but it doesn't seem to matter to the BC Wallet what that string is. So that could optionally be configurable I guess if other wallets may care about that or something.

Thanks for the comment! Certainly, both BC Wallet and some other apps won't care about the host part of the deep link when using their own custom URI scheme. However, I think you are right and it's worth to make it more flexible from the beginning, so I did some small modifications to convert this environment variable into a complete prefix.

[esune]

LGTM 👍🏻
Thanks @genaris!