Add a /redeem route

[futurepaul]

We have three (THREE!) new ways to get money into mutiny in PRs currently:

https://github.com/MutinyWallet/mutiny-web/pull/885 https://github.com/MutinyWallet/mutiny-web/pull/891 https://github.com/MutinyWallet/mutiny-web/pull/837

All three work on the premise of you pasting in something, and then you see some sort of preview, and then you click a button and get the money. (Potentially gifting can work like this as well, although rn it has its own path / ux)

LnurlW is a bit different because it can, optionally, have an editable receive amount, afaik cashu and fedi oob will always be fixed amounts.

I plan on building the /redeem route to unify these, just wanted to make this a discussion issue of any thoughts / gotchas I might need to have in mind when trying to unify the UX here.

@oleonardolima @elnosh @tompro any thoughts / special considerations I should be aware of?

[elnosh]

not sure where/how it should be handled but wondering about cases where the amount of the cashu token pasted is very low. Should we show a warning or something instead of a redeem button if the amount is too low?

[oleonardolima]

[...] afaik cashu and fedi oob will always be fixed amounts.

yes, at least for fedimint the oob's have fixed amounts

[...] I plan on building the /redeem route to unify these, just wanted to make this a discussion issue of any thoughts / gotchas I might need to have in mind when trying to unify the UX here.

I don't have any specific thoughts about it, and I agree that unifying it would be better.

The only thing is that currently, OOB would only work with copy/paste and not through QR, could that lead to bad UX somehow ? 🤔

[benthecarman]

@elnosh what would too low mean, it's all burned to fees?

[elnosh]

maybe something below 5 sats. That could end up going most of it in fees.

[tompro]

I just noticed that current LNUrlW implementation does not give access to the invoice that is processed. Showing a QR (that is never used) does not make much sense during processing. It will need access to the tx to show the exact received amt in the success screen later though.

[EthnTuttle]

not sure where/how it should be handled but wondering about cases where the amount of the cashu token pasted is very low. Should we show a warning or something instead of a redeem button if the amount is too low?

You can just offer to trust the origin mint and do a swap instead of melting the cashu to LN. Then no fees.