Profile pictures in notifications

[max-baz]

I'd love to have a profile picture of a sender in the desktop notification (if they have it). For that to work, I assume the avatars would need to be stored on disk.

Then we'd be able to pass them to Notification::new().summary(summary).body(text).image_path(avatar_path).show() like so.

I couldn't find anything about profiles in the code, how difficult do you think it would be to get the avatars saved? Could you share some pointers how you would implement this?

[boxdot]

We already retrieve profiles in resolve_name_from_profile in src/signal/impl.rs. At the moment, only profile name is used. However, the returned Profile struct does not contain the avatar. Digging deeper in the stack (gurk uses presage which uses libsignal-service-rs) they throw away the avatar in this place during decryption: https://github.com/whisperfish/libsignal-service-rs/blob/5dfe90b5caa90ede538e9b508a44544c0733a704/libsignal-service/src/push_service.rs#L318

I would take presage's cli example and use it to extend libsignal-service-rs.