support background job in certain sense

[Yuan-Chen Cheng]

one use cases I know need background job:

1. play DRM music by app like Spotify.

[Michał Karnicki (karni)]

Also supporting things that may not necessarily end before the app is stopped when in background. For instance, currently when you start sending a picture on Telegram, you'll interrupt the process if you switch the app away from foreground.

[Yuan-Chen Cheng (ycheng-twn)]

[Simon Fels said]
It would be just another executable your click package would ship and would be exposed to media-hub at runtime by .json file in a common directory (generated through a click-hook). This .json file then knows the combination of url scheme (e.g spotify://) to excutable name (below your app directory) and that is what media-hub needs to know - no hard dependency, no distribution in the core OS.

This is similar to how we handle helpers for the Ubuntu Push client side implementation (see https://developer.ubuntu.com/en/start/platform/guides/push-notifications-client-guide/).

For sure, there need to be some guards set around this executable in terms of security (our apparmor profiles) and also resource usage.