notifications: Try to guess app id if getting from hints fails

[EbonJaeger]

Description

The notification spec states that the desktop-entry hint should be the prefix of the Desktop Application Info file. However, because of the push to have fully-qualified app ID's, some applications now have a mismatch between the ID and the desktop file, meaning the hint cannot be used for that application.

In cases where the hint fails, try to guess the ID using the application's name given to us from DBus.

It seems to fix https://github.com/BuddiesOfBudgie/budgie-desktop/issues/477.

Original description:

The spec states that the image data from a notification should be used before the application icon or any other icon. This change should reflect that.

It seems to fix #477. Nemo and Twitch Streamlink notifications now display properly in Raven on my system.

Signed-off-by: Evan Maddock maddock.evan@vivaldi.net

Submitter Checklist

• [ ] Squashed commits with git rebase -i (if needed)
• [x] Built budgie-desktop and verified that the patch worked (if needed)

[JoshStrobl]

This change will result in Discord iconography being that of the avatar of the first avatar of the first person / channel / server you get a notification from, regardless of whether or not any other notifications come from the same source, That's why I have it set to prioritize the app info image.

[JoshStrobl]

See https://github.com/BuddiesOfBudgie/budgie-desktop/pull/452/commits/6c0608b0649cbb7b2faa296c427038800568eb3d

The specification is for the Notification itself, it shouldn't dictate how it should be handled in Raven. I would be curious what sort of AppInfo we are getting from those applications sending the notifications.

[EbonJaeger]

Gonna give this more thought...

[EbonJaeger]

Thought given.

[EbonJaeger]

Found two more things bork: Solus Update Service and budgie-daemon when we get the notification that there are notifications.