[messagegui] Music info lost if Auto-open messages is false (the default)

[gfwilliams]

Affected hardware version

Bangle 2

Your firmware version

2v18

The bug

To reproduce:

• Be on clock
• Play music on the phone (with Gadgetbridge), or paste:

GB({t:"musicinfo",artist:"No Doubt",album:"Tragic Kingdom",track:"Don't Speak",dur:263,c:-1,n:-1})
GB({t:"musicstate",state:"play",position:171,shuffle:1,repeat:1})

• ... Nothing happens
• Look in messages app - no messages shown
• Stop/restart music - still no messages shown
• Exit messages, restart messages - Music message shown in list

Now I (now) know there's a menu item called auto-open Music and setting that effectively fixes this but without it, the current behaviour feels wrong.

I've just pushes a fix which allows the messages app to show a music message if it arrives while the message app is running, but I guess I'm wondering: If we receive music info when we're on clock, then we go to messages - we should probably end up showing music in the music list?

I wonder how we fix that without writing to storage for every music update message? We have exports.music so maybe we have to have a E.on('kill handler that writes the music into the messages list on exit?

Installed apps

android,messages,messagegui,...