Is it possible to automate subtitles?

I can’t find a plugin to do this— today I was re-watching Pan’s Labyrinth, and the Blu-Ray I ripped has the Spanish audio track and English subs. What I’d like to do is configure Kodi to automatically display English subs for any video I play that doesn’t have an English audio track. Likewise if someone had their system language set up for German or whatnot and they play a video that’s not in their native language it would be handy to have the option to display subtitles in their preferred language.

If there’s an addon that already exists that can do this, can someone steer me in the right direction? Much appreciated.