Feature request: barracks toggle to continuously make troops

First, apologies if this has been suggested before. I love farming but especially when I'm boosting barracks, I find it tedious to set up my barracks production after each attack. Would love it if there was a toggle in the barracks UI to make it produce the unit non-stop - as long as there is enough elixir of course. With this, I can focus on the fun part of the game (attacking!) rather than the slightly dull part (setting up my production over and over).

As a side bonus for Supercell, this might encourage the use of gems to boost 1-3 barracks to get to that perfect troop composition.

Of course, it would be even more convenient to be able to specify a desired troop composition and have your barracks make them automatically, but the UI for that would be more complex.