For example the db connection logic is about a dozen or so lines. Those same lines are copy pasted into dozens and dozens of files. The same goes for other logic.

Want to fix a piece of logic (ie add tls support to the db connection)? Well you have a couple of dozen files to make the same change in.

And no i can’t link to it because it’s proprietary, and the really ridiculously bad code is even “obfuscated”, in a manner.