What's the point of using a framework if you don't use any of its features!? What the heck, I have to fix this damn web frontend that is so broken in many ways.

Instead of using an authentication middleware, every single view has the same block of code to check if a user is authenticated. Instead of templates, they used static HTML/JavaScript files and they passed data to pages through cookies.

The "REST" API is so messed up, nothing is resource-oriented, HTTP methods are chosen randomly as well as status codes. They are returning "412 Precondition Failed" instead of a plain simple "401 Unauthorized" when you're not authenticated! What the hell, did they even bother to check what 412 is about when they copied and pasted it from a crappy website!? I would never come up with 412, not even in my scariest nightmare.

What kind of drugs were they using when they wrote such code? Oh dear, I need a vacation...