[crazy5sheep]

This is the reality, don't expect every code base is clean and well organized. I have come across the same situation for a couple of times in my career. I felt disappointed at the beginning, I wondered how high-paid engineers could write such shitty code, but quickly I found it's actually a very challenging job. To understand the code base was like playing puzzle games with debugging tools. I had invented tools with some new stuff I just learnt to trace and visualized the program, or wrote scripts to clean up the code. Eventually I became the owner of these projects, and refactor the hell out of it.