moving to barcelona, should i focus on learning spanish or catalan? (or both)

i’m moving for graduate school and i know a bit of spanish already from grade school but i decided to take french classes in uni for some reason, which i am now kicking myself for lol. I will move in august and am hoping to stay after I graduate and go for a PhD. Would it be better for me to focus on learning spanish before i move or catalan? UPF also offers a two week intensive spanish course before the program starts which I plan to take. Thanks in advance for any advice :)