I heard they 100% knew and it was all staged to drag USA into the war.
Because you know, "War is a Racket".
Will share some of my previous answers on the subject!
https://www.reddit.com/r/AskHistorians/comments/hh25h6/did_roosevelt_already_knew_the_pearl_harbor/
The gist being that no there is no credible evidence that any senior US leadership knew the specifics of the attack beforehand. But that doesn't mean they were surprised that war came. For the best part of 30 years the US and Japan had considered the other their most likely next foe over dominance of the Pacific. Their navies had developed in large part to fight the other, and had planned and planned how they might do it. FDR also took an increasingly hardline stance against Japan in the face of their expanding war against China, and other worrisome moves like occupying Vietnam following the fall of France.
Pearl in particular hadn't factored as a likely target for Japan in US thinking, at least to start a war, due to the serious logistics concerns getting there. But even then, a raid by submarines, or perhaps light forces like cruisers was considered a possibility worth guarding against.
While finally, having almost the entirety of your battleship gunline(still VERY important for how the USN planned to fight in 1941) sunk or damaged, isn't a great way to plan to start a war we can note.