Closet Bar Holder Angled Wall Any Ideas Out There On Converting A Home Bar (closet) Into A Desk/computer Claset?

Any ideas out there on converting a home bar (closet) into a desk/computer claset? - closet bar holder angled wall

1982, we have a house, a bar in the hall has. We recently had water damage and the need to build up the region again. We have an area on the desktop. Ideas or reference materials?