This is in for a full new bottom base and back doors. The bottom 4 inches all the way around is water damaged and maybe termite eaten as well. Pretty bad.
This is gonna require the 3 bottom edges cut off equal. Biscuit the edges for the new wood. New braces and New leg leveler blocks. Router the decorative groove back in, then rough paint the black to keep an aged look. Then recreate new back doors that where missing.