Since @LucHermitte alluded to a macro-based solution, I thought I'd provide one.
First line adds in the quotes and commas, the second line adds the brackets.
(N.B. in the above,
<C-R> means press Ctrl-R,
<Esc> means press Esc, and
<BS> means press Backspace.)
I could write a long explanation of how this works but honestly, it will be quicker and easier for you just to try typing it in. If you're still not sure what's happening, you might need to read up on recursive macros and
Note that this is not remotely VimGolf'ed. I've no doubt the good people at vimgolf.com could come up with a solution that did the same thing in a quarter of the keystrokes.