Wood is rotted at bottom in one place, should be replaced.
Not sure how the rest is.
You might want smaller mesh at least on bottom 2" of walls.
Hopefully the roof is water tight.
Could be fine for years with a bit of attention...or at least for a few years.
I don't like wire on run floor, but maybe it could be reused as an apron.
Good examples of anti-dig apron installation, tho I'd not recommend 1/2" HC (unless you have small rodents like rats)...go with 14ga 1x2 or 1x1, will hold up much longer and is easier to lay flat.
http://www.backyardchickens.com/t/1110498/wire-around-coop#post_17093528
https://www.backyardchickens.com/threads/new-coop-project.1169916/page-2#post-18481208