Pants! Glad you're ok and you didn't write yourself off.
The worst of the damage is the bent steering and leaking shock. Other than that its largely cosmetic - smashed headlight, cracked/scratched nose cone, scratch on alternator cover, and thats about it really!
.... so I can fix it up myself?
So, fixed up similar Foxeye FZS600 a few times in the past. Not sure on price of forks. But if they're knackered, you need to also check for damage to front wheel, headstock and top of frame too. Look for ripples in fork chrome. Ideally, you'd remove them, strip up down and roll them on a super flat surface to gauge if they're at all bent.
Otherwise cosmetic stuff will cost you this for new genuine parts from Fowlers (much of this only comes up on ebay infrequently or only in damaged condition):
Headlight cluster - £230 new (make sure you get a UK light pattern one, shared with FZS1000)
Nose cone - £200 fully painted
Decals - £35 each, but optional of course.
Fairing bracket - £160 (this is likely bent, might be able to hammer it back at a push though, but it's tough to get perfectly true)
Side nose cone brackets bent? - £10-15 each
Mirrors still good? pivot often snaps in a crash - £80 each (shared with FZS1000)
Not sure on
alternator cover
This plus cost of forks will be more then two thirds the bike's value and so almost certainly a Cat-N write off.
Should give you an idea on price to fix. Fairing/lights/nose cone is all easy to replace. Strip down and replacement of forks etc, I'd recommend getting a garage to sort out (unless you've done it before and have the appropriate tools handy). See what salvage cost they want for the bike, then do the maths.
Personally, IIWY I'd see what you can get from insurers, argue the toss against their first low ball valuation and then just put the money towards a Euro-3 replacement bike.