Many here have been assaulted by addicts (including me), and we understand what has happened.
And many of us just did not see it coming, did not think it possible.
For me, trust was impossible after being hit. No amount of marital counseling, nothing, not sobriety (had he attempted it), nothing would ever have taken away my fear of him.
I'm glad you will seek counseling. You need and deserve that. And I'm glad you have such good friends. So many people become more and more isolated as they spiral down alongside an addict, and they find they have no one to call when everything disintegrates. But you have people, and that is a great blessing.
But if anyone says to you, "He didn't mean it, he was just out of his mind on drugs, you should at least give him a chance to apologize....."......that person is not someone to have on your team right now.
Realists are what you need.