Durability For Weapons

So with durability on crafted armour, it goes down by getting hit and by moving around.
I was wondering how it works on crafted weapons. Right now I think it only takes durability away if you hit with the crafted weapon and getting hit/running around has no effect on a crafted weapons durability.

Like this:
-Getting hit takes no durability away from your crafted weapon.

-Hitting with a crafted weapon takes durability away from said weapon

-Running around takes no durability from your crafted weapon

Could someone correct me if I’m wrong, please.

 

Attacking and casting spells will lower durability.

 

Do you happen to know the exact values? (Chanceof decay by attackspeed and spell/melee, idk if spell and melee have same chance) I would assume slow weapons would have a higher chance to lose 1 dura on a hit than a fast weapon. If not, that's quite skewed and should be fixed imo

 

Ok thank you :D