sorry if there are some realisem mods that already do this.

what this mod would do is tie a weapons damage to how durable it is. a blunt sword or axe wouldn't be able to do much damage, nither would a worn down mace. there could also be special repair items, like sharpening stones for swords and axes. but i have no idea how you would repair a mace or hammer.

This is vanilla. A weapon's health already determines its damage. Nothing to add.