AI controller on PlayerChar for Auto Attack


I’m looking for the easiest way to achieve the following;

On input action “Attack” the AI takes over the PlayerCharacter, finds nearest actor of “enemy” type, issue a move to actor command and attack actor… Later damage will be added to deal damage equal to equipped weapon.

So basically a normal simple AI pawn that takes over the Player. I’m trying to make an attack system similar to Last Day on Earth.

How would I easiest approach this? Is it better to not let the player become AI? And how would I then attack nearest enemy?