Someone used a pry bar to remove the lower trim of my front door, and accidentally pushed one side of the sill towards the house by inches, but the other side seems okay. The door is now very difficult to close due to the deformation, and there’s a large gap on the top portion even closed. There's another photo showing the back side of the door.

Is the door worth a repair? If yes, how to repair it? I can probably push the sill back, but what else shall I do? How to fix the moved sill back to the vertical jamb and panel again? Will the safety of the door be compromised significantly?