Need to replace/fix keyboard because of water-damage

Hi, I accidentally dropped a glass of water beside my macbook and though the water went only under the laptop, it damaged my macbook.

The screen lights of the screen were lightly damaged and my keyboard only types only in camel-case. I can't work with the mac without attaching a separate keyboard, which is quite annoying.

I did return the macbook to apple, as I already knew, water damage was not covered. I was kindly offered a new macbook for a reduced price.

Is there a way for me to fix/replace the keyboard?

Thank you in advance