Facebook "LIKE" button

Hi all,
It’s a short question :
Is it possible to make a “like button” who like a page of facebook and send a signal ?
In the same time : Is it possible to check if the user already like the page ?
I searched a lot but I don’t find any resource to help to achieve that.
Thanks for the help

UP

https://www.assetstore.unity3d.com/

70$ for just a like button ? Is it a joke ?

Think about it. What is an hour of your time worth? now add that up into how many hours it will take you to do it on your own. is that more than $70?

I’ve never linked Facebook with any of my software, but I suspect this is where you want to start:

there are also alot of other options on the asset store. some are even free!