Get block(s) relative to player direction

I'm trying to get the blocks left and right of the block a player is mining. Since the player could be mining in any direction, I can't simply get the blocks east, west, etc to the block being mined, as the player could be mining in any direction.

How would I do this?

 

@Rabrg Het he players location then subtract x amount of blocks.

 

@CodePlaysMinecraft But I need to put direction into consideration, which is the problem.

 

@Rabrg Do you only need this for mining? If so listen to a BlockBreakEvent, get the blocks and the relatives?

 

@GriffinPvP I know, that's what I have, but I need to consider direction which is where I'm confused.

 

@Rabrg I believe you can get the block face that the player is mining.