Hi I'd like to know if there's a metaphor in that sentence because I didn't understand it. Thank you in advance. "we're in for a rude awakening"

Hi
I’d like to know if there’s a metaphor in that sentence because I didn’t understand it.
Thank you in advance. “we’re in for a rude awakening”

If "metaphonr " means: a thing regarded as representative or symbolic of something else ,
Then “a rude awakening” is representative of “a sudden realization”, and that realization is not being jolted from a sleep state to a waking state.