from fastai.learner import Learner
import pandas as pd

def get_recommendations_for_user(learn: Learner, user_id: str, limit: int = 5):
    # TODO: Fetch list of not listened songs as entries
    not_listened_songs = ["Revelry, Kings of Leon, 2008", "Gears, Miss May I, 2010", "Sexy Bitch, David Guetta, 2009"]
    input_dataframe = pd.DataFrame({'user_id': ["440abe26940ae9d9268157222a4a3d5735d44ed8"] * len(not_listened_songs), 'entry': not_listened_songs})
    test_dl = learn.dls.test_dl(input_dataframe)
    predictions = learn.get_preds(dl=test_dl)

    # TODO: Return recommendations in track format
    return {
        "user_id": user_id,
        "limit": limit,
        "recommendations": predictions[0].numpy().tolist()
    }