import random
from collections import Counter
from .models import LottoDraw

def recommend_numbers(top_n=20):
    from .models import LottoDraw
    from collections import Counter
    import random

    draws = LottoDraw.objects.all()
    numbers = []

    for draw in draws:
        numbers += [draw.number_1, draw.number_2, draw.number_3,
                    draw.number_4, draw.number_5, draw.number_6]

    if len(numbers) < 6:
        return ["데이터 부족"]  # 혹은 랜덤 추첨 ['??', '??', ...]

    freq = Counter(numbers)
    hot_numbers = [num for num, _ in freq.most_common(top_n)]

    if len(hot_numbers) < 6:
        return ["데이터 부족"]

    return sorted(random.sample(hot_numbers, 6))