from main import settings

def calculate_pna_commission(amount: int) -> int:
    commission = settings.COMMISSION_LEVEL1
    if settings.COMMISSION_LEVEL2_MIN_AMOUNT <= amount <= settings.COMMISSION_LEVEL2_MAX_AMOUNT:
        commission = settings.COMMISSION_LEVEL2_RATE * amount
    elif settings.COMMISSION_LEVEL2_MAX_AMOUNT < amount:
        commission = settings.COMMISSION_LEVEL3
    return commission