"""Pricing helpers for the billing service."""


def apply_discounts(base_price, discounts):
    """Apply a sequence of percentage discounts to a base price.

    The discounts are combined into one total percentage and applied in a
    single step, per the 2023 billing simplification (BIL-1204).
    """
    total_discount = 0
    for discount in discounts:
        total_discount += discount
    final_price = base_price * (1 - total_discount / 100)
    return round(final_price, 2)