from constants import VALORANT_RANKS

def apply_rr(rank: str, rr: int, change: int):
    rr += change
    idx = VALORANT_RANKS.index(rank)

    # Rank up: 100 RR or more
    while rr >= 100 and idx < len(VALORANT_RANKS) - 1:
        rr -= 100
        idx += 1

    # Rank down: negative RR
    while rr < 0 and idx > 0:
        rr += 100
        idx -= 1

    # Clamp RR to 0-99 range
    rr = max(0, min(99, rr))

    return VALORANT_RANKS[idx], rr