from __future__ import annotations

import re
import socket


MAC_RE = re.compile(r"^[0-9A-Fa-f]{2}(?::[0-9A-Fa-f]{2}){5}$")


def normalize_mac(mac: str) -> str:
    value = mac.strip().replace("-", ":")
    if not MAC_RE.match(value):
        raise ValueError(f"Adresse MAC invalide : {mac}")
    return value.upper()


def send_magic_packet(mac: str, broadcast: str = "255.255.255.255", port: int = 9) -> None:
    normalized = normalize_mac(mac)
    raw_mac = bytes.fromhex(normalized.replace(":", ""))
    packet = b"\xff" * 6 + raw_mac * 16
    with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
        sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
        sock.sendto(packet, (broadcast, port))