import datetime
from _socket import socket, AF_PACKET, SOCK_RAW
from time import sleep

import utils


class Frame:

    def __init__(self,
                 destination: bytes,
                 protocol: bytes,
                 message: str,
                 source: bytes = utils.mac_address):
        self.destination: bytes = destination
        self.source: bytes = source
        self.protocol: bytes = protocol
        self.message: str = message


def send_packet(packet: Frame) -> bool:
    sock = socket(AF_PACKET, SOCK_RAW)

    encoded = packet.message.encode()
    sock.bind((utils.get_device_name(), 0))

    """
    The way ethernet works is:
        - 6 bytes indicating destination mac
        - 6 bytes indicating source mac
        - 2 bytes indicating the type
        - maximum 1500 bytes of data to send
    """
    data = (packet.destination + utils.mac_address +
            packet.protocol + encoded)
    dt_string = datetime.datetime.now().strftime("%d/%m/%Y %H:%M:%S")
    print("Sending message to {} @{}: {}".format(packet.destination, dt_string, packet.message))
    sock.send(data)
    return True


if __name__ == "__main__":
    while True:
        send_packet(Frame(destination=utils.broadcast_address,
                          protocol=b"\x60\x00",
                          message="ZeusWPI is de max!"))
        sleep(1)