from typing import Optional

import cloudinit.net.netops as netops
from cloudinit import subp


class BsdNetOps(netops.NetOps):
    @staticmethod
    def link_up(interface: str) -> subp.SubpResult:
        return subp.subp(["ifconfig", interface, "up"])

    @staticmethod
    def link_down(interface: str) -> subp.SubpResult:
        return subp.subp(["ifconfig", interface, "down"])

    @staticmethod
    def add_route(
        interface: str,
        route: str,
        *,
        gateway: Optional[str] = None,
        source_address: Optional[str] = None
    ):
        subp.subp(["route", "add", route, "-interface", interface])
        if gateway and gateway != "0.0.0.0":
            subp.subp(
                ["route", "change", route, gateway],
            )

    @staticmethod
    def append_route(interface: str, address: str, gateway: str):
        return BsdNetOps.add_route(interface, route=address, gateway=gateway)

    @staticmethod
    def del_route(
        interface: str,
        address: str,
        *,
        gateway: Optional[str] = None,
        source_address: Optional[str] = None
    ):
        subp.subp(
            ["route", "del", address]
            + ([gateway] if gateway and gateway != "0.0.0.0" else []),
        )

    @staticmethod
    def get_default_route() -> str:
        std, _ = subp.subp(["route", "-nv", "get", "0.0.0.0/0"])
        return std.splitlines()[-1].strip()

    @staticmethod
    def add_addr(
        interface: str, address: str, broadcast: Optional[str] = None
    ):
        broadcast_args = []
        if broadcast:
            broadcast_args = ["broadcast", broadcast]
        subp.subp(
            [
                "ifconfig",
                interface,
                address,
                *broadcast_args,
                "alias",
            ],
        )

    @staticmethod
    def del_addr(interface: str, address: str):
        subp.subp(
            [
                "ifconfig",
                interface,
                address,
                "-alias",
            ],
        )