import subprocess
COMMAND_LAUNCHER = "bash"
COMMAND_DOWN = "ip link set dev "
COMMAND_DELETE = "ip link delete "


def external_parse():
    with open('external.conf') as external_file:
        for line in external_file:

                    collision_domain = line.split(" ")[0]
                    interface = line.split()[1]
                    if interface.__contains__("."):
                        prefix_interface = interface.split(".")[0]
                        vlan_id = interface.split(".")[1]
                        subprocess.call([COMMAND_LAUNCHER, "brctl_external_config", collision_domain, interface, prefix_interface, vlan_id])
                    else:
                        subprocess.call([COMMAND_LAUNCHER, "brctl_external_config", collision_domain, interface])


def external_clean():
    with open('external.conf') as external_file:
        for line in external_file:
            interface = line.split(" ")[1]
            if interface.__contains__("."):
                subprocess.call([COMMAND_LAUNCHER, COMMAND_DOWN + interface + "down"])
                subprocess.call([COMMAND_LAUNCHER, COMMAND_DELETE + interface])
                subprocess.call([COMMAND_LAUNCHER, "echo removing " + interface + " subinterface"])


external_parse()