import argparse
from pathlib import Path
from at.dhcp import parse_isc_dhcpd_leases
from time import time

def list():
    parser = argparse.ArgumentParser()
    parser.add_argument("leases", type=Path, help="leases file")
    parser.add_argument("--timeout", type=int, default=None, help="timeout in minutes")
    args = parser.parse_args()

    with open(args.leases) as f:
        offset, devices = parse_isc_dhcpd_leases(f)
    if args.timeout is not None:
        devices.purge_stale(args.timeout * 60)
    print("Found devices:")
    for device in devices._devices.values():
        print(device._replace(atime = time() - device.atime))

import grpc
from .tracker_pb2 import ClientsRequest
from .tracker_pb2_grpc import DhcpTrackerStub

def format_mac(raw: bytes) -> str:
    return ':'.join(f'{b:02x}' for b in raw)

def tracker_list():
    parser = argparse.ArgumentParser()
    parser.add_argument("address", default='unix:///tmp/checkinator.sock', nargs='?', help="tracker grpc address")
    parser.add_argument("--timeout", type=int, default=None, help="timeout in minutes")
    args = parser.parse_args()
    with grpc.insecure_channel(args.address) as channel:
        stub = DhcpTrackerStub(channel)
        response = stub.GetClients(ClientsRequest())
    for client in response.clients:
        print(format_mac(client.hw_address), client.last_seen, client.ip_address, client.client_hostname )