#!/usr/bin/env python
# SPDX-License-Identifier: ISC

#
# Copyright (c) 2024 by
# Donatas Abraitis <donatas@opensourcerouting.org>
#

import os
import sys
import json
import pytest
import functools

CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))

# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, get_topogen
from lib.common_config import step

pytestmark = [pytest.mark.bgpd]


def build_topo(tgen):
    r1 = tgen.add_router("r1")
    r2 = tgen.add_router("r2")

    switch = tgen.add_switch("s1")
    switch.add_link(r1)
    switch.add_link(r2)


def setup_module(mod):
    tgen = Topogen(build_topo, mod.__name__)
    tgen.start_topology()

    for _, (rname, router) in enumerate(tgen.routers().items(), 1):
        router.load_frr_config(os.path.join(CWD, "{}/frr.conf".format(rname)))

    tgen.start_router()


def teardown_module(mod):
    tgen = get_topogen()
    tgen.stop_topology()


def test_bgp_dual_as():
    tgen = get_topogen()

    if tgen.routers_have_failure():
        pytest.skip(tgen.errors)

    r1 = tgen.gears["r1"]

    def _bgp_converge_65000():
        output = json.loads(r1.vtysh_cmd("show bgp ipv4 summary json"))
        expected = {
            "ipv4Unicast": {
                "as": 65000,
                "peers": {
                    "10.0.0.2": {
                        "hostname": "r2",
                        "remoteAs": 65002,
                        "localAs": 65000,
                        "state": "Established",
                        "peerState": "OK",
                    }
                },
            }
        }
        return topotest.json_cmp(output, expected)

    test_func = functools.partial(_bgp_converge_65000)
    _, result = topotest.run_and_expect(test_func, None, count=30, wait=1)
    assert result is None, "Can't establish BGP session using global AS 65000"


def test_memory_leak():
    "Run the memory leak test and report results."
    tgen = get_topogen()
    if not tgen.is_memleak_enabled():
        pytest.skip("Memory leak test/report is disabled")

    tgen.report_memory_leaks()


if __name__ == "__main__":
    args = ["-s"] + sys.argv[1:]
    sys.exit(pytest.main(args))