import logging
import os
import shutil
import time

import pytest

pytestmark = [
    pytest.mark.core_test,
    pytest.mark.skip_on_freebsd(reason="Processes are not properly killed on FreeBSD"),
]

log = logging.getLogger(__name__)


def test_pki(salt_mm_failover_master_1, salt_mm_failover_master_2, caplog):
    """
    Verify https://docs.saltproject.io/en/latest/topics/tutorials/multimaster_pki.html
    """
    # At first we spin up a simple minion in order to capture its logging output.
    config_defaults = {
        "transport": salt_mm_failover_master_1.config["transport"],
    }

    mm_master_1_port = salt_mm_failover_master_1.config["ret_port"]
    mm_master_1_addr = salt_mm_failover_master_1.config["interface"]
    mm_master_2_port = salt_mm_failover_master_2.config["ret_port"]
    mm_master_2_addr = salt_mm_failover_master_2.config["interface"]
    config_overrides = {
        "master": [
            "{}:{}".format(mm_master_1_addr, mm_master_1_port),
            "{}:{}".format(mm_master_2_addr, mm_master_2_port),
        ],
        "publish_port": salt_mm_failover_master_1.config["publish_port"],
        "master_type": "failover",
        "master_alive_interval": 5,
        "master_tries": -1,
        "verify_master_pubkey_sign": True,
    }
    factory = salt_mm_failover_master_1.salt_minion_daemon(
        "mm-failover-pki-minion-1",
        defaults=config_defaults,
        overrides=config_overrides,
        extra_cli_arguments_after_first_start_failure=["--log-level=info"],
    )
    # Need to grab the public signing key from the master, either will do
    shutil.copyfile(
        os.path.join(salt_mm_failover_master_1.config["pki_dir"], "master_sign.pub"),
        os.path.join(factory.config["pki_dir"], "master_sign.pub"),
    )
    with caplog.at_level(logging.DEBUG):
        with factory.started(start_timeout=120):
            pass

    assert (
        "Successfully verified signature of master public key with verification public key master_sign.pub"
        in caplog.text
    )


def test_return_to_assigned_master(
    mm_failover_master_1_salt_cli,
    mm_failover_master_2_salt_cli,
    salt_mm_failover_minion_1,
    salt_mm_failover_minion_2,
    run_salt_cmds,
):
    """
    Test that values are being returned to only the master the minion is currently connected to.
    """
    returns = run_salt_cmds(
        [mm_failover_master_1_salt_cli, mm_failover_master_2_salt_cli],
        [salt_mm_failover_minion_1, salt_mm_failover_minion_2],
    )

    assert len(returns) == 2
    assert (mm_failover_master_1_salt_cli, salt_mm_failover_minion_1) in returns
    assert (mm_failover_master_2_salt_cli, salt_mm_failover_minion_2) in returns


def test_failover_to_second_master(
    event_listener,
    salt_mm_failover_master_1,
    salt_mm_failover_master_2,
    salt_mm_failover_minion_1,
    salt_mm_failover_minion_2,
    mm_failover_master_1_salt_cli,
    mm_failover_master_2_salt_cli,
    run_salt_cmds,
):
    """
    Test then when the first master is stopped, connected minions failover to the second master.
    """
    event_patterns = [
        (
            salt_mm_failover_master_2.id,
            "salt/minion/{}/start".format(salt_mm_failover_minion_1.id),
        )
    ]

    start_time = time.time()
    with salt_mm_failover_master_1.stopped():
        assert salt_mm_failover_master_2.is_running()
        # We need to wait for them to realize that the master is not alive
        # At this point, only the first minion will need to change masters
        events = event_listener.wait_for_events(
            event_patterns,
            timeout=salt_mm_failover_minion_1.config["master_alive_interval"] * 4,
            after_time=start_time,
        )

        assert salt_mm_failover_minion_1.is_running()
        assert not events.missed

        returns = run_salt_cmds(
            [mm_failover_master_1_salt_cli, mm_failover_master_2_salt_cli],
            [salt_mm_failover_minion_1, salt_mm_failover_minion_2],
        )

        assert len(returns) == 2
        assert (mm_failover_master_2_salt_cli, salt_mm_failover_minion_1) in returns
        assert (mm_failover_master_2_salt_cli, salt_mm_failover_minion_2) in returns


def test_minion_reconnection(
    salt_mm_failover_minion_1,
    salt_mm_failover_minion_2,
    mm_failover_master_1_salt_cli,
    mm_failover_master_2_salt_cli,
    run_salt_cmds,
):
    """
    Test that minions reconnect to a live master.

    To work well with salt factories, the minions will reconnect to the master they were connected to in conftest.py.
    """
    with salt_mm_failover_minion_1.stopped(), salt_mm_failover_minion_2.stopped():
        log.debug("Minions have stopped. They will restart next.")

    returns = run_salt_cmds(
        [mm_failover_master_1_salt_cli, mm_failover_master_2_salt_cli],
        [salt_mm_failover_minion_1, salt_mm_failover_minion_2],
    )

    assert len(returns) == 2
    assert (mm_failover_master_1_salt_cli, salt_mm_failover_minion_1) in returns
    assert (mm_failover_master_2_salt_cli, salt_mm_failover_minion_2) in returns


@pytest.mark.skip_on_windows
def test_minions_alive_with_no_master(
    grains,
    event_listener,
    salt_mm_failover_master_1,
    salt_mm_failover_master_2,
    salt_mm_failover_minion_1,
    salt_mm_failover_minion_2,
):
    """
    Make sure the minions stay alive after all masters have stopped.
    """
    if grains["os_family"] == "Debian" and grains["osmajorrelease"] == 9:
        pytest.skip(
            "Skipping on Debian 9 until flaky issues resolved. See issue #61749"
        )
    start_time = time.time()
    with salt_mm_failover_master_1.stopped():
        with salt_mm_failover_master_2.stopped():
            # Make sure they had at least one chance to re-auth
            events = event_listener.wait_for_events(
                [
                    (salt_mm_failover_minion_1.id, "__master_disconnected"),
                    (salt_mm_failover_minion_2.id, "__master_disconnected"),
                ],
                timeout=salt_mm_failover_minion_1.config["master_alive_interval"] * 4,
                after_time=start_time,
            )
            assert not events.missed
            assert salt_mm_failover_minion_1.is_running()
            assert salt_mm_failover_minion_2.is_running()

            start_time = time.time()

    event_patterns = [
        (
            salt_mm_failover_master_1.id,
            "salt/minion/{}/start".format(salt_mm_failover_minion_1.id),
        ),
        (
            salt_mm_failover_master_1.id,
            "salt/minion/{}/start".format(salt_mm_failover_minion_2.id),
        ),
        (
            salt_mm_failover_master_2.id,
            "salt/minion/{}/start".format(salt_mm_failover_minion_1.id),
        ),
        (
            salt_mm_failover_master_2.id,
            "salt/minion/{}/start".format(salt_mm_failover_minion_2.id),
        ),
    ]
    events = event_listener.wait_for_events(
        event_patterns,
        timeout=salt_mm_failover_minion_1.config["master_alive_interval"] * 8,
        after_time=start_time,
    )

    assert len(events.matches) >= 2

    expected_tags = {
        "salt/minion/{}/start".format(salt_mm_failover_minion_1.id),
        "salt/minion/{}/start".format(salt_mm_failover_minion_2.id),
    }
    assert {event.tag for event in events} == expected_tags
