"""Tests for bouncer control commands."""

from __future__ import annotations

import time
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from bouncer import commands
from bouncer.network import State


def _make_network(name: str, state: State, nick: str = "testnick",
                  host: str | None = None, channels: set[str] | None = None,
                  topics: dict[str, str] | None = None) -> MagicMock:
    """Create a mock Network."""
    net = MagicMock()
    net.cfg.name = name
    net.cfg.host = f"irc.{name}.chat"
    net.cfg.port = 6697
    net.cfg.tls = True
    net.cfg.channels = list(channels) if channels else []
    net.cfg.nick = nick
    net.cfg.password = None
    net.state = state
    net.nick = nick
    net.visible_host = host
    net.channels = channels or set()
    net.topics = topics or {}
    net.names = {}
    net._reconnect_attempt = 0
    net.connected = state not in (State.DISCONNECTED, State.CONNECTING)
    net.ready = state == State.READY
    net.start = AsyncMock()
    net.stop = AsyncMock()
    net.send = AsyncMock()
    net.send_raw = AsyncMock()
    net._nickserv_register = AsyncMock()
    return net


def _make_router(*networks: MagicMock) -> MagicMock:
    """Create a mock Router with the given networks."""
    router = MagicMock()
    router.networks = {n.cfg.name: n for n in networks}
    router.network_names.return_value = [n.cfg.name for n in networks]
    router.get_network = lambda name: router.networks.get(name)
    router.backlog = AsyncMock()
    router.add_network = AsyncMock()
    router.remove_network = AsyncMock(return_value=True)
    router.config = MagicMock()
    return router


def _make_client(nick: str = "testuser") -> MagicMock:
    """Create a mock Client."""
    client = MagicMock()
    client.nick = nick
    client._connected_at = time.time() - 120
    client._addr = ("127.0.0.1", 54321)
    return client


class TestHelp:
    @pytest.mark.asyncio
    async def test_help_lists_commands(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("HELP", router, client)
        assert lines[0] == "[HELP]"
        assert any("STATUS" in line for line in lines)
        assert any("UPTIME" in line for line in lines)

    @pytest.mark.asyncio
    async def test_empty_input_shows_help(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("", router, client)
        assert lines[0] == "[HELP]"


class TestStatus:
    @pytest.mark.asyncio
    async def test_status_no_networks(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("STATUS", router, client)
        assert lines[0] == "[STATUS]"
        assert "(no networks configured)" in lines[1]

    @pytest.mark.asyncio
    async def test_status_ready_network(self) -> None:
        net = _make_network("libera", State.READY, nick="fabesune", host="user/fabesune")
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("STATUS", router, client)
        assert lines[0] == "[STATUS]"
        assert "ready" in lines[1]
        assert "fabesune" in lines[1]
        assert "user/fabesune" in lines[1]

    @pytest.mark.asyncio
    async def test_status_connecting_shows_attempt(self) -> None:
        net = _make_network("hackint", State.CONNECTING)
        net._reconnect_attempt = 3
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("STATUS", router, client)
        assert "connecting" in lines[1]
        assert "attempt 3" in lines[1]

    @pytest.mark.asyncio
    async def test_status_case_insensitive(self) -> None:
        net = _make_network("libera", State.READY, nick="testnick")
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("status", router, client)
        assert lines[0] == "[STATUS]"


class TestInfo:
    @pytest.mark.asyncio
    async def test_info_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("INFO", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_info_unknown_network(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("INFO fakenet", router, client)
        assert "Unknown network" in lines[0]
        assert "libera" in lines[1]

    @pytest.mark.asyncio
    async def test_info_valid_network(self) -> None:
        net = _make_network("libera", State.READY, nick="fabesune",
                            host="user/fabesune", channels={"#test", "#dev"})
        router = _make_router(net)
        router.backlog.list_nickserv_creds.return_value = [
            ("libera", "fabesune", "test@mail.tm", "user/fabesune", 1700000000.0, "verified"),
        ]
        client = _make_client()
        lines = await commands.dispatch("INFO libera", router, client)
        assert lines[0] == "[INFO] libera"
        assert any("ready" in line for line in lines)
        assert any("fabesune" in line for line in lines)
        assert any("#dev" in line or "#test" in line for line in lines)
        assert any("verified" in line for line in lines)


class TestUptime:
    @pytest.mark.asyncio
    async def test_uptime(self) -> None:
        commands.STARTUP_TIME = time.time() - 3661  # 1h 1m 1s
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("UPTIME", router, client)
        assert lines[0].startswith("[UPTIME]")
        assert "1h" in lines[0]
        assert "1m" in lines[0]
        assert "1s" in lines[0]

    @pytest.mark.asyncio
    async def test_uptime_unknown(self) -> None:
        commands.STARTUP_TIME = 0.0
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("UPTIME", router, client)
        assert "unknown" in lines[0]


class TestNetworks:
    @pytest.mark.asyncio
    async def test_networks_empty(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("NETWORKS", router, client)
        assert lines[0] == "[NETWORKS]"
        assert "(none)" in lines[1]

    @pytest.mark.asyncio
    async def test_networks_lists_all(self) -> None:
        libera = _make_network("libera", State.READY)
        oftc = _make_network("oftc", State.CONNECTING)
        router = _make_router(libera, oftc)
        client = _make_client()
        lines = await commands.dispatch("NETWORKS", router, client)
        assert lines[0] == "[NETWORKS]"
        assert any("libera" in line and "ready" in line for line in lines[1:])
        assert any("oftc" in line and "connecting" in line for line in lines[1:])


class TestCreds:
    @pytest.mark.asyncio
    async def test_creds_no_backlog(self) -> None:
        router = _make_router()
        router.backlog = None
        client = _make_client()
        lines = await commands.dispatch("CREDS", router, client)
        assert "not available" in lines[0]

    @pytest.mark.asyncio
    async def test_creds_empty(self) -> None:
        router = _make_router()
        router.backlog.list_nickserv_creds.return_value = []
        client = _make_client()
        lines = await commands.dispatch("CREDS", router, client)
        assert "no stored credentials" in lines[0]

    @pytest.mark.asyncio
    async def test_creds_lists_entries(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.list_nickserv_creds.return_value = [
            ("libera", "fabesune", "test@mail.tm", "user/fabesune", 1700000000.0, "verified"),
            ("libera", "oldnick", "old@mail.tm", "old/host", 1699000000.0, "pending"),
        ]
        client = _make_client()
        lines = await commands.dispatch("CREDS libera", router, client)
        assert lines[0] == "[CREDS]"
        assert any("+" in line and "fabesune" in line and "verified" in line for line in lines)
        assert any("~" in line and "oldnick" in line and "pending" in line for line in lines)

    @pytest.mark.asyncio
    async def test_creds_unknown_network(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CREDS fakenet", router, client)
        assert "Unknown network" in lines[0]


class TestConnect:
    @pytest.mark.asyncio
    async def test_connect_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("CONNECT", router, client)
        assert "Usage" in lines[0] or "provide" in lines[0]

    @pytest.mark.asyncio
    async def test_connect_unknown_network(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("CONNECT fakenet", router, client)
        assert "Unknown network" in lines[0]

    @pytest.mark.asyncio
    async def test_connect_already_connected(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CONNECT libera", router, client)
        assert "already" in lines[0]

    @pytest.mark.asyncio
    async def test_connect_disconnected(self) -> None:
        net = _make_network("libera", State.DISCONNECTED)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CONNECT libera", router, client)
        assert "[CONNECT]" in lines[0]
        assert "starting" in lines[0]


class TestDisconnect:
    @pytest.mark.asyncio
    async def test_disconnect_ready(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("DISCONNECT libera", router, client)
        assert "[DISCONNECT]" in lines[0]
        net.stop.assert_awaited_once()

    @pytest.mark.asyncio
    async def test_disconnect_already_disconnected(self) -> None:
        net = _make_network("libera", State.DISCONNECTED)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("DISCONNECT libera", router, client)
        assert "already disconnected" in lines[0]


class TestReconnect:
    @pytest.mark.asyncio
    async def test_reconnect(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("RECONNECT libera", router, client)
        assert "[RECONNECT]" in lines[0]
        net.stop.assert_awaited_once()


class TestNick:
    @pytest.mark.asyncio
    async def test_nick_missing_args(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("NICK", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_nick_missing_nick(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("NICK libera", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_nick_change(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("NICK libera newnick", router, client)
        assert "[NICK]" in lines[0]
        net.send_raw.assert_awaited_once_with("NICK", "newnick")

    @pytest.mark.asyncio
    async def test_nick_not_connected(self) -> None:
        net = _make_network("libera", State.DISCONNECTED)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("NICK libera newnick", router, client)
        assert "not connected" in lines[0]


class TestRaw:
    @pytest.mark.asyncio
    async def test_raw_missing_args(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("RAW", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_raw_send(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("RAW libera WHOIS testuser", router, client)
        assert "[RAW]" in lines[0]
        net.send.assert_awaited_once()

    @pytest.mark.asyncio
    async def test_raw_not_connected(self) -> None:
        net = _make_network("libera", State.DISCONNECTED)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("RAW libera WHOIS testuser", router, client)
        assert "not connected" in lines[0]


class TestChannels:
    @pytest.mark.asyncio
    async def test_channels_all(self) -> None:
        net = _make_network("libera", State.READY, channels={"#test", "#dev"})
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CHANNELS", router, client)
        assert lines[0] == "[CHANNELS]"
        assert any("#test" in line for line in lines)
        assert any("#dev" in line for line in lines)

    @pytest.mark.asyncio
    async def test_channels_specific_network(self) -> None:
        net = _make_network("libera", State.READY, channels={"#test"})
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CHANNELS libera", router, client)
        assert lines[0] == "[CHANNELS]"
        assert any("#test" in line for line in lines)

    @pytest.mark.asyncio
    async def test_channels_unknown_network(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("CHANNELS fakenet", router, client)
        assert "Unknown network" in lines[0]

    @pytest.mark.asyncio
    async def test_channels_with_topics(self) -> None:
        net = _make_network("libera", State.READY, channels={"#test"},
                            topics={"#test": "Welcome to test"})
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CHANNELS libera", router, client)
        assert any("Welcome to test" in line for line in lines)

    @pytest.mark.asyncio
    async def test_channels_empty(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("CHANNELS libera", router, client)
        assert any("(none)" in line for line in lines)


class TestClients:
    @pytest.mark.asyncio
    async def test_clients_empty(self) -> None:
        router = _make_router()
        router.clients = []
        client = _make_client()
        lines = await commands.dispatch("CLIENTS", router, client)
        assert lines[0] == "[CLIENTS]"
        assert "(none)" in lines[1]

    @pytest.mark.asyncio
    async def test_clients_lists_connected(self) -> None:
        router = _make_router()
        c1 = _make_client("user1")
        c2 = _make_client("user2")
        router.clients = [c1, c2]
        client = _make_client()
        lines = await commands.dispatch("CLIENTS", router, client)
        assert lines[0] == "[CLIENTS]"
        assert any("user1" in line for line in lines)
        assert any("user2" in line for line in lines)
        assert any("connected" in line for line in lines)


class TestBacklog:
    @pytest.mark.asyncio
    async def test_backlog_no_backlog(self) -> None:
        router = _make_router()
        router.backlog = None
        client = _make_client()
        lines = await commands.dispatch("BACKLOG", router, client)
        assert "not available" in lines[0]

    @pytest.mark.asyncio
    async def test_backlog_stats(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.stats.return_value = [("libera", 1500)]
        router.backlog.db_size.return_value = 2_097_152  # 2 MB
        client = _make_client()
        lines = await commands.dispatch("BACKLOG", router, client)
        assert lines[0] == "[BACKLOG]"
        assert any("1,500" in line for line in lines)
        assert any("2.0 MB" in line for line in lines)

    @pytest.mark.asyncio
    async def test_backlog_specific_network(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.stats.return_value = [("libera", 42)]
        router.backlog.db_size.return_value = 4096
        client = _make_client()
        lines = await commands.dispatch("BACKLOG libera", router, client)
        assert lines[0] == "[BACKLOG]"
        assert any("42" in line for line in lines)

    @pytest.mark.asyncio
    async def test_backlog_unknown_network(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("BACKLOG fakenet", router, client)
        assert "Unknown network" in lines[0]

    @pytest.mark.asyncio
    async def test_backlog_empty(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.stats.return_value = []
        router.backlog.db_size.return_value = 1024
        client = _make_client()
        lines = await commands.dispatch("BACKLOG", router, client)
        assert any("no messages" in line for line in lines)


class TestVersion:
    @pytest.mark.asyncio
    async def test_version(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("VERSION", router, client)
        assert "[VERSION]" in lines[0]
        assert "bouncer" in lines[0]
        assert "Python" in lines[0]


class TestRehash:
    @pytest.mark.asyncio
    async def test_rehash_no_config_path(self) -> None:
        commands.CONFIG_PATH = None
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("REHASH", router, client)
        assert "config path not set" in lines[0]

    @pytest.mark.asyncio
    async def test_rehash_config_error(self) -> None:
        commands.CONFIG_PATH = Path("/nonexistent/config.toml")
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("REHASH", router, client)
        assert "config error" in lines[0]

    @pytest.mark.asyncio
    async def test_rehash_adds_and_removes(self) -> None:
        from bouncer.config import BouncerConfig, Config, NetworkConfig, ProxyConfig

        old_net = _make_network("libera", State.READY)
        router = _make_router(old_net)

        new_cfg = Config(
            bouncer=BouncerConfig(),
            proxy=ProxyConfig(),
            networks={
                "oftc": NetworkConfig(name="oftc", host="irc.oftc.net", port=6697, tls=True),
            },
        )

        commands.CONFIG_PATH = Path("/tmp/test.toml")
        with patch("bouncer.config.load", return_value=new_cfg):
            client = _make_client()
            lines = await commands.dispatch("REHASH", router, client)

        assert lines[0] == "[REHASH]"
        assert any("removed: libera" in line for line in lines)
        assert any("added: oftc" in line for line in lines)
        router.remove_network.assert_awaited()
        router.add_network.assert_awaited()


class TestAddNetwork:
    @pytest.mark.asyncio
    async def test_addnetwork_missing_args(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("ADDNETWORK", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_addnetwork_missing_host(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("ADDNETWORK testnet port=6667", router, client)
        assert "Required" in lines[0]

    @pytest.mark.asyncio
    async def test_addnetwork_already_exists(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("ADDNETWORK libera host=irc.libera.chat", router, client)
        assert "already exists" in lines[0]

    @pytest.mark.asyncio
    async def test_addnetwork_success(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch(
            "ADDNETWORK testnet host=irc.test.com port=6697 tls=yes nick=mynick channels=#a,#b",
            router, client,
        )
        assert "[ADDNETWORK]" in lines[0]
        assert "testnet" in lines[0]
        router.add_network.assert_awaited_once()
        cfg = router.add_network.call_args[0][0]
        assert cfg.name == "testnet"
        assert cfg.host == "irc.test.com"
        assert cfg.port == 6697
        assert cfg.tls is True
        assert cfg.nick == "mynick"
        assert cfg.channels == ["#a", "#b"]

    @pytest.mark.asyncio
    async def test_addnetwork_slash_in_name(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("ADDNETWORK test/net host=h", router, client)
        assert "must not contain" in lines[0]


class TestDelNetwork:
    @pytest.mark.asyncio
    async def test_delnetwork_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("DELNETWORK", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_delnetwork_unknown(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("DELNETWORK fakenet", router, client)
        assert "Unknown network" in lines[0]

    @pytest.mark.asyncio
    async def test_delnetwork_success(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("DELNETWORK libera", router, client)
        assert "[DELNETWORK]" in lines[0]
        router.remove_network.assert_awaited_once_with("libera")


class TestAutojoin:
    @pytest.mark.asyncio
    async def test_autojoin_missing_args(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("AUTOJOIN", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_autojoin_add(self) -> None:
        net = _make_network("libera", State.READY)
        net.cfg.channels = ["#test"]
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("AUTOJOIN libera +#dev", router, client)
        assert "[AUTOJOIN]" in lines[0]
        assert any("added: #dev" in line for line in lines)
        assert "#dev" in net.cfg.channels

    @pytest.mark.asyncio
    async def test_autojoin_remove(self) -> None:
        net = _make_network("libera", State.READY, channels={"#test"})
        net.cfg.channels = ["#test"]
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("AUTOJOIN libera -#test", router, client)
        assert any("removed: #test" in line for line in lines)
        assert "#test" not in net.cfg.channels

    @pytest.mark.asyncio
    async def test_autojoin_remove_missing(self) -> None:
        net = _make_network("libera", State.READY)
        net.cfg.channels = []
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("AUTOJOIN libera -#missing", router, client)
        assert any("not in autojoin" in line for line in lines)

    @pytest.mark.asyncio
    async def test_autojoin_invalid_spec(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("AUTOJOIN libera #test", router, client)
        assert "must start with" in lines[0]


class TestIdentify:
    @pytest.mark.asyncio
    async def test_identify_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("IDENTIFY", router, client)
        assert "Usage" in lines[0] or "provide" in lines[0]

    @pytest.mark.asyncio
    async def test_identify_not_connected(self) -> None:
        net = _make_network("libera", State.DISCONNECTED)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("IDENTIFY libera", router, client)
        assert "not connected" in lines[0]

    @pytest.mark.asyncio
    async def test_identify_no_creds(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.get_nickserv_creds_by_network.return_value = None
        client = _make_client()
        lines = await commands.dispatch("IDENTIFY libera", router, client)
        assert "No stored credentials" in lines[0]

    @pytest.mark.asyncio
    async def test_identify_success(self) -> None:
        net = _make_network("libera", State.READY, nick="fabesune")
        router = _make_router(net)
        router.backlog.get_nickserv_creds_by_network.return_value = ("fabesune", "secret123")
        client = _make_client()
        lines = await commands.dispatch("IDENTIFY libera", router, client)
        assert "[IDENTIFY]" in lines[0]
        net.send_raw.assert_awaited_with("PRIVMSG", "NickServ", "IDENTIFY secret123")

    @pytest.mark.asyncio
    async def test_identify_nick_switch(self) -> None:
        net = _make_network("libera", State.READY, nick="randomnick")
        router = _make_router(net)
        router.backlog.get_nickserv_creds_by_network.return_value = ("fabesune", "secret123")
        client = _make_client()
        lines = await commands.dispatch("IDENTIFY libera", router, client)
        assert any("switching nick" in line for line in lines)
        calls = net.send_raw.await_args_list
        assert any(c.args == ("NICK", "fabesune") for c in calls)


class TestRegister:
    @pytest.mark.asyncio
    async def test_register_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("REGISTER", router, client)
        assert "Usage" in lines[0] or "provide" in lines[0]

    @pytest.mark.asyncio
    async def test_register_not_ready(self) -> None:
        net = _make_network("libera", State.CONNECTING)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("REGISTER libera", router, client)
        assert "not ready" in lines[0]

    @pytest.mark.asyncio
    async def test_register_success(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("REGISTER libera", router, client)
        assert "[REGISTER]" in lines[0]


class TestDropCreds:
    @pytest.mark.asyncio
    async def test_dropcreds_no_backlog(self) -> None:
        router = _make_router()
        router.backlog = None
        client = _make_client()
        lines = await commands.dispatch("DROPCREDS libera", router, client)
        assert "not available" in lines[0]

    @pytest.mark.asyncio
    async def test_dropcreds_missing_arg(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("DROPCREDS", router, client)
        assert "Usage" in lines[0]

    @pytest.mark.asyncio
    async def test_dropcreds_specific_nick(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        client = _make_client()
        lines = await commands.dispatch("DROPCREDS libera fabesune", router, client)
        assert "[DROPCREDS]" in lines[0]
        assert any("deleted: fabesune" in line for line in lines)
        router.backlog.delete_nickserv_creds.assert_awaited_once_with("libera", "fabesune")

    @pytest.mark.asyncio
    async def test_dropcreds_all(self) -> None:
        net = _make_network("libera", State.READY)
        router = _make_router(net)
        router.backlog.list_nickserv_creds.return_value = [
            ("libera", "nick1", "a@b.c", "", 0.0, "verified"),
            ("libera", "nick2", "d@e.f", "", 0.0, "pending"),
        ]
        client = _make_client()
        lines = await commands.dispatch("DROPCREDS libera", router, client)
        assert any("deleted: nick1" in line for line in lines)
        assert any("deleted: nick2" in line for line in lines)

    @pytest.mark.asyncio
    async def test_dropcreds_unknown_network(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("DROPCREDS fakenet", router, client)
        assert "Unknown network" in lines[0]


class TestUnknownCommand:
    @pytest.mark.asyncio
    async def test_unknown_command(self) -> None:
        router = _make_router()
        client = _make_client()
        lines = await commands.dispatch("FOOBAR", router, client)
        assert "Unknown command" in lines[0]
        assert "HELP" in lines[1]