from __future__ import annotations

import os
import time
from unittest.mock import MagicMock, patch

import pytest

from yuxi.channels.adapters.irc.normalize import (
    build_allowlist_candidates,
    normalize_allow_entry,
    looks_like_irc_target_id,
    normalize_irc_messaging_target,
    resolve_targets,
    format_irc_sender_id,
    resolve_allowlist_match,
)
from yuxi.channels.adapters.irc.accounts import (
    resolve_merged_account_config,
    list_irc_account_ids,
    list_enabled_irc_accounts,
    get_account_config,
    is_configured,
    resolve_default_irc_account_id,
)
from yuxi.channels.adapters.irc.known_servers import (
    KNOWN_IRC_SERVERS,
    list_known_servers,
    lookup_server,
    get_default_server,
)
from yuxi.channels.adapters.irc.secret_contract import (
    IRC_SECRET_TARGETS,
    SecretTarget,
    list_secret_targets,
    get_secret_target,
    audit_secrets,
)
from yuxi.channels.adapters.irc.directory import (
    DirectoryUser,
    DirectoryGroup,
    list_users,
    list_groups,
)
from yuxi.channels.adapters.irc.doctor import (
    DoctorDiagnosis,
    diagnose,
)
from yuxi.channels.adapters.irc.config_schema import (
    get_config_schema,
    get_schema_keys,
    validate_config,
)
from yuxi.channels.adapters.irc.setup_core import (
    update_irc_account_config,
    remove_irc_account_config,
    set_irc_server_config,
    set_irc_nick_config,
    set_irc_auth_config,
)
from yuxi.channels.adapters.irc.setup_entry import (
    get_setup_entry,
    register_bundled_channel_setup,
)
from yuxi.channels.adapters.irc.commands import (
    should_handle_text_commands,
    has_control_command,
    parse_command,
    check_command_access,
    handle_command,
)
from yuxi.channels.adapters.irc.security import (
    IRCSecurityConfig,
    SecurityCheckResult,
    collect_security_warnings,
    _find_mutable_allowlist_entries,
)
from yuxi.channels.adapters.irc.send_cache import (
    SentMessageCache,
    SentMessageEntry,
)
from yuxi.channels.adapters.irc.formatter import (
    format_outbound,
    convert_markdown_tables,
)
from yuxi.channels.adapters.irc.nickserv import (
    nickserv_identify,
    nickserv_ghost,
    nickserv_recover,
    nickserv_release,
    nickserv_info,
    nickserv_status,
)
from yuxi.channels.adapters.irc.media_vision import (
    extract_media_urls,
    has_media_url,
    analyze_urls,
)
from yuxi.channels.adapters.irc.protocol import (
    parse_irc_tags_dict,
    extract_account_from_tags,
    is_identified,
    parse_irc_tags,
)
from yuxi.channels.adapters.irc.channel_runtime import ChannelRuntime, _merge_modes
from yuxi.channels.adapters.irc.splits import (
    split_markdown,
    split_irc_text,
)
from yuxi.channels.adapters.irc.auth import (
    resolve_password,
    get_server_password,
    nick_recover,
)
from yuxi.channels.adapters.irc.ctcp import (
    handle_ctcp,
    extract_ctcp_action,
    supports_ctcp,
)
from yuxi.channels.adapters.irc.config_ui_hints import get_config_ui_hints
from yuxi.channels.models import (
    ChannelIdentity,
    ChannelResponse,
    ChannelType,
)


# ========================================================================
# normalize.py - Allowlist 候选/匹配/规范化
# ========================================================================

class TestBuildAllowlistCandidates:
    def test_basic_nick(self):
        candidates = build_allowlist_candidates("alice")
        assert candidates == ["alice"]

    def test_with_user(self):
        candidates = build_allowlist_candidates("alice", sender_user="user1")
        assert "alice!user1" in candidates

    def test_with_host(self):
        candidates = build_allowlist_candidates("alice", sender_host="example.com")
        assert "alice@example.com" in candidates

    def test_with_user_and_host(self):
        candidates = build_allowlist_candidates("alice", "user1", "example.com")
        assert "alice!user1@example.com" in candidates
        assert len(candidates) == 4

    def test_special_chars_in_nick(self):
        candidates = build_allowlist_candidates("nick[name]")
        assert "nick[name]" in candidates

    def test_empty_user_and_host(self):
        candidates = build_allowlist_candidates("alice", None, None)
        assert candidates == ["alice"]


class TestResolveAllowlistMatch:
    def test_exact_match(self):
        result = resolve_allowlist_match(["alice"], ["alice", "bob"])
        assert result == "alice"

    def test_no_match(self):
        result = resolve_allowlist_match(["charlie"], ["alice", "bob"])
        assert result is None

    def test_wildcard_star(self):
        result = resolve_allowlist_match(["anyone"], ["*"])
        assert result == "*"

    def test_glob_match(self):
        result = resolve_allowlist_match(["alice!user@host"], ["alice!*@*"])
        assert result == "alice!*@*"

    def test_multiple_candidates_first_wins(self):
        candidates = ["alice!user@host", "alice@host", "alice"]
        result = resolve_allowlist_match(candidates, ["alice"])
        assert result == "alice"

    def test_full_mask_before_wildcard(self):
        candidates = ["bob!user@host"]
        result = resolve_allowlist_match(candidates, ["bob!user@host", "*"])
        assert result == "bob!user@host"

    def test_empty_allowlist(self):
        result = resolve_allowlist_match(["alice"], [])
        assert result is None

    def test_empty_candidates(self):
        result = resolve_allowlist_match([], ["alice"])
        assert result is None

    def test_glob_match_host(self):
        result = resolve_allowlist_match(["alice@trusted.com"], ["*@trusted.com"])
        assert result == "*@trusted.com"


class TestNormalizeAllowEntry:
    def test_strips_irc_prefix(self):
        assert normalize_allow_entry("irc:alice") == "alice"
        assert normalize_allow_entry("irc:user:alice") == "alice"

    def test_strips_user_prefix(self):
        assert normalize_allow_entry("user:alice") == "alice"

    def test_no_prefix_unchanged(self):
        assert normalize_allow_entry("alice") == "alice"

    def test_mask_with_at(self):
        assert normalize_allow_entry("alice@host") == "alice@host"


class TestLooksLikeIrcTargetId:
    def test_channel_prefix(self):
        assert looks_like_irc_target_id("irc:channel:#test") is True

    def test_user_prefix(self):
        assert looks_like_irc_target_id("irc:user:alice") is True

    def test_full_mask(self):
        assert looks_like_irc_target_id("nick!user@host") is True

    def test_plain_nick(self):
        assert looks_like_irc_target_id("alice") is False

    def test_channel_hash(self):
        assert looks_like_irc_target_id("#channel") is False


class TestNormalizeIrcMessagingTarget:
    def test_channel_prefix(self):
        assert normalize_irc_messaging_target("irc:channel:#test") == ("group", "#test")

    def test_user_prefix(self):
        assert normalize_irc_messaging_target("irc:user:alice") == ("direct", "alice")

    def test_hash_channel(self):
        assert normalize_irc_messaging_target("#channel") == ("group", "#channel")

    def test_ampersand_channel(self):
        assert normalize_irc_messaging_target("&channel") == ("group", "&channel")

    def test_plain_nick(self):
        assert normalize_irc_messaging_target("alice") == ("direct", "alice")

    def test_nick_with_irc_prefix(self):
        assert normalize_irc_messaging_target("irc:alice") == ("direct", "alice")


class TestResolveTargets:
    def test_channel_target(self):
        result = resolve_targets("#test")
        assert result["kind"] == "group"
        assert result["id"] == "#test"

    def test_user_target(self):
        result = resolve_targets("alice")
        assert result["kind"] == "direct"


class TestFormatIrcSenderId:
    def test_full(self):
        assert format_irc_sender_id("nick", "user", "host") == "nick!user@host"

    def test_user_only(self):
        assert format_irc_sender_id("nick", "user") == "nick!user"

    def test_host_only(self):
        assert format_irc_sender_id("nick", host="host") == "nick@host"

    def test_nick_only(self):
        assert format_irc_sender_id("nick") == "nick"

    def test_none_user_and_host(self):
        assert format_irc_sender_id("nick", None, None) == "nick"


# ========================================================================
# accounts.py - 多账户/合并/解析
# ========================================================================

class TestAccountsResolveMergedConfig:
    def test_basic_merge(self):
        base = {"server": "irc.test.com", "nick": "basebot"}
        account = {"nick": "accountbot", "port": 7000}
        merged = resolve_merged_account_config(base, account)
        assert merged["server"] == "irc.test.com"
        assert merged["nick"] == "accountbot"
        assert merged["port"] == 7000

    def test_deep_merge(self):
        base = {"commands": {"enabled": False, "custom": {}}}
        account = {"commands": {"enabled": True}}
        merged = resolve_merged_account_config(base, account)
        assert merged["commands"]["enabled"] is True
        assert "custom" in merged["commands"]

    def test_original_unchanged(self):
        base = {"server": "irc.test.com"}
        account = {"port": 7000}
        resolve_merged_account_config(base, account)
        assert "port" not in base

    def test_empty_override(self):
        base = {"server": "irc.test.com", "nick": "bot"}
        merged = resolve_merged_account_config(base, {})
        assert merged == base
        assert merged is not base


class TestAccountsListIds:
    def test_normal_accounts(self):
        config = {"accounts": {"default": {}, "alt": {}}}
        assert list_irc_account_ids(config) == ["default", "alt"]

    def test_no_accounts(self):
        assert list_irc_account_ids({}) == []

    def test_accounts_not_dict(self):
        assert list_irc_account_ids({"accounts": "string"}) == []


class TestAccountsListEnabled:
    def test_enabled_accounts(self):
        config = {
            "server": "irc.test.com",
            "nick": "topbot",
            "accounts": {
                "default": {"enabled": True},
                "disabled_one": {"enabled": False},
                "implicit": {},
            },
        }
        enabled = list_enabled_irc_accounts(config)
        assert len(enabled) == 2
        ids = {a["_account_id"] for a in enabled}
        assert ids == {"default", "implicit"}

    def test_merged_inherits_base(self):
        config = {
            "server": "irc.test.com",
            "nick": "topbot",
            "accounts": {"default": {}},
        }
        enabled = list_enabled_irc_accounts(config)
        assert enabled[0]["server"] == "irc.test.com"
        assert enabled[0]["nick"] == "topbot"

    def test_no_accounts(self):
        assert list_enabled_irc_accounts({}) == []


class TestAccountsGetConfig:
    def test_existing_account(self):
        config = {
            "server": "irc.test.com",
            "nick": "topbot",
            "accounts": {"default": {"nick": "override"}},
        }
        account = get_account_config(config, "default")
        assert account["nick"] == "override"
        assert account["server"] == "irc.test.com"

    def test_disabled_account(self):
        config = {
            "accounts": {"default": {"enabled": False}},
        }
        assert get_account_config(config, "default") is None

    def test_nonexistent_account(self):
        assert get_account_config({}, "nonexistent") is None


class TestAccountsIsConfigured:
    def test_config_only(self):
        assert is_configured({"server": "irc.test.com", "nick": "bot"}) is True

    def test_missing_nick(self):
        assert is_configured({"server": "irc.test.com"}) is False

    def test_missing_server(self):
        assert is_configured({"nick": "bot"}) is False

    def test_env_fallback(self, monkeypatch):
        monkeypatch.setenv("IRC_HOST", "irc.test.com")
        monkeypatch.setenv("IRC_NICK", "envbot")
        assert is_configured({}) is True

    def test_config_overrides_env(self, monkeypatch):
        monkeypatch.setenv("IRC_HOST", "wrong.example.com")
        assert is_configured({"server": "correct.com", "nick": "bot"}) is True


class TestAccountsResolveDefaultId:
    def test_default_exists(self):
        config = {"accounts": {"default": {}, "alt": {}}}
        assert resolve_default_irc_account_id(config) == "default"

    def test_no_default_uses_first(self):
        config = {"accounts": {"alt1": {}, "alt2": {}}}
        assert resolve_default_irc_account_id(config) == "alt1"

    def test_no_accounts(self):
        assert resolve_default_irc_account_id({}) == "default"

    def test_custom_default(self):
        config = {"accounts": {"main": {}}}
        assert resolve_default_irc_account_id(config, default="main") == "main"


# ========================================================================
# known_servers.py
# ========================================================================

class TestKnownServers:
    def test_known_servers_size(self):
        assert len(KNOWN_IRC_SERVERS) >= 8

    def test_list_known_servers(self):
        servers = list_known_servers()
        assert len(servers) >= 8
        for s in servers:
            assert "name" in s
            assert "host" in s
            assert "port" in s
            assert "tls" in s

    def test_lookup_exact(self):
        server = lookup_server("Libera.Chat")
        assert server is not None
        assert server["host"] == "irc.libera.chat"
        assert server["port"] == 6697

    def test_lookup_case_insensitive(self):
        server = lookup_server("libera.chat")
        assert server is not None
        assert server["host"] == "irc.libera.chat"

    def test_lookup_nonexistent(self):
        assert lookup_server("nonexistent") is None

    def test_get_default_server(self):
        default = get_default_server()
        assert default["name"] == "Libera.Chat"
        assert default["host"] == "irc.libera.chat"

    def test_twitch_server(self):
        server = lookup_server("Twitch")
        assert server is not None
        assert server["host"] == "irc.chat.twitch.tv"


# ========================================================================
# secret_contract.py
# ========================================================================

class TestSecretTarget:
    def test_dataclass_creation(self):
        st = SecretTarget(
            key="test_key",
            label="Test Label",
            description="A test secret",
            env_var="TEST_ENV",
        )
        assert st.key == "test_key"
        assert st.label == "Test Label"
        assert st.env_var == "TEST_ENV"


class TestListSecretTargets:
    def test_returns_all_targets(self):
        targets = list_secret_targets()
        assert len(targets) == len(IRC_SECRET_TARGETS)
        keys = {t["key"] for t in targets}
        assert "nickserv_password" in keys
        assert "sasl_password" in keys
        assert "server_password" in keys

    def test_target_structure(self):
        targets = list_secret_targets()
        for t in targets:
            assert "key" in t
            assert "label" in t
            assert "description" in t
            assert "env_var" in t
            assert "config_path" in t


class TestGetSecretTarget:
    def test_existing_key(self):
        target = get_secret_target("sasl_password")
        assert target is not None
        assert target["key"] == "sasl_password"
        assert target["env_var"] == "IRC_SASL_PASSWORD"

    def test_nonexistent_key(self):
        assert get_secret_target("nonexistent") is None


class TestAuditSecrets:
    def test_all_configured(self):
        config = {
            "sasl_password": "secret1",
            "nickserv_password": "secret2",
            "password": "serverpass",
            "nickserv_password_file": "/path/to/file",
        }
        findings = audit_secrets(config)
        for f in findings:
            assert f["key"] in {t.key for t in IRC_SECRET_TARGETS}
            assert "configured" in f
            assert "sources" in f

    def test_nothing_configured(self):
        findings = audit_secrets({})
        assert all(not f["configured"] for f in findings)

    def test_env_var_detection(self, monkeypatch):
        monkeypatch.setenv("IRC_SASL_PASSWORD", "env_secret")
        findings = audit_secrets({})
        sasl = next(f for f in findings if f["key"] == "sasl_password")
        assert sasl["configured"] is True
        assert any("env.IRC_SASL_PASSWORD" in s for s in sasl["sources"])


# ========================================================================
# directory.py
# ========================================================================

class TestDirectoryDataclasses:
    def test_directory_user(self):
        user = DirectoryUser(id="alice", display_name="Alice")
        assert user.id == "alice"
        assert user.display_name == "Alice"

    def test_directory_group(self):
        group = DirectoryGroup(id="#test", display_name="#test", member_count=42)
        assert group.id == "#test"
        assert group.member_count == 42


class TestListUsers:
    def test_from_allow_from(self):
        config = {"allowFrom": ["alice!user@host", "bob@example.com"]}
        users = list_users(config)
        assert len(users) == 2
        names = {u.id for u in users}
        assert names == {"alice", "bob"}

    def test_from_group_allow_from(self):
        config = {"groupAllowFrom": ["charlie!user@host"]}
        users = list_users(config)
        assert len(users) == 1
        assert users[0].id == "charlie"

    def test_from_groups_allow_from(self):
        config = {
            "groups": {
                "#test": {"allowFrom": ["dave!user@host"]},
            }
        }
        users = list_users(config)
        assert len(users) == 1
        assert users[0].id == "dave"

    def test_dedup_across_sources(self):
        config = {
            "allowFrom": ["alice!user@host"],
            "groupAllowFrom": ["alice@example.com"],
        }
        users = list_users(config)
        assert len(users) == 1

    def test_ignore_star(self):
        config = {"allowFrom": ["*"]}
        users = list_users(config)
        assert len(users) == 0

    def test_empty_entry(self):
        config = {"allowFrom": [""]}
        users = list_users(config)
        assert len(users) == 0

    def test_sorted_alphabetically(self):
        config = {"allowFrom": ["zoe!x@y", "alice!x@y"]}
        users = list_users(config)
        assert users[0].id == "alice"
        assert users[1].id == "zoe"


class TestListGroups:
    def test_from_auto_join_channels(self):
        config = {"auto_join_channels": ["#general", "&support"]}
        groups = list_groups(config)
        assert len(groups) == 2
        names = {g.id for g in groups}
        assert names == {"#general", "&support"}

    def test_with_group_config(self):
        config = {
            "auto_join_channels": ["#test"],
            "groups": {"#test": {"skills": ["skill1"], "enabled": True}},
        }
        groups = list_groups(config)
        assert len(groups) == 1
        assert groups[0].metadata == {"skills": ["skill1"], "systemPrompt": None, "enabled": True}

    def test_extra_groups(self):
        config = {
            "groups": {"extra_group": {"some": "config"}},
        }
        groups = list_groups(config)
        ids = {g.id for g in groups}
        assert "extra_group" in ids

    def test_skip_channel_names_in_groups(self):
        config = {
            "groups": {"*": {}, "#already_in_channels": {}, "&also": {}},
        }
        groups = list_groups(config)
        assert len(groups) == 0

    def test_env_channels(self, monkeypatch):
        monkeypatch.setenv("IRC_CHANNELS", "#env1, #env2")
        config = {}
        groups = list_groups(config)
        assert len(groups) == 2


# ========================================================================
# doctor.py
# ========================================================================

class TestDoctorDiagnosis:
    def test_default_ok(self):
        d = DoctorDiagnosis()
        assert d.status == "ok"
        assert d.warnings == []
        assert d.errors == []
        assert d.checks == []


class TestDiagnose:
    def test_tls_enabled(self):
        result = diagnose({}, use_tls=True)
        tls_check = next(c for c in result.checks if c["name"] == "tls")
        assert tls_check["status"] == "ok"

    def test_tls_disabled(self):
        result = diagnose({}, use_tls=False)
        tls_check = next(c for c in result.checks if c["name"] == "tls")
        assert tls_check["status"] == "warning"
        assert len(result.warnings) >= 1

    def test_nickserv_enabled(self):
        result = diagnose({}, nickserv_enabled=True)
        ns_check = next(c for c in result.checks if c["name"] == "nickserv")
        assert ns_check["status"] == "ok"

    def test_nickserv_disabled(self):
        result = diagnose({}, nickserv_enabled=False)
        ns_check = next(c for c in result.checks if c["name"] == "nickserv")
        assert ns_check["status"] == "warning"

    def test_nickserv_register_warning(self):
        result = diagnose({}, nickserv_enabled=True, nickserv_register=True)
        ns_check = next(c for c in result.checks if c["name"] == "nickserv")
        assert ns_check["status"] == "warning"

    def test_open_group_policy_warning(self):
        sec_config = IRCSecurityConfig(group_policy="open")
        result = diagnose({}, security_config=sec_config)
        gp_check = next(c for c in result.checks if c["name"] == "group_policy")
        assert gp_check["status"] == "warning"

    def test_mutable_allowlist_warning(self):
        sec_config = IRCSecurityConfig(allow_from=["alice"])
        result = diagnose({}, security_config=sec_config)
        assert any("Mutable" in w for w in result.warnings)

    def test_no_security_config(self):
        result = diagnose({})
        assert result.checks


# ========================================================================
# config_schema.py
# ========================================================================

class TestGetConfigSchema:
    def test_returns_dict(self):
        schema = get_config_schema()
        assert isinstance(schema, dict)
        assert "server" in schema
        assert "nick" in schema
        assert "port" in schema

    def test_get_schema_keys(self):
        keys = get_schema_keys()
        assert "server" in keys
        assert "nick" in keys
        assert len(keys) > 20


class TestValidateConfig:
    def test_valid_minimal_config(self):
        errors = validate_config({"server": "irc.test.com", "nick": "bot"})
        assert errors == []

    def test_missing_server(self):
        errors = validate_config({"nick": "bot"})
        assert any("server" in e for e in errors)

    def test_missing_nick(self):
        errors = validate_config({"server": "irc.test.com"})
        assert any("nick" in e for e in errors)

    def test_invalid_dm_policy(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "dm_policy": "invalid",
        })
        assert any("dm_policy" in e for e in errors)

    def test_invalid_group_policy(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "group_policy": "invalid",
        })
        assert any("group_policy" in e for e in errors)

    def test_invalid_port_type(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "port": "not_a_number",
        })
        assert any("port" in e for e in errors)

    def test_port_too_low(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "port": 0,
        })
        assert any("port" in e for e in errors)

    def test_port_too_high(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "port": 99999,
        })
        assert any("port" in e for e in errors)

    def test_invalid_chunker_mode(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "chunker_mode": "invalid",
        })
        assert any("chunker_mode" in e for e in errors)

    def test_nicserv_register_missing_email(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "nickserv_register": True,
        })
        assert any("nickserv_register_email" in e for e in errors)

    def test_nicserv_register_with_email(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "nickserv_register": True,
            "nickserv_register_email": "bot@test.com",
        })
        assert not any("nickserv_register_email" in e for e in errors)

    def test_dm_policy_open_without_star(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "dm_policy": "open",
            "allowFrom": [],
        })
        assert any("allowFrom" in e for e in errors)

    def test_dotted_keys_in_config(self):
        errors = validate_config({
            "server": "irc.test.com",
            "nick": "bot",
            "commands": {"enabled": True},
        })
        assert len(errors) == 0


# ========================================================================
# setup_core.py
# ========================================================================

class TestUpdateIrcAccountConfig:
    def test_update_simple(self):
        existing = {"server": "old.server.com", "nick": "oldbot"}
        result = update_irc_account_config(existing, {"server": "new.server.com"})
        assert result["server"] == "new.server.com"
        assert result["nick"] == "oldbot"

    def test_does_not_mutate_original(self):
        existing = {"server": "old.server.com"}
        update_irc_account_config(existing, {"server": "new.server.com"})
        assert existing["server"] == "old.server.com"

    def test_deep_merge(self):
        existing = {"commands": {"enabled": False, "custom": {"a": "b"}}}
        result = update_irc_account_config(existing, {"commands": {"enabled": True}})
        assert result["commands"]["enabled"] is True
        assert result["commands"]["custom"] == {"a": "b"}


class TestRemoveIrcAccountConfig:
    def test_remove_existing_keys(self):
        existing = {"server": "irc.test.com", "nick": "bot", "port": 6667}
        result = remove_irc_account_config(existing, ["port"])
        assert "port" not in result
        assert "server" in result

    def test_remove_nonexistent_key(self):
        existing = {"server": "irc.test.com"}
        result = remove_irc_account_config(existing, ["nonexistent"])
        assert result == {"server": "irc.test.com"}

    def test_remove_multiple_keys(self):
        existing = {"a": 1, "b": 2, "c": 3}
        result = remove_irc_account_config(existing, ["a", "b"])
        assert result == {"c": 3}

    def test_does_not_mutate_original(self):
        existing = {"server": "irc.test.com", "port": 6667}
        remove_irc_account_config(existing, ["port"])
        assert "port" in existing


class TestSetIrcServerConfig:
    def test_basic(self):
        config = {}
        result = set_irc_server_config(config, "irc.test.com")
        assert result["server"] == "irc.test.com"
        assert result["port"] == 6697
        assert result["use_tls"] is True

    def test_custom_port(self):
        result = set_irc_server_config({}, "irc.test.com", port=7000, use_tls=False)
        assert result["port"] == 7000
        assert result["use_tls"] is False


class TestSetIrcNickConfig:
    def test_basic(self):
        result = set_irc_nick_config({}, "mybot")
        assert result["nick"] == "mybot"
        assert "username" not in result

    def test_with_username(self):
        result = set_irc_nick_config({}, "mybot", username="myuser")
        assert result["username"] == "myuser"

    def test_with_realname(self):
        result = set_irc_nick_config({}, "mybot", realname="My IRC Bot")
        assert result["realname"] == "My IRC Bot"


class TestSetIrcAuthConfig:
    def test_none_auth(self):
        result = set_irc_auth_config({}, auth_type="none")
        assert result.get("use_sasl") is False
        assert "nickserv_enabled" not in result

    def test_sasl_auth(self):
        result = set_irc_auth_config(
            {}, auth_type="sasl", sasl_username="user", sasl_password="pass"
        )
        assert result["use_sasl"] is True
        assert result["sasl_username"] == "user"
        assert result["sasl_password"] == "pass"

    def test_nickserv_auth(self):
        result = set_irc_auth_config(
            {}, auth_type="nickserv", nickserv_password="ns_pass"
        )
        assert result["use_sasl"] is False
        assert result["nickserv_enabled"] is True
        assert result["nickserv_password"] == "ns_pass"

    def test_with_server_password(self):
        result = set_irc_auth_config({}, password="serverpass")
        assert result["password"] == "serverpass"


# ========================================================================
# setup_entry.py
# ========================================================================

class TestSetupEntry:
    def test_get_setup_entry(self):
        entry = get_setup_entry()
        assert entry["channel_id"] == "irc"
        assert entry["label"] == "IRC"
        assert len(entry["steps"]) >= 4

    def test_register_bundled_channel_setup(self):
        entry = register_bundled_channel_setup()
        assert entry == get_setup_entry()


# ========================================================================
# commands.py
# ========================================================================

class TestShouldHandleTextCommands:
    def test_enabled_with_command(self):
        config = {"commands": {"enabled": True}}
        assert should_handle_text_commands("!help", config) is True

    def test_enabled_with_dot_command(self):
        config = {"commands": {"enabled": True}}
        assert should_handle_text_commands(".ping", config) is True

    def test_disabled(self):
        config = {"commands": {"enabled": False}}
        assert should_handle_text_commands("!help", config) is False

    def test_not_a_command(self):
        config = {"commands": {"enabled": True}}
        assert should_handle_text_commands("hello", config) is False

    def test_whitespace_before_command(self):
        config = {"commands": {"enabled": True}}
        assert should_handle_text_commands("  !help", config) is True


class TestHasControlCommand:
    def test_exclamation(self):
        config = {"commands": {"enabled": True}}
        assert has_control_command("!help", config) is True

    def test_dot(self):
        config = {"commands": {"enabled": True}}
        assert has_control_command(".ping", config) is True

    def test_plain_text(self):
        config = {"commands": {"enabled": True}}
        assert has_control_command("hello", config) is False

    def test_disabled_commands(self):
        config = {"commands": {"enabled": False}}
        assert has_control_command("!help", config) is False


class TestParseCommand:
    def test_simple(self):
        cmd, args = parse_command("!help")
        assert cmd == "help"
        assert args == []

    def test_with_args(self):
        cmd, args = parse_command("!echo hello world")
        assert cmd == "echo"
        assert args == ["hello", "world"]

    def test_dot_command(self):
        cmd, args = parse_command(".ping")
        assert cmd == "ping"


class TestCheckCommandAccess:
    def test_no_access_groups(self):
        config = {"commands": {"enabled": True, "useAccessGroups": False}}
        assert check_command_access("alice", "ping", config) is True

    def test_no_acl_for_command(self):
        config = {"commands": {"enabled": True, "useAccessGroups": True}}
        assert check_command_access("alice", "help", config) is True

    def test_acl_allows_user(self):
        config = {
            "commands": {
                "enabled": True,
                "useAccessGroups": True,
                "acl": {"ping": ["admins"]},
            }
        }
        access_groups = {"admins": ["alice"]}
        assert check_command_access("alice", "ping", config, access_groups) is True

    def test_acl_denies_user(self):
        config = {
            "commands": {
                "enabled": True,
                "useAccessGroups": True,
                "acl": {"ping": ["admins"]},
            }
        }
        assert check_command_access("bob", "ping", config, {"admins": []}) is False

    def test_wildcard_acl(self):
        config = {
            "commands": {
                "enabled": True,
                "useAccessGroups": True,
                "acl": {"*": ["admins"]},
            }
        }
        assert check_command_access("alice", "custom", config, {"admins": ["alice"]}) is True


class TestHandleCommand:
    @pytest.mark.asyncio
    async def test_help(self):
        send_fn = MagicMock()
        response = await handle_command("help", [], "user", "#test", {}, send_fn)
        assert "Available commands" in response

    @pytest.mark.asyncio
    async def test_ping(self):
        response = await handle_command("ping", [], "user", "#test", {}, MagicMock())
        assert response == "Pong!"

    @pytest.mark.asyncio
    async def test_status(self):
        response = await handle_command("status", [], "user", "#test", {}, MagicMock())
        assert "running" in response

    @pytest.mark.asyncio
    async def test_about(self):
        response = await handle_command("about", [], "user", "#test", {}, MagicMock())
        assert "ForcePilot" in response

    @pytest.mark.asyncio
    async def test_unknown_command(self):
        response = await handle_command("nonexistent", [], "user", "#test", {}, MagicMock())
        assert response is None

    @pytest.mark.asyncio
    async def test_custom_command_string(self):
        config = {"commands": {"custom": {"hello": "Hello, world!"}}}
        response = await handle_command("hello", [], "user", "#test", config, MagicMock())
        assert response == "Hello, world!"

    @pytest.mark.asyncio
    async def test_custom_command_dict(self):
        config = {"commands": {"custom": {"info": {"response": "Bot Info v1.0"}}}}
        response = await handle_command("info", [], "user", "#test", config, MagicMock())
        assert response == "Bot Info v1.0"

    @pytest.mark.asyncio
    async def test_help_lists_custom_commands(self):
        config = {"commands": {"custom": {"hello": "hi"}}}
        response = await handle_command("help", [], "user", "#test", config, MagicMock())
        assert "hello" in response


# ========================================================================
# security.py - IRCSecurityConfig
# ========================================================================

class TestSecurityCheckResult:
    def test_default(self):
        result = SecurityCheckResult(allowed=True, reason="test")
        assert result.allowed is True
        assert result.reason == "test"
        assert result.challenge_id is None


class TestIRCSecurityConfigCheckDM:
    def test_open_policy(self):
        config = IRCSecurityConfig(dm_policy="open")
        result = config.check_dm("prefix", "alice")
        assert result.allowed is True
        assert "open" in result.reason

    def test_disabled_policy(self):
        config = IRCSecurityConfig(dm_policy="disabled")
        result = config.check_dm("prefix", "alice")
        assert result.allowed is False

    def test_pairing_no_allowlist(self):
        config = IRCSecurityConfig(dm_policy="pairing")
        result = config.check_dm("prefix", "alice")
        assert result.allowed is False
        assert result.challenge_id is not None

    def test_pairing_with_match(self):
        config = IRCSecurityConfig(
            dm_policy="pairing", allow_from=["alice!user@host"]
        )
        result = config.check_dm("alice!user@host", "alice")
        assert result.allowed is True

    def test_open_policy_allows_anyone(self):
        config = IRCSecurityConfig(dm_policy="open", allow_from=["alice"])
        result = config.check_dm("prefix", "bob")
        assert result.allowed is True
        assert "open" in result.reason

    def test_dangerously_allow_name_matching(self):
        config = IRCSecurityConfig(
            dm_policy="pairing",
            allow_from=["alice"],
            dangerously_allow_name_matching=True,
        )
        result = config.check_dm("alice!user@host", "alice")
        assert result.allowed is True


class TestIRCSecurityConfigCheckGroup:
    def test_open_policy(self):
        config = IRCSecurityConfig(group_policy="open")
        result, _resolved = config.check_group("#test", "anyone!x@y", "anyone")
        assert result.allowed is True

    def test_disabled_policy(self):
        config = IRCSecurityConfig(group_policy="disabled")
        result, _resolved = config.check_group("#test", "user!x@y", "user")
        assert result.allowed is False

    def test_allowlist_match(self):
        config = IRCSecurityConfig(group_allow_from=["trusted!user@host"])
        result, _resolved = config.check_group("#test", "trusted!user@host", "trusted")
        assert result.allowed is True

    def test_allowlist_no_match(self):
        config = IRCSecurityConfig(group_allow_from=["trusted!user@host"])
        result, _resolved = config.check_group("#test", "untrusted!x@y", "untrusted")
        assert result.allowed is False

    def test_channel_disabled(self):
        config = IRCSecurityConfig(
            groups={"#test": {"enabled": False}, "#other": {}}
        )
        result, _resolved = config.check_group("#test", "user!x@y", "user")
        assert result.allowed is False

    def test_channel_specific_allowlist(self):
        config = IRCSecurityConfig(
            groups={"#test": {"allowFrom": ["channel_user!x@y"]}}
        )
        result, _resolved = config.check_group("#test", "channel_user!x@y", "channel_user")
        assert result.allowed is True

    def test_fallback_to_allow_from(self):
        config = IRCSecurityConfig(
            allow_from=["global!user@host"],
            group_allow_from_fallback_to_allow_from=True,
        )
        result, _resolved = config.check_group("#test", "global!user@host", "global")
        assert result.allowed is True


class TestIRCSecurityConfigCheckMention:
    def test_mentioned(self):
        config = IRCSecurityConfig()
        assert config.check_mention("hey mybot help", "mybot") is True

    def test_not_mentioned(self):
        config = IRCSecurityConfig()
        assert config.check_mention("hello everyone", "mybot") is False

    def test_require_mention_false(self):
        config = IRCSecurityConfig()
        resolved = {"requireMention": False}
        assert config.check_mention("random text", "mybot", resolved_config=resolved) is True


class TestCollectSecurityWarnings:
    def test_tls_warning(self):
        warnings = collect_security_warnings(None, use_tls=False)
        assert any("TLS" in w for w in warnings)

    def test_nickserv_warning(self):
        warnings = collect_security_warnings(None, nickserv_enabled=False)
        assert any("NickServ" in w for w in warnings)

    def test_open_group_policy(self):
        config = IRCSecurityConfig(group_policy="open")
        warnings = collect_security_warnings(config)
        assert any("open" in w.lower() for w in warnings)

    def test_mutable_allowlist_entry(self):
        config = IRCSecurityConfig(allow_from=["plainnick"])
        warnings = collect_security_warnings(config)
        assert any("Mutable" in w for w in warnings)


# ========================================================================
# send_cache.py
# ========================================================================

class TestSentMessageEntry:
    def test_creation(self):
        entry = SentMessageEntry(
            message_id="msg1", chat_id="#test", text="hello", sent_at=12345.0
        )
        assert entry.message_id == "msg1"
        assert entry.status == "sent"


class TestSentMessageCache:
    def test_put_and_get(self):
        cache = SentMessageCache()
        cache.put("msg1", "#test", "hello")
        entry = cache.get("msg1")
        assert entry is not None
        assert entry.text == "hello"

    def test_get_nonexistent(self):
        cache = SentMessageCache()
        assert cache.get("nonexistent") is None

    def test_update_status(self):
        cache = SentMessageCache()
        cache.put("msg1", "#test", "hello")
        assert cache.update_status("msg1", "delivered") is True
        assert cache.get("msg1").status == "delivered"

    def test_update_status_nonexistent(self):
        cache = SentMessageCache()
        assert cache.update_status("nonexistent", "delivered") is False

    def test_remove(self):
        cache = SentMessageCache()
        cache.put("msg1", "#test", "hello")
        assert cache.remove("msg1") is True
        assert cache.get("msg1") is None

    def test_remove_nonexistent(self):
        cache = SentMessageCache()
        assert cache.remove("nonexistent") is False

    def test_size(self):
        cache = SentMessageCache()
        cache.put("a", "#t", "x")
        cache.put("b", "#t", "y")
        assert cache.size() == 2

    def test_clear(self):
        cache = SentMessageCache()
        cache.put("a", "#t", "x")
        cache.clear()
        assert cache.size() == 0

    def test_eviction(self):
        cache = SentMessageCache(max_entries=3)
        for i in range(5):
            cache.put(f"msg{i}", "#test", f"text{i}")
        assert cache.size() <= 3

    def test_ttl_expired(self):
        cache = SentMessageCache()
        cache.put("msg1", "#test", "hello")
        entry = cache._entries["msg1"]
        entry.sent_at = time.monotonic() - cache.TTL_SECONDS - 10
        assert cache.get("msg1") is None

    def test_put_with_metadata(self):
        cache = SentMessageCache()
        cache.put("msg1", "#test", "hello", metadata={"key": "val"})
        entry = cache.get("msg1")
        assert entry.metadata == {"key": "val"}


# ========================================================================
# formatter.py
# ========================================================================

class TestFormatOutbound:
    def test_basic(self):
        identity = ChannelIdentity(
            channel_id="irc_test",
            channel_type=ChannelType.IRC,
            channel_user_id="alice",
            channel_chat_id="#test",
        )
        response = ChannelResponse(identity=identity, content="hello world")
        result = format_outbound(response)
        assert result["target"] == "#test"
        assert result["text"] == "hello world"


class TestConvertMarkdownTables:
    def test_off_mode_passes_through(self):
        text = "| a | b |\n| - | - |\n| 1 | 2 |"
        result = convert_markdown_tables(text, table_mode="off")
        assert result == text

    def test_plain_mode_renders(self):
        text = "| Name | Age |\n|------|-----|\n| Alice| 30  |"
        result = convert_markdown_tables(text, table_mode="plain")
        assert "Name" in result
        assert "Age" in result

    def test_list_mode_renders(self):
        text = "| Name | Age |\n|------|-----|\n| Alice| 30  |"
        result = convert_markdown_tables(text, table_mode="list")
        assert "Name:" in result
        assert "Age:" in result

    def test_no_tables(self):
        result = convert_markdown_tables("plain text", table_mode="plain")
        assert result == "plain text"

    def test_text_with_table_and_plain(self):
        text = "Before\n| a | b |\n| - | - |\n| 1 | 2 |\nAfter"
        result = convert_markdown_tables(text, table_mode="plain")
        assert "Before" in result
        assert "After" in result

    def test_only_header_no_data(self):
        text = "Before\n| a | b |\nAfter"
        result = convert_markdown_tables(text, table_mode="plain")
        assert "a" in result


# ========================================================================
# nickserv.py
# ========================================================================

class TestNickservFunctions:
    def test_identify(self):
        result = nickserv_identify("mypass")
        assert result == "PRIVMSG NickServ :IDENTIFY mypass"

    def test_ghost(self):
        result = nickserv_ghost("mybot", "mypass")
        assert result == "PRIVMSG NickServ :GHOST mybot mypass"

    def test_recover(self):
        result = nickserv_recover("mybot", "mypass")
        assert result == "PRIVMSG NickServ :RECOVER mybot mypass"

    def test_release(self):
        result = nickserv_release("mybot", "mypass")
        assert result == "PRIVMSG NickServ :RELEASE mybot mypass"

    def test_info(self):
        result = nickserv_info("mybot")
        assert result == "PRIVMSG NickServ :INFO mybot"

    def test_status(self):
        result = nickserv_status("mybot")
        assert result == "PRIVMSG NickServ :STATUS mybot"


# ========================================================================
# media_vision.py
# ========================================================================

class TestExtractMediaUrls:
    def test_png(self):
        urls = extract_media_urls("check this https://example.com/img.png")
        assert len(urls) == 1
        assert urls[0] == "https://example.com/img.png"

    def test_multiple_formats(self):
        text = "https://a.com/1.jpg and https://b.com/2.gif"
        urls = extract_media_urls(text)
        assert len(urls) == 2

    def test_query_params(self):
        urls = extract_media_urls("https://example.com/img.png?w=100&h=200")
        assert len(urls) == 1

    def test_no_media_urls(self):
        urls = extract_media_urls("hello world")
        assert urls == []

    def test_webp_and_svg(self):
        urls = extract_media_urls("https://a.com/x.webp https://b.com/y.svg")
        assert len(urls) == 2

    def test_jpeg_extension(self):
        urls = extract_media_urls("https://example.com/photo.jpeg")
        assert len(urls) == 1

    def test_ignore_non_media(self):
        urls = extract_media_urls("https://example.com/page.html")
        assert urls == []


class TestHasMediaUrl:
    def test_true(self):
        assert has_media_url("look at https://example.com/img.png") is True

    def test_false(self):
        assert has_media_url("no media here") is False

    def test_false_for_html(self):
        assert has_media_url("https://example.com/page.html") is False


class TestAnalyzeUrls:
    def test_single_image(self):
        urls = analyze_urls("https://example.com/photo.png")
        assert len(urls) == 1
        assert urls[0]["type"] == "image"
        assert urls[0]["format"] == "png"
        assert urls[0]["size_bytes"] is None

    def test_extension_normalization(self):
        urls = analyze_urls("https://example.com/img.JPG?q=80")
        assert urls[0]["format"] == "jpg"


# ========================================================================
# protocol.py 补充
# ========================================================================

class TestParseIrcTagsDict:
    def test_with_tags(self):
        tags = parse_irc_tags_dict("@msgid=123;time=2024 PRIVMSG #chan :hi")
        assert tags == {"msgid": "123", "time": "2024"}

    def test_no_tags(self):
        tags = parse_irc_tags_dict("PRIVMSG #chan :hi")
        assert tags == {}


class TestExtractAccountFromTags:
    def test_account_present(self):
        assert extract_account_from_tags({"account": "alice"}) == "alice"

    def test_account_missing(self):
        assert extract_account_from_tags({"other": "val"}) is None

    def test_empty_dict(self):
        assert extract_account_from_tags({}) is None


class TestIsIdentified:
    def test_identified(self):
        assert is_identified({"account": "alice"}) is True

    def test_not_identified_star(self):
        assert is_identified({"account": "*"}) is False

    def test_not_identified_missing(self):
        assert is_identified({}) is False


# ========================================================================
# channel_runtime.py 补充
# ========================================================================

class TestMergeModes:
    def test_empty_current(self):
        assert _merge_modes("", "+im") == "+im"

    def test_empty_incoming(self):
        assert _merge_modes("+nt", "") == "+nt"

    def test_add_modes(self):
        result = _merge_modes("+nt", "+im")
        assert "i" in result
        assert "m" in result

    def test_remove_modes(self):
        result = _merge_modes("+nt", "-t")
        assert "t" not in result
        assert "n" in result

    def test_add_and_remove(self):
        result = _merge_modes("+nt", "+im-t")
        assert "i" in result
        assert "m" in result
        assert "t" not in result
        assert "n" in result


class TestChannelRuntimeExtended:
    def test_handle_quit_removes_from_all_channels(self):
        rt = ChannelRuntime()
        rt.add_channel("#a")
        rt.add_channel("#b")
        rt.handle_names("#a", "alice bob")
        rt.handle_names("#b", "alice charlie")
        rt.handle_quit("alice")
        assert "alice" not in rt.get_members("#a")
        assert "alice" not in rt.get_members("#b")
        assert "bob" in rt.get_members("#a")

    def test_handle_nick_change(self):
        rt = ChannelRuntime()
        rt.add_channel("#test")
        rt.handle_names("#test", "alice bob")
        rt.handle_nick_change("alice", "alice2")
        assert "alice" not in rt.get_members("#test")
        assert "alice2" in rt.get_members("#test")
        assert "bob" in rt.get_members("#test")

    def test_handle_mode(self):
        rt = ChannelRuntime()
        rt.add_channel("#test")
        rt.handle_mode("#test", "+im")
        assert "i" in rt.get_modes("#test")

    def test_topic(self):
        rt = ChannelRuntime()
        rt.set_topic("#test", "Welcome!")
        assert rt.get_topic("#test") == "Welcome!"

    def test_get_topic_nonexistent(self):
        rt = ChannelRuntime()
        assert rt.get_topic("#nonexistent") is None

    def test_mixed_prefix_names(self):
        rt = ChannelRuntime()
        rt.add_channel("#test")
        rt.handle_names("#test", "@op +voice ~owner normal")
        members = rt.get_members("#test")
        assert "op" in members
        assert "voice" in members
        assert "owner" in members
        assert "normal" in members

    def test_handle_names_empty_string(self):
        rt = ChannelRuntime()
        rt.add_channel("#test")
        rt.handle_names("#test", "")
        assert rt.get_members("#test") == set()

    def test_names_with_only_prefixes(self):
        rt = ChannelRuntime()
        rt.add_channel("#test")
        rt.handle_names("#test", "@ +")
        assert rt.get_members("#test") == set()


# ========================================================================
# splits.py 补充
# ========================================================================

class TestSplitMarkdown:
    def test_short_paragraph(self):
        chunks = split_markdown("hello", 500)
        assert chunks == ["hello"]

    def test_paragraphs_preserved(self):
        text = "para1\n\npara2"
        chunks = split_markdown(text, 500)
        assert len(chunks) == 2
        assert chunks[0] == "para1"
        assert chunks[1] == "para2"

    def test_long_word_splits(self):
        long_word = "A" * 200
        chunks = split_markdown(long_word, 50)
        for chunk in chunks:
            assert len(chunk.encode("utf-8")) <= 50

    def test_empty_text(self):
        assert split_markdown("", 500) == [""]

    def test_zero_limit(self):
        assert split_markdown("hello", 0) == ["hello"]


class TestSplitIrcTextExtended:
    def test_custom_max_chars(self):
        result = split_irc_text("A" * 500, max_chars=50)
        assert len(result) > 1

    def test_default_max_chars(self):
        short = "hello"
        result = split_irc_text(short)
        assert result == ["hello"]


# ========================================================================
# auth.py 补充
# ========================================================================

class TestResolvePassword:
    def test_direct_password(self):
        result = resolve_password(password="directpass")
        assert result == "directpass"

    def test_password_file(self, tmp_path):
        pw_file = tmp_path / "password.txt"
        pw_file.write_text("filepass")
        result = resolve_password(password_file=str(pw_file))
        assert result == "filepass"

    def test_password_file_priority(self, tmp_path):
        pw_file = tmp_path / "password.txt"
        pw_file.write_text("filepass")
        result = resolve_password(password="inline", password_file=str(pw_file))
        assert result == "filepass"

    def test_env_var(self, monkeypatch):
        monkeypatch.setenv("IRC_TEST_PASS", "envpass")
        result = resolve_password(env_var="IRC_TEST_PASS")
        assert result == "envpass"

    def test_env_var_fallback(self, monkeypatch):
        monkeypatch.setenv("IRC_TEST_PASS", "envpass")
        result = resolve_password(password="", password_file="", env_var="IRC_TEST_PASS")
        assert result == "envpass"

    def test_empty_result(self):
        result = resolve_password()
        assert result == ""

    def test_nonexistent_file(self):
        result = resolve_password(password_file="/nonexistent/path")
        assert result == ""


class TestGetServerPassword:
    def test_from_config(self):
        config = {"server_password": "spass"}
        assert get_server_password(config) == "spass"

    def test_from_file(self, tmp_path):
        pw_file = tmp_path / "server_pass.txt"
        pw_file.write_text("filepass")
        config = {"server_password_file": str(pw_file)}
        assert get_server_password(config) == "filepass"

    def test_from_env(self, monkeypatch):
        monkeypatch.setenv("IRC_SERVER_PASSWORD", "envpass")
        assert get_server_password({}) == "envpass"


# ========================================================================
# ctcp.py 补充
# ========================================================================

class TestHandleCtcp:
    @pytest.mark.asyncio
    async def test_ping_responds(self):
        send_fn = MagicMock()
        result = await handle_ctcp(send_fn, "alice", "\x01PING 12345\x01")
        assert result is False
        send_fn.assert_called_once()
        assert "PING" in send_fn.call_args[0][0]

    @pytest.mark.asyncio
    async def test_not_ctcp(self):
        send_fn = MagicMock()
        result = await handle_ctcp(send_fn, "alice", "plain text")
        assert result is False
        send_fn.assert_not_called()

    @pytest.mark.asyncio
    async def test_action_returns_true(self):
        send_fn = MagicMock()
        result = await handle_ctcp(send_fn, "alice", "\x01ACTION waves\x01")
        assert result is True

    @pytest.mark.asyncio
    async def test_version_responds(self):
        send_fn = MagicMock()
        await handle_ctcp(send_fn, "alice", "\x01VERSION\x01")
        assert any("ForcePilot" in c[0][0] for c in send_fn.call_args_list)

    @pytest.mark.asyncio
    async def test_time_responds(self):
        send_fn = MagicMock()
        await handle_ctcp(send_fn, "alice", "\x01TIME\x01")
        assert any("TIME " in c[0][0] for c in send_fn.call_args_list)


class TestExtractCtcpAction:
    def test_action_extracted(self):
        action = extract_ctcp_action("\x01ACTION waves hello\x01")
        assert action == "waves hello"

    def test_not_action(self):
        assert extract_ctcp_action("\x01PING 123\x01") is None

    def test_not_ctcp(self):
        assert extract_ctcp_action("plain text") is None


class TestSupportsCtcp:
    def test_returns_true(self):
        assert supports_ctcp() is True


# ========================================================================
# config_ui_hints.py
# ========================================================================

class TestGetConfigUiHints:
    def test_returns_dict_with_expected_keys(self):
        hints = get_config_ui_hints()
        assert isinstance(hints, dict)
        assert "server" in hints
        assert "nick" in hints
        assert "port" in hints
        assert "use_tls" in hints
        assert "dmPolicy" in hints

    def test_server_hints_structure(self):
        hints = get_config_ui_hints()
        server = hints["server"]
        assert server["type"] == "text"
        assert server["required"] is True
        assert server["placeholder"] == "irc.libera.chat"

    def test_password_fields_are_sensitive(self):
        hints = get_config_ui_hints()
        for key in ["nickserv.password", "password", "sasl.password"]:
            if key in hints:
                assert hints[key]["sensitive"] is True, f"{key} should be sensitive"

    def test_dm_policy_options(self):
        hints = get_config_ui_hints()
        dm = hints["dmPolicy"]
        assert dm["type"] == "select"
        options = [o["value"] for o in dm["options"]]
        assert "pairing" in options
        assert "open" in options
        assert "disabled" in options

    def test_chunker_mode_options(self):
        hints = get_config_ui_hints()
        chunker = hints["chunker_mode"]
        options = [o["value"] for o in chunker["options"]]
        assert "length" in options
        assert "markdown" in options


# ========================================================================
# 边界条件与异常处理综合测试
# ========================================================================

class TestEdgeCases:
    def test_parse_irc_tags_malformed(self):
        tags = parse_irc_tags("@msgid PING")
        assert tags == {"msgid": True}

    def test_parse_irc_tags_edge_at_only(self):
        tags = parse_irc_tags("@ PING")
        assert tags is not None

    def test_resolve_allowlist_match_partial_host(self):
        result = resolve_allowlist_match(["nick@host.com"], ["*@host*"])
        assert result == "*@host*"

    def test_build_allowlist_candidates_unicode(self):
        candidates = build_allowlist_candidates("昵称测试", "user", "host")
        assert "昵称测试" in candidates
        assert "昵称测试!user@host" in candidates

    def test_directory_empty_config(self):
        assert list_users({}) == []
        assert list_groups({}) == []

    def test_secret_contract_all_keys_unique(self):
        keys = [t.key for t in IRC_SECRET_TARGETS]
        assert len(keys) == len(set(keys))

    def test_known_servers_all_have_tls(self):
        for _name, details in KNOWN_IRC_SERVERS.items():
            assert details["tls"] is True, f"{_name} should have TLS enabled"

    def test_commands_parse_nested_args(self):
        cmd, args = parse_command("!cmd a b c d e")
        assert cmd == "cmd"
        assert len(args) == 5

    def test_send_cache_max_entries_custom(self):
        cache = SentMessageCache(max_entries=2)
        cache.put("a", "#t", "x")
        cache.put("b", "#t", "y")
        cache.put("c", "#t", "z")
        assert cache.size() == 2

    def test_convert_markdown_tables_no_separator_still_rendered(self):
        text = "| Name |\n| Alice |"
        result = convert_markdown_tables(text, table_mode="plain")
        assert "Name" in result