"""
Tests for services/matrix-bridge-dagi/app/control.py and M3.0 ingress control handling.

Covers:
  - parse_control_config: valid, invalid user_ids, invalid room_ids
  - ControlConfig.is_enabled: empty sets
  - is_control_message / is_control_room / is_operator
  - parse_command: valid, too long, too many tokens, no subcommand
  - ControlCommand.from_tokens: verb, subcommand, positional, kwargs
  - check_authorization: ok, not_operator, not_control_room
  - Reply helpers: not_implemented, unknown_command, unauthorized, help
  - Ingress _try_control: authorized command audited, unauthorized audited, non-cmd ignored
  - on_control_command callback fires
  - CONTROL_UNAUTHORIZED_BEHAVIOR=reply_error sends ⛔ message
"""

import asyncio
import sys
from pathlib import Path
from typing import Any, Dict, List
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

_BRIDGE = Path(__file__).parent.parent / "services" / "matrix-bridge-dagi"
if str(_BRIDGE) not in sys.path:
    sys.path.insert(0, str(_BRIDGE))

from app.control import (   # noqa: E402
    ControlConfig,
    ControlCommand,
    parse_control_config,
    parse_command,
    is_control_message,
    is_control_room,
    is_operator,
    check_authorization,
    not_implemented_reply,
    unknown_command_reply,
    unauthorized_reply,
    help_reply,
    VERB_RUNBOOK,
    VERB_HELP,
    KNOWN_VERBS,
)
from app.ingress import MatrixIngressLoop   # noqa: E402
from app.room_mapping import parse_room_map  # noqa: E402

# ── Constants ────────────────────────────────────────────────────────────────

CTRL_ROOM = "!opsroom:daarion.space"
CTRL_ROOM2 = "!opsroom2:daarion.space"
OP1 = "@ivan:daarion.space"
OP2 = "@sergiy:daarion.space"
NON_OP = "@stranger:matrix.org"
ALLOWED_AGENTS = frozenset({"sofiia"})


def run(coro):
    return asyncio.run(coro)


def _make_event(body: str, event_id: str = "e1", sender: str = OP1) -> Dict[str, Any]:
    return {
        "event_id": event_id,
        "sender": sender,
        "type": "m.room.message",
        "content": {"msgtype": "m.text", "body": body},
    }


def _make_ctrl_config(
    allowlist: str = f"{OP1},{OP2}",
    rooms: str = CTRL_ROOM,
) -> ControlConfig:
    return parse_control_config(allowlist, rooms)


def _make_ingress(ctrl_config=None) -> MatrixIngressLoop:
    room_map = parse_room_map("", ALLOWED_AGENTS)
    return MatrixIngressLoop(
        matrix_homeserver_url="https://matrix.test",
        matrix_access_token="tok",
        matrix_user_id="@bridge:test",
        router_url="http://router:8000",
        node_id="test",
        room_map=room_map,
        control_config=ctrl_config or _make_ctrl_config(),
        queue_max_events=10,
        worker_concurrency=1,
    )


# ── parse_control_config ─────────────────────────────────────────────────────

def test_parse_valid_allowlist_and_rooms():
    cfg = parse_control_config(f"{OP1},{OP2}", CTRL_ROOM)
    assert OP1 in cfg.operator_allowlist
    assert OP2 in cfg.operator_allowlist
    assert CTRL_ROOM in cfg.control_rooms


def test_parse_multiple_control_rooms():
    cfg = parse_control_config(OP1, f"{CTRL_ROOM},{CTRL_ROOM2}")
    assert len(cfg.control_rooms) == 2


def test_parse_empty_strings_return_empty_config():
    cfg = parse_control_config("", "")
    assert cfg.operator_allowlist == frozenset()
    assert cfg.control_rooms == frozenset()
    assert cfg.is_enabled is False


def test_parse_invalid_user_id_raises():
    with pytest.raises(ValueError, match="Invalid operator user_id"):
        parse_control_config("not-a-user-id", CTRL_ROOM)


def test_parse_invalid_room_id_raises():
    with pytest.raises(ValueError, match="Invalid control room_id"):
        parse_control_config(OP1, "not-a-room-id")


def test_parse_whitespace_stripped():
    cfg = parse_control_config(f" {OP1} , {OP2} ", f" {CTRL_ROOM} ")
    assert OP1 in cfg.operator_allowlist
    assert CTRL_ROOM in cfg.control_rooms


def test_is_enabled_false_when_no_operators():
    cfg = parse_control_config("", CTRL_ROOM)
    assert cfg.is_enabled is False


def test_is_enabled_false_when_no_rooms():
    cfg = parse_control_config(OP1, "")
    assert cfg.is_enabled is False


def test_is_enabled_true_when_both_set():
    cfg = _make_ctrl_config()
    assert cfg.is_enabled is True


# ── is_control_message ───────────────────────────────────────────────────────

def test_is_control_message_bang_prefix():
    assert is_control_message("!runbook start test.md") is True


def test_is_control_message_help():
    assert is_control_message("!help") is True


def test_is_control_message_no_bang():
    assert is_control_message("/sofiia hello") is False
    assert is_control_message("hello") is False


def test_is_control_message_empty():
    assert is_control_message("") is False


# ── is_operator / is_control_room ────────────────────────────────────────────

def test_is_operator_true():
    cfg = _make_ctrl_config()
    assert is_operator(OP1, cfg) is True


def test_is_operator_false():
    cfg = _make_ctrl_config()
    assert is_operator(NON_OP, cfg) is False


def test_is_control_room_true():
    cfg = _make_ctrl_config()
    assert is_control_room(CTRL_ROOM, cfg) is True


def test_is_control_room_false():
    cfg = _make_ctrl_config()
    assert is_control_room("!other:server", cfg) is False


# ── parse_command ─────────────────────────────────────────────────────────────

def test_parse_runbook_start():
    cmd = parse_command("!runbook start path/to/runbook.md node=NODA1")
    assert cmd is not None
    assert cmd.verb == VERB_RUNBOOK
    assert cmd.subcommand == "start"
    assert "path/to/runbook.md" in cmd.args
    assert cmd.kwargs.get("node") == "NODA1"
    assert cmd.is_known is True


def test_parse_runbook_next():
    cmd = parse_command("!runbook next run-abc123")
    assert cmd is not None
    assert cmd.subcommand == "next"
    assert "run-abc123" in cmd.args


def test_parse_help():
    cmd = parse_command("!help")
    assert cmd is not None
    assert cmd.verb == VERB_HELP
    assert cmd.subcommand == ""
    assert cmd.is_known is True


def test_parse_unknown_verb():
    cmd = parse_command("!frobnicate do-something")
    assert cmd is not None
    assert cmd.is_known is False


def test_parse_too_long_returns_none():
    long_msg = "!" + "x" * 600
    assert parse_command(long_msg) is None


def test_parse_non_command_returns_none():
    assert parse_command("regular text") is None
    assert parse_command("/slash command") is None


def test_parse_only_bang_returns_none():
    assert parse_command("!") is None
    assert parse_command("! ") is None


def test_parse_kwargs_extracted():
    cmd = parse_command("!runbook complete run-1 step=3 status=ok notes=done")
    assert cmd is not None
    assert cmd.kwargs["step"] == "3"
    assert cmd.kwargs["status"] == "ok"
    assert cmd.kwargs["notes"] == "done"


# ── check_authorization ───────────────────────────────────────────────────────

def test_check_authorization_ok():
    cfg = _make_ctrl_config()
    auth, reason = check_authorization(OP1, CTRL_ROOM, cfg)
    assert auth is True
    assert reason == "ok"


def test_check_authorization_not_operator():
    cfg = _make_ctrl_config()
    auth, reason = check_authorization(NON_OP, CTRL_ROOM, cfg)
    assert auth is False
    assert reason == "not_operator"


def test_check_authorization_not_control_room():
    cfg = _make_ctrl_config()
    auth, reason = check_authorization(OP1, "!wrong:server", cfg)
    assert auth is False
    assert reason == "not_control_room"


# ── Reply helpers ─────────────────────────────────────────────────────────────

def test_not_implemented_reply_contains_verb():
    cmd = parse_command("!runbook start test.md")
    reply = not_implemented_reply(cmd)
    assert "runbook" in reply
    assert "M3.1" in reply


def test_unknown_command_reply_contains_known_verbs():
    cmd = parse_command("!frobnicate")
    reply = unknown_command_reply(cmd)
    assert "runbook" in reply or "status" in reply or "help" in reply


def test_unauthorized_reply_not_operator():
    assert "operator allowlist" in unauthorized_reply("not_operator")


def test_help_reply_lists_commands():
    reply = help_reply()
    assert "!runbook" in reply
    assert "!status" in reply
    assert "!help" in reply


# ── Ingress _try_control integration ─────────────────────────────────────────

def test_authorized_command_audited():
    """Authorised !runbook start → audit matrix.control.command written."""
    ingress = _make_ingress()
    audit_events: List[str] = []

    async def fake_audit(*args, **kwargs):
        audit_events.append(kwargs.get("event", ""))

    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock()

    event = _make_event("!runbook start test.md node=NODA1", event_id="ctrl1", sender=OP1)

    async def _run():
        with patch("app.ingress._write_audit", side_effect=fake_audit):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert "matrix.control.command" in audit_events
    fake_client.send_text.assert_called_once()
    # Reply should mention pending implementation
    sent_text = fake_client.send_text.call_args[0][1]
    assert "runbook" in sent_text.lower()


def test_unauthorized_command_audited_silent_by_default():
    """Non-operator !command → audit unauthorized, no reply (default ignore)."""
    ingress = _make_ingress()
    audit_events: List[str] = []

    async def fake_audit(*args, **kwargs):
        audit_events.append(kwargs.get("event", ""))

    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock()

    event = _make_event("!runbook start test.md", event_id="ctrl2", sender=NON_OP)

    async def _run():
        with patch("app.ingress._write_audit", side_effect=fake_audit):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert "matrix.control.unauthorized" in audit_events
    fake_client.send_text.assert_not_called()   # silent


def test_unauthorized_reply_error_sends_message():
    """CONTROL_UNAUTHORIZED_BEHAVIOR=reply_error → ⛔ message sent."""
    ingress = _make_ingress()
    ingress._control_unauthorized_behavior = "reply_error"

    sent_texts: List[str] = []
    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock(
        side_effect=lambda room, text, txn_id=None: sent_texts.append(text)
    )

    event = _make_event("!runbook start test.md", event_id="ctrl3", sender=NON_OP)

    async def _run():
        with patch("app.ingress._write_audit", new=AsyncMock()):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert len(sent_texts) == 1
    assert "Not authorised" in sent_texts[0] or "⛔" in sent_texts[0]


def test_non_command_message_ignored():
    """Regular text in control room (no '!') → silently ignored."""
    ingress = _make_ingress()
    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock()

    event = _make_event("just chatting in ops room", event_id="ctrl4", sender=OP1)

    async def _run():
        with patch("app.ingress._write_audit", new=AsyncMock()):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    fake_client.mark_seen.assert_not_called()
    fake_client.send_text.assert_not_called()


def test_on_control_command_callback_fires():
    """on_control_command callback receives (sender, verb, subcommand)."""
    ingress = _make_ingress()
    ctrl_calls: List[tuple] = []
    ingress._on_control_command = lambda s, v, sc: ctrl_calls.append((s, v, sc))

    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock()

    event = _make_event("!runbook next run-abc123", event_id="ctrl5", sender=OP1)

    async def _run():
        with patch("app.ingress._write_audit", new=AsyncMock()):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert len(ctrl_calls) == 1
    sender, verb, subcommand = ctrl_calls[0]
    assert sender == OP1
    assert verb == "runbook"
    assert subcommand == "next"


def test_help_command_returns_help_text():
    """!help → help_reply() sent."""
    ingress = _make_ingress()
    sent_texts: List[str] = []

    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock(
        side_effect=lambda room, text, txn_id=None: sent_texts.append(text)
    )

    event = _make_event("!help", event_id="ctrl6", sender=OP2)

    async def _run():
        with patch("app.ingress._write_audit", new=AsyncMock()):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert len(sent_texts) == 1
    assert "!runbook" in sent_texts[0]


def test_unknown_command_verb_audited_and_replied():
    """Unknown verb → matrix.control.unknown_cmd audited + reply."""
    ingress = _make_ingress()
    audit_events: List[str] = []

    async def fake_audit(*args, **kwargs):
        audit_events.append(kwargs.get("event", ""))

    sent_texts: List[str] = []
    fake_client = MagicMock()
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock(
        side_effect=lambda room, text, txn_id=None: sent_texts.append(text)
    )

    event = _make_event("!frobnicate do-stuff", event_id="ctrl7", sender=OP1)

    async def _run():
        with patch("app.ingress._write_audit", side_effect=fake_audit):
            await ingress._try_control(fake_client, AsyncMock(), event, CTRL_ROOM)

    run(_run())

    assert "matrix.control.unknown_cmd" in audit_events
    assert len(sent_texts) == 1
    assert "Unknown command" in sent_texts[0] or "unknown" in sent_texts[0].lower()


def test_control_room_events_not_forwarded_to_agents():
    """Messages from control room must NOT be enqueued as agent messages."""
    ingress = _make_ingress()
    queue: asyncio.Queue = asyncio.Queue(maxsize=10)
    ingress._queue = queue

    def extract(sync_resp, room_id):
        if room_id == CTRL_ROOM:
            return [_make_event("!runbook start test.md", event_id="fwd1", sender=OP1)]
        return []

    fake_client = MagicMock()
    fake_client.extract_room_messages.side_effect = extract
    fake_client.mark_seen = MagicMock()
    fake_client.send_text = AsyncMock()

    async def _run():
        with patch("app.ingress._write_audit", new=AsyncMock()):
            await ingress._enqueue_from_sync(fake_client, queue, AsyncMock(), {})

    run(_run())

    assert queue.qsize() == 0   # control commands never enqueued as agent work