STT-Assistant/tests/test_tui_app.py

"""Smoke test: the Textual app mounts, subscribes, and ingests broadcasts."""

import asyncio
import os
import shutil
import sys
import tempfile

import pytest

from stt_daemon.assistant.control import ControlServer
from stt_daemon.assistant.service import AssistantService
from stt_daemon.config import Config


class FakeSubscriber:
    def events(self):
        return iter(())

    def close(self):
        pass


@pytest.fixture
def server():
    directory = tempfile.mkdtemp(prefix="stta-")
    path = os.path.join(directory, "c.sock")
    cfg = Config()
    cfg.assistant.control_socket = path

    service = AssistantService(cfg, FakeSubscriber())
    control = ControlServer(cfg, service, path=path)
    service.set_sinks(emit=control.broadcast, relay=control.relay)
    control.start()

    yield path, service

    control.close()
    service.stop()
    shutil.rmtree(directory, ignore_errors=True)


def test_ctrl_r_sends_execute_and_e_focuses_command(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))

            await pilot.press("ctrl+r")
            await pilot.pause()
            await pilot.press("a")
            await pilot.pause()
            await pilot.press("escape")
            await pilot.pause()

            await pilot.press("e")
            await pilot.pause()
            cmd = app.query_one("#command", Input)
            observed["cmd_focused"] = cmd.has_focus

    asyncio.run(scenario())
    assert ("command_execute", {}) in sent
    assert ("command_start", {}) in sent
    assert ("command_cancel", {}) in sent
    assert observed["cmd_focused"] is True


def test_type_command_enter_from_idle_sends_start_edit_execute(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))
            assert app.state.mode == "idle"
            app.query_one("#command", Input).focus()
            await pilot.pause()
            for ch in "take notes":
                await pilot.press(ch)
            await pilot.pause()
            await pilot.press("enter")
            await pilot.pause()

    asyncio.run(scenario())
    assert [t for t, _ in sent] == ["command_start", "command_edit", "command_execute"], sent
    assert sent[1][1] == {"text": "take notes"}, sent


def test_type_command_enter_when_armed_skips_start(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest({"type": "mode", "mode": "command_armed"})
            assert app.state.mode == "command_armed"
            app.query_one("#command", Input).focus()
            await pilot.pause()
            for ch in "open calendar":
                await pilot.press(ch)
            await pilot.pause()
            await pilot.press("enter")
            await pilot.pause()

    asyncio.run(scenario())
    assert [t for t, _ in sent] == ["command_edit", "command_execute"], sent
    assert sent[0][1] == {"text": "open calendar"}, sent


def test_empty_command_enter_sends_nothing(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))
            app.query_one("#command", Input).focus()
            await pilot.pause()
            await pilot.press("enter")
            await pilot.pause()

    asyncio.run(scenario())
    assert sent == []


def test_e_focuses_command_input(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest({"type": "command_text", "text": "voice text", "edited": False})
            app._render()
            await pilot.pause()
            await pilot.press("e")
            await pilot.pause()
            cmd = app.query_one("#command", Input)
            observed["focused"] = cmd.has_focus
            observed["value"] = cmd.value

    asyncio.run(scenario())
    assert observed["focused"] is True
    assert observed["value"] == "voice text"


def test_voice_text_updates_unfocused_but_not_focused(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            cmd = app.query_one("#command", Input)
            assert not cmd.has_focus
            app.state.ingest({"type": "command_text", "text": "voice built", "edited": False})
            app._render()
            await pilot.pause()
            observed["unfocused_value"] = app.query_one("#command", Input).value

            app.query_one("#command", Input).focus()
            await pilot.pause()
            for ch in "user typing":
                await pilot.press(ch)
            await pilot.pause()
            app.state.ingest({"type": "command_text", "text": "voice late", "edited": False})
            app._render()
            await pilot.pause()
            observed["focused_value"] = app.query_one("#command", Input).value

    asyncio.run(scenario())
    assert observed["unfocused_value"] == "voice built"
    assert observed["focused_value"] == "user typing"


def test_command_input_border_title(server):
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._render()
            await pilot.pause()
            return app.query_one("#command", Input).border_title

    title = asyncio.run(scenario())
    assert "command buffer" in title


def test_no_autofocus_on_mount(server):
    """Nothing is focused on mount: single-letter hotkeys must not be swallowed by #command."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            await pilot.pause()
            return app.focused

    assert asyncio.run(scenario()) is None


def test_submit_blurs_command_and_hotkey_still_fires(server):
    """Type + Enter sends messages, clears focus; a hotkey (t) still fires afterwards."""
    pytest.importorskip("textual")
    from textual.widgets import Input

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.query_one("#command", Input).focus()
            await pilot.pause()
            for ch in "take notes":
                await pilot.press(ch)
            await pilot.pause()
            await pilot.press("enter")
            await pilot.pause()
            observed["focused_after_submit"] = app.focused
            observed["value_after_submit"] = app.query_one("#command", Input).value
            await pilot.press("t")
            await pilot.pause()

    asyncio.run(scenario())
    assert [t for t, _ in sent] == [
        "command_start",
        "command_edit",
        "command_execute",
        "chat_toggle",
    ], sent
    assert observed["focused_after_submit"] is None
    assert observed["value_after_submit"] == ""


def test_focus_triage_then_m_maximizes_deterministically(server):
    """Focus #triage, assert focus stuck, then m maximizes #main (no auto-focus race)."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            assert app.focused is not None and app.focused.id == "triage", app.focused
            await pilot.press("m")
            await pilot.pause()
            observed["maximized_is_main"] = app.screen.maximized is app.query_one("#main")

    asyncio.run(scenario())
    assert observed["maximized_is_main"] is True


def test_c_key_confirms_before_clearing(server):
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))

            await pilot.press("c")
            await pilot.pause()
            assert not any(type_ == "clear" for type_, _ in sent), "clear sent before confirmation"

            await pilot.press("y")
            await pilot.pause()

    asyncio.run(scenario())
    assert ("clear", {}) in sent


def test_c_key_cancel_does_not_clear(server):
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))

            await pilot.press("c")
            await pilot.pause()
            await pilot.press("n")
            await pilot.pause()

    asyncio.run(scenario())
    assert not any(type_ == "clear" for type_, _ in sent)


def test_c_key_escape_does_not_clear(server):
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    sent: list[tuple] = []

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.client.send = lambda type_, **fields: sent.append((type_, fields))

            await pilot.press("c")
            await pilot.pause()
            await pilot.press("escape")
            await pilot.pause()

    asyncio.run(scenario())
    assert not any(type_ == "clear" for type_, _ in sent)


def test_c_key_clears_rendered_output(server):
    """Pressing 'c' clears the conversation pane via the cleared event."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.state.ingest({"type": "chat_message", "role": "user", "text": "hello"})
            app.state.ingest(
                {
                    "type": "tool_result",
                    "tool": "get_datetime",
                    "ok": True,
                    "result": "2026-09-21",
                }
            )
            app._render()
            await pilot.pause()

            app.state.ingest({"type": "cleared"})
            app._render()
            await pilot.pause()

            log = app.query_one("#chat", RichLog)
            return list(log.lines)

    lines = asyncio.run(scenario())
    assert not any("hello" in str(line) for line in lines)
    assert not any("2026-09-21" in str(line) for line in lines)


def test_tui_renders_command_output(server):
    """A tool result must actually reach a widget - otherwise 'nothing happens'."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.state.ingest(
                {
                    "type": "tool_result",
                    "tool": "get_datetime",
                    "ok": True,
                    "result": "2026-09-21T01:00:00",
                }
            )
            app._render()
            await pilot.pause()
            log = app.query_one("#chat", RichLog)
            return list(log.lines)

    lines = asyncio.run(scenario())
    assert lines, "command output was not rendered anywhere"


def test_tui_clears_chat_pane_on_chat_exit(server):
    """Leaving chat must drop the rendered conversation but keep command output."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.state.ingest(
                {"type": "tool_result", "tool": "get_datetime", "ok": True, "result": "kept"}
            )
            app.state.ingest({"type": "mode", "mode": "chat"})
            app.state.ingest({"type": "chat_message", "role": "user", "text": "gone"})
            app._render()
            await pilot.pause()

            app.state.ingest({"type": "mode", "mode": "idle"})
            app._render()
            await pilot.pause()
            return [str(line) for line in app.query_one("#chat", RichLog).lines]

    lines = asyncio.run(scenario())
    assert not any("gone" in line for line in lines)
    assert any("kept" in line for line in lines)


def test_tui_mounts_subscribes_and_ingests_broadcasts(server):
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            service.arm()  # broadcast to the subscribed viewer
            for _ in range(60):
                await pilot.pause()
                if app.state.mode == "command_armed":
                    break
                await asyncio.sleep(0.05)

    asyncio.run(scenario())
    assert app.state.mode == "command_armed"


def test_render_after_unmount_is_safe(server):
    """A timer tick can land during teardown; rendering must not raise."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()

    asyncio.run(scenario())
    app._render()  # must not raise NoMatches


def test_tui_records_connect_failure(tmp_path):
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    app = AssistantTUI(str(tmp_path / "missing.sock"))

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()

    asyncio.run(scenario())
    assert app.connect_error is not None
    assert "cannot connect" in app.connect_error


def test_border_titles_show_queue_and_inference_depths(server):
    """Border titles for transcript and chat show live segment and inference queue counts."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.state.ingest(
                {
                    "type": "heartbeat",
                    "queue_depth": 5,
                    "inference_depth": 3,
                    "inference_in_flight": False,
                }
            )
            app._render()
            await pilot.pause()

            transcript_title = app.query_one("#transcript", RichLog).border_title
            chat_title = app.query_one("#chat", RichLog).border_title

            assert "[seg 5]" in transcript_title
            assert "[inf 3]" in chat_title
            assert "busy" not in chat_title

            # Test with inference in flight
            app.state.ingest(
                {
                    "type": "heartbeat",
                    "inference_depth": 7,
                    "inference_in_flight": True,
                }
            )
            app._render()
            await pilot.pause()

            chat_title = app.query_one("#chat", RichLog).border_title
            assert "[inf 7" in chat_title
            assert "busy" in chat_title

    asyncio.run(scenario())


def test_main_exit_code_reflects_connect_failure(monkeypatch, tmp_path, capsys):
    pytest.importorskip("textual")
    from stt_daemon.tui import app as tui_app

    monkeypatch.setattr(
        tui_app.AssistantTUI,
        "run",
        lambda self: setattr(self, "connect_error", "boom"),
    )
    monkeypatch.setattr(sys, "argv", ["stt-tui", "--socket", str(tmp_path / "x.sock")])
    assert tui_app.main() == 1
    assert "boom" in capsys.readouterr().err

    monkeypatch.setattr(tui_app.AssistantTUI, "run", lambda self: None)
    assert tui_app.main() == 0


def test_triage_disabled_composes_no_triage_widget(server):
    """Default (triage_enabled=False): no #triage, no #main — tree as today."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            assert not app.query("#triage")
            assert not app.query("#main")
            # The rest of the tree is intact.
            app.query_one("#transcript")
            app.query_one("#status")
            app.query_one("#command")
            app.query_one("#chat")

    asyncio.run(scenario())


def test_triage_enabled_composes_split(server):
    """triage_enabled=True: #main wraps #triage (left) + #chat (right); transcript stays outside."""
    pytest.importorskip("textual")
    from textual.containers import Horizontal
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            main = app.query_one("#main", Horizontal)
            transcript = app.query_one("#transcript", RichLog)
            triage = app.query_one("#triage", RichLog)
            chat = app.query_one("#chat", RichLog)
            assert triage.parent is main
            assert chat.parent is main
            assert transcript.parent is not main
            assert triage.border_title == "triage"
            # triage sits LEFT of chat inside #main.
            assert main.children.index(triage) < main.children.index(chat)
            # Outside widgets stay outside #main.
            assert app.query_one("#status").parent is not main
            assert transcript.parent is not main

    asyncio.run(scenario())


def test_triage_enabled_layout_proportions(server):
    """Rendered proportions: #triage ~1/3 and #chat ~2/3 of #main; #transcript ~25% of screen."""
    pytest.importorskip("textual")
    from textual.containers import Horizontal
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario(size=None):
        kwargs = {"size": size} if size else {}
        async with app.run_test(**kwargs) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            # Chat needs content to be shown (hidden-by-default rule): put it in
            # chat mode so the 1/3-2/3 split applies.
            app.state.ingest({"type": "mode", "mode": "chat"})
            app._render()
            await pilot.pause()
            main = app.query_one("#main", Horizontal)
            transcript = app.query_one("#transcript", RichLog)
            triage = app.query_one("#triage", RichLog)
            chat = app.query_one("#chat", RichLog)
            return (
                main.size.width,
                triage.size.width,
                chat.size.width,
                app.screen.size.height,
                transcript.region.height,
            )

    main_w, triage_w, chat_w, screen_h, transcript_h = asyncio.run(scenario())
    print(
        f"measured: main_w={main_w} triage_w={triage_w} chat_w={chat_w} "
        f"screen_h={screen_h} transcript_h={transcript_h}"
    )
    # Content boxes exclude the 1-cell border on each side; allow ±2 px for
    # borders/rounding on the fractional split.
    assert abs(triage_w / main_w - 1 / 3) < 0.05, (main_w, triage_w, chat_w)
    assert abs(chat_w / main_w - 2 / 3) < 0.05, (main_w, triage_w, chat_w)
    # region.height includes the transcript's 2 border rows; at the small
    # default size rounding is coarse, so only demand a floor here. The
    # precise 25% check runs at a taller size below.
    assert transcript_h / screen_h >= 0.18, (screen_h, transcript_h)
    assert transcript_h >= 1, transcript_h

    app2 = AssistantTUI(path, triage_enabled=True)

    async def scenario_tall():
        async with app2.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            transcript2 = app2.query_one("#transcript", RichLog)
            return app2.screen.size.height, transcript2.region.height

    screen_h2, transcript_h2 = asyncio.run(scenario_tall())
    print(f"measured tall: screen_h={screen_h2} transcript_h={transcript_h2}")
    assert abs(transcript_h2 / screen_h2 - 0.25) < 0.06, (screen_h2, transcript_h2)


def test_triage_enabled_renders_signals_on_epoch_change(server):
    """A triage event + status event must actually write rendered lines into #triage."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "triage",
                    "stage": "signals",
                    "triage": {
                        "order": ["category"],
                        "items": {
                            "category": {
                                "kind": "choice",
                                "choice": "question",
                                "answer_confidence": 0.91,
                            }
                        },
                    },
                }
            )
            app.state.ingest(
                {"type": "status", "triage_state": "ok", "triage_reason": ""}
            )
            app._render()
            await pilot.pause()
            return [str(line) for line in app.query_one("#triage", RichLog).lines]

    lines = asyncio.run(scenario())
    rendered = "\n".join(lines)
    assert "category: question (0.91)" in rendered


def test_triage_enabled_loading_shows_reason_line_never_blank(server):
    """loading/unknown triage_state renders the reason line — never a blank panel."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "status",
                    "triage_state": "loading",
                    "triage_reason": "model loading",
                }
            )
            app._render()
            await pilot.pause()
            loading_lines = [str(line) for line in app.query_one("#triage", RichLog).lines]

            # Unknown state falls back to a generic reason line, no crash.
            app.state.ingest(
                {"type": "status", "triage_state": "weird_state", "triage_reason": ""}
            )
            app._render()
            await pilot.pause()
            unknown_lines = [str(line) for line in app.query_one("#triage", RichLog).lines]
            return loading_lines, unknown_lines

    loading_lines, unknown_lines = asyncio.run(scenario())
    assert loading_lines, "triage panel was blank in loading state"
    assert any("triage: unavailable" in line for line in loading_lines)
    assert any("model loading" in line for line in loading_lines)
    assert unknown_lines, "triage panel was blank for unknown state"
    assert any("triage: unavailable" in line for line in unknown_lines)
    assert any("weird_state" in line for line in unknown_lines)


def test_triage_epoch_change_clears_before_rewrite(server):
    """Epoch bump clears #triage first: no duplicated stale lines."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "triage",
                    "stage": "signals",
                    "triage": {"order": ["q1"], "items": {"q1": {"kind": "choice", "choice": "a"}}},
                }
            )
            app.state.ingest({"type": "status", "triage_state": "ok"})
            app._render()
            await pilot.pause()

            # New epoch: cleared stage empties the payload, panel must not keep old lines.
            app.state.ingest({"type": "triage", "stage": "cleared"})
            app._render()
            await pilot.pause()
            return [str(line) for line in app.query_one("#triage", RichLog).lines]

    lines = asyncio.run(scenario())
    rendered = "\n".join(lines)
    assert "q1" not in rendered, "stale triage lines survived an epoch change"
    assert "triage: unavailable — no data" in rendered


def test_triage_disabled_never_writes_triage(server):
    """Disabled: triage events are ingested but #triage is never touched (it doesn't exist)."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.state.ingest({"type": "triage", "stage": "signals", "triage": {}})
            app.state.ingest({"type": "status", "triage_state": "ok"})
            app._render()  # must not raise NoMatches for #triage
            await pilot.pause()
            assert not app.query("#triage")

    asyncio.run(scenario())


def test_default_ctor_has_no_triage_arg(server):
    """AssistantTUI(path) stays valid: triage_enabled defaults to False."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    assert app.triage_enabled is False
    assert app._seen_triage_epoch == 0


def test_maximize_triage_hides_chat_and_fills_screen(server):
    """Focus #triage, press m: #main maximized, chat hidden, triage fills screen."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            assert app.focused is not None and app.focused.id == "triage", app.focused
            await pilot.press("m")
            await pilot.pause()
            observed["maximized_is_main"] = app.screen.maximized is app.query_one("#main")
            observed["triage_display"] = app.query_one("#triage", RichLog).display
            observed["chat_display"] = app.query_one("#chat", RichLog).display
            observed["region"] = app.query_one("#triage", RichLog).region
            observed["screen_size"] = app.screen.size

    asyncio.run(scenario())
    print("triage maximized: region=%s screen=%s" % (observed["region"], observed["screen_size"]))
    assert observed["maximized_is_main"] is True
    assert observed["triage_display"] is True
    assert observed["chat_display"] is False
    region = observed["region"]
    size = observed["screen_size"]
    assert abs(region.width - size.width) <= 2, (region, size)
    assert abs(region.height - size.height) <= 2, (region, size)


def test_maximize_toggle_restores_layout(server):
    """Press m again: minimize restores panes; chat follows the content rule (hidden)."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            observed["maximized"] = app.screen.maximized
            observed["triage_display"] = app.query_one("#triage", RichLog).display
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["maximized"] is None
    assert observed["triage_display"] is True
    # No chat/command output ingested: chat follows the content rule → hidden.
    assert observed["chat_display"] is False


def test_maximize_transcript_fills_screen(server):
    """Focus #transcript, press m: transcript maximized and fills the screen."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#transcript", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            observed["maximized_is_transcript"] = (
                app.screen.maximized is app.query_one("#transcript")
            )
            observed["region"] = app.query_one("#transcript", RichLog).region
            observed["screen_size"] = app.screen.size
            await pilot.press("m")
            await pilot.pause()
            observed["restored"] = app.screen.maximized

    asyncio.run(scenario())
    print("transcript maximized: region=%s screen=%s"
          % (observed["region"], observed["screen_size"]))
    assert observed["maximized_is_transcript"] is True
    region = observed["region"]
    size = observed["screen_size"]
    assert abs(region.width - size.width) <= 2, (region, size)
    assert abs(region.height - size.height) <= 2, (region, size)
    assert observed["restored"] is None


def test_escape_while_maximized_restores_panes(server):
    """Escape minimizes (ESCAPE_TO_MINIMIZE) and _drain restores the hidden sibling."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            assert app.screen.maximized is not None
            await pilot.press("escape")
            await pilot.pause()
            # Let the 0.1s _drain timer run so the restore path executes.
            for _ in range(10):
                await pilot.pause()
                await asyncio.sleep(0.05)
                if app.screen.maximized is None:
                    break
            observed["maximized"] = app.screen.maximized
            observed["triage_display"] = app.query_one("#triage", RichLog).display
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["maximized"] is None
    assert observed["triage_display"] is True
    # No chat/command output ingested: chat follows the content rule → hidden.
    assert observed["chat_display"] is False


def test_maximize_chat_when_triage_disabled(server):
    """triage_enabled=False: focus #chat, press m maximizes #main without crashing."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            # Disabled: no #main/#triage; focusing #chat then m maximizes #chat itself.
            app.query_one("#chat", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            observed["maximized"] = app.screen.maximized
            observed["chat"] = app.query_one("#chat", RichLog)
            observed["region"] = app.query_one("#chat", RichLog).region
            observed["screen_size"] = app.screen.size
            await pilot.press("m")
            await pilot.pause()
            observed["restored"] = app.screen.maximized

    asyncio.run(scenario())
    print("chat maximized (disabled): region=%s screen=%s"
          % (observed["region"], observed["screen_size"]))
    assert observed["maximized"] is observed["chat"]
    assert observed["restored"] is None


def test_footer_hidden_while_maximized(server):
    """ALLOW_IN_MAXIMIZED_VIEW hides the Footer while a pane is maximized."""
    pytest.importorskip("textual")
    from textual.widgets import Footer, RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            observed["maximized"] = app.screen.maximized
            observed["footer_region"] = app.query_one(Footer).region
            await pilot.press("m")
            await pilot.pause()

    asyncio.run(scenario())
    assert observed["maximized"] is not None
    footer_region = observed["footer_region"]
    assert footer_region.height == 0 or footer_region.width == 0, observed


def test_question_mark_key_toggles_help_panel(server):
    pytest.importorskip("textual")
    from textual.widgets import HelpPanel

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            assert list(app.screen.query(HelpPanel)) == []
            await pilot.press("question_mark")
            await pilot.pause()
            observed["shown"] = list(app.screen.query(HelpPanel)) != []
            app.screen.query_one(HelpPanel)  # must succeed while shown
            await pilot.press("question_mark")
            await pilot.pause()
            observed["hidden"] = list(app.screen.query(HelpPanel)) == []

    asyncio.run(scenario())
    assert observed["shown"] is True, "? did not mount HelpPanel"
    assert observed["hidden"] is True, "second ? did not remove HelpPanel"


def test_app_bindings_list():
    """BINDINGS: 8 visible footer entries; hidden ones after; no h binding."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    pairs = [(b.key, b.description) for b in AssistantTUI.BINDINGS]
    assert ("ctrl+r", "execute") in pairs
    assert ("m", "maximize pane") in pairs
    assert ("question_mark", "help") in pairs
    assert ("ctrl+s", "save screenshot") in pairs
    assert ("a", "arm command") in pairs
    assert ("escape", "cancel") in pairs
    assert ("e", "edit command") in pairs
    assert ("t", "chat toggle") in pairs
    assert ("s", "questions view") in pairs
    assert ("c", "clear") in pairs
    assert ("q", "quit") in pairs
    assert ("ctrl+p", "instructions") in pairs
    assert not any(key == "h" for key, _ in pairs)
    assert not any(key == "ctrl+m" for key, _ in pairs)
    assert not any(key == "ctrl+h" for key, _ in pairs)
    assert not any(key == "enter" for key, _ in pairs)
    assert not any(key == "ctrl+k" for key, _ in pairs)
    by_key = {b.key: b for b in AssistantTUI.BINDINGS}
    assert by_key["question_mark"].show is True
    assert by_key["s"].show is True
    assert by_key["m"].show is False
    assert by_key["c"].show is False
    assert by_key["ctrl+s"].show is False
    assert by_key["ctrl+p"].show is False
    # Visible eight first, in footer order.
    visible = [(b.key, b.description) for b in AssistantTUI.BINDINGS if b.show]
    assert visible == [
        ("a", "arm command"),
        ("ctrl+r", "execute"),
        ("escape", "cancel"),
        ("e", "edit command"),
        ("t", "chat toggle"),
        ("s", "questions view"),
        ("question_mark", "help"),
        ("q", "quit"),
    ]
    assert by_key["ctrl+p"].priority is True


def test_footer_shows_ordered_entries(server):
    """Left list is the 8 visible bindings (? for help); instructions only right-aligned."""
    pytest.importorskip("textual")
    from textual.widgets import Footer
    from textual.widgets._footer import FooterKey

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            shown = [
                (b.binding.key, b.binding.description)
                for b in app.screen.active_bindings.values()
                if b.binding.show
            ]
            observed["shown"] = shown
            footer = app.query_one(Footer)
            keys = list(footer.query(FooterKey))
            observed["keys"] = [
                (k.key, k.key_display, k.description, k.action, set(k.classes))
                for k in keys
            ]

    asyncio.run(scenario())
    expected = [
        ("a", "arm command"),
        ("ctrl+r", "execute"),
        ("escape", "cancel"),
        ("e", "edit command"),
        ("t", "chat toggle"),
        ("s", "questions view"),
        ("question_mark", "help"),
        ("q", "quit"),
    ]
    assert observed["shown"] == expected, observed["shown"]
    # Help advertises as "?" in the footer.
    assert app.get_key_display(
        next(b for b in AssistantTUI.BINDINGS if b.key == "question_mark")
    ) == "?"
    # The composed Footer: exactly one "instructions" entry and it is the
    # right-aligned command-palette key; no left duplicate exists.
    instructions = [k for k in observed["keys"] if k[2] == "instructions"]
    assert len(instructions) == 1, observed["keys"]
    key, key_display, _desc, action, classes = instructions[0]
    assert action == "command_palette", instructions
    assert "-command-palette" in classes, instructions
    assert key == "ctrl+p", instructions
    non_palette = [k for k in observed["keys"] if "-command-palette" not in k[4]]
    assert not any(k[2] == "instructions" for k in non_palette), observed["keys"]
    assert not any(k[3] == "command_palette" for k in non_palette), observed["keys"]


def test_ctrl_p_opens_command_palette(server):
    """ctrl+p still opens the palette; its binding description is 'instructions'."""
    pytest.importorskip("textual")
    from textual.command import CommandPalette

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            await pilot.press("ctrl+p")
            await pilot.pause()
            await pilot.pause()
            observed["is_palette"] = isinstance(app.screen, CommandPalette)
            observed["stack"] = [type(s).__name__ for s in app.screen_stack]

    asyncio.run(scenario())
    palette_binding = next(b for b in AssistantTUI.BINDINGS if b.key == "ctrl+p")
    assert palette_binding.description == "instructions"
    assert observed["is_palette"], "ctrl+p did not open the command palette: %s" % (
        observed["stack"],
    )


def test_question_mark_toggles_help_panel(server):
    """? toggles the help panel and is advertised in the left footer list."""
    pytest.importorskip("textual")
    from textual.widgets import HelpPanel

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            assert list(app.screen.query(HelpPanel)) == []
            await pilot.press("?")
            await pilot.pause()
            observed["shown"] = list(app.screen.query(HelpPanel)) != []
            await pilot.press("?")
            await pilot.pause()
            observed["hidden"] = list(app.screen.query(HelpPanel)) == []

    asyncio.run(scenario())
    assert observed["shown"] is True, "? did not mount HelpPanel"
    assert observed["hidden"] is True, "second ? did not remove HelpPanel"


def test_plain_m_maximizes_triage_pane(server):
    pytest.importorskip("textual")

    from stt_daemon.tui.app import AssistantTUI

    from textual.widgets import RichLog

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            assert app.screen.maximized is app.query_one("#main")
            await pilot.press("m")
            await pilot.pause()
            assert app.screen.maximized is None
            assert app.query_one("#triage", RichLog).display is True
            # No chat/command output ingested: chat follows the content rule → hidden.
            assert app.query_one("#chat", RichLog).display is False

    asyncio.run(scenario())


def test_screenshot_saves_svg(server, tmp_path, monkeypatch):
    pytest.importorskip("textual")
    import glob

    from stt_daemon.tui.app import AssistantTUI

    monkeypatch.chdir(tmp_path)
    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            await pilot.press("ctrl+s")
            await pilot.pause()
            await pilot.pause()

    asyncio.run(scenario())
    out_dir = tmp_path / "screenshots"
    assert out_dir.is_dir(), "screenshots/ not created in %s" % tmp_path
    files = glob.glob(str(out_dir / "stt-tui-*.svg"))
    assert files, "no stt-tui-*.svg found in %s" % out_dir
    assert os.path.getsize(files[0]) > 0
    assert glob.glob(str(tmp_path / "stt-tui-*.svg")) == [], \
        "screenshot leaked into %s instead of screenshots/" % tmp_path


def test_chat_hidden_by_default_triage_fills_main(server):
    """Fresh state: #chat hidden, #triage fills the whole #main width."""
    pytest.importorskip("textual")
    from textual.containers import Horizontal
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display
            observed["triage_display"] = app.query_one("#triage", RichLog).display
            observed["main_region"] = app.query_one("#main", Horizontal).region
            observed["triage_region"] = app.query_one("#triage", RichLog).region

    asyncio.run(scenario())
    print("hidden: main=%s triage=%s" % (observed["main_region"], observed["triage_region"]))
    assert observed["chat_display"] is False
    assert observed["triage_display"] is True
    assert (
        abs(observed["triage_region"].width - observed["main_region"].width) <= 2
    ), (observed["triage_region"], observed["main_region"])


def test_chat_mode_shows_chat_and_restores_split(server):
    """mode=chat → #chat visible, triage back to ~1/3 width."""
    pytest.importorskip("textual")
    from textual.containers import Horizontal
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest({"type": "mode", "mode": "chat"})
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display
            observed["main_region"] = app.query_one("#main", Horizontal).region
            observed["triage_region"] = app.query_one("#triage", RichLog).region
            observed["chat_region"] = app.query_one("#chat", RichLog).region

    asyncio.run(scenario())
    print(
        "shown: main=%s triage=%s chat=%s"
        % (observed["main_region"], observed["triage_region"], observed["chat_region"])
    )
    assert observed["chat_display"] is True
    main_w = observed["main_region"].width
    assert abs(observed["triage_region"].width / main_w - 1 / 3) < 0.08, observed
    assert abs(observed["chat_region"].width / main_w - 2 / 3) < 0.08, observed


def test_tool_result_shows_chat(server):
    """Command output (tool_result) → #chat visible."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "tool_result",
                    "tool": "get_datetime",
                    "ok": True,
                    "result": "2026-09-21",
                }
            )
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["chat_display"] is True


def test_error_event_shows_chat(server):
    """An error event → #chat visible."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest({"type": "error", "code": "boom", "message": "kaboom"})
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["chat_display"] is True


def test_executing_mode_shows_chat(server):
    """Assistant executing a command → #chat visible."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest({"type": "mode", "mode": "executing"})
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["chat_display"] is True


def test_cleared_hides_chat_and_restores_full_width(server):
    """cleared event → #chat hidden again, triage full width."""
    pytest.importorskip("textual")
    from textual.containers import Horizontal
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "tool_result",
                    "tool": "get_datetime",
                    "ok": True,
                    "result": "2026-09-21",
                }
            )
            app._render()
            await pilot.pause()
            assert app.query_one("#chat", RichLog).display is True
            app.state.ingest({"type": "cleared"})
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display
            observed["main_region"] = app.query_one("#main", Horizontal).region
            observed["triage_region"] = app.query_one("#triage", RichLog).region

    asyncio.run(scenario())
    print(
        "cleared: main=%s triage=%s"
        % (observed["main_region"], observed["triage_region"])
    )
    assert observed["chat_display"] is False
    assert (
        abs(observed["triage_region"].width - observed["main_region"].width) <= 2
    ), (observed["triage_region"], observed["main_region"])


def test_triage_disabled_chat_stays_visible(server):
    """Triage disabled: #chat stays visible, no crash on render/restore."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app._render()
            await pilot.pause()
            observed["chat_display"] = app.query_one("#chat", RichLog).display
            app._restore_panes()  # must not raise with no #triage/#main
            await pilot.pause()
            observed["chat_display_after"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["chat_display"] is True
    assert observed["chat_display_after"] is True


def test_maximize_restore_with_chat_content_keeps_chat_visible(server):
    """With ingested output, m then m restores with #chat still visible."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            app.state.ingest(
                {
                    "type": "tool_result",
                    "tool": "get_datetime",
                    "ok": True,
                    "result": "2026-09-21",
                }
            )
            app._render()
            await pilot.pause()
            assert app.query_one("#chat", RichLog).display is True
            app.query_one("#triage", RichLog).focus()
            await pilot.pause()
            await pilot.press("m")
            await pilot.pause()
            assert app.screen.maximized is not None
            await pilot.press("m")
            await pilot.pause()
            observed["maximized"] = app.screen.maximized
            observed["triage_display"] = app.query_one("#triage", RichLog).display
            observed["chat_display"] = app.query_one("#chat", RichLog).display

    asyncio.run(scenario())
    assert observed["maximized"] is None
    assert observed["triage_display"] is True
    assert observed["chat_display"] is True


def test_transcript_pane_keeps_updating_past_cap(server):
    """Regression: past MAX_TRANSCRIPTS the running log must still append."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI
    from stt_daemon.tui.state import MAX_TRANSCRIPTS

    path, _service = server
    app = AssistantTUI(path)
    observed: dict = {}

    async def scenario():
        async with app.run_test(size=(80, 40)) as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            for i in range(MAX_TRANSCRIPTS + 5):
                app.state.ingest({"type": "transcript", "text": f"t{i}", "lang": "en"})
            app._render()
            await pilot.pause()

            app.state.ingest({"type": "transcript", "text": "after cap", "lang": "en"})
            app._render()
            await pilot.pause()
            log = app.query_one("#transcript", RichLog)
            observed["lines"] = [str(line) for line in log.lines]

    asyncio.run(scenario())
    assert any("after cap" in line for line in observed["lines"])
    assert len(observed["lines"]) > MAX_TRANSCRIPTS


def _questions_payload():
    return {
        "topic": {
            "type": "choice",
            "instructions": "What is the main theme?",
            "criteria": {"planning": "roadmap or prioritization"},
        }
    }


def _rendered_lines(log):
    return [line.text for line in log.lines]


def _ingest_triage_signals(app):
    app.state.ingest(
        {
            "type": "triage",
            "stage": "signals",
            "triage": {
                "order": ["topic"],
                "items": {
                    "topic": {
                        "kind": "choice",
                        "choice": "planning",
                        "answer_confidence": 0.91,
                    }
                },
            },
        }
    )
    app.state.ingest(
        {
            "type": "status",
            "triage_state": "ok",
            "triage_reason": "",
            "questions": _questions_payload(),
        }
    )


def test_s_key_swaps_triage_pane_to_questions_view(server):
    """Press s: #triage border flips to questions and renders the structured blocks."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            _ingest_triage_signals(app)
            app._render()
            await pilot.pause()
            observed["default_title"] = app.query_one("#triage", RichLog).border_title
            observed["default_lines"] = _rendered_lines(app.query_one("#triage", RichLog))

            await pilot.press("s")
            await pilot.pause()
            observed["questions_title"] = app.query_one("#triage", RichLog).border_title
            observed["questions_lines"] = _rendered_lines(app.query_one("#triage", RichLog))

    asyncio.run(scenario())
    assert observed["default_title"] == "triage"
    assert any("topic: planning (0.91)" in line for line in observed["default_lines"])
    assert observed["questions_title"] == "questions"
    rendered = "\n".join(observed["questions_lines"])
    assert "topic  [choice]" in rendered
    assert "What is the main theme?" in rendered
    assert "planning  — roadmap or prioritization" in rendered
    assert "topic: planning" not in rendered


def test_s_key_again_restores_triage_view(server):
    """Second s: border flips back to triage and the signals view is rewritten."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            _ingest_triage_signals(app)
            app._render()
            await pilot.pause()

            await pilot.press("s")
            await pilot.pause()
            observed["mid_title"] = app.query_one("#triage", RichLog).border_title

            await pilot.press("s")
            await pilot.pause()
            observed["triage_title"] = app.query_one("#triage", RichLog).border_title
            observed["triage_lines"] = _rendered_lines(app.query_one("#triage", RichLog))

    asyncio.run(scenario())
    assert observed["mid_title"] == "questions"
    assert observed["triage_title"] == "triage"
    rendered = "\n".join(observed["triage_lines"])
    assert "topic: planning (0.91)" in rendered
    assert "What is the main theme?" not in rendered


def test_s_key_is_noop_when_triage_disabled(server):
    """triage_enabled=False: action_toggle_questions and s do nothing and never crash."""
    pytest.importorskip("textual")
    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path)

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app.action_toggle_questions()
            await pilot.pause()
            assert app._show_questions is False
            assert not app.query("#triage")
            await pilot.press("s")
            await pilot.pause()
            assert app._show_questions is False
            assert not app.query("#triage")

    asyncio.run(scenario())


def test_status_event_questions_populate_questions_view(server):
    """A status event carrying questions fills state and the toggled pane."""
    pytest.importorskip("textual")
    from textual.widgets import RichLog

    from stt_daemon.tui.app import AssistantTUI

    path, _service = server
    app = AssistantTUI(path, triage_enabled=True)
    observed: dict = {}

    async def scenario():
        async with app.run_test() as pilot:
            await pilot.pause()
            app._timer.stop()  # no background drain: server status must not clobber state
            app._drain()
            observed["before_epoch"] = app.state.questions_epoch
            app.state.ingest({"type": "status", "questions": _questions_payload()})
            app._render()
            await pilot.pause()
            observed["questions"] = app.state.questions
            observed["epoch"] = app.state.questions_epoch

            await pilot.press("s")
            await pilot.pause()
            observed["lines"] = _rendered_lines(app.query_one("#triage", RichLog))

    asyncio.run(scenario())
    assert observed["questions"] == _questions_payload()
    assert observed["epoch"] == observed["before_epoch"] + 1
    assert any("topic  [choice]" in line for line in observed["lines"])