"""t10 tests: command routing, play_media channel port, remote entity, volume.

Concrete fakes expose the ordering precisely: protocol → ADB keyevent →
legacy external entity, plus the §7 channel digit sequence (protocol digits,
~0.1 s apart, no ENTER, new sequence cancels in-flight). A scripted media
layer marks which tier served each command.
"""

import asyncio
import sys

import entity_stublib
import pytest
from entity_stublib import ENTITIES_STUB_NAMES, install, load_entity_modules
from nsh.connection import ShieldConnectionManager


@pytest.fixture(autouse=True)
def scoped_entity_stubs():
    """Container for the HA stubs + loaded entity modules (t7 discipline)."""
    snapshot = {name: sys.modules.get(name) for name in ENTITIES_STUB_NAMES}
    install()
    yield load_entity_modules()
    for name in ENTITIES_STUB_NAMES:
        original = snapshot[name]
        if original is None:
            sys.modules.pop(name, None)
        else:
            sys.modules[name] = original


class FakeProtocolClient:
    """Records key/launch calls; optional scripted failures."""

    def __init__(self):
        self.key_calls: list[tuple[str, str]] = []
        self.launch_calls: list[str] = []
        self.fail_keys: set[str] = set()
        self.fail_all = False

    def send_key_command(self, key, direction="SHORT"):
        self.key_calls.append((key, direction))
        if self.fail_all or key.upper() in self.fail_keys:
            raise ConnectionError("protocol transport down")

    def send_launch_app_command(self, app_link_or_app_id: str) -> None:
        self.launch_calls.append(app_link_or_app_id)
        if self.fail_all:
            raise ConnectionError("transport down")


class FakeAdbPoller:
    """Minimal ADB surface for keyevent and digit fallback paths."""

    def __init__(self):
        self.media_calls: list[str] = []
        self.digits: list[str] = []
        self.enter_calls: list[bool] = []
        self.results: dict[str, bool] = {}
        self.digit_result = True

    @property
    def connected(self):
        return True

    async def send_media_command(self, command: str) -> bool:
        self.media_calls.append(command)
        return self.results.get(command, True)

    async def send_digit_keyevent(self, digit: str) -> bool:
        self.digits.append(digit)
        return self.digit_result

    async def send_enter_keyevent(self) -> bool:
        self.enter_calls.append(True)
        return True

    async def bring_to_foreground(self, package: str) -> bool:
        return True


def make_manager(store=None, poller=None, protocol=None):
    return ShieldConnectionManager(
        hass=None,
        entry=None,
        poller=poller or FakeAdbPoller(),
        protocol=protocol or FakeProtocolClient(),
        store=store,
    )


@pytest.fixture(name="modules")
def load_modules_fixture():
    return load_entity_modules()


def make_player(modules, manager=None, jellyfin_entity=None, options=None):
    """A pre-initialised media_player entity bound to the tested manager."""
    from types import SimpleNamespace

    mp_module = modules["media_player"]
    if manager is None:
        manager = make_manager()
    entry = SimpleNamespace(options={}, data={}, title="mdarcy")
    manager.entry = entry

    def _set_option(key, value):
        entry.options[key] = value

    entry.set_option = _set_option
    player = mp_module.NvidiaShieldMediaPlayer.__new__(mp_module.NvidiaShieldMediaPlayer)
    player.hass = None
    player._entry = entry
    player._manager = manager
    player._intent = None
    player.hass = entity_stublib.FakeHass()
    player._entity_tasks = set()
    player._channel_task = None
    player.async_write_ha_state = lambda: None
    player._read = lambda eid: None

    served = []

    async def _cmd(service, **kwargs):
        served.append(("legacy", service))
        return None

    player._cmd = _cmd

    captured_intents = []

    def _set_intent(service, target):
        intent = SimpleNamespace(
            target_state=getattr(target, "value", target),
            command=service,
            created_at=0.0,
            prior_state=None,
            retry_count=0,
            via_adb=False,
            via_protocol=False,
            adb_command=None,
            protocol_key=None,
        )

        def _unsub():
            return None

        player._intent = intent
        captured_intents.append(intent)
        return None

    player._set_intent = _set_intent
    return player, served, captured_intents


class TestMediaCommandRouting:
    async def test_protocol_serves_media_command(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol
        player._intent = None

        player.async_write_ha_state = lambda: None

        await player._media_cmd("media_play", "play", "playing")

        assert protocol.key_calls == [("KEYCODE_MEDIA_PLAY", "SHORT")]
        assert served == []

    async def test_intent_records_protocol_path_for_retries(self, modules):
        player, _served, _intents = make_player(modules)
        player._set_intent("media_play", type("S", (), {"value": "playing"})())
        player.async_write_ha_state = lambda: None
        await player._media_cmd("media_play", "play", "playing")
        # retry metadata stamped: the protocol path is recorded on the intent
        assert player._intent is not None
        assert player._intent.via_protocol is True
        assert player._intent.protocol_key == "KEYCODE_MEDIA_PLAY"


class TestChannelDigits:
    async def test_digit_sequence_digit_part_delivery(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol

        await player._channel_entry_sequence(["4", "0", "9", "6"])

        # protocol digits: KEYCODE_{digit} SHORT each
        assert protocol.key_calls == [
            ("KEYCODE_4", "SHORT"),
            ("KEYCODE_0", "SHORT"),
            ("KEYCODE_9", "SHORT"),
            ("KEYCODE_6", "SHORT"),
        ]
        assert served == []  # never fell through to legacy

    async def test_new_channel_cancels_inflight_sequence(self, modules):
        player, _served, _intents = make_player(modules)
        protocol = player._manager._protocol

        # start a long sequence (real path), then a new play_media replaces it
        first_task = player._track_task(player._channel_entry_sequence(["1", "2", "3"]))
        player._channel_task = first_task  # as async_play_media tracks it

        await player.async_play_media("channel", "98")
        await asyncio.sleep(0.02)

        assert first_task.cancelled()
        assert "KEYCODE_2" not in [k for k, _d in protocol.key_calls]
        player._cancel_inflight_channel()  # test cleanup

    async def test_fallback_to_adb_digits_when_protocol_down(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol
        protocol.fail_all = True

        await player._channel_entry_sequence(["5"])

        assert protocol.key_calls == [("KEYCODE_5", "SHORT")]
        assert player._manager._poller.digits == ["5"]  # ADB digit keyevent served
        assert served == []

    async def test_optional_enter_falls_back_to_adb_keyevent(self, modules):
        player, served, _i = make_player(modules)
        protocol = player._manager._protocol
        poller = player._manager._poller
        protocol.fail_keys.add("KEYCODE_ENTER")
        protocol.key_calls.clear()

        player._entry.options["channel_send_enter"] = True  # §7 optional ENTER on

        await player._channel_entry_sequence(["4", "1"])  # digits fine, ENTER fails

        # digits served by protocol; ENTER retried over ADB keyevent 66
        assert ("KEYCODE_4", "SHORT") in protocol.key_calls
        assert poller.digits == []  # digits were fine over the protocol
        assert poller.enter_calls == [True]
        assert served == []

    async def test_legacy_fallback_when_both_transports_down(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol
        protocol.fail_all = True
        player._manager._poller.digit_result = False

        await player._channel_entry_sequence(["7"])

        assert served == [("legacy", "play_media")]  # transitional path used


class TestAppAndUrls:
    async def test_app_launch_calls_protocol(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol

        await player.async_play_media("app", "com.plex.hdx")

        assert protocol.launch_calls == ["com.plex.hdx"]  # C-LAUNCH auto-prefix
        assert served == []

    async def test_url_launch_passes_through_unchanged(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol

        await player.async_play_media("url", "plex://open")

        assert protocol.launch_calls == ["plex://open"]

    async def test_unknown_media_type_no_send(self, modules):
        player, served, _intents = make_player(modules)
        protocol = player._manager._protocol

        await player.async_play_media("spotify_uri", "spotify:track:x")

        assert protocol.launch_calls == []
        assert protocol.key_calls == []
        assert served == []


class TestRemoteEntity:
    async def test_split_command_prefixes(self, modules):
        module = modules["remote"]
        assert module._split_command("SHORT:home") == ("home", "SHORT")
        assert module._split_command("START_LONG:home") == ("home", "START_LONG")
        assert module._split_command("END_LONG:home") == ("home", "END_LONG")
        assert module._split_command("home") == ("home", "SHORT")

    async def test_key_code_name_mapping(self, modules):
        module = modules["remote"]
        assert module._key_code_name("home") == "KEYCODE_HOME"
        assert module._key_code_name("KEYCODE_HOME") == "KEYCODE_HOME"
        assert module._key_code_name("KEYCODE_HDMI_1") == "KEYCODE_HDMI_1"
        assert module._key_code_name("play") == "KEYCODE_MEDIA_PLAY"

    async def test_send_command_hits_protocol(self, modules):
        entity = _remote_entity(modules)
        protocol = entity._manager_of()._protocol

        await entity.async_send_command(["HOME"])

        assert protocol.key_calls == [("KEYCODE_HOME", "SHORT")]

    async def test_send_command_honors_hold_secs(self, modules):
        entity = _remote_entity(modules)
        protocol = entity._manager_of()._protocol

        await entity.async_send_command(["home"], hold_secs=0.05)

        assert protocol.key_calls == [
            ("KEYCODE_HOME", "START_LONG"),
            ("KEYCODE_HOME", "END_LONG"),
        ]

    async def test_send_command_honors_num_repeats(self, modules):
        entity = _remote_entity(modules)
        protocol = entity._manager_of()._protocol

        await entity.async_send_command(["home"], num_repeats=3)

        assert len(protocol.key_calls) == 3

    async def test_turn_on_off_send_power_key_respecting_is_on(self, modules):
        entity = _remote_entity(modules)
        manager = entity._manager_of()
        protocol = manager._protocol

        # push "already off" — turn_on should send POWER, turn_off should not
        manager._on_is_on(False)
        await entity.async_turn_on()
        assert protocol.key_calls == [("KEYCODE_POWER", "SHORT")]

        protocol.key_calls.clear()
        await entity.async_turn_off()
        assert protocol.key_calls == []

        # push "on" — turn_off should send POWER, turn_on should not
        manager._on_is_on(True)
        protocol.key_calls.clear()
        await entity.async_turn_off()
        assert protocol.key_calls == [("KEYCODE_POWER", "SHORT")]
        protocol.key_calls.clear()
        await entity.async_turn_on()
        assert protocol.key_calls == []


class TestVolumeAndPowerLadder:
    async def test_volume_readout_from_protocol_push(self, modules):
        player, served, _intents = make_player(modules)
        manager = player._manager
        manager._on_volume_info({"level": 7, "max": 15, "muted": True})

        assert player.volume_level == pytest.approx(7 / 15)
        assert player.is_volume_muted is True

    async def test_volume_set_is_not_claimed(self, modules):
        """C-VOL: VOLUME_SET stays out of supported features (readout only)."""
        from nsh.media_player import _BASE_FEATURES  # noqa: PLC0415

        assert not (_BASE_FEATURES & (1 << 5))  # VOLUME_SET bit off

    async def test_is_on_ladder_protocol_first(self, modules):
        player, _served, _intents = make_player(modules)
        manager = player._manager

        # no protocol push, no ADB wake data: fall to the plug/other logic
        assert manager.is_on is None

        manager._on_is_on(True)
        assert player._is_power_on() is True

        manager._on_is_on(False)
        assert player._is_power_on() is False

    async def test_adb_wake_used_when_protocol_silent(self, modules):
        player, _served, _intents = make_player(modules)
        manager = player._manager
        manager.store.set("awake", False)
        # protocol silent (is_on None) → ADB wake is the decision
        assert manager.is_on is None
        assert player._is_power_on() is False


# ── shared helpers ──


def _remote_entity(modules):
    from types import SimpleNamespace

    remote_module = modules["remote"]
    entry = SimpleNamespace(
        options={},
        data={},
        title="mdarcy",
        entry_id="e1",
    )
    manager = make_manager()
    entry.runtime_data = manager
    entity = remote_module.NvidiaShieldRemoteEntity.__new__(
        remote_module.NvidiaShieldRemoteEntity
    )
    entity.hass = None
    entity._entry = entry
    entity._manager = manager
    entity._attr_unique_id = None
    entity._manager_unregistered = None
    return entity


async def _noop_async(*args, **kwargs):
    return None