"""Test STT component setup."""
from collections.abc import AsyncIterable, Generator
from http import HTTPStatus
from pathlib import Path
from unittest.mock import AsyncMock

import pytest

from homeassistant.components.stt import (
    DOMAIN,
    AudioBitRates,
    AudioChannels,
    AudioCodecs,
    AudioFormats,
    AudioSampleRates,
    Provider,
    SpeechMetadata,
    SpeechResult,
    SpeechResultState,
    SpeechToTextEntity,
    async_get_provider,
)
from homeassistant.config_entries import ConfigEntry, ConfigEntryState, ConfigFlow
from homeassistant.core import HomeAssistant, State
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.setup import async_setup_component

from .common import mock_stt_entity_platform, mock_stt_platform

from tests.common import (
    MockConfigEntry,
    MockModule,
    mock_config_flow,
    mock_integration,
    mock_platform,
    mock_restore_cache,
)
from tests.typing import ClientSessionGenerator

TEST_DOMAIN = "test"


class BaseProvider:
    """Mock provider."""

    fail_process_audio = False

    def __init__(self) -> None:
        """Init test provider."""
        self.calls: list[tuple[SpeechMetadata, AsyncIterable[bytes]]] = []

    @property
    def supported_languages(self) -> list[str]:
        """Return a list of supported languages."""
        return ["en"]

    @property
    def supported_formats(self) -> list[AudioFormats]:
        """Return a list of supported formats."""
        return [AudioFormats.WAV, AudioFormats.OGG]

    @property
    def supported_codecs(self) -> list[AudioCodecs]:
        """Return a list of supported codecs."""
        return [AudioCodecs.PCM, AudioCodecs.OPUS]

    @property
    def supported_bit_rates(self) -> list[AudioBitRates]:
        """Return a list of supported bitrates."""
        return [AudioBitRates.BITRATE_16]

    @property
    def supported_sample_rates(self) -> list[AudioSampleRates]:
        """Return a list of supported samplerates."""
        return [AudioSampleRates.SAMPLERATE_16000]

    @property
    def supported_channels(self) -> list[AudioChannels]:
        """Return a list of supported channels."""
        return [AudioChannels.CHANNEL_MONO]

    async def async_process_audio_stream(
        self, metadata: SpeechMetadata, stream: AsyncIterable[bytes]
    ) -> SpeechResult:
        """Process an audio stream."""
        self.calls.append((metadata, stream))
        if self.fail_process_audio:
            return SpeechResult(None, SpeechResultState.ERROR)

        return SpeechResult("test_result", SpeechResultState.SUCCESS)


class MockProvider(BaseProvider, Provider):
    """Mock provider."""


class MockProviderEntity(BaseProvider, SpeechToTextEntity):
    """Mock provider entity."""


@pytest.fixture
def mock_provider() -> MockProvider:
    """Test provider fixture."""
    return MockProvider()


@pytest.fixture
def mock_provider_entity() -> MockProviderEntity:
    """Test provider entity fixture."""
    return MockProviderEntity()


class STTFlow(ConfigFlow):
    """Test flow."""


@pytest.fixture(autouse=True)
def config_flow_fixture(hass: HomeAssistant) -> Generator[None, None, None]:
    """Mock config flow."""
    mock_platform(hass, f"{TEST_DOMAIN}.config_flow")

    with mock_config_flow(TEST_DOMAIN, STTFlow):
        yield


@pytest.fixture(name="setup")
async def setup_fixture(
    hass: HomeAssistant,
    tmp_path: Path,
    request: pytest.FixtureRequest,
) -> None:
    """Set up the test environment."""
    if request.param == "mock_setup":
        await mock_setup(hass, tmp_path, MockProvider())
    elif request.param == "mock_config_entry_setup":
        await mock_config_entry_setup(hass, tmp_path, MockProviderEntity())
    else:
        raise RuntimeError("Invalid setup fixture")


async def mock_setup(
    hass: HomeAssistant,
    tmp_path: Path,
    mock_provider: MockProvider,
) -> None:
    """Set up a test provider."""
    mock_stt_platform(
        hass,
        tmp_path,
        TEST_DOMAIN,
        async_get_engine=AsyncMock(return_value=mock_provider),
    )
    assert await async_setup_component(hass, "stt", {"stt": {"platform": TEST_DOMAIN}})
    await hass.async_block_till_done()


async def mock_config_entry_setup(
    hass: HomeAssistant, tmp_path: Path, mock_provider_entity: MockProviderEntity
) -> MockConfigEntry:
    """Set up a test provider via config entry."""

    async def async_setup_entry_init(
        hass: HomeAssistant, config_entry: ConfigEntry
    ) -> bool:
        """Set up test config entry."""
        await hass.config_entries.async_forward_entry_setup(config_entry, DOMAIN)
        return True

    async def async_unload_entry_init(
        hass: HomeAssistant, config_entry: ConfigEntry
    ) -> bool:
        """Unload up test config entry."""
        await hass.config_entries.async_forward_entry_unload(config_entry, DOMAIN)
        return True

    mock_integration(
        hass,
        MockModule(
            TEST_DOMAIN,
            async_setup_entry=async_setup_entry_init,
            async_unload_entry=async_unload_entry_init,
        ),
    )

    async def async_setup_entry_platform(
        hass: HomeAssistant,
        config_entry: ConfigEntry,
        async_add_entities: AddEntitiesCallback,
    ) -> None:
        """Set up test stt platform via config entry."""
        async_add_entities([mock_provider_entity])

    mock_stt_entity_platform(hass, tmp_path, TEST_DOMAIN, async_setup_entry_platform)

    config_entry = MockConfigEntry(domain=TEST_DOMAIN)
    config_entry.add_to_hass(hass)
    assert await hass.config_entries.async_setup(config_entry.entry_id)
    await hass.async_block_till_done()

    return config_entry


@pytest.mark.parametrize(
    "setup", ["mock_setup", "mock_config_entry_setup"], indirect=True
)
async def test_get_provider_info(
    hass: HomeAssistant,
    hass_client: ClientSessionGenerator,
    setup: str,
) -> None:
    """Test engine that doesn't exist."""
    client = await hass_client()
    response = await client.get(f"/api/stt/{TEST_DOMAIN}")
    assert response.status == HTTPStatus.OK
    assert await response.json() == {
        "languages": ["en"],
        "formats": ["wav", "ogg"],
        "codecs": ["pcm", "opus"],
        "sample_rates": [16000],
        "bit_rates": [16],
        "channels": [1],
    }


@pytest.mark.parametrize(
    "setup", ["mock_setup", "mock_config_entry_setup"], indirect=True
)
async def test_non_existing_provider(
    hass: HomeAssistant,
    hass_client: ClientSessionGenerator,
    setup: str,
) -> None:
    """Test streaming to engine that doesn't exist."""
    client = await hass_client()

    response = await client.get("/api/stt/not_exist")
    assert response.status == HTTPStatus.NOT_FOUND

    response = await client.post(
        "/api/stt/not_exist",
        headers={
            "X-Speech-Content": (
                "format=wav; codec=pcm; sample_rate=16000; bit_rate=16; channel=1;"
                " language=en"
            )
        },
    )
    assert response.status == HTTPStatus.NOT_FOUND


@pytest.mark.parametrize(
    "setup", ["mock_setup", "mock_config_entry_setup"], indirect=True
)
async def test_stream_audio(
    hass: HomeAssistant,
    hass_client: ClientSessionGenerator,
    setup: str,
) -> None:
    """Test streaming audio and getting response."""
    client = await hass_client()
    response = await client.post(
        f"/api/stt/{TEST_DOMAIN}",
        headers={
            "X-Speech-Content": (
                "format=wav; codec=pcm; sample_rate=16000; bit_rate=16; channel=1;"
                " language=en"
            )
        },
    )
    assert response.status == HTTPStatus.OK
    assert await response.json() == {"text": "test_result", "result": "success"}


@pytest.mark.parametrize(
    "setup", ["mock_setup", "mock_config_entry_setup"], indirect=True
)
@pytest.mark.parametrize(
    ("header", "status", "error"),
    (
        (None, 400, "Missing X-Speech-Content header"),
        (
            (
                "format=wav; codec=pcm; sample_rate=16000; bit_rate=16; channel=100;"
                " language=en; unknown=1"
            ),
            400,
            "Invalid field: unknown",
        ),
        (
            (
                "format=wav; codec=pcm; sample_rate=16000; bit_rate=16; channel=100;"
                " language=en"
            ),
            400,
            "Wrong format of X-Speech-Content: 100 is not a valid AudioChannels",
        ),
        (
            (
                "format=wav; codec=pcm; sample_rate=16000; bit_rate=16; channel=bad channel;"
                " language=en"
            ),
            400,
            "Wrong format of X-Speech-Content: invalid literal for int() with base 10: 'bad channel'",
        ),
        (
            "format=wav; codec=pcm; sample_rate=16000",
            400,
            "Missing language in X-Speech-Content header",
        ),
    ),
)
async def test_metadata_errors(
    hass: HomeAssistant,
    hass_client: ClientSessionGenerator,
    header: str | None,
    status: int,
    error: str,
    setup: str,
) -> None:
    """Test metadata errors."""
    client = await hass_client()
    headers: dict[str, str] = {}
    if header:
        headers["X-Speech-Content"] = header

    response = await client.post(f"/api/stt/{TEST_DOMAIN}", headers=headers)
    assert response.status == status
    assert await response.text() == error


async def test_get_provider(
    hass: HomeAssistant,
    tmp_path: Path,
    mock_provider: MockProvider,
) -> None:
    """Test we can get STT providers."""
    await mock_setup(hass, tmp_path, mock_provider)
    assert mock_provider == async_get_provider(hass, TEST_DOMAIN)


async def test_config_entry_unload(
    hass: HomeAssistant, tmp_path: Path, mock_provider_entity: MockProviderEntity
) -> None:
    """Test we can unload config entry."""
    config_entry = await mock_config_entry_setup(hass, tmp_path, mock_provider_entity)
    assert config_entry.state == ConfigEntryState.LOADED
    await hass.config_entries.async_unload(config_entry.entry_id)
    assert config_entry.state == ConfigEntryState.NOT_LOADED


def test_entity_name_raises_before_addition(
    hass: HomeAssistant,
    tmp_path: Path,
    mock_provider_entity: MockProviderEntity,
) -> None:
    """Test entity name raises before addition to Home Assistant."""
    with pytest.raises(RuntimeError):
        mock_provider_entity.name  # pylint: disable=pointless-statement


async def test_restore_state(
    hass: HomeAssistant,
    tmp_path: Path,
    mock_provider_entity: MockProviderEntity,
) -> None:
    """Test we restore state in the integration."""
    entity_id = f"{DOMAIN}.{TEST_DOMAIN}"
    timestamp = "2023-01-01T23:59:59+00:00"
    mock_restore_cache(hass, (State(entity_id, timestamp),))

    config_entry = await mock_config_entry_setup(hass, tmp_path, mock_provider_entity)
    await hass.async_block_till_done()

    assert config_entry.state == ConfigEntryState.LOADED
    state = hass.states.get(entity_id)
    assert state
    assert state.state == timestamp