"""Test init of APCUPSd integration."""

import asyncio
from collections import OrderedDict
from unittest.mock import patch

import pytest
from syrupy.assertion import SnapshotAssertion

from homeassistant.components.apcupsd.const import DOMAIN
from homeassistant.components.apcupsd.coordinator import UPDATE_INTERVAL
from homeassistant.config_entries import SOURCE_USER, ConfigEntryState
from homeassistant.const import STATE_UNAVAILABLE
from homeassistant.core import HomeAssistant
from homeassistant.helpers import device_registry as dr
from homeassistant.helpers.entity_platform import async_get_platforms
from homeassistant.util import slugify, utcnow

from . import CONF_DATA, MOCK_MINIMAL_STATUS, MOCK_STATUS, async_init_integration

from tests.common import MockConfigEntry, async_fire_time_changed


@pytest.mark.parametrize(
    "status",
    [
        # Contains "SERIALNO" and "UPSNAME" fields.
        # We should create devices for the entities and prefix their IDs with "MyUPS".
        MOCK_STATUS,
        # Contains "SERIALNO" but no "UPSNAME" field.
        # We should create devices for the entities and prefix their IDs with default "APC UPS".
        MOCK_MINIMAL_STATUS | {"SERIALNO": "XXXX"},
        # Does not contain either "SERIALNO" field or "UPSNAME" field.
        # Our integration should work fine without it by falling back to config entry ID as unique
        # ID and "APC UPS" as default name.
        MOCK_MINIMAL_STATUS,
        # Some models report "Blank" as SERIALNO, but we should treat it as not reported.
        MOCK_MINIMAL_STATUS | {"SERIALNO": "Blank"},
    ],
)
async def test_async_setup_entry(
    hass: HomeAssistant,
    status: OrderedDict,
    device_registry: dr.DeviceRegistry,
    snapshot: SnapshotAssertion,
) -> None:
    """Test a successful setup entry."""
    config_entry = await async_init_integration(hass, status=status)
    device_entry = device_registry.async_get_device(
        identifiers={(DOMAIN, config_entry.unique_id or config_entry.entry_id)}
    )
    name = f"device_{device_entry.name}_{status.get('SERIALNO', '<no serial>')}"
    assert device_entry == snapshot(name=name)

    platforms = async_get_platforms(hass, DOMAIN)
    assert len(platforms) > 0
    assert all(len(p.entities) > 0 for p in platforms)


@pytest.mark.parametrize(
    "error",
    [OSError(), asyncio.IncompleteReadError(partial=b"", expected=0)],
)
async def test_connection_error(hass: HomeAssistant, error: Exception) -> None:
    """Test connection error during integration setup."""
    entry = MockConfigEntry(
        version=1,
        domain=DOMAIN,
        title="APCUPSd",
        data=CONF_DATA,
        source=SOURCE_USER,
    )

    entry.add_to_hass(hass)

    with patch("aioapcaccess.request_status", side_effect=error):
        await hass.config_entries.async_setup(entry.entry_id)
        assert entry.state is ConfigEntryState.SETUP_RETRY


async def test_unload_remove_entry(hass: HomeAssistant) -> None:
    """Test successful unload and removal of an entry."""
    entry = await async_init_integration(
        hass, host="test1", status=MOCK_STATUS, entry_id="entry-id-1"
    )
    assert entry.state is ConfigEntryState.LOADED

    # Unload the entry.
    assert await hass.config_entries.async_unload(entry.entry_id)
    await hass.async_block_till_done()
    assert entry.state is ConfigEntryState.NOT_LOADED

    # Remove the entry.
    await hass.config_entries.async_remove(entry.entry_id)
    await hass.async_block_till_done()
    assert len(hass.config_entries.async_entries(DOMAIN)) == 0


async def test_availability(hass: HomeAssistant) -> None:
    """Ensure that we mark the entity's availability properly when network is down / back up."""
    await async_init_integration(hass)

    device_slug = slugify(MOCK_STATUS["UPSNAME"])
    state = hass.states.get(f"sensor.{device_slug}_load")
    assert state
    assert state.state != STATE_UNAVAILABLE
    assert pytest.approx(float(state.state)) == 14.0

    with patch("aioapcaccess.request_status") as mock_request_status:
        # Mock a network error and then trigger an auto-polling event.
        mock_request_status.side_effect = OSError()
        future = utcnow() + UPDATE_INTERVAL
        async_fire_time_changed(hass, future)
        await hass.async_block_till_done()

        # Sensors should be marked as unavailable.
        state = hass.states.get(f"sensor.{device_slug}_load")
        assert state
        assert state.state == STATE_UNAVAILABLE

        # Reset the API to return a new status and update.
        mock_request_status.side_effect = None
        mock_request_status.return_value = MOCK_STATUS | {"LOADPCT": "15.0 Percent"}
        future = future + UPDATE_INTERVAL
        async_fire_time_changed(hass, future)
        await hass.async_block_till_done()

        # Sensors should be online now with the new value.
        state = hass.states.get(f"sensor.{device_slug}_load")
        assert state
        assert state.state != STATE_UNAVAILABLE
        assert pytest.approx(float(state.state)) == 15.0