"""Test KNX sensor."""
from homeassistant.components.knx.const import CONF_STATE_ADDRESS, CONF_SYNC_STATE
from homeassistant.components.knx.schema import SensorSchema
from homeassistant.const import CONF_NAME, CONF_TYPE, STATE_UNKNOWN
from homeassistant.core import HomeAssistant

from .conftest import KNXTestKit

from tests.common import async_capture_events


async def test_sensor(hass: HomeAssistant, knx: KNXTestKit):
    """Test simple KNX sensor."""

    await knx.setup_integration(
        {
            SensorSchema.PLATFORM_NAME: {
                CONF_NAME: "test",
                CONF_STATE_ADDRESS: "1/1/1",
                CONF_TYPE: "current",  # 2 byte unsigned int
            }
        }
    )
    assert len(hass.states.async_all()) == 1
    state = hass.states.get("sensor.test")
    assert state.state is STATE_UNKNOWN

    # StateUpdater initialize state
    await knx.assert_read("1/1/1")
    await knx.receive_response("1/1/1", (0, 40))
    state = hass.states.get("sensor.test")
    assert state.state == "40"

    # update from KNX
    await knx.receive_write("1/1/1", (0x03, 0xE8))
    state = hass.states.get("sensor.test")
    assert state.state == "1000"

    # don't answer to GroupValueRead requests
    await knx.receive_read("1/1/1")
    await knx.assert_no_telegram()


async def test_always_callback(hass: HomeAssistant, knx: KNXTestKit):
    """Test KNX sensor with always_callback."""

    events = async_capture_events(hass, "state_changed")
    await knx.setup_integration(
        {
            SensorSchema.PLATFORM_NAME: [
                {
                    CONF_NAME: "test_normal",
                    CONF_STATE_ADDRESS: "1/1/1",
                    CONF_SYNC_STATE: False,
                    CONF_TYPE: "percentU8",
                },
                {
                    CONF_NAME: "test_always",
                    CONF_STATE_ADDRESS: "2/2/2",
                    SensorSchema.CONF_ALWAYS_CALLBACK: True,
                    CONF_SYNC_STATE: False,
                    CONF_TYPE: "percentU8",
                },
            ]
        }
    )
    assert len(hass.states.async_all()) == 2
    # state changes form None to "unknown"
    assert len(events) == 2

    # receive initial telegram
    await knx.receive_write("1/1/1", (0x42,))
    await knx.receive_write("2/2/2", (0x42,))
    await hass.async_block_till_done()
    assert len(events) == 4

    # receive second telegram with identical payload
    # always_callback shall force state_changed event
    await knx.receive_write("1/1/1", (0x42,))
    await knx.receive_write("2/2/2", (0x42,))
    await hass.async_block_till_done()
    assert len(events) == 5

    # receive telegram with different payload
    await knx.receive_write("1/1/1", (0xFA,))
    await knx.receive_write("2/2/2", (0xFA,))
    await hass.async_block_till_done()
    assert len(events) == 7

    # receive telegram with second payload again
    # always_callback shall force state_changed event
    await knx.receive_write("1/1/1", (0xFA,))
    await knx.receive_write("2/2/2", (0xFA,))
    await hass.async_block_till_done()
    assert len(events) == 8