"""The tests for the  MQTT binary sensor platform."""
import unittest

from homeassistant.setup import setup_component
import homeassistant.components.binary_sensor as binary_sensor
from homeassistant.const import (STATE_OFF, STATE_ON,
                                 STATE_UNAVAILABLE)

from tests.common import (
    get_test_home_assistant, mock_mqtt_component, fire_mqtt_message)


class TestSensorMQTT(unittest.TestCase):
    """Test the MQTT sensor."""

    def setUp(self):  # pylint: disable=invalid-name
        """Setup things to be run when tests are started."""
        self.hass = get_test_home_assistant()
        mock_mqtt_component(self.hass)

    def tearDown(self):  # pylint: disable=invalid-name
        """Stop everything that was started."""
        self.hass.stop()

    def test_setting_sensor_value_via_mqtt_message(self):
        """Test the setting of the value via MQTT."""
        assert setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'state_topic': 'test-topic',
                'payload_on': 'ON',
                'payload_off': 'OFF',
            }
        })

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_OFF, state.state)

        fire_mqtt_message(self.hass, 'test-topic', 'ON')
        self.hass.block_till_done()
        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_ON, state.state)

        fire_mqtt_message(self.hass, 'test-topic', 'OFF')
        self.hass.block_till_done()
        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_OFF, state.state)

    def test_valid_device_class(self):
        """Test the setting of a valid sensor class."""
        assert setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'device_class': 'motion',
                'state_topic': 'test-topic',
            }
        })

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual('motion', state.attributes.get('device_class'))

    def test_invalid_device_class(self):
        """Test the setting of an invalid sensor class."""
        assert setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'device_class': 'abc123',
                'state_topic': 'test-topic',
            }
        })

        state = self.hass.states.get('binary_sensor.test')
        self.assertIsNone(state)

    def test_availability_without_topic(self):
        """Test availability without defined availability topic."""
        self.assertTrue(setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'state_topic': 'state-topic',
            }
        }))

        state = self.hass.states.get('binary_sensor.test')
        self.assertNotEqual(STATE_UNAVAILABLE, state.state)

    def test_availability_by_defaults(self):
        """Test availability by defaults with defined topic."""
        self.assertTrue(setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'state_topic': 'state-topic',
                'availability_topic': 'availability-topic'
            }
        }))

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_UNAVAILABLE, state.state)

        fire_mqtt_message(self.hass, 'availability-topic', 'online')
        self.hass.block_till_done()

        state = self.hass.states.get('binary_sensor.test')
        self.assertNotEqual(STATE_UNAVAILABLE, state.state)

        fire_mqtt_message(self.hass, 'availability-topic', 'offline')
        self.hass.block_till_done()

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_UNAVAILABLE, state.state)

    def test_availability_by_custom_payload(self):
        """Test availability by custom payload with defined topic."""
        self.assertTrue(setup_component(self.hass, binary_sensor.DOMAIN, {
            binary_sensor.DOMAIN: {
                'platform': 'mqtt',
                'name': 'test',
                'state_topic': 'state-topic',
                'availability_topic': 'availability-topic',
                'payload_available': 'good',
                'payload_not_available': 'nogood'
            }
        }))

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_UNAVAILABLE, state.state)

        fire_mqtt_message(self.hass, 'availability-topic', 'good')
        self.hass.block_till_done()

        state = self.hass.states.get('binary_sensor.test')
        self.assertNotEqual(STATE_UNAVAILABLE, state.state)

        fire_mqtt_message(self.hass, 'availability-topic', 'nogood')
        self.hass.block_till_done()

        state = self.hass.states.get('binary_sensor.test')
        self.assertEqual(STATE_UNAVAILABLE, state.state)
