"""The tests for the Input number component."""
# pylint: disable=protected-access
import asyncio
import unittest

from homeassistant.core import CoreState, State, Context
from homeassistant.components.input_number import (
    ATTR_VALUE, DOMAIN, SERVICE_DECREMENT, SERVICE_INCREMENT,
    SERVICE_SET_VALUE)
from homeassistant.const import ATTR_ENTITY_ID
from homeassistant.loader import bind_hass
from homeassistant.setup import setup_component, async_setup_component

from tests.common import get_test_home_assistant, mock_restore_cache


@bind_hass
def set_value(hass, entity_id, value):
    """Set input_number to value.

    This is a legacy helper method. Do not use it for new tests.
    """
    hass.services.call(DOMAIN, SERVICE_SET_VALUE, {
        ATTR_ENTITY_ID: entity_id,
        ATTR_VALUE: value,
    })


@bind_hass
def increment(hass, entity_id):
    """Increment value of entity.

    This is a legacy helper method. Do not use it for new tests.
    """
    hass.services.call(DOMAIN, SERVICE_INCREMENT, {
        ATTR_ENTITY_ID: entity_id
    })


@bind_hass
def decrement(hass, entity_id):
    """Decrement value of entity.

    This is a legacy helper method. Do not use it for new tests.
    """
    hass.services.call(DOMAIN, SERVICE_DECREMENT, {
        ATTR_ENTITY_ID: entity_id
    })


class TestInputNumber(unittest.TestCase):
    """Test the input number component."""

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

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

    def test_config(self):
        """Test config."""
        invalid_configs = [
            None,
            {},
            {'name with space': None},
            {'test_1': {
                'min': 50,
                'max': 50,
            }},
        ]
        for cfg in invalid_configs:
            assert not setup_component(self.hass, DOMAIN, {DOMAIN: cfg})

    def test_set_value(self):
        """Test set_value method."""
        assert setup_component(self.hass, DOMAIN, {DOMAIN: {
            'test_1': {
                'initial': 50,
                'min': 0,
                'max': 100,
            },
        }})
        entity_id = 'input_number.test_1'

        state = self.hass.states.get(entity_id)
        assert 50 == float(state.state)

        set_value(self.hass, entity_id, '30.4')
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 30.4 == float(state.state)

        set_value(self.hass, entity_id, '70')
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 70 == float(state.state)

        set_value(self.hass, entity_id, '110')
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 70 == float(state.state)

    def test_increment(self):
        """Test increment method."""
        assert setup_component(self.hass, DOMAIN, {DOMAIN: {
            'test_2': {
                'initial': 50,
                'min': 0,
                'max': 51,
            },
        }})
        entity_id = 'input_number.test_2'

        state = self.hass.states.get(entity_id)
        assert 50 == float(state.state)

        increment(self.hass, entity_id)
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 51 == float(state.state)

        increment(self.hass, entity_id)
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 51 == float(state.state)

    def test_decrement(self):
        """Test decrement method."""
        assert setup_component(self.hass, DOMAIN, {DOMAIN: {
            'test_3': {
                'initial': 50,
                'min': 49,
                'max': 100,
            },
        }})
        entity_id = 'input_number.test_3'

        state = self.hass.states.get(entity_id)
        assert 50 == float(state.state)

        decrement(self.hass, entity_id)
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 49 == float(state.state)

        decrement(self.hass, entity_id)
        self.hass.block_till_done()

        state = self.hass.states.get(entity_id)
        assert 49 == float(state.state)

    def test_mode(self):
        """Test mode settings."""
        assert setup_component(self.hass, DOMAIN, {DOMAIN: {
                'test_default_slider': {
                    'min': 0,
                    'max': 100,
                },
                'test_explicit_box': {
                    'min': 0,
                    'max': 100,
                    'mode': 'box',
                },
                'test_explicit_slider': {
                    'min': 0,
                    'max': 100,
                    'mode': 'slider',
                },
            }})

        state = self.hass.states.get('input_number.test_default_slider')
        assert state
        assert 'slider' == state.attributes['mode']

        state = self.hass.states.get('input_number.test_explicit_box')
        assert state
        assert 'box' == state.attributes['mode']

        state = self.hass.states.get('input_number.test_explicit_slider')
        assert state
        assert 'slider' == state.attributes['mode']


@asyncio.coroutine
def test_restore_state(hass):
    """Ensure states are restored on startup."""
    mock_restore_cache(hass, (
        State('input_number.b1', '70'),
        State('input_number.b2', '200'),
    ))

    hass.state = CoreState.starting

    yield from async_setup_component(hass, DOMAIN, {
        DOMAIN: {
            'b1': {
                'min': 0,
                'max': 100,
            },
            'b2': {
                'min': 10,
                'max': 100,
            },
        }})

    state = hass.states.get('input_number.b1')
    assert state
    assert float(state.state) == 70

    state = hass.states.get('input_number.b2')
    assert state
    assert float(state.state) == 10


@asyncio.coroutine
def test_initial_state_overrules_restore_state(hass):
    """Ensure states are restored on startup."""
    mock_restore_cache(hass, (
        State('input_number.b1', '70'),
        State('input_number.b2', '200'),
    ))

    hass.state = CoreState.starting

    yield from async_setup_component(hass, DOMAIN, {
        DOMAIN: {
            'b1': {
                'initial': 50,
                'min': 0,
                'max': 100,
            },
            'b2': {
                'initial': 60,
                'min': 0,
                'max': 100,
            },
        }})

    state = hass.states.get('input_number.b1')
    assert state
    assert float(state.state) == 50

    state = hass.states.get('input_number.b2')
    assert state
    assert float(state.state) == 60


@asyncio.coroutine
def test_no_initial_state_and_no_restore_state(hass):
    """Ensure that entity is create without initial and restore feature."""
    hass.state = CoreState.starting

    yield from async_setup_component(hass, DOMAIN, {
        DOMAIN: {
            'b1': {
                'min': 0,
                'max': 100,
            },
        }})

    state = hass.states.get('input_number.b1')
    assert state
    assert float(state.state) == 0


async def test_input_number_context(hass):
    """Test that input_number context works."""
    assert await async_setup_component(hass, 'input_number', {
        'input_number': {
            'b1': {
                'min': 0,
                'max': 100,
            },
        }
    })

    state = hass.states.get('input_number.b1')
    assert state is not None

    await hass.services.async_call('input_number', 'increment', {
        'entity_id': state.entity_id,
    }, True, Context(user_id='abcd'))

    state2 = hass.states.get('input_number.b1')
    assert state2 is not None
    assert state.state != state2.state
    assert state2.context.user_id == 'abcd'