"""The tests for the timer component."""
# pylint: disable=protected-access
import asyncio
from datetime import timedelta
import logging

from homeassistant.components.timer import (
    ATTR_DURATION,
    CONF_DURATION,
    CONF_ICON,
    CONF_NAME,
    DOMAIN,
    EVENT_TIMER_CANCELLED,
    EVENT_TIMER_FINISHED,
    EVENT_TIMER_PAUSED,
    EVENT_TIMER_RESTARTED,
    EVENT_TIMER_STARTED,
    SERVICE_CANCEL,
    SERVICE_FINISH,
    SERVICE_PAUSE,
    SERVICE_START,
    STATUS_ACTIVE,
    STATUS_IDLE,
    STATUS_PAUSED,
)
from homeassistant.const import ATTR_FRIENDLY_NAME, ATTR_ICON, CONF_ENTITY_ID
from homeassistant.core import CoreState
from homeassistant.setup import async_setup_component
from homeassistant.util.dt import utcnow

from tests.common import async_fire_time_changed

_LOGGER = logging.getLogger(__name__)


async def test_config(hass):
    """Test config."""
    invalid_configs = [None, 1, {}, {"name with space": None}]

    for cfg in invalid_configs:
        assert not await async_setup_component(hass, DOMAIN, {DOMAIN: cfg})


async def test_config_options(hass):
    """Test configuration options."""
    count_start = len(hass.states.async_entity_ids())

    _LOGGER.debug("ENTITIES @ start: %s", hass.states.async_entity_ids())

    config = {
        DOMAIN: {
            "test_1": {},
            "test_2": {
                CONF_NAME: "Hello World",
                CONF_ICON: "mdi:work",
                CONF_DURATION: 10,
            },
        }
    }

    assert await async_setup_component(hass, "timer", config)
    await hass.async_block_till_done()

    assert count_start + 2 == len(hass.states.async_entity_ids())
    await hass.async_block_till_done()

    state_1 = hass.states.get("timer.test_1")
    state_2 = hass.states.get("timer.test_2")

    assert state_1 is not None
    assert state_2 is not None

    assert STATUS_IDLE == state_1.state
    assert ATTR_ICON not in state_1.attributes
    assert ATTR_FRIENDLY_NAME not in state_1.attributes

    assert STATUS_IDLE == state_2.state
    assert "Hello World" == state_2.attributes.get(ATTR_FRIENDLY_NAME)
    assert "mdi:work" == state_2.attributes.get(ATTR_ICON)
    assert "0:00:10" == state_2.attributes.get(ATTR_DURATION)


@asyncio.coroutine
def test_methods_and_events(hass):
    """Test methods and events."""
    hass.state = CoreState.starting

    yield from async_setup_component(
        hass, DOMAIN, {DOMAIN: {"test1": {CONF_DURATION: 10}}}
    )

    state = hass.states.get("timer.test1")
    assert state
    assert state.state == STATUS_IDLE

    results = []

    def fake_event_listener(event):
        """Fake event listener for trigger."""
        results.append(event)

    hass.bus.async_listen(EVENT_TIMER_STARTED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_RESTARTED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_PAUSED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_FINISHED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_CANCELLED, fake_event_listener)

    steps = [
        {"call": SERVICE_START, "state": STATUS_ACTIVE, "event": EVENT_TIMER_STARTED},
        {"call": SERVICE_PAUSE, "state": STATUS_PAUSED, "event": EVENT_TIMER_PAUSED},
        {"call": SERVICE_START, "state": STATUS_ACTIVE, "event": EVENT_TIMER_RESTARTED},
        {"call": SERVICE_CANCEL, "state": STATUS_IDLE, "event": EVENT_TIMER_CANCELLED},
        {"call": SERVICE_START, "state": STATUS_ACTIVE, "event": EVENT_TIMER_STARTED},
        {"call": SERVICE_FINISH, "state": STATUS_IDLE, "event": EVENT_TIMER_FINISHED},
        {"call": SERVICE_START, "state": STATUS_ACTIVE, "event": EVENT_TIMER_STARTED},
        {"call": SERVICE_PAUSE, "state": STATUS_PAUSED, "event": EVENT_TIMER_PAUSED},
        {"call": SERVICE_CANCEL, "state": STATUS_IDLE, "event": EVENT_TIMER_CANCELLED},
    ]

    expectedEvents = 0
    for step in steps:
        if step["call"] is not None:
            yield from hass.services.async_call(
                DOMAIN, step["call"], {CONF_ENTITY_ID: "timer.test1"}
            )
            yield from hass.async_block_till_done()

        state = hass.states.get("timer.test1")
        assert state
        if step["state"] is not None:
            assert state.state == step["state"]

        if step["event"] is not None:
            expectedEvents += 1
            assert results[-1].event_type == step["event"]
            assert len(results) == expectedEvents


@asyncio.coroutine
def test_wait_till_timer_expires(hass):
    """Test for a timer to end."""
    hass.state = CoreState.starting

    yield from async_setup_component(
        hass, DOMAIN, {DOMAIN: {"test1": {CONF_DURATION: 10}}}
    )

    state = hass.states.get("timer.test1")
    assert state
    assert state.state == STATUS_IDLE

    results = []

    def fake_event_listener(event):
        """Fake event listener for trigger."""
        results.append(event)

    hass.bus.async_listen(EVENT_TIMER_STARTED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_PAUSED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_FINISHED, fake_event_listener)
    hass.bus.async_listen(EVENT_TIMER_CANCELLED, fake_event_listener)

    yield from hass.services.async_call(
        DOMAIN, SERVICE_START, {CONF_ENTITY_ID: "timer.test1"}
    )
    yield from hass.async_block_till_done()

    state = hass.states.get("timer.test1")
    assert state
    assert state.state == STATUS_ACTIVE

    assert results[-1].event_type == EVENT_TIMER_STARTED
    assert len(results) == 1

    async_fire_time_changed(hass, utcnow() + timedelta(seconds=10))
    yield from hass.async_block_till_done()

    state = hass.states.get("timer.test1")
    assert state
    assert state.state == STATUS_IDLE

    assert results[-1].event_type == EVENT_TIMER_FINISHED
    assert len(results) == 2


@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: {"test1": {CONF_DURATION: 10}}}
    )

    state = hass.states.get("timer.test1")
    assert state
    assert state.state == STATUS_IDLE