"""
tests.remote
~~~~~~~~~~~~~~

Tests Home Assistant remote methods and classes.
Uses port 8122 for master, 8123 for slave
Uses port 8125 as a port that nothing runs on
"""
# pylint: disable=protected-access,too-many-public-methods
import unittest
from unittest.mock import patch

import homeassistant.core as ha
import homeassistant.bootstrap as bootstrap
import homeassistant.remote as remote
import homeassistant.components.http as http
from homeassistant.const import HTTP_HEADER_HA_AUTH

API_PASSWORD = "test1234"

HTTP_BASE_URL = "http://127.0.0.1:8122"

HA_HEADERS = {HTTP_HEADER_HA_AUTH: API_PASSWORD}

hass, slave, master_api, broken_api = None, None, None, None


def _url(path=""):
    """ Helper method to generate urls. """
    return HTTP_BASE_URL + path


@patch('homeassistant.components.http.util.get_local_ip',
       return_value='127.0.0.1')
def setUpModule(mock_get_local_ip):   # pylint: disable=invalid-name
    """ Initalizes a Home Assistant server and Slave instance. """
    global hass, slave, master_api, broken_api

    hass = ha.HomeAssistant()

    hass.bus.listen('test_event', lambda _: _)
    hass.states.set('test.test', 'a_state')

    bootstrap.setup_component(
        hass, http.DOMAIN,
        {http.DOMAIN: {http.CONF_API_PASSWORD: API_PASSWORD,
         http.CONF_SERVER_PORT: 8122}})

    bootstrap.setup_component(hass, 'api')

    hass.start()

    master_api = remote.API("127.0.0.1", API_PASSWORD, 8122)

    # Start slave
    slave = remote.HomeAssistant(master_api)
    bootstrap.setup_component(
        slave, http.DOMAIN,
        {http.DOMAIN: {http.CONF_API_PASSWORD: API_PASSWORD,
         http.CONF_SERVER_PORT: 8130}})

    slave.start()

    # Setup API pointing at nothing
    broken_api = remote.API("127.0.0.1", "", 8125)


def tearDownModule():   # pylint: disable=invalid-name
    """ Stops the Home Assistant server and slave. """
    global hass, slave

    slave.stop()
    hass.stop()


class TestRemoteMethods(unittest.TestCase):
    """ Test the homeassistant.remote module. """

    def test_validate_api(self):
        """ Test Python API validate_api. """
        self.assertEqual(remote.APIStatus.OK, remote.validate_api(master_api))

        self.assertEqual(
            remote.APIStatus.INVALID_PASSWORD,
            remote.validate_api(
                remote.API("127.0.0.1", API_PASSWORD + "A", 8122)))

        self.assertEqual(
            remote.APIStatus.CANNOT_CONNECT, remote.validate_api(broken_api))

    def test_get_event_listeners(self):
        """ Test Python API get_event_listeners. """
        local_data = hass.bus.listeners
        remote_data = remote.get_event_listeners(master_api)

        for event in remote_data:
            self.assertEqual(local_data.pop(event["event"]),
                             event["listener_count"])

        self.assertEqual(len(local_data), 0)

        self.assertEqual({}, remote.get_event_listeners(broken_api))

    def test_fire_event(self):
        """ Test Python API fire_event. """
        test_value = []

        def listener(event):
            """ Helper method that will verify our event got called. """
            test_value.append(1)

        hass.bus.listen_once("test.event_no_data", listener)

        remote.fire_event(master_api, "test.event_no_data")

        hass.pool.block_till_done()

        self.assertEqual(1, len(test_value))

        # Should not trigger any exception
        remote.fire_event(broken_api, "test.event_no_data")

    def test_get_state(self):
        """ Test Python API get_state. """

        self.assertEqual(
            hass.states.get('test.test'),
            remote.get_state(master_api, 'test.test'))

        self.assertEqual(None, remote.get_state(broken_api, 'test.test'))

    def test_get_states(self):
        """ Test Python API get_state_entity_ids. """

        self.assertEqual(hass.states.all(), remote.get_states(master_api))
        self.assertEqual([], remote.get_states(broken_api))

    def test_set_state(self):
        """ Test Python API set_state. """
        hass.states.set('test.test', 'set_test')

        state = hass.states.get('test.test')

        self.assertIsNotNone(state)
        self.assertEqual('set_test', state.state)

        self.assertFalse(remote.set_state(broken_api, 'test.test', 'set_test'))

    def test_is_state(self):
        """ Test Python API is_state. """

        self.assertTrue(
            remote.is_state(master_api, 'test.test',
                            hass.states.get('test.test').state))

        self.assertFalse(
            remote.is_state(broken_api, 'test.test',
                            hass.states.get('test.test').state))

    def test_get_services(self):
        """ Test Python API get_services. """

        local_services = hass.services.services

        for serv_domain in remote.get_services(master_api):
            local = local_services.pop(serv_domain["domain"])

            self.assertEqual(local, serv_domain["services"])

        self.assertEqual({}, remote.get_services(broken_api))

    def test_call_service(self):
        """ Test Python API services.call. """
        test_value = []

        def listener(service_call):
            """ Helper method that will verify that our service got called. """
            test_value.append(1)

        hass.services.register("test_domain", "test_service", listener)

        remote.call_service(master_api, "test_domain", "test_service")

        hass.pool.block_till_done()

        self.assertEqual(1, len(test_value))

        # Should not raise an exception
        remote.call_service(broken_api, "test_domain", "test_service")


class TestRemoteClasses(unittest.TestCase):
    """ Test the homeassistant.remote module. """

    def test_home_assistant_init(self):
        """ Test HomeAssistant init. """
        # Wrong password
        self.assertRaises(
            ha.HomeAssistantError, remote.HomeAssistant,
            remote.API('127.0.0.1', API_PASSWORD + 'A', 8124))

        # Wrong port
        self.assertRaises(
            ha.HomeAssistantError, remote.HomeAssistant,
            remote.API('127.0.0.1', API_PASSWORD, 8125))

    def test_statemachine_init(self):
        """ Tests if remote.StateMachine copies all states on init. """
        self.assertEqual(len(hass.states.all()),
                         len(slave.states.all()))

        for state in hass.states.all():
            self.assertEqual(
                state, slave.states.get(state.entity_id))

    def test_statemachine_set(self):
        """ Tests if setting the state on a slave is recorded. """
        slave.states.set("remote.test", "remote.statemachine test")

        # Wait till slave tells master
        slave.pool.block_till_done()
        # Wait till master gives updated state
        hass.pool.block_till_done()

        self.assertEqual("remote.statemachine test",
                         slave.states.get("remote.test").state)

    def test_eventbus_fire(self):
        """ Test if events fired from the eventbus get fired. """
        test_value = []

        def listener(event):
            """ Helper method that will verify our event got called. """
            test_value.append(1)

        slave.bus.listen_once("test.event_no_data", listener)

        slave.bus.fire("test.event_no_data")

        # Wait till slave tells master
        slave.pool.block_till_done()
        # Wait till master gives updated event
        hass.pool.block_till_done()

        self.assertEqual(1, len(test_value))

    def test_json_encoder(self):
        """ Test the JSON Encoder. """
        ha_json_enc = remote.JSONEncoder()
        state = hass.states.get('test.test')

        self.assertEqual(state.as_dict(), ha_json_enc.default(state))

        # Default method raises TypeError if non HA object
        self.assertRaises(TypeError, ha_json_enc.default, 1)