"""The tests for the Picnic sensor platform."""
import copy
from datetime import timedelta
import unittest
from unittest.mock import patch

import pytest
import requests

from homeassistant import config_entries
from homeassistant.components.picnic import const
from homeassistant.components.picnic.const import CONF_COUNTRY_CODE, SENSOR_TYPES
from homeassistant.const import (
    CONF_ACCESS_TOKEN,
    CURRENCY_EURO,
    DEVICE_CLASS_TIMESTAMP,
    STATE_UNAVAILABLE,
)
from homeassistant.util import dt

from tests.common import (
    MockConfigEntry,
    async_fire_time_changed,
    async_test_home_assistant,
)

DEFAULT_USER_RESPONSE = {
    "user_id": "295-6y3-1nf4",
    "firstname": "User",
    "lastname": "Name",
    "address": {
        "house_number": 123,
        "house_number_ext": "a",
        "postcode": "4321 AB",
        "street": "Commonstreet",
        "city": "Somewhere",
    },
    "total_deliveries": 123,
    "completed_deliveries": 112,
}
DEFAULT_CART_RESPONSE = {
    "items": [],
    "delivery_slots": [
        {
            "slot_id": "611a3b074872b23576bef456a",
            "window_start": "2021-03-03T14:45:00.000+01:00",
            "window_end": "2021-03-03T15:45:00.000+01:00",
            "cut_off_time": "2021-03-02T22:00:00.000+01:00",
            "minimum_order_value": 3500,
        },
    ],
    "selected_slot": {"slot_id": "611a3b074872b23576bef456a", "state": "EXPLICIT"},
    "total_count": 10,
    "total_price": 2535,
}
DEFAULT_DELIVERY_RESPONSE = {
    "delivery_id": "z28fjso23e",
    "creation_time": "2021-02-24T21:48:46.395+01:00",
    "slot": {
        "slot_id": "602473859a40dc24c6b65879",
        "hub_id": "AMS",
        "window_start": "2021-02-26T20:15:00.000+01:00",
        "window_end": "2021-02-26T21:15:00.000+01:00",
        "cut_off_time": "2021-02-25T22:00:00.000+01:00",
        "minimum_order_value": 3500,
    },
    "eta2": {
        "start": "2021-02-26T20:54:00.000+01:00",
        "end": "2021-02-26T21:14:00.000+01:00",
    },
    "status": "COMPLETED",
    "delivery_time": {
        "start": "2021-02-26T20:54:05.221+01:00",
        "end": "2021-02-26T20:58:31.802+01:00",
    },
    "orders": [
        {
            "creation_time": "2021-02-24T21:48:46.418+01:00",
            "total_price": 3597,
        },
        {
            "creation_time": "2021-02-25T17:10:26.816+01:00",
            "total_price": 536,
        },
    ],
}

SENSOR_KEYS = [desc.key for desc in SENSOR_TYPES]


@pytest.mark.usefixtures("hass_storage")
class TestPicnicSensor(unittest.IsolatedAsyncioTestCase):
    """Test the Picnic sensor."""

    async def asyncSetUp(self):
        """Set up things to be run when tests are started."""
        self.hass = await async_test_home_assistant(None)
        self.entity_registry = (
            await self.hass.helpers.entity_registry.async_get_registry()
        )

        # Patch the api client
        self.picnic_patcher = patch("homeassistant.components.picnic.PicnicAPI")
        self.picnic_mock = self.picnic_patcher.start()

        # Add a config entry and setup the integration
        config_data = {
            CONF_ACCESS_TOKEN: "x-original-picnic-auth-token",
            CONF_COUNTRY_CODE: "NL",
        }
        self.config_entry = MockConfigEntry(
            domain=const.DOMAIN,
            data=config_data,
            unique_id="295-6y3-1nf4",
        )
        self.config_entry.add_to_hass(self.hass)

    async def asyncTearDown(self):
        """Tear down the test setup, stop hass/patchers."""
        await self.hass.async_stop(force=True)
        self.picnic_patcher.stop()

    @property
    def _coordinator(self):
        return self.hass.data[const.DOMAIN][self.config_entry.entry_id][
            const.CONF_COORDINATOR
        ]

    def _assert_sensor(self, name, state=None, cls=None, unit=None, disabled=False):
        sensor = self.hass.states.get(name)
        if disabled:
            assert sensor is None
            return

        assert sensor.state == state
        if cls:
            assert sensor.attributes["device_class"] == cls
        if unit:
            assert sensor.attributes["unit_of_measurement"] == unit

    async def _setup_platform(
        self, use_default_responses=False, enable_all_sensors=True
    ):
        """Set up the Picnic sensor platform."""
        if use_default_responses:
            self.picnic_mock().get_user.return_value = copy.deepcopy(
                DEFAULT_USER_RESPONSE
            )
            self.picnic_mock().get_cart.return_value = copy.deepcopy(
                DEFAULT_CART_RESPONSE
            )
            self.picnic_mock().get_deliveries.return_value = [
                copy.deepcopy(DEFAULT_DELIVERY_RESPONSE)
            ]
            self.picnic_mock().get_delivery_position.return_value = {}

        await self.hass.config_entries.async_setup(self.config_entry.entry_id)
        await self.hass.async_block_till_done()

        if enable_all_sensors:
            await self._enable_all_sensors()

    async def _enable_all_sensors(self):
        """Enable all sensors of the Picnic integration."""
        # Enable the sensors
        for sensor_type in SENSOR_KEYS:
            updated_entry = self.entity_registry.async_update_entity(
                f"sensor.picnic_{sensor_type}", disabled_by=None
            )
            assert updated_entry.disabled is False
        await self.hass.async_block_till_done()

        # Trigger a reload of the data
        async_fire_time_changed(
            self.hass,
            dt.utcnow()
            + timedelta(seconds=config_entries.RELOAD_AFTER_UPDATE_DELAY + 1),
        )
        await self.hass.async_block_till_done()

    async def test_sensor_setup_platform_not_available(self):
        """Test the set-up of the sensor platform if API is not available."""
        # Configure mock requests to yield exceptions
        self.picnic_mock().get_user.side_effect = requests.exceptions.ConnectionError
        self.picnic_mock().get_cart.side_effect = requests.exceptions.ConnectionError
        self.picnic_mock().get_deliveries.side_effect = (
            requests.exceptions.ConnectionError
        )
        self.picnic_mock().get_delivery_position.side_effect = (
            requests.exceptions.ConnectionError
        )
        await self._setup_platform(enable_all_sensors=False)

        # Assert that sensors are not set up
        assert (
            self.hass.states.get("sensor.picnic_selected_slot_max_order_time") is None
        )
        assert self.hass.states.get("sensor.picnic_last_order_status") is None
        assert self.hass.states.get("sensor.picnic_last_order_total_price") is None

    async def test_sensors_setup(self):
        """Test the default sensor setup behaviour."""
        await self._setup_platform(use_default_responses=True)

        self._assert_sensor("sensor.picnic_cart_items_count", "10")
        self._assert_sensor(
            "sensor.picnic_cart_total_price", "25.35", unit=CURRENCY_EURO
        )
        self._assert_sensor(
            "sensor.picnic_selected_slot_start",
            "2021-03-03T14:45:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_selected_slot_end",
            "2021-03-03T15:45:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_selected_slot_max_order_time",
            "2021-03-02T22:00:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor("sensor.picnic_selected_slot_min_order_value", "35.0")
        self._assert_sensor(
            "sensor.picnic_last_order_slot_start",
            "2021-02-26T20:15:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_last_order_slot_end",
            "2021-02-26T21:15:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor("sensor.picnic_last_order_status", "COMPLETED")
        self._assert_sensor(
            "sensor.picnic_last_order_eta_start",
            "2021-02-26T20:54:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_last_order_eta_end",
            "2021-02-26T21:14:00.000+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_last_order_delivery_time",
            "2021-02-26T20:54:05.221+01:00",
            cls=DEVICE_CLASS_TIMESTAMP,
        )
        self._assert_sensor(
            "sensor.picnic_last_order_total_price", "41.33", unit=CURRENCY_EURO
        )

    async def test_sensors_setup_disabled_by_default(self):
        """Test that some sensors are disabled by default."""
        await self._setup_platform(use_default_responses=True, enable_all_sensors=False)

        self._assert_sensor("sensor.picnic_cart_items_count", disabled=True)
        self._assert_sensor("sensor.picnic_last_order_slot_start", disabled=True)
        self._assert_sensor("sensor.picnic_last_order_slot_end", disabled=True)
        self._assert_sensor("sensor.picnic_last_order_status", disabled=True)
        self._assert_sensor("sensor.picnic_last_order_total_price", disabled=True)

    async def test_sensors_no_selected_time_slot(self):
        """Test sensor states with no explicit selected time slot."""
        # Adjust cart response
        cart_response = copy.deepcopy(DEFAULT_CART_RESPONSE)
        cart_response["selected_slot"]["state"] = "IMPLICIT"

        # Set mock responses
        self.picnic_mock().get_user.return_value = copy.deepcopy(DEFAULT_USER_RESPONSE)
        self.picnic_mock().get_cart.return_value = cart_response
        self.picnic_mock().get_deliveries.return_value = [
            copy.deepcopy(DEFAULT_DELIVERY_RESPONSE)
        ]
        self.picnic_mock().get_delivery_position.return_value = {}
        await self._setup_platform()

        # Assert sensors are unknown
        self._assert_sensor("sensor.picnic_selected_slot_start", STATE_UNAVAILABLE)
        self._assert_sensor("sensor.picnic_selected_slot_end", STATE_UNAVAILABLE)
        self._assert_sensor(
            "sensor.picnic_selected_slot_max_order_time", STATE_UNAVAILABLE
        )
        self._assert_sensor(
            "sensor.picnic_selected_slot_min_order_value", STATE_UNAVAILABLE
        )

    async def test_sensors_last_order_in_future(self):
        """Test sensor states when last order is not yet delivered."""
        # Adjust default delivery response
        delivery_response = copy.deepcopy(DEFAULT_DELIVERY_RESPONSE)
        del delivery_response["delivery_time"]

        # Set mock responses
        self.picnic_mock().get_user.return_value = copy.deepcopy(DEFAULT_USER_RESPONSE)
        self.picnic_mock().get_cart.return_value = copy.deepcopy(DEFAULT_CART_RESPONSE)
        self.picnic_mock().get_deliveries.return_value = [delivery_response]
        self.picnic_mock().get_delivery_position.return_value = {}
        await self._setup_platform()

        # Assert delivery time is not available, but eta is
        self._assert_sensor("sensor.picnic_last_order_delivery_time", STATE_UNAVAILABLE)
        self._assert_sensor(
            "sensor.picnic_last_order_eta_start", "2021-02-26T20:54:00.000+01:00"
        )
        self._assert_sensor(
            "sensor.picnic_last_order_eta_end", "2021-02-26T21:14:00.000+01:00"
        )

    async def test_sensors_use_detailed_eta_if_available(self):
        """Test sensor states when last order is not yet delivered."""
        # Set-up platform with default mock responses
        await self._setup_platform(use_default_responses=True)

        # Provide a delivery position response with different ETA and remove delivery time from response
        delivery_response = copy.deepcopy(DEFAULT_DELIVERY_RESPONSE)
        del delivery_response["delivery_time"]
        self.picnic_mock().get_deliveries.return_value = [delivery_response]
        self.picnic_mock().get_delivery_position.return_value = {
            "eta_window": {
                "start": "2021-03-05T11:19:20.452+01:00",
                "end": "2021-03-05T11:39:20.452+01:00",
            }
        }
        await self._coordinator.async_refresh()

        # Assert detailed ETA is used
        self.picnic_mock().get_delivery_position.assert_called_with(
            delivery_response["delivery_id"]
        )
        self._assert_sensor(
            "sensor.picnic_last_order_eta_start", "2021-03-05T11:19:20.452+01:00"
        )
        self._assert_sensor(
            "sensor.picnic_last_order_eta_end", "2021-03-05T11:39:20.452+01:00"
        )

    async def test_sensors_no_data(self):
        """Test sensor states when the api only returns empty objects."""
        # Setup platform with default responses
        await self._setup_platform(use_default_responses=True)

        # Change mock responses to empty data and refresh the coordinator
        self.picnic_mock().get_user.return_value = {}
        self.picnic_mock().get_cart.return_value = None
        self.picnic_mock().get_deliveries.return_value = None
        self.picnic_mock().get_delivery_position.side_effect = ValueError
        await self._coordinator.async_refresh()

        # Assert all default-enabled sensors have STATE_UNAVAILABLE because the last update failed
        assert self._coordinator.last_update_success is False
        self._assert_sensor("sensor.picnic_cart_total_price", STATE_UNAVAILABLE)
        self._assert_sensor("sensor.picnic_selected_slot_start", STATE_UNAVAILABLE)
        self._assert_sensor("sensor.picnic_selected_slot_end", STATE_UNAVAILABLE)
        self._assert_sensor(
            "sensor.picnic_selected_slot_max_order_time", STATE_UNAVAILABLE
        )
        self._assert_sensor(
            "sensor.picnic_selected_slot_min_order_value", STATE_UNAVAILABLE
        )
        self._assert_sensor("sensor.picnic_last_order_eta_start", STATE_UNAVAILABLE)
        self._assert_sensor("sensor.picnic_last_order_eta_end", STATE_UNAVAILABLE)
        self._assert_sensor("sensor.picnic_last_order_delivery_time", STATE_UNAVAILABLE)

    async def test_sensors_malformed_response(self):
        """Test coordinator update fails when API yields ValueError."""
        # Setup platform with default responses
        await self._setup_platform(use_default_responses=True)

        # Change mock responses to empty data and refresh the coordinator
        self.picnic_mock().get_user.side_effect = ValueError
        self.picnic_mock().get_cart.side_effect = ValueError
        await self._coordinator.async_refresh()

        # Assert coordinator update failed
        assert self._coordinator.last_update_success is False

    async def test_device_registry_entry(self):
        """Test if device registry entry is populated correctly."""
        # Setup platform and default mock responses
        await self._setup_platform(use_default_responses=True)

        device_registry = await self.hass.helpers.device_registry.async_get_registry()
        picnic_service = device_registry.async_get_device(
            identifiers={(const.DOMAIN, DEFAULT_USER_RESPONSE["user_id"])}
        )
        assert picnic_service.model == DEFAULT_USER_RESPONSE["user_id"]
        assert picnic_service.name == "Picnic: Commonstreet 123a"
        assert picnic_service.entry_type == "service"

    async def test_auth_token_is_saved_on_update(self):
        """Test that auth-token changes in the session object are reflected by the config entry."""
        # Setup platform and default mock responses
        await self._setup_platform(use_default_responses=True)

        # Set a different auth token in the session mock
        updated_auth_token = "x-updated-picnic-auth-token"
        self.picnic_mock().session.auth_token = updated_auth_token

        # Verify the updated auth token is not set and fetch data using the coordinator
        assert self.config_entry.data.get(CONF_ACCESS_TOKEN) != updated_auth_token
        await self._coordinator.async_refresh()

        # Verify that the updated auth token is saved in the config entry
        assert self.config_entry.data.get(CONF_ACCESS_TOKEN) == updated_auth_token
