113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
"""Config flow to configure SMHI component."""
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from smhi.smhi_lib import Smhi, SmhiForecastException
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import voluptuous as vol
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from homeassistant import config_entries
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from homeassistant.const import CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.helpers import aiohttp_client
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import homeassistant.helpers.config_validation as cv
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from homeassistant.util import slugify
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from .const import DOMAIN, HOME_LOCATION_NAME
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@callback
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def smhi_locations(hass: HomeAssistant):
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"""Return configurations of SMHI component."""
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return set(
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(slugify(entry.data[CONF_NAME]))
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for entry in hass.config_entries.async_entries(DOMAIN)
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)
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@config_entries.HANDLERS.register(DOMAIN)
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class SmhiFlowHandler(config_entries.ConfigFlow):
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"""Config flow for SMHI component."""
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VERSION = 1
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CONNECTION_CLASS = config_entries.CONN_CLASS_CLOUD_POLL
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def __init__(self) -> None:
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"""Initialize SMHI forecast configuration flow."""
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self._errors = {}
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async def async_step_user(self, user_input=None):
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"""Handle a flow initialized by the user."""
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self._errors = {}
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if user_input is not None:
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is_ok = await self._check_location(
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user_input[CONF_LONGITUDE], user_input[CONF_LATITUDE]
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)
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if is_ok:
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name = slugify(user_input[CONF_NAME])
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if not self._name_in_configuration_exists(name):
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return self.async_create_entry(
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title=user_input[CONF_NAME], data=user_input
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)
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self._errors[CONF_NAME] = "name_exists"
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else:
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self._errors["base"] = "wrong_location"
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# If hass config has the location set and is a valid coordinate the
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# default location is set as default values in the form
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if not smhi_locations(self.hass):
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if await self._homeassistant_location_exists():
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return await self._show_config_form(
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name=HOME_LOCATION_NAME,
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latitude=self.hass.config.latitude,
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longitude=self.hass.config.longitude,
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)
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return await self._show_config_form()
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async def _homeassistant_location_exists(self) -> bool:
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"""Return true if default location is set and is valid."""
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if self.hass.config.latitude != 0.0 and self.hass.config.longitude != 0.0:
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# Return true if valid location
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if await self._check_location(
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self.hass.config.longitude, self.hass.config.latitude
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):
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return True
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return False
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def _name_in_configuration_exists(self, name: str) -> bool:
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"""Return True if name exists in configuration."""
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if name in smhi_locations(self.hass):
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return True
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return False
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async def _show_config_form(
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self, name: str = None, latitude: str = None, longitude: str = None
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):
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"""Show the configuration form to edit location data."""
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return self.async_show_form(
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step_id="user",
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data_schema=vol.Schema(
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{
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vol.Required(CONF_NAME, default=name): str,
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vol.Required(CONF_LATITUDE, default=latitude): cv.latitude,
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vol.Required(CONF_LONGITUDE, default=longitude): cv.longitude,
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}
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),
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errors=self._errors,
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)
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async def _check_location(self, longitude: str, latitude: str) -> bool:
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"""Return true if location is ok."""
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try:
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session = aiohttp_client.async_get_clientsession(self.hass)
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smhi_api = Smhi(longitude, latitude, session=session)
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await smhi_api.async_get_forecast()
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return True
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except SmhiForecastException:
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# The API will throw an exception if faulty location
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pass
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return False
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