123 lines
3.6 KiB
Python
123 lines
3.6 KiB
Python
"""
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Support for UK Met Office weather service.
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/weather.metoffice/
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"""
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import logging
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import voluptuous as vol
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from homeassistant.components.weather import WeatherEntity, PLATFORM_SCHEMA
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from homeassistant.const import (
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CONF_NAME, TEMP_CELSIUS, CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE)
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from homeassistant.helpers import config_validation as cv
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# Reuse data and API logic from the sensor implementation
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from homeassistant.components.sensor.metoffice import \
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MetOfficeCurrentData, CONF_ATTRIBUTION, CONDITION_CLASSES
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_LOGGER = logging.getLogger(__name__)
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REQUIREMENTS = ['datapoint==0.4.3']
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Optional(CONF_NAME): cv.string,
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vol.Required(CONF_API_KEY): cv.string,
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})
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Set up the Met Office weather platform."""
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import datapoint as dp
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datapoint = dp.connection(api_key=config.get(CONF_API_KEY))
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latitude = config.get(CONF_LATITUDE, hass.config.latitude)
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longitude = config.get(CONF_LONGITUDE, hass.config.longitude)
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if None in (latitude, longitude):
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_LOGGER.error("Latitude or longitude not set in Home Assistant config")
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return False
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try:
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site = datapoint.get_nearest_site(latitude=latitude,
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longitude=longitude)
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except dp.exceptions.APIException as err:
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_LOGGER.error("Received error from Met Office Datapoint: %s", err)
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return False
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if not site:
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_LOGGER.error("Unable to get nearest Met Office forecast site")
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return False
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# Get data
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data = MetOfficeCurrentData(hass, datapoint, site)
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try:
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data.update()
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except (ValueError, dp.exceptions.APIException) as err:
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_LOGGER.error("Received error from Met Office Datapoint: %s", err)
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return False
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add_devices([MetOfficeWeather(site, data, config.get(CONF_NAME))],
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True)
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return True
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class MetOfficeWeather(WeatherEntity):
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"""Implementation of a Met Office weather condition."""
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def __init__(self, site, data, config):
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"""Initialise the platform with a data instance and site."""
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self.data = data
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self.site = site
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def update(self):
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"""Update current conditions."""
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self.data.update()
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@property
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def name(self):
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"""Return the name of the sensor."""
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return 'Met Office ({})'.format(self.site.name)
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@property
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def condition(self):
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"""Return the current condition."""
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return [k for k, v in CONDITION_CLASSES.items() if
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self.data.data.weather.value in v][0]
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# Now implement the WeatherEntity interface
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@property
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def temperature(self):
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"""Return the platform temperature."""
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return self.data.data.temperature.value
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@property
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def temperature_unit(self):
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"""Return the unit of measurement."""
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return TEMP_CELSIUS
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@property
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def pressure(self):
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"""Return the mean sea-level pressure."""
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return None
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@property
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def humidity(self):
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"""Return the relative humidity."""
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return self.data.data.humidity.value
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@property
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def wind_speed(self):
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"""Return the wind speed."""
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return self.data.data.wind_speed.value
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@property
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def wind_bearing(self):
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"""Return the wind bearing."""
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return self.data.data.wind_direction.value
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@property
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def attribution(self):
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"""Return the attribution."""
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return CONF_ATTRIBUTION
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