117 lines
3.4 KiB
Python
117 lines
3.4 KiB
Python
"""Support for currencylayer.com exchange rates service."""
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from __future__ import annotations
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from datetime import timedelta
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import logging
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import requests
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import voluptuous as vol
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from homeassistant.components.sensor import (
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PLATFORM_SCHEMA as SENSOR_PLATFORM_SCHEMA,
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SensorEntity,
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)
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from homeassistant.const import CONF_API_KEY, CONF_BASE, CONF_NAME, CONF_QUOTE
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from homeassistant.core import HomeAssistant
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity_platform import AddEntitiesCallback
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from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
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_LOGGER = logging.getLogger(__name__)
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_RESOURCE = "http://apilayer.net/api/live"
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DEFAULT_BASE = "USD"
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DEFAULT_NAME = "CurrencyLayer Sensor"
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SCAN_INTERVAL = timedelta(hours=4)
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PLATFORM_SCHEMA = SENSOR_PLATFORM_SCHEMA.extend(
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{
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vol.Required(CONF_API_KEY): cv.string,
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vol.Required(CONF_QUOTE): vol.All(cv.ensure_list, [cv.string]),
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vol.Optional(CONF_BASE, default=DEFAULT_BASE): cv.string,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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}
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)
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def setup_platform(
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hass: HomeAssistant,
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config: ConfigType,
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add_entities: AddEntitiesCallback,
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discovery_info: DiscoveryInfoType | None = None,
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) -> None:
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"""Set up the Currencylayer sensor."""
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base = config[CONF_BASE]
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api_key = config[CONF_API_KEY]
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parameters = {"source": base, "access_key": api_key, "format": 1}
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rest = CurrencylayerData(_RESOURCE, parameters)
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response = requests.get(_RESOURCE, params=parameters, timeout=10)
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if "error" in response.json():
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return
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add_entities(
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(CurrencylayerSensor(rest, base, variable) for variable in config[CONF_QUOTE]),
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True,
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)
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class CurrencylayerSensor(SensorEntity):
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"""Implementing the Currencylayer sensor."""
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_attr_attribution = "Data provided by currencylayer.com"
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_attr_icon = "mdi:currency"
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def __init__(self, rest, base, quote):
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"""Initialize the sensor."""
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self.rest = rest
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self._quote = quote
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self._base = base
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self._state = None
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@property
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def native_unit_of_measurement(self):
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"""Return the unit of measurement of this entity, if any."""
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return self._quote
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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 self._base
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@property
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def native_value(self):
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"""Return the state of the sensor."""
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return self._state
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def update(self) -> None:
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"""Update current date."""
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self.rest.update()
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if (value := self.rest.data) is not None:
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self._state = round(value[f"{self._base}{self._quote}"], 4)
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class CurrencylayerData:
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"""Get data from Currencylayer.org."""
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def __init__(self, resource, parameters):
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"""Initialize the data object."""
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self._resource = resource
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self._parameters = parameters
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self.data = None
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def update(self):
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"""Get the latest data from Currencylayer."""
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try:
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result = requests.get(self._resource, params=self._parameters, timeout=10)
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if "error" in result.json():
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raise ValueError(result.json()["error"]["info"])
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self.data = result.json()["quotes"]
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_LOGGER.debug("Currencylayer data updated: %s", result.json()["timestamp"])
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except ValueError as err:
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_LOGGER.error("Check Currencylayer API %s", err.args)
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self.data = None
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