mirror of https://github.com/home-assistant/core
121 lines
3.4 KiB
Python
121 lines
3.4 KiB
Python
"""Currency exchange rate support that comes from fixer.io."""
|
|
|
|
from __future__ import annotations
|
|
|
|
from datetime import timedelta
|
|
import logging
|
|
from typing import Any
|
|
|
|
from fixerio import Fixerio
|
|
from fixerio.exceptions import FixerioException
|
|
import voluptuous as vol
|
|
|
|
from homeassistant.components.sensor import (
|
|
PLATFORM_SCHEMA as SENSOR_PLATFORM_SCHEMA,
|
|
SensorEntity,
|
|
)
|
|
from homeassistant.const import CONF_API_KEY, CONF_NAME, CONF_TARGET
|
|
from homeassistant.core import HomeAssistant
|
|
import homeassistant.helpers.config_validation as cv
|
|
from homeassistant.helpers.entity_platform import AddEntitiesCallback
|
|
from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
|
|
|
|
_LOGGER = logging.getLogger(__name__)
|
|
|
|
ATTR_EXCHANGE_RATE = "Exchange rate"
|
|
ATTR_TARGET = "Target currency"
|
|
|
|
DEFAULT_BASE = "USD"
|
|
DEFAULT_NAME = "Exchange rate"
|
|
|
|
|
|
SCAN_INTERVAL = timedelta(days=1)
|
|
|
|
PLATFORM_SCHEMA = SENSOR_PLATFORM_SCHEMA.extend(
|
|
{
|
|
vol.Required(CONF_API_KEY): cv.string,
|
|
vol.Required(CONF_TARGET): cv.string,
|
|
vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
|
|
}
|
|
)
|
|
|
|
|
|
def setup_platform(
|
|
hass: HomeAssistant,
|
|
config: ConfigType,
|
|
add_entities: AddEntitiesCallback,
|
|
discovery_info: DiscoveryInfoType | None = None,
|
|
) -> None:
|
|
"""Set up the Fixer.io sensor."""
|
|
api_key = config.get(CONF_API_KEY)
|
|
name = config.get(CONF_NAME)
|
|
target = config.get(CONF_TARGET)
|
|
|
|
try:
|
|
Fixerio(symbols=[target], access_key=api_key).latest()
|
|
except FixerioException:
|
|
_LOGGER.error("One of the given currencies is not supported")
|
|
return
|
|
|
|
data = ExchangeData(target, api_key)
|
|
add_entities([ExchangeRateSensor(data, name, target)], True)
|
|
|
|
|
|
class ExchangeRateSensor(SensorEntity):
|
|
"""Representation of a Exchange sensor."""
|
|
|
|
_attr_attribution = "Data provided by the European Central Bank (ECB)"
|
|
_attr_icon = "mdi:currency-usd"
|
|
|
|
def __init__(self, data, name, target):
|
|
"""Initialize the sensor."""
|
|
self.data = data
|
|
self._target = target
|
|
self._name = name
|
|
self._state = None
|
|
|
|
@property
|
|
def name(self):
|
|
"""Return the name of the sensor."""
|
|
return self._name
|
|
|
|
@property
|
|
def native_unit_of_measurement(self):
|
|
"""Return the unit of measurement of this entity, if any."""
|
|
return self._target
|
|
|
|
@property
|
|
def native_value(self):
|
|
"""Return the state of the sensor."""
|
|
return self._state
|
|
|
|
@property
|
|
def extra_state_attributes(self) -> dict[str, Any] | None:
|
|
"""Return the state attributes."""
|
|
if self.data.rate is not None:
|
|
return {
|
|
ATTR_EXCHANGE_RATE: self.data.rate["rates"][self._target],
|
|
ATTR_TARGET: self._target,
|
|
}
|
|
return None
|
|
|
|
def update(self) -> None:
|
|
"""Get the latest data and updates the states."""
|
|
self.data.update()
|
|
self._state = round(self.data.rate["rates"][self._target], 3)
|
|
|
|
|
|
class ExchangeData:
|
|
"""Get the latest data and update the states."""
|
|
|
|
def __init__(self, target_currency, api_key):
|
|
"""Initialize the data object."""
|
|
self.api_key = api_key
|
|
self.rate = None
|
|
self.target_currency = target_currency
|
|
self.exchange = Fixerio(symbols=[self.target_currency], access_key=self.api_key)
|
|
|
|
def update(self):
|
|
"""Get the latest data from Fixer.io."""
|
|
self.rate = self.exchange.latest()
|