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sensor.py
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sensor.py
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import logging
from datetime import timedelta, datetime
from bs4 import BeautifulSoup
from homeassistant.components.sensor import SensorEntity
from homeassistant.core import callback
from homeassistant.helpers.aiohttp_client import async_get_clientsession
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
from .const import DOMAIN, CONF_URL
from homeassistant.helpers.dispatcher import async_dispatcher_connect, async_dispatcher_send
_LOGGER = logging.getLogger(__name__)
SCAN_INTERVAL = timedelta(hours=6)
async def async_setup_entry(hass, entry, async_add_entities):
"""Set up the sensor from a config entry."""
url = entry.data[CONF_URL]
name = entry.data.get('name', 'Energy Price')
monthly_fee = entry.data.get('monthly_fee', 0.0)
coordinator = DataUpdateCoordinator(
hass,
_LOGGER,
name="sensor",
update_method=lambda: fetch_energy_price(hass, url),
update_interval=SCAN_INTERVAL,
)
# Fetch initial data so we have data when entities subscribe
await coordinator.async_refresh()
# Setup the energy price sensor and the monthly fee sensor
async_add_entities([
EnergyPriceSensor(name, coordinator, entry.entry_id),
MonthlyFeeSensor(name + " Monthly Fee", monthly_fee, entry.entry_id, hass)
], True)
class EnergyPriceSensor(SensorEntity):
"""Representation of a Sensor."""
def __init__(self, name, coordinator, entry_id):
"""Initialize the sensor."""
self._name = name
self.coordinator = coordinator
self._entry_id = entry_id
@property
def unique_id(self):
"""Return a unique ID to use for this sensor."""
return f"{self._entry_id}_energy_price"
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def state(self):
"""Return the state of the sensor."""
return self.coordinator.data
@property
def unit_of_measurement(self):
"""Return the unit of measurement."""
return "EUR/kWh"
@property
def available(self):
"""Return if sensor is available."""
return self.coordinator.last_update_success
@property
def state_class(self):
"""Return the state class of the sensor."""
return 'measurement'
@property
def icon(self):
"""Return the icon to be used for this sensor."""
return "mdi:currency-eur"
async def async_update(self):
"""Update the sensor."""
await self.coordinator.async_request_refresh()
class MonthlyFeeSensor(SensorEntity):
"""Representation of a Monthly Fee Sensor."""
def __init__(self, name, monthly_fee, entry_id, hass):
"""Initialize the monthly fee sensor."""
self._name = name
self._monthly_fee = monthly_fee
self._entry_id = entry_id
self.hass = hass
@property
def unique_id(self):
"""Return a unique ID to use for this sensor."""
return f"{self._entry_id}_monthly_fee"
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def state(self):
"""Return the state of the sensor."""
return self._monthly_fee
@property
def unit_of_measurement(self):
"""Return the unit of measurement."""
return "EUR"
@property
def icon(self):
"""Return the icon to be used for this sensor."""
return "mdi:currency-eur"
async def fetch_energy_price(hass, url):
"""Fetch the energy price from a specific URL using aiohttp."""
session = async_get_clientsession(hass)
try:
async with session.get(url) as response:
response.raise_for_status()
text = await response.text()
soup = BeautifulSoup(text, 'html.parser')
table = soup.find('table', class_='whoplaystable')
if not table:
raise UpdateFailed("Table with class 'whoplaystable' not found.")
rows = table.find_all('tr', class_='linecolor1')
if not rows:
raise UpdateFailed("No rows with class 'linecolor1' found.")
for row in rows:
cells = row.find_all('td', class_='evtd_numeric')
if cells:
struck_text = cells[0].find('s')
if struck_text:
# Remove the struck text from the price if it exists
price_text = cells[0].text.replace(struck_text.text, '').strip()
else:
price_text = cells[0].text.strip()
# Clean the price text and convert it to a float
price_text = price_text.replace('€', '').replace('$', '').replace(',', '.').strip()
try:
price_float = float(price_text)
return price_float
except ValueError:
_LOGGER.error("Non-numeric price data found: %s", price_text)
continue # If non-numeric, continue with next row
raise UpdateFailed("Price data not found in rows")
except Exception as e:
_LOGGER.error(f"Error fetching data from {url}: {str(e)}")
raise UpdateFailed from e