Add Stookalert integration (#30306)

* Added Stookalert integration

* Added Stookalert integration

* Added Stookalert integration

* Solved comments

* Flake8 change

* Bump stookalert to version 1.1.2

* Fixed attributes and state

* Get method for private variables

*  Update to stookalert 0.1.4

* Code optimization

* Update requirements

homeassistant/components/stookalert/binary_sensor.py

@@ -0,0 +1,79 @@
+"""This component provides support for Stookalert Binary Sensor."""
+from datetime import timedelta
+import logging
+
+import stookalert
+import voluptuous as vol
+
+from homeassistant.components.binary_sensor import PLATFORM_SCHEMA, BinarySensorDevice
+from homeassistant.const import ATTR_ATTRIBUTION, CONF_NAME
+from homeassistant.helpers import config_validation as cv
+
+_LOGGER = logging.getLogger(__name__)
+
+SCAN_INTERVAL = timedelta(minutes=60)
+CONF_PROVINCE = "province"
+DEFAULT_NAME = "Stookalert"
+ATTRIBUTION = "Data provided by rivm.nl"
+PROVINCES = [
+    "Drenthe",
+    "Flevoland",
+    "Friesland",
+    "Gelderland",
+    "Groningen",
+    "Limburg",
+    "Noord-Brabant",
+    "Noord-Holland",
+    "Overijssel",
+    "Utrecht",
+    "Zeeland",
+    "Zuid-Holland",
+]
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
+    {
+        vol.Required(CONF_PROVINCE): vol.In(PROVINCES),
+        vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
+    }
+)
+
+
+def setup_platform(hass, config, add_entities, discovery_info=None):
+    """Set up the Stookalert binary sensor platform."""
+    province = config[CONF_PROVINCE]
+    name = config[CONF_NAME]
+    api_handler = stookalert.stookalert(province)
+    add_entities([StookalertBinarySensor(name, api_handler)], update_before_add=True)
+
+
+class StookalertBinarySensor(BinarySensorDevice):
+    """An implementation of RIVM Stookalert."""
+
+    def __init__(self, name, api_handler):
+        """Initialize a Stookalert device."""
+        self._name = name
+        self._api_handler = api_handler
+
+    @property
+    def device_state_attributes(self):
+        """Return the attribute(s) of the sensor."""
+        state_attr = {ATTR_ATTRIBUTION: ATTRIBUTION}
+
+        if self._api_handler.last_updated is not None:
+            state_attr["last_updated"] = self._api_handler.last_updated.isoformat()
+
+        return state_attr
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def is_on(self):
+        """Return True if the Alert is active."""
+        return self._api_handler.state == 1
+
+    def update(self):
+        """Update the data from the Stookalert handler."""
+        self._api_handler.get_alerts()