Add Brottsplatskartan sensor (#19018)

* Added brottsplatskartan sensor

* Update brottsplatskartan sensor

* Remove redundant configuration checks.
* Set attributes during initialization.
* Setup brottsplatskartan module in setup_platform().
* Just do a simple return, no need for returning false.

* Remove file that was used during testing

* Better variable name and remove excessive newline.

* More updates to brottsplatskartan

* Import uuid at the top of the module.
* Use sensor as domain.
* Don't fire custom events.
* Remove period from logging message.

* Adding validation for area parameter

* Validate empty area configuration

* Fixing indentation.

* Fixing the config schema

.coveragerc

@@ -698,6 +698,7 @@ omit =
     homeassistant/components/sensor/bme680.py
     homeassistant/components/sensor/bom.py
     homeassistant/components/sensor/broadlink.py
+    homeassistant/components/sensor/brottsplatskartan.py
     homeassistant/components/sensor/buienradar.py
     homeassistant/components/sensor/cert_expiry.py
     homeassistant/components/sensor/citybikes.py

homeassistant/components/sensor/brottsplatskartan.py

@@ -0,0 +1,110 @@
+"""Sensor for Brottsplatskartan."""
+from collections import defaultdict
+from datetime import timedelta
+import logging
+import uuid
+
+import voluptuous as vol
+
+from homeassistant.components.sensor import PLATFORM_SCHEMA
+from homeassistant.const import (
+    ATTR_ATTRIBUTION, CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME)
+import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.entity import Entity
+
+REQUIREMENTS = ['brottsplatskartan==0.0.1']
+
+_LOGGER = logging.getLogger(__name__)
+
+CONF_AREA = 'area'
+DEFAULT_NAME = 'Brottsplatskartan'
+SCAN_INTERVAL = timedelta(minutes=30)
+
+AREAS = [
+    "Blekinge län", "Dalarnas län", "Gotlands län", "Gävleborgs län",
+    "Hallands län", "Jämtlands län", "Jönköpings län", "Kalmar län",
+    "Kronobergs län", "Norrbottens län", "Skåne län", "Stockholms län",
+    "Södermanlands län", "Uppsala län", "Värmlands län", "Västerbottens län",
+    "Västernorrlands län", "Västmanlands län", "Västra Götalands län",
+    "Örebro län", "Östergötlands län"
+]
+
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
+    {
+        vol.Inclusive(CONF_LATITUDE, 'coordinates'): cv.latitude,
+        vol.Inclusive(CONF_LONGITUDE, 'coordinates'): cv.longitude,
+        vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
+        vol.Optional(CONF_AREA, default=[]):
+            vol.All(cv.ensure_list, [vol.In(AREAS)])
+    }
+)
+
+
+def setup_platform(hass, config, add_entities, discovery_info=None):
+    """Set up the Brottsplatskartan platform."""
+    import brottsplatskartan
+    latitude = config.get(CONF_LATITUDE, hass.config.latitude)
+    longitude = config.get(CONF_LONGITUDE, hass.config.longitude)
+    name = config.get(CONF_NAME)
+    area = config.get(CONF_AREA)
+
+    # Every Home Assistant instance should have their own unique
+    # app parameter: https://brottsplatskartan.se/sida/api
+    app = 'ha-' + str(uuid.getnode())
+
+    bpk = brottsplatskartan.BrottsplatsKartan(
+        app=app, area=area,
+        latitude=latitude, longitude=longitude
+    )
+
+    add_entities(
+        [BrottsplatskartanSensor(bpk, name)], True
+    )
+
+
+class BrottsplatskartanSensor(Entity):
+    """Representation of a Brottsplatskartan Sensor."""
+
+    def __init__(self, bpk, name):
+        """Initialize the Brottsplatskartan sensor."""
+        import brottsplatskartan
+        self._attributes = {ATTR_ATTRIBUTION: brottsplatskartan.ATTRIBUTION}
+        self._brottsplatskartan = bpk
+        self._name = name
+        self._previous_incidents = set()
+        self._state = None
+
+    @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._state
+
+    @property
+    def device_state_attributes(self):
+        """Return the state attributes."""
+        return self._attributes
+
+    def update(self):
+        """Update device state."""
+        incident_counts = defaultdict(int)
+        incidents = self._brottsplatskartan.get_incidents()
+
+        if incidents is False:
+            _LOGGER.debug("Problems fetching incidents")
+            return
+
+        if len(incidents) < len(self._previous_incidents):
+            self._previous_incidents = set()
+
+        for incident in incidents:
+            incident_type = incident.get('title_type')
+            incident_counts[incident_type] += 1
+            self._previous_incidents.add(incident.get('id'))
+
+        self._attributes.update(incident_counts)
+        self._state = len(incidents)

requirements_all.txt

@@ -224,6 +224,9 @@ braviarc-homeassistant==0.3.7.dev0
 # homeassistant.components.switch.broadlink
 broadlink==0.9.0
 
+# homeassistant.components.sensor.brottsplatskartan
+brottsplatskartan==0.0.1
+
 # homeassistant.components.cover.brunt
 brunt==0.1.3