Last.fm sensor (#2071)

* Last.fm component

* Pylint fixes

* Last.fm component

* Pylint fixes

* Updated with `.coveragerc` and `requirements_all.txt`

* Pylint fixes

* Updated

* Pylint fix

* Pylint fix

.coveragerc

@@ -159,6 +159,7 @@ omit =
     homeassistant/components/sensor/glances.py
     homeassistant/components/sensor/google_travel_time.py
     homeassistant/components/sensor/gtfs.py
+    homeassistant/components/sensor/lastfm.py
     homeassistant/components/sensor/loopenergy.py
     homeassistant/components/sensor/netatmo.py
     homeassistant/components/sensor/neurio_energy.py

homeassistant/components/sensor/lastfm.py

+"""
+Sensor for Last.fm account status.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.lastfm/
+"""
+import re
+from homeassistant.helpers.entity import Entity
+from homeassistant.const import CONF_API_KEY
+
+ICON = 'mdi:lastfm'
+
+REQUIREMENTS = ['pylast==1.6.0']
+
+
+# pylint: disable=unused-argument
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Setup the Last.fm platform."""
+    import pylast as lastfm
+    network = lastfm.LastFMNetwork(api_key=config.get(CONF_API_KEY))
+    add_devices(
+        [LastfmSensor(username,
+                      network) for username in config.get("users", [])])
+
+
+class LastfmSensor(Entity):
+    """A class for the Last.fm account."""
+
+    # pylint: disable=abstract-method, too-many-instance-attributes
+    def __init__(self, user, lastfm):
+        """Initialize the sensor."""
+        self._user = lastfm.get_user(user)
+        self._name = user
+        self._lastfm = lastfm
+        self._state = "Not Scrobbling"
+        self._playcount = None
+        self._lastplayed = None
+        self._topplayed = None
+        self._cover = None
+        self.update()
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def entity_id(self):
+        """Return the entity ID."""
+        return 'sensor.lastfm_{}'.format(self._name)
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    # pylint: disable=no-member
+    def update(self):
+        """Update device state."""
+        self._cover = self._user.get_image()
+        self._playcount = self._user.get_playcount()
+        last = self._user.get_recent_tracks(limit=2)[0]
+        self._lastplayed = "{} - {}".format(last.track.artist,
+                                            last.track.title)
+        top = self._user.get_top_tracks(limit=1)[0]
+        toptitle = re.search("', '(.+?)',", str(top))
+        topartist = re.search("'(.+?)',", str(top))
+        self._topplayed = "{} - {}".format(topartist.group(1),
+                                           toptitle.group(1))
+        if self._user.get_now_playing() is None:
+            self._state = "Not Scrobbling"
+            return
+        now = self._user.get_now_playing()
+        self._state = "{} - {}".format(now.artist, now.title)
+
+    @property
+    def device_state_attributes(self):
+        """Return the state attributes."""
+        return {'Play Count': self._playcount, 'Last Played':
+                self._lastplayed, 'Top Played': self._topplayed}
+
+    @property
+    def entity_picture(self):
+        """Avatar of the user."""
+        return self._cover
+
+    @property
+    def icon(self):
+        """Return the icon to use in the frontend."""
+        return ICON

requirements_all.txt

@@ -222,6 +222,9 @@ pyfttt==0.3
 # homeassistant.components.device_tracker.icloud
 pyicloud==0.8.3
 
+# homeassistant.components.sensor.lastfm
+pylast==1.6.0
+
 # homeassistant.components.sensor.loopenergy
 pyloopenergy==0.0.10