Add support fo map data from Neato (#6939)

* Responsiveness

* Delay was not needed as commands does not return until done.

* Add support for cleaning maps and cleaning data

* Hound

* Docstring

* Update requirements

* Review changes

* External lib now returns the raw data.

* debug

* Sensor did not refresh

* Error handling

* Issue warning on connection error

* Update requirements

* Review changes

homeassistant/components/camera/neato.py

@@ -0,0 +1,65 @@
+"""
+Camera that loads a picture from a local file.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/camera.neato/
+"""
+import logging
+
+from datetime import timedelta
+from homeassistant.components.camera import Camera
+from homeassistant.components.neato import (
+    NEATO_MAP_DATA, NEATO_ROBOTS, NEATO_LOGIN)
+from homeassistant.util import Throttle
+
+_LOGGER = logging.getLogger(__name__)
+
+DEPENDENCIES = ['neato']
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Setup the Camera."""
+    dev = []
+    for robot in hass.data[NEATO_ROBOTS]:
+        if 'maps' in robot.traits:
+            dev.append(NeatoCleaningMap(hass, robot))
+    _LOGGER.debug('Adding robots for cleaning maps %s', dev)
+    add_devices(dev, True)
+
+
+class NeatoCleaningMap(Camera):
+    """Neato cleaning map for last clean."""
+
+    def __init__(self, hass, robot):
+        """Initialize Neato cleaning map."""
+        super().__init__()
+        self.robot = robot
+        self._robot_name = self.robot.name + ' Cleaning Map'
+        self._robot_serial = self.robot.serial
+        self.neato = hass.data[NEATO_LOGIN]
+        self._image_url = None
+        self._image = None
+
+    def camera_image(self):
+        """Return image response."""
+        self.update()
+        return self._image
+
+    @Throttle(timedelta(seconds=10))
+    def update(self):
+        """Check the contents of the map list."""
+        self.neato.update_robots()
+        image_url = None
+        map_data = self.hass.data[NEATO_MAP_DATA]
+        image_url = map_data[self._robot_serial]['maps'][0]['url']
+        if image_url == self._image_url:
+            _LOGGER.debug('The map image_url is the same as old')
+            return
+        image = self.neato.download_map(image_url)
+        self._image = image.read()
+        self._image_url = image_url
+
+    @property
+    def name(self):
+        """Return the name of this camera."""
+        return self._robot_name