Egardia redesign - generic component and sensor support (#11994)

* Egardia redesign - generic component and sensor support

* Updating .coveragerc and requirements_all

* Fixing linting errors

* Fixing linting errors (again)

* Fixing linting errors

* Responding to review

* Responding to review.

* Updating requirements_all.txt

* Responding to review.

* Responding to review

* Removing unnessesary logging line.

* Responding to review

* Responding to review.

* Fixing copying mistake.

* Responding to review.

* Improving validation.

* Updating package requirement to .38

* Fixing syntax error.

* Updating requirements_all.txt

* Fixing bug handling alarm status.

* Updating requirements_all.txt

* Updating requirements_all.txt

* Changing parsing of configuration.

* Changing code lookup.

* Fixing linting error.

homeassistant/components/binary_sensor/egardia.py

@@ -0,0 +1,78 @@
+"""
+Interfaces with Egardia/Woonveilig alarm control panel.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/binary_sensor.egardia/
+"""
+import asyncio
+import logging
+
+from homeassistant.components.binary_sensor import BinarySensorDevice
+from homeassistant.const import STATE_ON, STATE_OFF
+from homeassistant.components.egardia import (
+    EGARDIA_DEVICE, ATTR_DISCOVER_DEVICES)
+_LOGGER = logging.getLogger(__name__)
+
+EGARDIA_TYPE_TO_DEVICE_CLASS = {'IR Sensor': 'motion',
+                                'Door Contact': 'opening',
+                                'IR': 'motion'}
+
+
+@asyncio.coroutine
+def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
+    """Initialize the platform."""
+    if (discovery_info is None or
+            discovery_info[ATTR_DISCOVER_DEVICES] is None):
+        return
+
+    disc_info = discovery_info[ATTR_DISCOVER_DEVICES]
+    # multiple devices here!
+    async_add_devices(
+        (
+            EgardiaBinarySensor(
+                sensor_id=disc_info[sensor]['id'],
+                name=disc_info[sensor]['name'],
+                egardia_system=hass.data[EGARDIA_DEVICE],
+                device_class=EGARDIA_TYPE_TO_DEVICE_CLASS.get(
+                    disc_info[sensor]['type'], None)
+            )
+            for sensor in disc_info
+        ), True)
+
+
+class EgardiaBinarySensor(BinarySensorDevice):
+    """Represents a sensor based on an Egardia sensor (IR, Door Contact)."""
+
+    def __init__(self, sensor_id, name, egardia_system, device_class):
+        """Initialize the sensor device."""
+        self._id = sensor_id
+        self._name = name
+        self._state = None
+        self._device_class = device_class
+        self._egardia_system = egardia_system
+
+    def update(self):
+        """Update the status."""
+        egardia_input = self._egardia_system.getsensorstate(self._id)
+        self._state = STATE_ON if egardia_input else STATE_OFF
+
+    @property
+    def name(self):
+        """The name of the device."""
+        return self._name
+
+    @property
+    def is_on(self):
+        """Whether the device is switched on."""
+        return self._state == STATE_ON
+
+    @property
+    def hidden(self):
+        """Whether the device is hidden by default."""
+        # these type of sensors are probably mainly used for automations
+        return True
+
+    @property
+    def device_class(self):
+        """The device class."""
+        return self._device_class