From bf40bea965638d7b1a9b6b64fb3f8702e74b1d0a Mon Sep 17 00:00:00 2001
From: Austin Drummond <adrum0x7@gmail.com>
Date: Fri, 4 Jan 2019 14:54:37 -0500
Subject: [PATCH] Support for Homekit controller/alarm control panel (#19612)

* added support for homekit security systems

* fixed linting issues

* fixed indentation issues

* simplifired logic on homekit_controller alarm controller panel

* cleaned up battery level const on homekit controller alarm control panel
---
 .../alarm_control_panel/homekit_controller.py | 117 ++++++++++++++++++
 .../components/homekit_controller/__init__.py |   1 +
 2 files changed, 118 insertions(+)
 create mode 100644 homeassistant/components/alarm_control_panel/homekit_controller.py

diff --git a/homeassistant/components/alarm_control_panel/homekit_controller.py b/homeassistant/components/alarm_control_panel/homekit_controller.py
new file mode 100644
index 00000000000..cc760a851cf
--- /dev/null
+++ b/homeassistant/components/alarm_control_panel/homekit_controller.py
@@ -0,0 +1,117 @@
+"""
+Support for Homekit Alarm Control Panel.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/alarm_control_panel.homekit_controller/
+"""
+import logging
+
+from homeassistant.components.homekit_controller import (HomeKitEntity,
+                                                         KNOWN_ACCESSORIES)
+from homeassistant.components.alarm_control_panel import AlarmControlPanel
+from homeassistant.const import (
+    STATE_ALARM_DISARMED, STATE_ALARM_ARMED_AWAY, STATE_ALARM_ARMED_HOME,
+    STATE_ALARM_ARMED_NIGHT, STATE_ALARM_TRIGGERED)
+from homeassistant.const import ATTR_BATTERY_LEVEL
+
+DEPENDENCIES = ['homekit_controller']
+
+ICON = 'mdi:security'
+
+_LOGGER = logging.getLogger(__name__)
+
+CURRENT_STATE_MAP = {
+    0: STATE_ALARM_ARMED_HOME,
+    1: STATE_ALARM_ARMED_AWAY,
+    2: STATE_ALARM_ARMED_NIGHT,
+    3: STATE_ALARM_DISARMED,
+    4: STATE_ALARM_TRIGGERED
+}
+
+TARGET_STATE_MAP = {
+    STATE_ALARM_ARMED_HOME: 0,
+    STATE_ALARM_ARMED_AWAY: 1,
+    STATE_ALARM_ARMED_NIGHT: 2,
+    STATE_ALARM_DISARMED: 3,
+}
+
+
+def setup_platform(hass, config, add_entities, discovery_info=None):
+    """Set up Homekit Alarm Control Panel support."""
+    if discovery_info is None:
+        return
+    accessory = hass.data[KNOWN_ACCESSORIES][discovery_info['serial']]
+    add_entities([HomeKitAlarmControlPanel(accessory, discovery_info)],
+                 True)
+
+
+class HomeKitAlarmControlPanel(HomeKitEntity, AlarmControlPanel):
+    """Representation of a Homekit Alarm Control Panel."""
+
+    def __init__(self, *args):
+        """Initialise the Alarm Control Panel."""
+        super().__init__(*args)
+        self._state = None
+        self._battery_level = None
+
+    def update_characteristics(self, characteristics):
+        """Synchronise the Alarm Control Panel state with Home Assistant."""
+        # pylint: disable=import-error
+        from homekit.model.characteristics import CharacteristicsTypes
+
+        for characteristic in characteristics:
+            ctype = characteristic['type']
+            ctype = CharacteristicsTypes.get_short(ctype)
+            if ctype == "security-system-state.current":
+                self._chars['security-system-state.current'] = \
+                    characteristic['iid']
+                self._state = CURRENT_STATE_MAP[characteristic['value']]
+            elif ctype == "security-system-state.target":
+                self._chars['security-system-state.target'] = \
+                    characteristic['iid']
+            elif ctype == "battery-level":
+                self._chars['battery-level'] = characteristic['iid']
+                self._battery_level = characteristic['value']
+
+    @property
+    def icon(self):
+        """Return icon."""
+        return ICON
+
+    @property
+    def state(self):
+        """Return the state of the device."""
+        return self._state
+
+    def alarm_disarm(self, code=None):
+        """Send disarm command."""
+        self.set_alarm_state(STATE_ALARM_DISARMED, code)
+
+    def alarm_arm_away(self, code=None):
+        """Send arm command."""
+        self.set_alarm_state(STATE_ALARM_ARMED_AWAY, code)
+
+    def alarm_arm_home(self, code=None):
+        """Send stay command."""
+        self.set_alarm_state(STATE_ALARM_ARMED_HOME, code)
+
+    def alarm_arm_night(self, code=None):
+        """Send night command."""
+        self.set_alarm_state(STATE_ALARM_ARMED_NIGHT, code)
+
+    def set_alarm_state(self, state, code=None):
+        """Send state command."""
+        characteristics = [{'aid': self._aid,
+                            'iid': self._chars['security-system-state.target'],
+                            'value': TARGET_STATE_MAP[state]}]
+        self.put_characteristics(characteristics)
+
+    @property
+    def device_state_attributes(self):
+        """Return the optional state attributes."""
+        if self._battery_level is None:
+            return None
+
+        return {
+            ATTR_BATTERY_LEVEL: self._battery_level,
+        }
diff --git a/homeassistant/components/homekit_controller/__init__.py b/homeassistant/components/homekit_controller/__init__.py
index 09068773e4e..74fbb228f54 100644
--- a/homeassistant/components/homekit_controller/__init__.py
+++ b/homeassistant/components/homekit_controller/__init__.py
@@ -24,6 +24,7 @@ HOMEKIT_ACCESSORY_DISPATCH = {
     'outlet': 'switch',
     'switch': 'switch',
     'thermostat': 'climate',
+    'security-system': 'alarm_control_panel',
 }
 
 HOMEKIT_IGNORE = [