Add ness alarm control panel using nessclient (#18463)

* Add ness alarm control panel using nessclient

* indenting

* .

* Remove availability functionality, will improve and add back in another PR

* Use call_count

* lint

* lint

* Review changes

* Lint

* Bump nessclient to 0.9.8

* Bump nessclient to 0.9.9

* Remove from .coveragerc

homeassistant/components/alarm_control_panel/ness_alarm.py

@@ -0,0 +1,107 @@
+"""
+Support for Ness D8X/D16X alarm panel.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/alarm_control_panel.ness_alarm/
+"""
+
+import logging
+
+import homeassistant.components.alarm_control_panel as alarm
+from homeassistant.components.ness_alarm import (
+    DATA_NESS, SIGNAL_ARMING_STATE_CHANGED)
+from homeassistant.const import (
+    STATE_ALARM_ARMED_AWAY, STATE_ALARM_ARMING,
+    STATE_ALARM_TRIGGERED, STATE_ALARM_PENDING, STATE_ALARM_DISARMED)
+from homeassistant.core import callback
+from homeassistant.helpers.dispatcher import async_dispatcher_connect
+
+_LOGGER = logging.getLogger(__name__)
+
+DEPENDENCIES = ['ness_alarm']
+
+
+async def async_setup_platform(hass, config, async_add_entities,
+                               discovery_info=None):
+    """Set up the Ness Alarm alarm control panel devices."""
+    if discovery_info is None:
+        return
+
+    device = NessAlarmPanel(hass.data[DATA_NESS], 'Alarm Panel')
+    async_add_entities([device])
+
+
+class NessAlarmPanel(alarm.AlarmControlPanel):
+    """Representation of a Ness alarm panel."""
+
+    def __init__(self, client, name):
+        """Initialize the alarm panel."""
+        self._client = client
+        self._name = name
+        self._state = None
+
+    async def async_added_to_hass(self):
+        """Register callbacks."""
+        async_dispatcher_connect(
+            self.hass, SIGNAL_ARMING_STATE_CHANGED,
+            self._handle_arming_state_change)
+
+    @property
+    def name(self):
+        """Return the name of the device."""
+        return self._name
+
+    @property
+    def should_poll(self):
+        """Return the polling state."""
+        return False
+
+    @property
+    def code_format(self):
+        """Return the regex for code format or None if no code is required."""
+        return 'Number'
+
+    @property
+    def state(self):
+        """Return the state of the device."""
+        return self._state
+
+    async def async_alarm_disarm(self, code=None):
+        """Send disarm command."""
+        await self._client.disarm(code)
+
+    async def async_alarm_arm_away(self, code=None):
+        """Send arm away command."""
+        await self._client.arm_away(code)
+
+    async def async_alarm_arm_home(self, code=None):
+        """Send arm home command."""
+        await self._client.arm_home(code)
+
+    async def async_alarm_trigger(self, code=None):
+        """Send trigger/panic command."""
+        await self._client.panic(code)
+
+    @callback
+    def _handle_arming_state_change(self, arming_state):
+        """Handle arming state update."""
+        from nessclient import ArmingState
+
+        if arming_state == ArmingState.UNKNOWN:
+            self._state = None
+        elif arming_state == ArmingState.DISARMED:
+            self._state = STATE_ALARM_DISARMED
+        elif arming_state == ArmingState.ARMING:
+            self._state = STATE_ALARM_ARMING
+        elif arming_state == ArmingState.EXIT_DELAY:
+            self._state = STATE_ALARM_ARMING
+        elif arming_state == ArmingState.ARMED:
+            self._state = STATE_ALARM_ARMED_AWAY
+        elif arming_state == ArmingState.ENTRY_DELAY:
+            self._state = STATE_ALARM_PENDING
+        elif arming_state == ArmingState.TRIGGERED:
+            self._state = STATE_ALARM_TRIGGERED
+        else:
+            _LOGGER.warning("Unhandled arming state: %s", arming_state)
+
+        self.async_schedule_update_ha_state()