""" 
Support for Vera sensors. 

Configuration:
To use the Vera sensors you will need to add something like the following to your config/configuration.yaml

sensor:
    platform: vera
    vera_controller_url: http://YOUR_VERA_IP:3480/
    device_data: 
        - 
            vera_id: 12
            name: My awesome sensor
            exclude: true
        -
            vera_id: 13
            name: Another sensor            

VARIABLES: 

vera_controller_url
*Required
This is the base URL of your vera controller including the port number if not running on 80
Example: http://192.168.1.21:3480/


device_data
*Optional
This contains an array additional device info for your Vera devices.  It is not required and if 
not specified all sensors configured in your Vera controller will be added with default values.


These are the variables for the device_data array:

vera_id
*Required
The Vera device id you wish these configuration options to be applied to


name
*Optional
This parameter allows you to override the name of your Vera device in the HA interface, if not specified the 
value configured for the device in your Vera will be used


exclude
*Optional
This parameter allows you to exclude the specified device from homeassistant, it should be set to "true" if
you want this device excluded



"""
import logging
import requests
import time
import json

from homeassistant.helpers import Device
import homeassistant.external.vera.vera as veraApi
from homeassistant.const import (STATE_OPEN, STATE_CLOSED, ATTR_FRIENDLY_NAME)

_LOGGER = logging.getLogger(__name__)

vera_controller = None
vera_sensors = []

def get_devices(hass, config):
    """ Find and return Vera Sensors. """
    try:
        base_url = config.get('vera_controller_url')
        if not base_url:
            _LOGGER.error("The required parameter 'vera_controller_url' was not found in config")
            return False

        device_data = config.get('device_data', None)

        vera_controller = veraApi.VeraController(base_url)
        devices = vera_controller.get_devices(['Temperature Sensor', 'Light Sensor', 'Sensor'])

        vera_sensors = []
        for device in devices:
            extra_data = get_extra_device_data(device_data, device.deviceId)
            exclude = False
            if extra_data:
                exclude = extra_data.get('exclude', False)

            if exclude is not True: 
                vera_sensors.append(VeraSensor(device, extra_data))

    except Exception as inst:
        _LOGGER.error("Could not find Vera sensors: %s", inst)

    return vera_sensors

def setup_platform(hass, config, add_devices, discovery_info=None):
    add_devices(get_devices(hass, config))

def get_extra_device_data(device_data, device_id):
    if not device_data:
        return None

    for item in device_data:
        if item.get('vera_id') == device_id:
            return item
    return None


class VeraSensor(Device):
    """ Represents a Vera Sensor """
    extra_data = None
    current_value = ''

    def __init__(self, vera_device, extra_data=None):
        self.vera_device = vera_device
        self.extra_data = extra_data        

    def __str__(self):
        return "%s %s %s" % (self.name(), self.deviceId(), self.state())

    @property
    def state(self):
        return self.current_value

    def updateState(self):
        return self.state()

    @property
    def name(self):
        """ Get the mame of the sensor. """
        if self.extra_data and self.extra_data.get('name'):
            return self.extra_data.get('name')
        return self.vera_device.name

    @property
    def state_attributes(self):
        attr = super().state_attributes

        if self.vera_device.has_battery:
            attr['Battery'] = self.vera_device.battery_level + '%'

        if self.vera_device.is_armable:
            armed = self.vera_device.refresh_value('Armed')
            attr['Armed'] = 'True' if armed == '1' else 'False'

        if self.vera_device.is_trippable:
            lastTripped = self.vera_device.refresh_value('LastTrip')
            tripTimeStr = time.strftime("%Y-%m-%d %H:%M", time.localtime(int(lastTripped)))
            attr['Last Tripped'] = tripTimeStr

            tripped = self.vera_device.refresh_value('Tripped')
            attr['Tripped'] = 'True' if tripped == '1' else 'False'

        attr['Vera Device Id'] = self.vera_device.vera_device_id

        return attr


    def update(self):
        if self.vera_device.category == "Temperature Sensor":
            self.vera_device.refresh_value('CurrentTemperature')
            self.current_value = self.vera_device.get_value('CurrentTemperature') + '°' + self.vera_device.veraController.temperature_units
        elif self.vera_device.category == "Light Sensor":
            self.vera_device.refresh_value('CurrentLevel')
            self.current_value = self.vera_device.get_value('CurrentLevel')
        elif self.vera_device.category == "Sensor":
            tripped = self.vera_device.refresh_value('Tripped')
            self.current_value = 'Tripped' if tripped == '1' else 'Not Tripped'
        else:
            self.current_value = 'Unknown'