88 lines
2.4 KiB
Python
88 lines
2.4 KiB
Python
"""Support for showing random numbers."""
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import logging
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import voluptuous as vol
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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from homeassistant.const import (
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CONF_MAXIMUM,
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CONF_MINIMUM,
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CONF_NAME,
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CONF_UNIT_OF_MEASUREMENT,
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)
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity import Entity
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_LOGGER = logging.getLogger(__name__)
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ATTR_MAXIMUM = "maximum"
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ATTR_MINIMUM = "minimum"
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DEFAULT_NAME = "Random Sensor"
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DEFAULT_MIN = 0
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DEFAULT_MAX = 20
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ICON = "mdi:hanger"
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
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{
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vol.Optional(CONF_MAXIMUM, default=DEFAULT_MAX): cv.positive_int,
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vol.Optional(CONF_MINIMUM, default=DEFAULT_MIN): cv.positive_int,
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vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
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vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
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}
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)
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async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
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"""Set up the Random number sensor."""
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name = config.get(CONF_NAME)
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minimum = config.get(CONF_MINIMUM)
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maximum = config.get(CONF_MAXIMUM)
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unit = config.get(CONF_UNIT_OF_MEASUREMENT)
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async_add_entities([RandomSensor(name, minimum, maximum, unit)], True)
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class RandomSensor(Entity):
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"""Representation of a Random number sensor."""
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def __init__(self, name, minimum, maximum, unit_of_measurement):
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"""Initialize the Random sensor."""
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self._name = name
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self._minimum = minimum
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self._maximum = maximum
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self._unit_of_measurement = unit_of_measurement
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self._state = None
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@property
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def name(self):
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"""Return the name of the device."""
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return self._name
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@property
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def state(self):
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"""Return the state of the device."""
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return self._state
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@property
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def icon(self):
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"""Return the icon to use in the frontend, if any."""
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return ICON
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@property
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def unit_of_measurement(self):
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"""Return the unit this state is expressed in."""
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return self._unit_of_measurement
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@property
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def device_state_attributes(self):
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"""Return the attributes of the sensor."""
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return {ATTR_MAXIMUM: self._maximum, ATTR_MINIMUM: self._minimum}
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async def async_update(self):
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"""Get a new number and updates the states."""
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from random import randrange
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self._state = randrange(self._minimum, self._maximum + 1)
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