text: """Support for command line covers."""
  import logging
  
  import voluptuous as vol
  
  from homeassistant.components.cover import PLATFORM_SCHEMA, CoverEntity
  from homeassistant.const import (
      CONF_COMMAND_CLOSE,
      CONF_COMMAND_OPEN,
      CONF_COMMAND_STATE,
      CONF_COMMAND_STOP,
      CONF_COVERS,
      CONF_FRIENDLY_NAME,
      CONF_VALUE_TEMPLATE,
  )
  import homeassistant.helpers.config_validation as cv
  from homeassistant.helpers.reload import setup_reload_service
  
  from . import call_shell_with_timeout, check_output_or_log
  from .const import CONF_COMMAND_TIMEOUT, DEFAULT_TIMEOUT, DOMAIN, PLATFORMS
  
  _LOGGER = logging.getLogger(__name__)
  
  COVER_SCHEMA = vol.Schema(
      {
          vol.Optional(CONF_COMMAND_CLOSE, default="true"): cv.string,
          vol.Optional(CONF_COMMAND_OPEN, default="true"): cv.string,
          vol.Optional(CONF_COMMAND_STATE): cv.string,
          vol.Optional(CONF_COMMAND_STOP, default="true"): cv.string,
          vol.Optional(CONF_FRIENDLY_NAME): cv.string,
          vol.Optional(CONF_VALUE_TEMPLATE): cv.template,
          vol.Optional(CONF_COMMAND_TIMEOUT, default=DEFAULT_TIMEOUT): cv.positive_int,
      }
  )
  
  PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
      {vol.Required(CONF_COVERS): cv.schema_with_slug_keys(COVER_SCHEMA)}
  )
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up cover controlled by shell commands."""
  
      setup_reload_service(hass, DOMAIN, PLATFORMS)
  
      devices = config.get(CONF_COVERS, {})
      covers = []
  
      for device_name, device_config in devices.items():
          value_template = device_config.get(CONF_VALUE_TEMPLATE)
          if value_template is not None:
              value_template.hass = hass
  
          covers.append(
              CommandCover(
                  hass,
                  device_config.get(CONF_FRIENDLY_NAME, device_name),
                  device_config[CONF_COMMAND_OPEN],
                  device_config[CONF_COMMAND_CLOSE],
                  device_config[CONF_COMMAND_STOP],
                  device_config.get(CONF_COMMAND_STATE),
                  value_template,
                  device_config[CONF_COMMAND_TIMEOUT],
              )
          )
  
      if not covers:
          _LOGGER.error("No covers added")
          return False
  
      add_entities(covers)
  
  
  class CommandCover(CoverEntity):
      """Representation a command line cover."""
  
      def __init__(
          self,
          hass,
          name,
          command_open,
          command_close,
          command_stop,
          command_state,
          value_template,
          timeout,
      ):
          """Initialize the cover."""
          self._hass = hass
          self._name = name
          self._state = None
          self._command_open = command_open
          self._command_close = command_close
          self._command_stop = command_stop
          self._command_state = command_state
          self._value_template = value_template
          self._timeout = timeout
  
      def _move_cover(self, command):
          """Execute the actual commands."""
          _LOGGER.info("Running command: %s", command)
  
          success = call_shell_with_timeout(command, self._timeout) == 0
  
          if not success:
              _LOGGER.error("Command failed: %s", command)
  
          return success
  
      @property
      def should_poll(self):
          """Only poll if we have state command."""
          return self._command_state is not None
  
      @property
      def name(self):
          """Return the name of the cover."""
          return self._name
  
      @property
      def is_closed(self):
          """Return if the cover is closed."""
          if self.current_cover_position is not None:
              return self.current_cover_position == 0
  
      @property
      def current_cover_position(self):
          """Return current position of cover.
  
          None is unknown, 0 is closed, 100 is fully open.
          """
          return self._state
  
      def _query_state(self):
          """Query for the state."""
          _LOGGER.info("Running state value command: %s", self._command_state)
          return check_output_or_log(self._command_state, self._timeout)
  
      def update(self):
          """Update device state."""
          if self._command_state:
              payload = str(self._query_state())
              if self._value_template:
                  payload = self._value_template.render_with_possible_json_value(payload)
              self._state = int(payload)
  
      def open_cover(self, **kwargs):
          """Open the cover."""
          self._move_cover(self._command_open)
  
      def close_cover(self, **kwargs):
          """Close the cover."""
          self._move_cover(self._command_close)
  
      def stop_cover(self, **kwargs):
          """Stop the cover."""
          self._move_cover(self._command_stop)
  