"""Read-only simulated ON/OFF demand. It never changes a physical switch."""
from homeassistant.components.binary_sensor import BinarySensorEntity
from homeassistant.helpers.update_coordinator import CoordinatorEntity

from .const import DOMAIN


async def async_setup_entry(hass, entry, async_add_entities):
    coordinator = hass.data[DOMAIN][entry.entry_id]
    async_add_entities([HeatingMPCProposal(coordinator, entry.entry_id)])


class HeatingMPCProposal(CoordinatorEntity, BinarySensorEntity):
    _attr_has_entity_name = True
    _attr_name = "Heating MPC Proposed Heat"
    _attr_icon = "mdi:fire"

    def __init__(self, coordinator, entry_id):
        super().__init__(coordinator)
        self._attr_unique_id = f"{entry_id}_proposal"

    @property
    def available(self) -> bool:
        return self.coordinator.last_update_success and self.coordinator.data.get("status") == "ready"

    @property
    def is_on(self):
        return self.coordinator.data.get("proposal")