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Python

"""Switch platform for the NeoPool integration."""
from collections.abc import Awaitable, Callable
from dataclasses import dataclass
from typing import Any, override
from neopool_modbus import (
InvalidStateReason,
NeoPoolInvalidStateError,
NeoPoolModbusClient,
)
from neopool_modbus.capabilities import (
has_filtvalve,
has_heating_relay,
is_hydrolysis_present,
is_temperature_active,
)
from neopool_modbus.decoders import is_cell_boost_active
from neopool_modbus.exceptions import NeoPoolError
from neopool_modbus.registers import (
HIDRO_COVER_ENABLE_BIT,
HIDRO_TEMP_SHUTDOWN_BIT,
BinaryConfigFlag,
BitmaskConfigFlag,
FiltValveMode,
RelayKind,
TimerRelayMode,
is_valid_relay_gpio,
)
from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
from homeassistant.const import EntityCategory
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
from .const import (
CONF_USE_AUX1,
CONF_USE_AUX2,
CONF_USE_AUX3,
CONF_USE_AUX4,
CONF_USE_COVER_SENSOR,
DOMAIN,
)
from .coordinator import NeoPoolConfigEntry, NeoPoolCoordinator
from .entity import NeoPoolEntity
PARALLEL_UPDATES = 1
type _WriteFn = Callable[
["NeoPoolSwitch", NeoPoolModbusClient, bool], Awaitable[dict[str, Any]]
]
type _IsOnFn = Callable[[dict[str, Any]], bool]
@dataclass(frozen=True, kw_only=True)
class NeoPoolSwitchEntityDescription(SwitchEntityDescription):
"""Describes a NeoPool switch entity."""
supported_fn: Callable[[dict[str, Any]], bool] | None = None
write_fn: _WriteFn | None = None
is_on_fn: _IsOnFn | None = None
translation_placeholders: dict[str, str] | None = None
async def _write_manual_filtration(
entity: NeoPoolSwitch, client: NeoPoolModbusClient, state: bool
) -> dict[str, Any]:
"""Toggle the manual filtration pump.
Pre-check manual mode and boost up-front so the user gets a translated
error instead of a raw library exception.
"""
data = entity.coordinator.data
if data.get("MBF_PAR_FILT_MODE") != 0:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="filtration_not_manual_mode",
)
if is_cell_boost_active(data.get("MBF_CELL_BOOST")):
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="filtration_boost_active",
)
return await client.async_set_manual_filtration(state)
async def _write_backwash(
entity: NeoPoolSwitch, client: NeoPoolModbusClient, state: bool
) -> dict[str, Any]:
"""Start a backwash with the configured duration, or stop it by writing 0."""
data = entity.coordinator.data
if data.get("MBF_PAR_FILTVALVE_MODE") == FiltValveMode.AUTO:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="filtvalve_in_auto_mode",
)
if state:
interval = data.get("MBF_PAR_FILTVALVE_INTERVAL") or 0
if not interval:
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="filtvalve_interval_not_set",
)
await client.async_start_backwash()
return {"MBF_PAR_FILTVALVE_REMAINING": int(interval)}
await client.async_stop_backwash()
return {"MBF_PAR_FILTVALVE_REMAINING": 0}
_RELAY_TIMER_ENABLE_KEY: dict[RelayKind, str] = {
RelayKind.AUX1: "relay_aux1_enable",
RelayKind.AUX2: "relay_aux2_enable",
RelayKind.AUX3: "relay_aux3_enable",
RelayKind.AUX4: "relay_aux4_enable",
}
def _make_write_relay_state(relay: RelayKind) -> _WriteFn:
"""Build a write_fn that drives an aux relay via the library."""
enable_key = _RELAY_TIMER_ENABLE_KEY[relay]
async def _write(
entity: NeoPoolSwitch, client: NeoPoolModbusClient, state: bool
) -> dict[str, Any]:
# Fail-safe: only fire when the relay is confirmed manual.
if entity.coordinator.data.get(enable_key) not in (
TimerRelayMode.ALWAYS_ON,
TimerRelayMode.ALWAYS_OFF,
):
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key="relay_in_auto_mode",
)
return await client.async_set_relay_state(relay, state)
return _write
def _make_write_binary_flag(flag: BinaryConfigFlag) -> _WriteFn:
"""Build a write_fn that toggles a binary configuration flag."""
async def _write(
entity: NeoPoolSwitch, client: NeoPoolModbusClient, state: bool
) -> dict[str, Any]:
return await client.async_set_binary_flag(flag, state)
return _write
def _make_write_bitmask_flag(flag: BitmaskConfigFlag) -> _WriteFn:
"""Build a write_fn that flips a bit in the shared HIDRO cover register."""
async def _write(
entity: NeoPoolSwitch, client: NeoPoolModbusClient, state: bool
) -> dict[str, Any]:
return await client.async_set_bitmask_flag(flag, state)
return _write
def _make_is_on_from_key(data_key: str) -> _IsOnFn:
"""Read a truthy value from a specific coordinator-data key."""
return lambda data: bool(data.get(data_key))
def _make_is_on_int_flag(data_key: str) -> _IsOnFn:
"""Read a coordinator-data integer flag (0 = off, non-zero = on)."""
return lambda data: bool(data.get(data_key, 0))
def _make_is_on_bitmask(data_key: str, mask: int) -> _IsOnFn:
"""Read a single bit from a packed coordinator-data register."""
return lambda data: bool(int(data.get(data_key, 0) or 0) & mask)
SWITCH_DESCRIPTIONS: dict[str, NeoPoolSwitchEntityDescription] = {
"MBF_PAR_FILT_MANUAL_STATE": NeoPoolSwitchEntityDescription(
key="MBF_PAR_FILT_MANUAL_STATE",
translation_key="filt_manual_state",
write_fn=_write_manual_filtration,
is_on_fn=_make_is_on_from_key("Filtration Pump"),
supported_fn=lambda data: is_valid_relay_gpio(
data.get("MBF_PAR_FILT_GPIO", 0) or 0
),
),
"BACKWASH": NeoPoolSwitchEntityDescription(
key="BACKWASH",
translation_key="backwash",
write_fn=_write_backwash,
is_on_fn=_make_is_on_int_flag("MBF_PAR_FILTVALVE_REMAINING"),
supported_fn=has_filtvalve,
),
"MBF_PAR_CLIMA_ONOFF": NeoPoolSwitchEntityDescription(
key="MBF_PAR_CLIMA_ONOFF",
translation_key="clima_onoff",
entity_category=EntityCategory.CONFIG,
write_fn=_make_write_binary_flag(BinaryConfigFlag.CLIMA_ONOFF),
is_on_fn=_make_is_on_int_flag("MBF_PAR_CLIMA_ONOFF"),
supported_fn=lambda data: (
has_heating_relay(data) and is_temperature_active(data)
),
),
"MBF_PAR_SMART_ANTI_FREEZE": NeoPoolSwitchEntityDescription(
key="MBF_PAR_SMART_ANTI_FREEZE",
translation_key="smart_anti_freeze",
entity_category=EntityCategory.CONFIG,
write_fn=_make_write_binary_flag(BinaryConfigFlag.SMART_ANTI_FREEZE),
is_on_fn=_make_is_on_int_flag("MBF_PAR_SMART_ANTI_FREEZE"),
supported_fn=is_temperature_active,
),
"MBF_PAR_UV_MODE": NeoPoolSwitchEntityDescription(
key="MBF_PAR_UV_MODE",
translation_key="uv_mode",
entity_category=EntityCategory.CONFIG,
write_fn=_make_write_binary_flag(BinaryConfigFlag.UV_MODE),
is_on_fn=_make_is_on_int_flag("MBF_PAR_UV_MODE"),
supported_fn=lambda data: is_valid_relay_gpio(
data.get("MBF_PAR_UV_RELAY_GPIO", 0) or 0
),
),
"MBF_PAR_HIDRO_COVER_ENABLE": NeoPoolSwitchEntityDescription(
key="MBF_PAR_HIDRO_COVER_ENABLE",
translation_key="hidro_cover_enable",
entity_category=EntityCategory.CONFIG,
write_fn=_make_write_bitmask_flag(BitmaskConfigFlag.HIDRO_COVER_ENABLE),
is_on_fn=_make_is_on_bitmask(
"MBF_PAR_HIDRO_COVER_ENABLE", HIDRO_COVER_ENABLE_BIT
),
supported_fn=is_hydrolysis_present,
),
"MBF_PAR_HIDRO_TEMP_SHUTDOWN": NeoPoolSwitchEntityDescription(
key="MBF_PAR_HIDRO_TEMP_SHUTDOWN",
translation_key="hidro_temp_shutdown",
entity_category=EntityCategory.CONFIG,
write_fn=_make_write_bitmask_flag(BitmaskConfigFlag.HIDRO_TEMP_SHUTDOWN),
is_on_fn=_make_is_on_bitmask(
"MBF_PAR_HIDRO_COVER_ENABLE", HIDRO_TEMP_SHUTDOWN_BIT
),
supported_fn=lambda data: (
is_hydrolysis_present(data) and is_temperature_active(data)
),
),
"aux1": NeoPoolSwitchEntityDescription(
key="aux1",
translation_key="aux",
translation_placeholders={"number": "1"},
write_fn=_make_write_relay_state(RelayKind.AUX1),
is_on_fn=_make_is_on_from_key("AUX1"),
),
"aux2": NeoPoolSwitchEntityDescription(
key="aux2",
translation_key="aux",
translation_placeholders={"number": "2"},
write_fn=_make_write_relay_state(RelayKind.AUX2),
is_on_fn=_make_is_on_from_key("AUX2"),
),
"aux3": NeoPoolSwitchEntityDescription(
key="aux3",
translation_key="aux",
translation_placeholders={"number": "3"},
write_fn=_make_write_relay_state(RelayKind.AUX3),
is_on_fn=_make_is_on_from_key("AUX3"),
),
"aux4": NeoPoolSwitchEntityDescription(
key="aux4",
translation_key="aux",
translation_placeholders={"number": "4"},
write_fn=_make_write_relay_state(RelayKind.AUX4),
is_on_fn=_make_is_on_from_key("AUX4"),
),
}
# Entities gated on a config-entry option (in addition to their supported_fn).
_ENTITY_OPTION_KEY: dict[str, str] = {
"MBF_PAR_HIDRO_COVER_ENABLE": CONF_USE_COVER_SENSOR,
"aux1": CONF_USE_AUX1,
"aux2": CONF_USE_AUX2,
"aux3": CONF_USE_AUX3,
"aux4": CONF_USE_AUX4,
}
async def async_setup_entry(
hass: HomeAssistant,
entry: NeoPoolConfigEntry,
async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
"""Set up NeoPool switches from a config entry."""
coordinator = entry.runtime_data
options = entry.options
async_add_entities(
NeoPoolSwitch(coordinator, desc)
for key, desc in SWITCH_DESCRIPTIONS.items()
if (
(option_key := _ENTITY_OPTION_KEY.get(key)) is None
or bool(options.get(option_key))
)
and (desc.supported_fn is None or desc.supported_fn(coordinator.data))
)
# Translation key used when the library's rejection has no reason attached
# (older lib versions) or an unknown reason surfaces.
_INVALID_STATE_TRANSLATION_KEY: dict[InvalidStateReason, str] = {
InvalidStateReason.RELAY_IN_AUTO_MODE: "relay_in_auto_mode",
InvalidStateReason.FILTRATION_NOT_IN_MANUAL_MODE: "filtration_not_manual_mode",
InvalidStateReason.FILTRATION_BOOST_ACTIVE: "filtration_boost_active",
InvalidStateReason.FILTVALVE_INTERVAL_NOT_SET: "filtvalve_interval_not_set",
InvalidStateReason.FILTVALVE_IN_AUTO_MODE: "filtvalve_in_auto_mode",
}
class NeoPoolSwitch(NeoPoolEntity, SwitchEntity):
"""Representation of a NeoPool switch entity."""
entity_description: NeoPoolSwitchEntityDescription
def __init__(
self,
coordinator: NeoPoolCoordinator,
description: NeoPoolSwitchEntityDescription,
) -> None:
"""Initialize the NeoPool switch entity."""
super().__init__(coordinator)
self.entity_description = description
if description.translation_placeholders is not None:
self._attr_translation_placeholders = description.translation_placeholders
self._attr_unique_id = (
f"{self.coordinator.config_entry.unique_id}_{description.key.lower()}"
)
@override
async def async_turn_on(self, **kwargs: Any) -> None:
"""Turn the switch ON."""
await self._async_set_state(True)
@override
async def async_turn_off(self, **kwargs: Any) -> None:
"""Turn the switch OFF."""
await self._async_set_state(False)
async def _async_set_state(self, state: bool) -> None:
"""Dispatch turn_on / turn_off via the description callables."""
desc = self.entity_description
if desc.write_fn is None: # pragma: no cover - all switches wire write_fn
return
try:
overrides = await desc.write_fn(self, self.coordinator.client, state)
except NeoPoolInvalidStateError as err:
translation_key = (
_INVALID_STATE_TRANSLATION_KEY.get(err.reason, "relay_in_auto_mode")
if err.reason is not None
else "relay_in_auto_mode"
)
raise ServiceValidationError(
translation_domain=DOMAIN,
translation_key=translation_key,
) from err
except (NeoPoolError, OSError, TimeoutError) as err:
raise HomeAssistantError(
translation_domain=DOMAIN,
translation_key="modbus_communication_error",
translation_placeholders={"error": str(err)},
) from err
# Merge the library's optimistic-update dict into the coordinator cache
# so the UI reflects the new state immediately.
self.coordinator.async_set_updated_data({**self.coordinator.data, **overrides})
self.coordinator.request_refresh_with_followup()
@property
@override
def is_on(self) -> bool:
"""Return True if the switch is on."""
desc = self.entity_description
if desc.is_on_fn is not None:
return desc.is_on_fn(self.coordinator.data)
return False # pragma: no cover