"""Whole-house, zone and climate-group thermostat selectors for GREE Controller."""

from __future__ import annotations

from typing import Any

from homeassistant.components.select import SelectEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity import DeviceInfo
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity

from . import GreeControllerRuntimeData
from .const import DOMAIN
from .coordinator import GreeControllerCoordinator

HOUSE_MODE_LABELS = {
    "off": "Do not control",
    "cool": "Cooling",
    "heat": "Heating",
}
HOUSE_MODE_VALUES = {label: value for value, label in HOUSE_MODE_LABELS.items()}

HOUSE_PRESET_LABELS = {
    "auto": "Auto schedule",
    "comfort": "Comfort",
    "sleep": "Sleep",
    "away": "Away",
}
HOUSE_PRESET_VALUES = {label: value for value, label in HOUSE_PRESET_LABELS.items()}

GROUP_MODE_LABELS = {
    "house": "Global",
    "cool": "Cooling",
    "heat": "Heating",
}
GROUP_MODE_VALUES = {label: value for value, label in GROUP_MODE_LABELS.items()}
GROUP_PRESET_LABELS = HOUSE_PRESET_LABELS
GROUP_PRESET_VALUES = HOUSE_PRESET_VALUES


async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
    """Create whole-house, zone and climate-group thermostat selectors."""
    runtime: GreeControllerRuntimeData = entry.runtime_data
    entities: list[SelectEntity] = [
        GreeControllerHouseModeSelect(runtime.coordinator),
        GreeControllerHousePresetSelect(runtime.coordinator),
    ]
    for zone in runtime.coordinator.plan.get("zones", []):
        zone_id = str(zone.get("zone_id") or "").strip()
        if zone_id:
            entities.append(GreeControllerZonePresetSelect(runtime.coordinator, zone_id))
    for group_id in runtime.coordinator.groups:
        entities.append(GreeControllerGroupModeSelect(runtime.coordinator, group_id))
        entities.append(GreeControllerGroupPresetSelect(runtime.coordinator, group_id))
    async_add_entities(entities)


class _GreeControllerHouseSelect(CoordinatorEntity[GreeControllerCoordinator], SelectEntity):
    """Base for controller-level selectors."""

    _attr_has_entity_name = True

    @property
    def device_info(self) -> DeviceInfo:
        return DeviceInfo(
            identifiers={(DOMAIN, "controller")},
            name="GREE Controller",
            manufacturer="GREE Controller",
            model="Local controller",
        )


class GreeControllerHouseModeSelect(_GreeControllerHouseSelect):
    """Select the smart thermostat house mode."""

    _attr_name = "Thermostat mode"
    _attr_unique_id = "house-thermostat-mode"
    _attr_options = list(HOUSE_MODE_VALUES)

    @property
    def current_option(self) -> str | None:
        value = str(self.coordinator.plan.get("house_mode") or "")
        return HOUSE_MODE_LABELS.get(value)

    async def async_select_option(self, option: str) -> None:
        value = HOUSE_MODE_VALUES.get(option)
        if value is None:
            return
        await self.coordinator.client.house_control(value)
        await self.coordinator.async_request_refresh()


class GreeControllerHousePresetSelect(_GreeControllerHouseSelect):
    """Select the whole-house thermostat work profile."""

    _attr_name = "Work profile"
    _attr_unique_id = "house-work-profile"
    _attr_options = list(HOUSE_PRESET_VALUES)

    @property
    def current_option(self) -> str | None:
        value = self.coordinator.plan.get("house_preset")
        return HOUSE_PRESET_LABELS.get(str(value)) if value is not None else None

    @property
    def extra_state_attributes(self) -> dict[str, Any]:
        return {"mixed_zone_profiles": self.coordinator.plan.get("house_preset") is None}

    async def async_select_option(self, option: str) -> None:
        value = HOUSE_PRESET_VALUES.get(option)
        if value is None:
            return
        await self.coordinator.client.house_preset(value)
        await self.coordinator.async_request_refresh()


class GreeControllerZonePresetSelect(CoordinatorEntity[GreeControllerCoordinator], SelectEntity):
    """Select the temporary work profile for one thermostat zone."""

    _attr_has_entity_name = True
    _attr_name = "Work profile"
    _attr_options = list(HOUSE_PRESET_VALUES)

    def __init__(self, coordinator: GreeControllerCoordinator, zone_id: str) -> None:
        super().__init__(coordinator)
        self._zone_id = zone_id
        self._attr_unique_id = f"{zone_id}-work-profile"

    @property
    def _zone(self) -> dict[str, Any]:
        for zone in self.coordinator.plan.get("zones", []):
            if str(zone.get("zone_id")) == self._zone_id:
                return zone
        return {}

    @property
    def available(self) -> bool:
        return super().available and bool(self._zone)

    @property
    def current_option(self) -> str | None:
        value = str(self._zone.get("preset_override") or "auto")
        return HOUSE_PRESET_LABELS.get(value)

    @property
    def device_info(self) -> DeviceInfo:
        zone = self._zone
        return DeviceInfo(
            identifiers={(DOMAIN, f"zone:{self._zone_id}")},
            name=str(zone.get("zone_name") or self._zone_id),
            manufacturer="GREE Controller",
            model="Zone thermostat",
            via_device=(DOMAIN, "controller"),
        )

    @property
    def extra_state_attributes(self) -> dict[str, Any]:
        return {"active_profile": self._zone.get("preset")}

    async def async_select_option(self, option: str) -> None:
        value = HOUSE_PRESET_VALUES.get(option)
        if value is None:
            return
        await self.coordinator.async_zone_control(self._zone_id, {"preset": value})


class _GreeControllerGroupSelect(CoordinatorEntity[GreeControllerCoordinator], SelectEntity):
    """Base class for climate-group selectors."""

    _attr_has_entity_name = True

    def __init__(self, coordinator: GreeControllerCoordinator, group_id: str) -> None:
        super().__init__(coordinator)
        self._group_id = group_id

    @property
    def _group(self) -> dict[str, Any]:
        return self.coordinator.groups.get(self._group_id, {})

    @property
    def available(self) -> bool:
        return super().available and bool(self._group)

    @property
    def device_info(self) -> DeviceInfo:
        group = self._group
        return DeviceInfo(
            identifiers={(DOMAIN, f"group:{self._group_id}")},
            name=str(group.get("name") or self._group_id),
            manufacturer="GREE Controller",
            model="Climate group",
            via_device=(DOMAIN, "controller"),
        )


class GreeControllerGroupModeSelect(_GreeControllerGroupSelect):
    """Select the thermostat mode policy for one climate group."""

    _attr_name = "Thermostat mode"
    _attr_options = list(GROUP_MODE_VALUES)

    def __init__(self, coordinator: GreeControllerCoordinator, group_id: str) -> None:
        super().__init__(coordinator, group_id)
        self._attr_unique_id = f"{group_id}-group-thermostat-mode"

    @property
    def current_option(self) -> str | None:
        return GROUP_MODE_LABELS.get(str(self._group.get("mode") or ""))

    @property
    def extra_state_attributes(self) -> dict[str, Any]:
        return {
            "mixed_group_mode": self._group.get("mode") == "mixed",
            "global_house_mode": self._group.get("house_mode"),
        }

    async def async_select_option(self, option: str) -> None:
        value = GROUP_MODE_VALUES.get(option)
        if value is None:
            return
        await self.coordinator.client.group_control(self._group_id, {"mode": value})
        await self.coordinator.async_request_refresh()


class GreeControllerGroupPresetSelect(_GreeControllerGroupSelect):
    """Select the work profile for one climate group."""

    _attr_name = "Work profile"
    _attr_options = list(GROUP_PRESET_VALUES)

    def __init__(self, coordinator: GreeControllerCoordinator, group_id: str) -> None:
        super().__init__(coordinator, group_id)
        self._attr_unique_id = f"{group_id}-group-work-profile"

    @property
    def current_option(self) -> str | None:
        return GROUP_PRESET_LABELS.get(str(self._group.get("preset") or ""))

    @property
    def extra_state_attributes(self) -> dict[str, Any]:
        return {"mixed_group_profiles": self._group.get("preset") == "mixed"}

    async def async_select_option(self, option: str) -> None:
        value = GROUP_PRESET_VALUES.get(option)
        if value is None:
            return
        await self.coordinator.client.group_control(self._group_id, {"preset": value})
        await self.coordinator.async_request_refresh()