"""Diagnostic sensors exposed per display (resolution, etc.)."""

from __future__ import annotations

import logging
from typing import Any

from homeassistant.components.sensor import SensorEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity import EntityCategory
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity

from .const import DOMAIN
from .display_coordinator import DisplayCoordinator
from .display_device import display_device_info

_LOGGER = logging.getLogger(__name__)


async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up per-display sensor entities."""
    coordinator: DisplayCoordinator = hass.data[DOMAIN][entry.entry_id][
        "display_coordinator"
    ]

    if not coordinator.data:
        return

    entities = [
        DisplayResolutionSensor(coordinator, entry, monitor)
        for monitor in coordinator.data.values()
        if monitor.get("resolution")
    ]

    if entities:
        async_add_entities(entities)
        _LOGGER.info("Added %d display sensor entities", len(entities))


class DisplayResolutionSensor(CoordinatorEntity[DisplayCoordinator], SensorEntity):
    """Diagnostic sensor reporting the EDID-derived display resolution."""

    _attr_has_entity_name = True
    _attr_name = "Resolution"
    _attr_entity_category = EntityCategory.DIAGNOSTIC
    _attr_icon = "mdi:monitor-screenshot"

    def __init__(
        self,
        coordinator: DisplayCoordinator,
        entry: ConfigEntry,
        monitor: dict[str, Any],
    ) -> None:
        super().__init__(coordinator)
        self._monitor_id: int = monitor["id"]
        self._attr_unique_id = f"{entry.entry_id}_display_resolution_{self._monitor_id}"
        self._attr_device_info = display_device_info(entry, monitor)

    @property
    def native_value(self) -> str | None:
        if self.coordinator.data is None:
            return None
        return self.coordinator.data.get(self._monitor_id, {}).get("resolution")