"""Button platform for groqd — provides a 'Clear session memory' button."""

from __future__ import annotations

from homeassistant.components.button import ButtonEntity
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers import device_registry as dr

from . import GroqdConfigEntry
from .const import DOMAIN, LOGGER


async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: GroqdConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up groqd button entities."""
    async_add_entities([GroqdClearMemoryButton(config_entry)])


class GroqdClearMemoryButton(ButtonEntity):
    """Button that wipes all persisted conversation history for this entry."""

    _attr_has_entity_name = True
    _attr_translation_key = "clear_memory"

    def __init__(self, entry: GroqdConfigEntry) -> None:
        self._entry = entry
        self._attr_unique_id = f"{entry.entry_id}_clear_memory"
        self._attr_device_info = dr.DeviceInfo(
            identifiers={(DOMAIN, entry.entry_id)},
        )

    async def async_press(self) -> None:
        """Handle button press — delegate to the conversation agent."""
        agent = self._entry.runtime_data.conversation_agent
        if agent is not None:
            await agent.async_clear_memory()
            LOGGER.info("groqd: clear memory button pressed for entry %s", self._entry.entry_id)
        else:
            LOGGER.warning("groqd: clear memory pressed but conversation agent not ready")