import logging

from homeassistant_api import Client, HomeassistantAPIError

from cookbook.connectors.connector import Connector
from cookbook.models import ShoppingListEntry, HomeAssistantConfig, Space


class HomeAssistant(Connector):
    _config: HomeAssistantConfig

    def __init__(self, config: HomeAssistantConfig):
        self._config = config
        self._logger = logging.getLogger("connector.HomeAssistant")

    async def on_shopping_list_entry_created(self, space: Space, shopping_list_entry: ShoppingListEntry) -> None:
        if not self._config.on_shopping_list_entry_created_enabled:
            return

        item, description = _format_shopping_list_entry(shopping_list_entry)
        async with Client(self._config.url, self._config.token, use_async=True) as client:
            try:
                todo_domain = await client.async_get_domain('todo')
                await todo_domain.add_item(entity_id=self._config.todo_entity, item=item)
            except HomeassistantAPIError as err:
                self._logger.warning(f"[HomeAssistant {self._config.name}] Received an exception from the api: {err=}, {type(err)=}")

    async def on_shopping_list_entry_updated(self, space: Space, shopping_list_entry: ShoppingListEntry) -> None:
        if not self._config.on_shopping_list_entry_updated_enabled:
            return
        pass

    async def on_shopping_list_entry_deleted(self, space: Space, shopping_list_entry: ShoppingListEntry) -> None:
        if not self._config.on_shopping_list_entry_deleted_enabled:
            return

        item, description = _format_shopping_list_entry(shopping_list_entry)
        async with Client(self._config.url, self._config.token, use_async=True) as client:
            try:
                todo_domain = await client.async_get_domain('todo')
                await todo_domain.remove_item(entity_id=self._config.todo_entity, item=item)
            except HomeassistantAPIError as err:
                self._logger.warning(f"[HomeAssistant {self._config.name}] Received an exception from the api: {err=}, {type(err)=}")


def _format_shopping_list_entry(shopping_list_entry: ShoppingListEntry):
    item = shopping_list_entry.food.name
    if shopping_list_entry.amount > 0:
        if shopping_list_entry.unit and shopping_list_entry.unit.base_unit and len(shopping_list_entry.unit.base_unit) > 0:
            item += f" ({shopping_list_entry.amount} {shopping_list_entry.unit.base_unit})"
        elif shopping_list_entry.unit and shopping_list_entry.unit.name and len(shopping_list_entry.unit.name) > 0:
            item += f" ({shopping_list_entry.amount} {shopping_list_entry.unit.name})"
        else:
            item += f" ({shopping_list_entry.amount})"

    description = "Imported by TandoorRecipes"
    if shopping_list_entry.created_by.first_name and len(shopping_list_entry.created_by.first_name) > 0:
        description += f", created by {shopping_list_entry.created_by.first_name}"
    else:
        description += f", created by {shopping_list_entry.created_by.username}"

    return item, description