"""The Monzo integration."""

import logging

from homeassistant.const import Platform
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import ConfigEntryNotReady
from homeassistant.helpers.aiohttp_client import async_get_clientsession
from homeassistant.helpers.config_entry_oauth2_flow import (
    ImplementationUnavailableError,
    OAuth2Session,
    async_get_config_entry_implementation,
)

from .api import AuthenticatedMonzoAPI
from .const import DOMAIN
from .coordinator import MonzoConfigEntry, MonzoCoordinator

_LOGGER = logging.getLogger(__name__)

PLATFORMS: list[Platform] = [Platform.SENSOR]


async def async_migrate_entry(hass: HomeAssistant, entry: MonzoConfigEntry) -> bool:
    """Migrate entry."""
    _LOGGER.debug("Migrating from version %s.%s", entry.version, entry.minor_version)

    if entry.version == 1:
        # 1 -> 1.2: Unique ID from integer to string
        if entry.minor_version == 1:
            minor_version = 2
            hass.config_entries.async_update_entry(
                entry, unique_id=str(entry.unique_id), minor_version=minor_version
            )

    _LOGGER.debug("Migration successful")

    return True


async def async_setup_entry(hass: HomeAssistant, entry: MonzoConfigEntry) -> bool:
    """Set up Monzo from a config entry."""
    try:
        implementation = await async_get_config_entry_implementation(hass, entry)
    except ImplementationUnavailableError as err:
        raise ConfigEntryNotReady(
            translation_domain=DOMAIN,
            translation_key="oauth2_implementation_unavailable",
        ) from err

    session = OAuth2Session(hass, entry, implementation)

    external_api = AuthenticatedMonzoAPI(async_get_clientsession(hass), session)

    coordinator = MonzoCoordinator(hass, entry, external_api)

    await coordinator.async_config_entry_first_refresh()

    entry.runtime_data = coordinator
    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)

    return True


async def async_unload_entry(hass: HomeAssistant, entry: MonzoConfigEntry) -> bool:
    """Unload a config entry."""
    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
