hass.tibber_prices/custom_components/tibber_prices/api/helpers.py
Julian Pawlowski 2de793cfda refactor: migrate from multi-home to single-home-per-coordinator architecture
Changed from centralized main+subentry coordinator pattern to independent
coordinators per home. Each config entry now manages its own home data
with its own API client and access token.

Architecture changes:
- API Client: async_get_price_info() changed from home_ids: set[str] to home_id: str
  * Removed GraphQL alias pattern (home0, home1, ...)
  * Single-home query structure without aliasing
  * Simplified response parsing (viewer.home instead of viewer.home0)

- Coordinator: Removed main/subentry distinction
  * Deleted is_main_entry() and _has_existing_main_coordinator()
  * Each coordinator fetches its own data independently
  * Removed _find_main_coordinator() and _get_configured_home_ids()
  * Simplified _async_update_data() - no subentry logic
  * Added _home_id instance variable from config_entry.data

- __init__.py: New _get_access_token() helper
  * Handles token retrieval for both parent and subentries
  * Subentries find parent entry to get shared access token
  * Creates single API client instance per coordinator

- Data structures: Flat single-home format
  * Old: {"homes": {home_id: {"price_info": [...]}}}
  * New: {"home_id": str, "price_info": [...], "currency": str}
  * Attribute name: "periods" → "pricePeriods" (consistent with priceInfo)

- helpers.py: Removed get_configured_home_ids() (no longer needed)
  * parse_all_timestamps() updated for single-home structure

Impact: Each home operates independently with its own lifecycle tracking,
caching, and period calculations. Simpler architecture, easier debugging,
better isolation between homes.
2025-11-24 16:24:37 +00:00

247 lines
10 KiB
Python

"""Helper functions for API response processing."""
from __future__ import annotations
import logging
from typing import TYPE_CHECKING
from homeassistant.const import __version__ as ha_version
if TYPE_CHECKING:
import aiohttp
from .queries import TibberPricesQueryType
from .exceptions import (
TibberPricesApiClientAuthenticationError,
TibberPricesApiClientError,
TibberPricesApiClientPermissionError,
)
_LOGGER = logging.getLogger(__name__)
HTTP_BAD_REQUEST = 400
HTTP_UNAUTHORIZED = 401
HTTP_FORBIDDEN = 403
HTTP_TOO_MANY_REQUESTS = 429
def verify_response_or_raise(response: aiohttp.ClientResponse) -> None:
"""Verify that the response is valid."""
if response.status == HTTP_UNAUTHORIZED:
_LOGGER.error("Tibber API authentication failed - check access token")
raise TibberPricesApiClientAuthenticationError(TibberPricesApiClientAuthenticationError.INVALID_CREDENTIALS)
if response.status == HTTP_FORBIDDEN:
_LOGGER.error("Tibber API access forbidden - insufficient permissions")
raise TibberPricesApiClientPermissionError(TibberPricesApiClientPermissionError.INSUFFICIENT_PERMISSIONS)
if response.status == HTTP_TOO_MANY_REQUESTS:
# Check for Retry-After header that Tibber might send
retry_after = response.headers.get("Retry-After", "unknown")
_LOGGER.warning("Tibber API rate limit exceeded - retry after %s seconds", retry_after)
raise TibberPricesApiClientError(TibberPricesApiClientError.RATE_LIMIT_ERROR.format(retry_after=retry_after))
if response.status == HTTP_BAD_REQUEST:
_LOGGER.error("Tibber API rejected request - likely invalid GraphQL query")
raise TibberPricesApiClientError(
TibberPricesApiClientError.INVALID_QUERY_ERROR.format(message="Bad request - likely invalid GraphQL query")
)
response.raise_for_status()
async def verify_graphql_response(response_json: dict, query_type: TibberPricesQueryType) -> None:
"""Verify the GraphQL response for errors and data completeness, including empty data."""
if "errors" in response_json:
errors = response_json["errors"]
if not errors:
_LOGGER.error("Tibber API returned empty errors array")
raise TibberPricesApiClientError(TibberPricesApiClientError.UNKNOWN_ERROR)
error = errors[0] # Take first error
if not isinstance(error, dict):
_LOGGER.error("Tibber API returned malformed error: %s", error)
raise TibberPricesApiClientError(TibberPricesApiClientError.MALFORMED_ERROR.format(error=error))
message = error.get("message", "Unknown error")
extensions = error.get("extensions", {})
error_code = extensions.get("code")
# Handle specific Tibber API error codes
if error_code == "UNAUTHENTICATED":
_LOGGER.error("Tibber API authentication error: %s", message)
raise TibberPricesApiClientAuthenticationError(TibberPricesApiClientAuthenticationError.INVALID_CREDENTIALS)
if error_code == "FORBIDDEN":
_LOGGER.error("Tibber API permission error: %s", message)
raise TibberPricesApiClientPermissionError(TibberPricesApiClientPermissionError.INSUFFICIENT_PERMISSIONS)
if error_code in ["RATE_LIMITED", "TOO_MANY_REQUESTS"]:
# Some GraphQL APIs return rate limit info in extensions
retry_after = extensions.get("retryAfter", "unknown")
_LOGGER.warning(
"Tibber API rate limited via GraphQL: %s (retry after %s)",
message,
retry_after,
)
raise TibberPricesApiClientError(
TibberPricesApiClientError.RATE_LIMIT_ERROR.format(retry_after=retry_after)
)
if error_code in ["VALIDATION_ERROR", "GRAPHQL_VALIDATION_FAILED"]:
_LOGGER.error("Tibber API validation error: %s", message)
raise TibberPricesApiClientError(TibberPricesApiClientError.INVALID_QUERY_ERROR.format(message=message))
_LOGGER.error("Tibber API GraphQL error (code: %s): %s", error_code or "unknown", message)
raise TibberPricesApiClientError(TibberPricesApiClientError.GRAPHQL_ERROR.format(message=message))
if "data" not in response_json or response_json["data"] is None:
_LOGGER.error("Tibber API response missing data object")
raise TibberPricesApiClientError(
TibberPricesApiClientError.GRAPHQL_ERROR.format(message="Response missing data object")
)
# Empty data check (for retry logic) - always check, regardless of query_type
if is_data_empty(response_json["data"], query_type.value):
_LOGGER.debug("Empty data detected for query_type: %s", query_type)
raise TibberPricesApiClientError(
TibberPricesApiClientError.EMPTY_DATA_ERROR.format(query_type=query_type.value)
)
def is_data_empty(data: dict, query_type: str) -> bool:
"""
Check if the response data is empty or incomplete.
For viewer data:
- Must have userId and homes
- If either is missing, data is considered empty
- If homes is empty, data is considered empty
- If userId is None, data is considered empty
For price info:
- Must have range data
- Must have today data
- tomorrow can be empty if we have valid historical and today data
"""
_LOGGER.debug("Checking if data is empty for query_type %s", query_type)
is_empty = False
try:
if query_type == "user":
has_user_id = (
"viewer" in data
and isinstance(data["viewer"], dict)
and "userId" in data["viewer"]
and data["viewer"]["userId"] is not None
)
has_homes = (
"viewer" in data
and isinstance(data["viewer"], dict)
and "homes" in data["viewer"]
and isinstance(data["viewer"]["homes"], list)
and len(data["viewer"]["homes"]) > 0
)
is_empty = not has_user_id or not has_homes
_LOGGER.debug(
"Viewer check - has_user_id: %s, has_homes: %s, is_empty: %s",
has_user_id,
has_homes,
is_empty,
)
elif query_type == "price_info":
# Check for single home data (viewer.home)
viewer = data.get("viewer", {})
home_data = viewer.get("home")
if not home_data:
_LOGGER.debug("No home data found in price_info response")
is_empty = True
else:
_LOGGER.debug("Checking price_info for single home")
if not home_data or "currentSubscription" not in home_data or home_data["currentSubscription"] is None:
_LOGGER.debug("Missing currentSubscription in home")
is_empty = True
else:
subscription = home_data["currentSubscription"]
# Check priceInfoRange (96 quarter-hourly intervals)
has_yesterday = (
"priceInfoRange" in subscription
and subscription["priceInfoRange"] is not None
and "edges" in subscription["priceInfoRange"]
and subscription["priceInfoRange"]["edges"]
)
# Check priceInfo for today's data
has_price_info = "priceInfo" in subscription and subscription["priceInfo"] is not None
has_today = (
has_price_info
and "today" in subscription["priceInfo"]
and subscription["priceInfo"]["today"] is not None
and len(subscription["priceInfo"]["today"]) > 0
)
# Data is empty if we don't have historical data or today's data
is_empty = not has_yesterday or not has_today
_LOGGER.debug(
"Price info check - priceInfoRange: %s, today: %s, is_empty: %s",
bool(has_yesterday),
bool(has_today),
is_empty,
)
else:
_LOGGER.debug("Unknown query type %s, treating as non-empty", query_type)
is_empty = False
except (KeyError, IndexError, TypeError) as error:
_LOGGER.debug("Error checking data emptiness: %s", error)
is_empty = True
return is_empty
def prepare_headers(access_token: str, version: str) -> dict[str, str]:
"""Prepare headers for API request."""
return {
"Authorization": f"Bearer {access_token}",
"Accept": "application/json",
"User-Agent": f"HomeAssistant/{ha_version} tibber_prices/{version}",
}
def flatten_price_info(subscription: dict) -> list[dict]:
"""
Transform and flatten priceInfo from full API data structure.
Returns a flat list of all price intervals ordered as:
[day_before_yesterday_prices, yesterday_prices, today_prices, tomorrow_prices]
priceInfoRange fetches 192 quarter-hourly intervals starting from the day before
yesterday midnight (2 days of historical data), which provides sufficient data
for calculating trailing 24h averages for all intervals including yesterday.
Args:
subscription: The currentSubscription dictionary from API response.
Returns:
A flat list containing all price dictionaries (startsAt, total, level).
"""
price_info_range = subscription.get("priceInfoRange", {})
# Transform priceInfoRange edges data (extract historical quarter-hourly prices)
# This contains 192 intervals (2 days) starting from day before yesterday midnight
historical_prices = []
if "edges" in price_info_range:
edges = price_info_range["edges"]
for edge in edges:
if "node" not in edge:
_LOGGER.debug("Skipping edge without node: %s", edge)
continue
historical_prices.append(edge["node"])
# Return all intervals as a single flattened array
return (
historical_prices
+ subscription.get("priceInfo", {}).get("today", [])
+ subscription.get("priceInfo", {}).get("tomorrow", [])
)