mirror of
https://github.com/kuhyx/screen-locker.git
synced 2026-11-10 22:27:12 +01:00
Krzysztof kuhy Rudnicki
399f9815c4
Sync the workout log across devices using the shared crdt-sync / crdt_sync_dart CRDT transport (same scheme as diet_guard). - Python: new _workout_sync.py + _temperature_status_mixin.py; wire sync into screen_lock.py / status_view.py; add the crdt-sync git dependency and test_sync_fixtures / test_workout_sync suites. - Dart (workout_app): new workout_sync_service.dart, github_device_auth.dart, sync_settings.dart with tests + fakes; settings/workout screens updated. - docs: workstream-d-shared-crdt-transport.md. Verification: pytest 747 passed at 100% coverage; flutter analyze clean; flutter test passed. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017RRCdR4D8SaVrN2xraMQxM
82 lines
3.2 KiB
Python
82 lines
3.2 KiB
Python
"""Temperature fetching via wttr.in for the heat-skip feature.
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Pure logic — no Tk imports. Always fetches from the API; never trusts
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user claims about the temperature.
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"""
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from __future__ import annotations
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from concurrent.futures import ThreadPoolExecutor
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from concurrent.futures import TimeoutError as _FutureTimeoutError
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from dataclasses import dataclass
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import json
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import logging
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import urllib.error
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import urllib.request
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_logger = logging.getLogger(__name__)
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_WTTR_URL = "https://wttr.in/{city}?format=j1"
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_TIMEOUT_SECONDS = 5
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# urlopen's `timeout` bounds the socket connect/read, but not necessarily DNS
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# resolution (`getaddrinfo`) on every platform/resolver — a stalled resolver
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# can block far past `_TIMEOUT_SECONDS` with no visible failure. This is a
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# second, hard wall-clock ceiling enforced independently in a worker thread.
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HARD_TIMEOUT_SECONDS = 6.0
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@dataclass(frozen=True)
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class TemperatureCheck:
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"""Result of a bounded live temperature fetch."""
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temp_celsius: float | None
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timed_out: bool
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def _fetch_current_temp_celsius_unbounded(city: str) -> float | None:
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"""Return the current temperature in °C for *city*, or None on failure.
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Uses wttr.in's JSON API (no API key required). Returns None on network
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errors, timeouts, or unexpected response shapes so callers can fail-closed.
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May block past `_TIMEOUT_SECONDS` if DNS resolution stalls — callers
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should go through `fetch_current_temp_with_status` for a hard bound
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instead of calling this directly.
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"""
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url = _WTTR_URL.format(city=urllib.request.quote(city, safe=""))
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try:
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with urllib.request.urlopen(url, timeout=_TIMEOUT_SECONDS) as resp:
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data = json.loads(resp.read())
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temp_str = data["current_condition"][0]["temp_C"]
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return float(temp_str)
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except (urllib.error.URLError, TimeoutError, OSError) as exc:
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_logger.warning("Temperature fetch failed (network): %s", exc)
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return None
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except (KeyError, IndexError, ValueError, json.JSONDecodeError) as exc:
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_logger.warning("Temperature fetch failed (parse): %s", exc)
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return None
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def fetch_current_temp_with_status(
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city: str, *, hard_timeout: float = HARD_TIMEOUT_SECONDS
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) -> TemperatureCheck:
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"""Fetch °C for *city*, bounded to *hard_timeout* seconds wall-clock.
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Runs the fetch in a worker thread and stops waiting on it after
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*hard_timeout* regardless of what the network call is doing internally
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(DNS, connect, read). The worker thread itself can't be killed and may
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keep running in the background after we give up on it — acceptable for
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a fire-and-forget diagnostic read. Distinguishes "timed out" from other
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failures (network/parse errors) so callers can report which happened.
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"""
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executor = ThreadPoolExecutor(max_workers=1)
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future = executor.submit(_fetch_current_temp_celsius_unbounded, city)
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executor.shutdown(wait=False)
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try:
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temp = future.result(timeout=hard_timeout)
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except _FutureTimeoutError:
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_logger.warning(
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"Temperature fetch exceeded hard timeout of %.1fs", hard_timeout
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)
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return TemperatureCheck(temp_celsius=None, timed_out=True)
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return TemperatureCheck(temp_celsius=temp, timed_out=False)
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