mirror of
https://github.com/kuhyx/screen-locker.git
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82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
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"""Mixin: workout log persistence (read/write workout_log.json)."""
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from __future__ import annotations
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from datetime import datetime, timezone
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import json
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import logging
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from gatelock.log_integrity import compute_entry_hmac, verify_entry_hmac
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from screen_locker._constants import SCHEDULED_SKIPS_FILE
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_logger = logging.getLogger(__name__)
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class LogMixin:
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"""Handles reading and writing workout_log.json for the ScreenLocker."""
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def has_logged_today(self) -> bool:
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"""Check if workout has been logged today with valid HMAC."""
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if not self.log_file.exists(): # type: ignore[attr-defined]
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return False
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try:
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with self.log_file.open() as f: # type: ignore[attr-defined]
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logs = json.load(f)
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except (OSError, json.JSONDecodeError):
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return False
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else:
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today = datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
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entry = logs.get(today)
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if entry is None:
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return False
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if verify_entry_hmac(entry):
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return entry.get("workout_data", {}).get("type") != "early_bird"
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if compute_entry_hmac({"_probe": True}) is None and "hmac" not in entry:
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_logger.info("HMAC key unavailable — accepting unsigned entry")
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return entry.get("workout_data", {}).get("type") != "early_bird"
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_logger.warning("HMAC verification failed for today's log entry")
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return False
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def _load_existing_logs(self) -> dict:
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"""Load existing workout logs from file."""
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if not self.log_file.exists(): # type: ignore[attr-defined]
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return {}
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try:
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with self.log_file.open() as f: # type: ignore[attr-defined]
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return json.load(f)
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except (OSError, json.JSONDecodeError):
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return {}
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def _is_scheduled_skip_today(self) -> bool:
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"""Return True if today's date is listed in the scheduled skips file."""
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if not SCHEDULED_SKIPS_FILE.exists():
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return False
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try:
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with SCHEDULED_SKIPS_FILE.open() as f:
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skips = json.load(f)
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except (OSError, json.JSONDecodeError):
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return False
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today = datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
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return today in skips
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def save_workout_log(self) -> None:
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"""Save workout data to log file with HMAC signature."""
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logs = self._load_existing_logs()
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today = datetime.now(tz=timezone.utc).strftime("%Y-%m-%d")
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entry: dict[str, object] = {
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"timestamp": datetime.now(tz=timezone.utc).isoformat(),
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"workout_data": self.workout_data, # type: ignore[attr-defined]
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}
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signature = compute_entry_hmac(entry)
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if signature is not None:
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entry["hmac"] = signature
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else:
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_logger.warning("HMAC key unavailable — saving unsigned entry")
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logs[today] = entry
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try:
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with self.log_file.open("w") as f: # type: ignore[attr-defined]
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json.dump(logs, f, indent=2)
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except OSError as e:
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_logger.warning("Could not save workout log: %s", e)
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