"""Numerical constants shared by the reorganized PKS algorithms and models.

Values are copied verbatim from ``backend/scan_pks_fault_evolution.py`` so the
rebuilt algorithms stay behaviourally identical to the original scanner.
"""
from __future__ import annotations

# --- shared hourly aggregation ---
EXPECTED_PER_HOUR = 720
MIN_HOUR_COVERAGE = 0.80
MIN_DAILY_HOURS = 4
MIN_HISTORY_HOURS = 24
BASELINE_DAYS = 3
RESET_GAP_HOURS = 12

# --- pressure levels ---
HOUR_ALARM_SAMPLE_RATIO = 0.20
HOURLY_BASELINE_HOURS = 24
HOURLY_TREND_HOURS = 6
OIL_CONFIRM_HOURS = 3
OIL_DOWNGRADE_HOURS = 2
OIL_RECOVER_HOURS = 3
OIL_STAGE_MERGE_GAP_HOURS = 6
RESET_RISE_ABS = 0.04
RESET_RISE_REL = 0.10

# --- pressure stage-1 precursor / startup recovery ---
OIL_PRECURSOR_DECLINE_HOURS = 6
OIL_PRECURSOR_SLOPE = -0.001
OIL_STARTUP_CANDIDATE_HOURS = 24
OIL_STARTUP_OBSERVE_HOURS = 72
OIL_STARTUP_STABLE_HOURS = 12
OIL_STARTUP_RECOVERY_RATIO = 0.95

# --- vibration ---
VIBRATION_BASELINE_DAYS = 7
VIBRATION_CONFIRM_HOURS = 3
VIBRATION_MERGE_GAP_HOURS = 6
VIBRATION_RESTART_GAP_HOURS = 12

__all__ = [name for name in dir() if name.isupper()]