"""Metric constants for the Web backend - derived from the single source
of truth in the platform core (src/afmcore/metrics.py).

THIS FILE MUST NOT define its own metric lists. All definitions, aliases,
labels, directions and required-metric rules live in src/afmcore/metrics.py.
If you add a metric, edit src/afmcore/metrics.py only.

Deployment note: when the Web backend is packaged without the repository
tree, make src/afmcore importable (e.g. pip install -e ., or copy
src/afmcore into the backend as a package) so this module keeps resolving.
"""
import os
import sys

# Make the repository src/ importable when running from a checkout.
_BACKEND_APP_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# web/backend/app/metrics_constants.py -> <repo>/src
_SRC_DIR = os.path.normpath(os.path.join(_BACKEND_APP_DIR, "..", "..", "src"))
if _SRC_DIR not in sys.path and os.path.isdir(_SRC_DIR):
    sys.path.insert(0, _SRC_DIR)

from afmcore.metrics import (  # noqa: E402
    METRIC_KEYS,
    METRIC_LABELS,
    METRIC_UNITS,
    METRIC_DIRECTIONS,
    REQUIRED_METRICS,
)