"""Operational monitoring routes."""
from __future__ import annotations

import logging

from flask import Blueprint, jsonify

from ..database import db_cursor
from ..metrics import export_metrics

bp = Blueprint("monitoring", __name__)


@bp.route("/health", methods=["GET"])
def health():
    """Simple health endpoint used by orchestrators and Docker HEALTHCHECK."""
    try:
        with db_cursor(read_only=True) as (_, cur):
            cur.execute("SELECT 1")
            cur.fetchone()
    except Exception as exc:  # pragma: no cover - logged for operators
        logging.exception("Health check DB failure: %s", exc)
        return jsonify({"status": "unhealthy"}), 500

    return jsonify({"status": "ok"}), 200


@bp.route("/metrics", methods=["GET"])
def metrics():
    payload, status, headers = export_metrics()
    if isinstance(payload, dict):
        return jsonify(payload), status
    return payload, status, headers