#!/usr/bin/env bash
# uptime_check.sh — detect unexpected reboots by monitoring uptime.
set -euo pipefail

UPTIME=$(awk '{printf "%.0f", $1}' /proc/uptime 2>/dev/null || sysctl -n kern.boottime 2>/dev/null | awk '{print $4}' | tr -d ',' || echo "0")

echo "{\"health\":\"healthy\",\"metrics\":{\"uptime_seconds\":$UPTIME}}"