#!/usr/bin/env bash
set -euo pipefail

TARGET_IP="1.1.1.1"          # oder 8.8.8.8 o.ä.
PING_COUNT=3
IFACE="wg1"
SERVICE="wg-quick@${IFACE}.service"

LOGTAG="wg1-healthcheck"

if ping -4 -c "${PING_COUNT}" -W 2 "${TARGET_IP}" >/dev/null 2>&1; then
    logger -t "${LOGTAG}" "IPv4 connectivity OK to ${TARGET_IP}"
    exit 0
else
    logger -t "${LOGTAG}" "IPv4 connectivity FAILED to ${TARGET_IP}, restarting ${SERVICE}"
    systemctl restart "${SERVICE}"
    exit 1
fi