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#!/usr/bin/env bash
set -euo pipefail
[[ $EUID -eq 0 ]] || { echo "run as root: run0 ./install.sh" >&2; exit 1; }
src="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

install -Dm755 "$src/src/memwatchd.py" /usr/local/lib/memwatch/memwatchd.py
install -Dm644 "$src/units/memwatch.service" /etc/systemd/system/memwatch.service
install -Dm644 "$src/README.md" /usr/share/doc/memwatch/README.md
install -Dm755 "$src/bin/memwatch" /usr/local/bin/memwatch
if [[ -e /etc/memwatch.conf ]]; then
  install -Dm644 "$src/memwatch.conf" /etc/memwatch.conf.new
  echo "kept your /etc/memwatch.conf; new defaults at /etc/memwatch.conf.new"
else
  install -Dm644 "$src/memwatch.conf" /etc/memwatch.conf
fi

systemctl daemon-reload
systemctl enable --now memwatch.service
echo
systemctl --no-pager --lines=15 status memwatch.service || true
echo
echo "Running in dry_run mode. Watch it with:  journalctl -fu memwatch"
echo "When the picks look right, set dry_run = 0 in /etc/memwatch.conf"
echo "and run: systemctl restart memwatch"