#!/usr/bin/env bash
# Removes the Homelab Manager task-reporting agent from this server: stops
# and deletes its systemd timer/service, the installed script, and its
# credentials file.
#
# Usage (must run as root — if not already root, put sudo right after the
# pipe so it applies to bash, not to curl):
#   curl -fsSL https://homelab.example.lan/agent/linux/uninstall.sh | sudo bash
#
set -euo pipefail

INSTALL_DIR="/usr/local/bin"
CONFIG_DIR="/etc"
SYSTEMD_DIR="/etc/systemd/system"

if [[ "$EUID" -ne 0 ]]; then
  echo "This uninstaller must be run as root." >&2
  echo "If you're piping from curl, put sudo right after the pipe so it elevates bash, not curl:" >&2
  echo "  curl -fsSL ... | sudo bash" >&2
  exit 1
fi

echo "Removing Homelab Manager agent..."

if command -v systemctl >/dev/null 2>&1; then
  systemctl disable --now homelab-manager-agent.timer >/dev/null 2>&1 || true
fi

rm -f \
  "$SYSTEMD_DIR/homelab-manager-agent.timer" \
  "$SYSTEMD_DIR/homelab-manager-agent.service" \
  "$CONFIG_DIR/homelab-manager-agent.env" \
  "$INSTALL_DIR/homelab-manager-agent.sh" \
  /tmp/hlm-agent-response.json

if command -v systemctl >/dev/null 2>&1; then
  systemctl daemon-reload
fi

echo "Done. The agent no longer runs or reports from this server."
echo "Its entry (and task history) in Homelab Manager is untouched —" \
     "delete it from the Servers & Tasks page if you no longer want it tracked."