#!/usr/bin/env bash
#
# Remove VoxIP Kiosk OS.
#
#   sudo ./uninstall.sh          # remove programs and services, keep configuration
#   sudo ./uninstall.sh --purge  # also remove configuration, state, logs and users
#
# Installed Debian packages (Chromium, Xorg, Flask, …) are left in place; remove
# them with apt if they are no longer needed.

set -euo pipefail

PURGE=0
[[ ${1:-} == "--purge" ]] && PURGE=1
[[ ${1:-} == "-h" || ${1:-} == "--help" ]] && { sed -n '3,10p' "$0" | sed 's/^# \{0,1\}//'; exit 0; }
[[ $EUID -eq 0 ]] || { echo "Voer dit script uit met sudo." >&2; exit 1; }

UNITS=(voxip-kiosk-healthcheck.timer voxip-kiosk-healthcheck.service voxip-kiosk-agent.service
       voxip-kiosk-browser.service voxip-kiosk-x.service voxip-kiosk-manager.service
       voxip-network-guard.service voxip-boot-import.service)

PREVIOUS_TARGET="$(cat /var/lib/voxip-kiosk/previous-default-target 2>/dev/null || true)"
mapfile -t DISABLED_DMS < <(cat /var/lib/voxip-kiosk/disabled-display-managers 2>/dev/null)

echo "==> Services stoppen en verwijderen"
systemctl stop voxip-network-rollback.timer 2>/dev/null || true
for unit in "${UNITS[@]}"; do
  systemctl disable --now "$unit" 2>/dev/null || true
  rm -f "/etc/systemd/system/$unit"
done
systemctl daemon-reload

echo "==> Bestanden verwijderen"
rm -rf /usr/lib/voxip-kiosk /usr/share/voxip-kiosk /usr/share/doc/voxip-kiosk
rm -f /usr/local/sbin/voxip-kiosk-ctl
rm -f /etc/sudoers.d/voxip-kiosk
rm -f /etc/systemd/journald.conf.d/voxip-kiosk.conf /etc/systemd/system.conf.d/voxip-watchdog.conf
rm -f /etc/logrotate.d/voxip-kiosk /etc/avahi/services/voxip-kiosk.service
rm -f /etc/chromium/policies/managed/voxip-kiosk.json /etc/chromium-browser/policies/managed/voxip-kiosk.json
rm -f /etc/systemd/zram-generator.conf
rm -f /etc/ssh/sshd_config.d/voxip-kiosk.conf
if [[ -f /etc/X11/Xwrapper.config.voxip-orig ]]; then
  mv /etc/X11/Xwrapper.config.voxip-orig /etc/X11/Xwrapper.config
else
  rm -f /etc/X11/Xwrapper.config
fi
if [[ -f /etc/systemd/system/display-kiosk.service.voxip-disabled ]]; then
  echo "    (de eerdere InfoFlow-kioskservice staat nog als display-kiosk.service.voxip-disabled)"
fi

if [[ $PURGE -eq 1 ]]; then
  echo "==> Configuratie, status, logs en gebruikers verwijderen"
  rm -rf /etc/voxip-kiosk /var/lib/voxip-kiosk /var/lib/voxip-kiosk-network /var/lib/voxip-kiosk-browser /var/log/voxip-kiosk
  rm -f /etc/NetworkManager/system-connections/voxip-eth0.nmconnection /etc/NetworkManager/system-connections/voxip-wlan0.nmconnection
  nmcli connection reload 2>/dev/null || true
  userdel -r kiosk 2>/dev/null || true
  userdel voxip 2>/dev/null || true
  groupdel kiosk 2>/dev/null || true
  groupdel voxip 2>/dev/null || true
else
  echo "    Configuratie bewaard in /etc/voxip-kiosk (verwijderen met --purge)."
  echo "    VoxIP-netwerkprofielen (voxip-eth0/voxip-wlan0) blijven actief."
fi

if [[ -n $PREVIOUS_TARGET ]]; then systemctl set-default "$PREVIOUS_TARGET" >/dev/null 2>&1 || true; fi
for dm in "${DISABLED_DMS[@]}"; do systemctl enable "$dm" >/dev/null 2>&1 || true; done
echo "==> VoxIP Kiosk OS is verwijderd. Herstart de Raspberry Pi om de kiosk te stoppen."