#!/usr/bin/env bash
# Remove a user from the server
# Copyright 2021-2023 Bryan C. Roessler

parent="${BASH_SOURCE[0]}"
parent=${parent%/*}

[[ -f $parent/script-functions ]] && . "$parent"/script-functions || exit 1

is_root

echo "This script supports one optional argument, a username"

if [[ $# -eq 1 ]]; then
    user="$1"
else
    prompt user
fi

if ! id -u "$user" &>/dev/null; then
    echo "User $user does not exist"
    exit 1
fi

ask_ok "Remove user $user?" || exit 1

killall -u "$user"

if ask_ok "Backup /home/$user?" && [[ -d /home/$user ]]; then
    if [[ ! -d /mnt/array/home-retired/$user ]]; then 
        btrfs subvolume create /mnt/array/home-retired/"$user" || exit 1
    fi
    rsync -av /home/"$user"/ /mnt/array/home-retired/"$user" || exit 1
fi

smbpasswd -x "$user"

sed -i "/$user/d" /etc/subuid
sed -i "/$user/d" /etc/subgid

if ! userdel -fr "$user"; then
  ask_ok "Userdel failed, kill processes again and retry?" || exit 1
  killall -u "$user" -s SIGKILL
  userdel -fr "$user"
fi

exit $?