#!/bin/bash
# Create a named PVE admin user (Administrator role) so root@pam can be
# reserved for emergencies. Generates a random initial password, printed
# once - change it and enable TOTP on first login (Datacenter -> Permissions
# -> Two Factor, or the user icon menu in the top right).
#
# Idempotent - if the user already exists, does nothing (won't reset an
# existing password). Run as root on the PVE host.
#
# Usage: ./create-admin-user.sh <username>   (realm is always @pve)
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=lib/common.sh
source "${SCRIPT_DIR}/lib/common.sh"
require_root

USERNAME="${1:-}"
if [ -z "$USERNAME" ]; then
    echo "Usage: $0 <username>" >&2
    exit 1
fi

USERID="${USERNAME}@pve"

if pveum user list --output-format json 2>/dev/null | grep -q "\"${USERID}\""; then
    echo "${USERID} already exists - not touching password or role. Skipping."
    exit 0
fi

PASSWORD="$(openssl rand -base64 24)"

pveum user add "$USERID" --password "$PASSWORD" --comment "Named admin account, created by create-admin-user.sh"
pveum acl modify / --users "$USERID" --roles Administrator

echo
echo "Created ${USERID} with the Administrator role."
echo "Initial password (shown once - not logged anywhere): ${PASSWORD}"
echo
echo "Next steps (do these before relying on this account):"
echo "  1. Log in as ${USERID} and change the password."
echo "  2. Enable TOTP/2FA for ${USERID} (and for root@pam)."
echo "  3. Reserve root@pam for emergencies only from here on."