#!/bin/bash
set -euo pipefail
USER=${1:-}
if [[ -z "$USER" ]]; then
  echo "Usage: $0 <username>" >&2
  exit 1
fi
SAN_USER=$(echo "$USER" | tr -cd 'A-Za-z0-9_-')
if [[ -z "$SAN_USER" ]]; then
  echo "Invalid username." >&2
  exit 1
fi
KEY=$(php /var/www/zhtp/genkey.php "$SAN_USER")
echo "$KEY" > "users/${SAN_USER}.key"
echo "✅ Registered ${SAN_USER} to sovereign mesh."