#!/bin/sh

run_user=$(id -u)
if [ "$run_user" -eq 0 ]; then
  n="$1"
  k="$2"
  if [ -n "$n" ]; then
    user_exists=$(id -u "${n}" 2> /dev/null)
    if [ -z "${user_exists}" ]; then
      printf "Adding new user %s\\n" "${n}"
      newpw=$(pwgen -1B 10)
      pwcrypt=$(perl -e "print crypt('${newpw}', 'sa');")
      useradd -m -G users,www-data -p "$pwcrypt" -s /bin/bash "${n}" || exit 1
      sed -e "s/USERNAME/${n}/g" -e "s/PASSWORD/${newpw}/" /etc/templates/welcomemail.tmpl | sendmail "${n}"
    fi
    if [ -n "${k}" ]; then
      printf "%s\\n" "${k}" >> "/home/${n}/.ssh/authorized_keys"
    else
      ${EDITOR:-vim} "/home/${n}/.ssh/authorized_keys"
    fi
  else
    printf "Specify a user.\\n"
  fi
else
  exec sudo "$0" "$@"
fi