#!/bin/bash
# ---------------------------------------------------------------------------
# makeuser - tilde.team new user creation
# Usage: makeuser [-h|--help] <username> <email> "<pubkey>"
# ---------------------------------------------------------------------------

PROGNAME=${0##*/}
VERSION="0.1"

error_exit() {
  echo -e "${PROGNAME}: ${1:-"Unknown Error"}" >&2
  exit 1
}

usage() {
  echo -e "usage: $PROGNAME [-h|--help] <username> <email> \"<pubkey>\""
}

[[ $(id -u) != 0 ]] && error_exit "you must be the superuser to run this script."

case $1 in
  -h | --help)
    usage; exit ;;
  -* | --*)
    usage; error_exit "unknown option $1" ;;
  *)
    [[ $# -ne 3 ]] && error_exit "not enough args"
    echo "adding new user $1"
    newpw=$(pwgen -1B 10)
    pwcrypt=$(perl -e "print crypt('${newpw}', 'sa');")
    useradd -m -g 100 -p $pwcrypt -s /bin/bash $1 || exit 1

    sed -e "s/newusername/$1/g" -e "s/newpassword/$newpw/" email.tmpl | sendmail $1 $2 sudoers@tilde.team

    echo "$3" | tee /home/$1/.ssh/authorized_keys
    toot "welcome new user ~$1!" ;;
esac