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

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

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

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

sub_to_list() {
  echo "
From: $1
Subject: subscribe
" | sudo -u $1 sendmail thunix-join@lists.tildeverse.org
}

case $1 in
  -h | --help)
    usage; exit ;;
  -* | --*)
    usage; error_exit "unknown option $1" ;;
  *)
    [[ $# -ne 3 ]] && error_exit "not enough args"

    $(sudo grep -qiw $1 $BANNED) && error_exit "$1 is on the ban list!"

    if id $1 > /dev/null 2>&1; then
	exit 0
    fi

    echo "adding new user $1"
    newpw=$(pwgen -1B 10)
    sudo useradd -m -g 100 -s /usr/bin/bash $1 \
        || error_exit "couldn't add user"
    echo "$1:$newpw" | sudo chpasswd

    echo "sending welcome mail"
    sed -e "s/newusername/$1/g" -e "s/newpassword/$newpw/" ./include/email.tmpl \
        | /usr/sbin/sendmail $1 $2 root

    echo "subscribing to mailing list"
    sub_to_list $1

    echo "removing .git and README.md from new homedir"
    sudo rm -rf /home/$1/.git
    sudo rm -rf /home/$1/README.md

    echo "adding ssh pubkey"
    echo "$3" | sudo tee /home/$1/.ssh/authorized_keys

    echo "adding account recovery"
    sudo mkdir -p --mode=700 /home/$1/.thunix
    echo $2 | sudo tee /home/$1/.thunix/recovery
    sudo chmod 600 /home/$1/.thunix/recovery
    sudo chown -R $1 /home/$1/.thunix

    echo "making znc user"
#    znccreate.py "$1" "$newpw"

    echo "announcing new user on mastodon"
#    toot "welcome new user ~$1!"

esac