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

PROGNAME=${0##*/}
VERSION="0.2"

error_exit() {
    printf "%s: %s\n" "$PROGNAME" "${1:-"Unknown Error"}" >&2
    exit 1
}

usage() {
    printf "usage: %s %s [-h|--help] <username> <email> \"<pubkey>\"\n" "$PROGNAME" "$VERSION"
}

sub_to_list() {
    sudo -u "$1" sendmail tildeclub-join@lists.tildeverse.org << MAIL
From: $1
Subject: subscribe
MAIL
}

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

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

        printf "adding new user %s\n" "$1"
        newpw=$(pwgen -1B 20)
        sudo useradd -m -g 100 -s /bin/bash "$1" \
            || error_exit "couldn't add user"
        printf "%s:%s\n" "$1" "$newpw" | sudo chpasswd

        printf "sending welcome mail\n"
        sed -e "s/newusername/$1/g" \
            -e "s/newpassword/$newpw/" \
            -e "s/newtoemail/$2/" \
            /usr/local/bin/welcome-email.tmpl \
            | sendmail "$1" "$2" root@tilde.club

        printf "subscribing to mailing list\n"
        sub_to_list "$1"

        printf "adding ssh pubkey\n"
        printf "%s\n" "$3" | sudo tee "/home/$1/.ssh/authorized_keys"

        printf "\nannouncing new user on mastodon\n"
        /usr/local/bin/toot "welcome new user ~$1!"

        printf "cleanup current signup\n"
        sudo sed -i"" "/\b$1\b/d" /var/signups_current

        printf "removing .git from new homedir\n"
        sudo rm -rf /home/$1/.git

        printf "removing skel git README.md\n"
        sudo rm /home/$1/README.md

        printf "fix sorting in /etc/passwd\n"
        sudo pwck -s

        printf "applying disk quota\n"
        sudo xfs_quota -x -c "limit -u bsoft=1G bhard=3G $1"

        printf "making znc user\n"
        /usr/local/bin/znccreate.py "$1" "$newpw" "MaxNetworks=3"

        printf "Adding user to Helpdesk\n"
        /usr/local/bin/helpdesk_admin.sh "add" "$1" "$2"

esac