#!/bin/bash

syntax_error()
{
    echo "Syntax: add <group> [prefix]"
    echo " "
    echo "group:  the initial group"
    echo "prefix: the generated username will begin with this prefix"
    echo " "
    echo "The full name of all new users needs to be in newusers.txt"
    echo "A file named newusers.csv will be generated."
    echo " "
    echo "You need to be root to run this script"

    exit 0
}

#Check that we have at least one argument (group) but not more than two
if [ $# == 0 -o $# -gt 2 ]; then
    syntax_error
fi

#Use the second arg, if given, as PREFIX
PREFIX=""
if [ $# = 2 ]; then
    PREFIX=$2
fi


#Use the first arg as GROUP
GROUP=$1


#You need to be root to run the script
if [ "$(whoami)" != "root" ]; then
    syntax_error
fi


#Check that the the group is existing
TMP=$(grep $GROUP /etc/group| wc -l)
if [ $TMP != 1 ]; then
    syntax_error
fi


#If group folder is not existing, create it
if [ ! -d /home/$GROUP ]; then
    mkdir /home/$GROUP
fi


while read LINE; do
    if [ "$LINE" != "" ]; then
        #Create username and password
        NAME=$LINE
        USER=$PREFIX$(echo $LINE|sed -e's/\ /./g' -e's/å/a/g' -e's/ä/a/g' -e's/ö/o/g' -e's/Å/A/g' -e's/Ä/A/g' -e's/Ö/O/g' -e's/é/e/g' -e's/è/e/g' -e's/-//g' |tr A-Z a-z)
        PASSWORD=$(apg -n 1 -m 7 -x 7 -M nl -E 1l)
        #PASSWORD="skolning"
        ENCPASSWORD=$(perl -e 'print crypt($ARGV[0], "password")' $PASSWORD)

        #Print out the information
        echo " "
        echo "Name: $NAME"
        echo "Username: $USER"
        echo "Password: $PASSWORD"
        echo " "


        #Save the new user to a CSV file
        echo "\"$NAME\",\"$USER\",\"$PASSWORD\"" >> newusers.csv


        #Add the user to the system
        useradd -c "$NAME" -p $ENCPASSWORD -b /home/$GROUP -g $GROUP -m -s /bin/bash -G lp,cdrom,floppy,audio,video,plugdev,fuse,saned $USER

        #Copy quota settings from netuser
        setquota -u -p netuser $USER /home
    fi

done < newusers.txt