#!/bin/bash

if [ $USER != "root" ]
then
   echo "Note: You are required to run this program as root."
   exit 1
fi

if [ "$#" -eq 0 ] # if no arguments after command
then
 echo "You must enter an argument" >&2
 echo "USAGE: $0 [-i {input-path}]" >&2
 exit 2
fi

outputFlag="n"
while getopts i: name
do
 case $name in
   i) inputFile=$OPTARG ;;
   :) echo "Error: You need text after options requiring text"
       exit 1 ;;
   ?) echo "Error: Incorrect option"
        exit 1 ;;
 esac
done

if [ ! -f $inputFile ]
then
  echo "The file pathname "$inputFile" is empty or does not exist" >&2
  exit 2
fi

set $(sed 's/ /+/g' $inputFile) # temporarily convert spaces to + for storing lines as positional parameters

for x
do
    userPassWd=$(date | md5sum | cut -d" " -f1)
    useradd -m -c "$(echo $x | cut -d":" -f2 | sed 's/+/ /g')" -p $userPassWd $(echo $x | cut -d":" -f1)
    mail -s "Server Account Information" $(echo $x | cut -d":" -f3) <<+
    Here is your server account information:
    servername: placeholder.servername.on.ca
    username: $(echo $x | cut -d":" -f1)
    password: $userPassWd
    Regards,
    IT Department
+
done

echo -e "nnAccounts have been creatednn"
exit 0