#!/bin/bash

file=$1
# Check that the user provided a file as the first argument
if [[ ! -f $1 || -z $1 ]]
then
echo "No argument supplied. Please enter the file you wish to read"
read csvFile
file=$csvFile
if ! [[ $? == 0 ]]
then
echo "Failed to read file. Exiting.."
exit 1
else
echo "File successfully read."
fi
fi

IFS=";"
while read name birthDate group folder
do
echo "Column 1 value: $name"

#Checking if user exists
id -u $name
if ! [[ $? == 0 ]]
then
echo "User doesn't exists.. Creating user."
else
echo "User already exists"
fi

#Calculating the default username
$username=$(echo $name | head -c 1)
lastname=$(echo $col1 | cut -d '@' -f1)
lastname=$(echo $lastname | cut -d '.' -f2)

#Calculating the default pass
newPass=$(date --date="$birthDate" +%m%Y)
echo "Your password is: $newPass"

#Creating user
sudo useradd -d /home/$name -m -s /bin/bash -p $newPass $name
if ! [[ $? == 0 ]]
then
echo "Creation of user $name failed. Aborting."
#exit 2 UNCOMMENTME
else
echo "Creation of user $name successful."
fi

#Setting password to change on login
sudo chage -d 0 $name

#Checking if the group exists
id -g $group
if ! [[ $? == 0 ]]
then
echo "Group doesn't exists.. Creating group."
else
echo "Group already exists"
fi

#Creating the group
sudo groupadd $group
if ! [[ $? == 0 ]]
then
echo "Failed to create group."
else
echo "Group created succesfully"
fi

#Adding user to the group
sudo useradd -g $group $name
if ! [[ $? == 0 ]]
then
echo "Failed to add user: $col1 to the group"
else
echo "$col1 added to group $col3"
fi

#Creating group folder
if [ -d $folder ]; then
  mkdir -p $folder
fi
if ! [[ $? == 0 ]]
then
echo "Created group folder $folder successfully"
else
echo "Group folder $folder failed to create"
fi

#Changing file permissions for gorup directory
chgrp -R $group $folder
if ! [[ $? == 0 ]]
then
echo "$group owns $folder"
else
echo "failed to assign $folder to $group"
fi
chmod -R 770 $folder
if ! [[ $? == 0 ]]
then
echo "$folder now has full group permissions"
else
echo "$folder permissions error"
fi

done < $file