#!/bin/bash
## Add User on the OSX Command Line
# From: http://wiki.freegeek.org/index.php/Mac_OSX_adduser_script

if [ $# != 1 ]; then
    echo "Usage: ${0##*/} newusername"
    exit 1
fi

sudo true

username=$1
password=$RANDOM$RANDOM$RANDOM$RANDOM

if [ -z "$password" ]; then
    echo Uh-oh. \$password was empty, for some reason.
    exit 2
fi

# echo -n "Is this an administrative user? (y/n) "
# read GROUP_ADD
GROUP_ADD=n # force non-admin for now

if [ "$GROUP_ADD" = n ] ; then
    SECONDARY_GROUPS="staff"  # for a non-admin user
elif [ "$GROUP_ADD" = y ] ; then
    SECONDARY_GROUPS="admin _lpadmin _appserveradm _appserverusr" # for an admin user
else
    echo "You did not make a valid selection!"
fi

# Create a UID that is not currently in use
echo "Creating an unused UID for new user..."

# Find out the next available user ID
MAXID=$(sudo dscl . -list /Users UniqueID | awk '{print $2}' | sort -ug | tail -1)
USERID=$((MAXID+1))


echo "Creating necessary files..."

sudo dscl . -create /Users/$username
sudo dscl . -create /Users/$username UserShell /bin/bash
sudo dscl . -create /Users/$username RealName "$username"
sudo dscl . -create /Users/$username UniqueID "$USERID"
sudo dscl . -create /Users/$username PrimaryGroupID 20
sudo dscl . -create /Users/$username NFSHomeDirectory /Users/$username
sudo dscl . -passwd /Users/$username $password


for n in $SECONDARY_GROUPS ; do
    echo "Adding user to group: $n"
    sudo dseditgroup -o edit -t user -a $username $n
done

# Create the home directory
echo "Creating home directory..."
sudo createhomedir -c 2>&1 | grep -v "shell-init"

echo "Created user #$USERID: $username"