#!/bin/bash

function usage() {
  echo "USAGE: $0 distribution platform-name [platform-state [other-argument]]";
  exit 1;
}

if [ -z "$1" ]; then
  echo "ERROR: must specify a distribution";
  usage;
fi
DISTRIBUTION=$1

if [ -z "$2" ]; then
  echo "ERROR: must specify a platform name";
  usage;
fi
PLATFORM_NAME=$2

PLATFORM_STATE='default_platform_state'
if [ ! -z "$3" ]; then
  PLATFORM_STATE=$3
fi

OTHER_ARGUMENT='default_value'
if [ ! -z "$4" ]; then
  OTHER_ARGUMENT=$4
fi

echo "arguments: DISTRIBUTION=$DISTRIBUTION PLATFORM_NAME=$PLATFORM_NAME PLATFORM_STATE=$PLATFORM_STATE OTHER_ARGUMENT=$OTHER_ARGUMENT"