#!/bin/bash

PROD_NAME=
PROD_LST=
MOD_DIR=

# Parameters:
#    $1 = /path/to/zope/instance
# Returns: 
#    echos the /path/location if it finds it

find_zope_products_dir()
{
    if [[ -d "${1}/Products" && -d "${1}/var" && -d "${1}/import" && -d "${1}/Extensions" ]] ; then
	echo ${1}/Products	
    fi
}

# Summary:
# Parameters:
#    $1 = /path/to/zope/instance/Products
# Returns:

symlinks_add()
{
    local RESULT=1

    if [ -d "${1}" ] ; then
	for n in ${PROD_LST} ; do
	    ln -fs ${MOD_DIR}${n} ${1}
        done
	RESULT=0
    fi
    return ${RESULT}
}

# Summary:
# Parameters:
#    $1 = /path/to/zope/instance/Products

symlinks_del()
{
    local RESULT=1

    if [ -d "${1}" ] ; then
	for n in ${PROD_LST} ; do
	    rm -f ${1}/${n}
    	done
	RESULT=0
    fi	
    return ${RESULT}
}

# Main

PROD_DIR=$(find_zope_products_dir ${2})
if [ "${#}" -ne 2 ] ;  then
    echo Usage:
    echo -e "\t$(basename ${0}) add /path/to/zope/instance/"
    echo -e "\t$(basename ${0}) del /path/to/zope/instance/"
    echo -e "\nSummary:"
    echo -e "\tAdd or delete ${PROD_NAME} symbolic links in /path/to/zope/instance"
elif [ -z ${PROD_DIR} ] ; then
    echo "Error: ${2} isn't a zope instance directory."
    exit 1 
elif [ "${1}" = "add" ] ; then
    symlinks_add ${PROD_DIR}
elif [ "${1}" = "del" ] ; then
    symlinks_del ${PROD_DIR}
else
    echo "\"${1}\" is an unknown command. Should be 'add' or 'del'."
fi