#!/bin/bash
#
# Counts number of items in the inventory
#
#   Copyright (C) 2011 Mike Gerwitz
#
#   This file is part of gsgp. This program is free software: you can
#   redistribute it and/or modify it under the terms of the GNU General Public
#   License as published by the Free Software Foundation, either version 3 of
#   the License, or (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

mypath=$( dirname $0 )

. "$mypath/common-inv"

if [ $# -lt 1 ]; then
    echo "Usage: $0 ITEM"
fi

# we should be provided with the id, not the tag
item_id="$1"
inv_item_file="$( $mypath/getinvpath )/$item_id"

# if the file does not exit, then we clearly have 0 of the item in our inventory
if [ ! -r "$inv_item_file" ]; then
    echo 0
    exit
fi

# count the number of items in the inventory
wc -l < "$inv_item_file" || echo 0