#!/bin/bash
#
# Adds an item to the inventory, given the item tag
#
#   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 item "tag", which identifies the item itself as
# well as additional metadata
tag="$1"

inv_path=$( $mypath/getinvpath )
item_path="$mypath/../items"
item_id=$( inv-item-id "$tag" )
item_count=$( inv-item-count "$tag" )
item_file="$item_path/$item_id"
inv_item_file="$inv_path/$item_id"

# use -gt rather than -lt to ensure we'll still fail if $item_count is not an
# integer
[ $item_count -gt 0 ] || {
    echo "Item count required" >&2
    exit 1
}

# does the item we're attempting to access actually exist?
[ -r "$item_file" ] || {
    echo "Item does not exist" >&2
    exit 1
}

# attempt to create the inventory in case it does not exist
mkdir -p "$inv_path" 2>/dev/null

# currently unused
attr=''

# append item(s) to inventory
for i in $( seq 1 $item_count ); do
    echo "$sttr" >> "$inv_item_file"
done