#!/bin/bash

if [ -z "$1" -o ! -d "$1" ]; then
    echo "Usage: $0 <top-directory> [<days ago>]" 1>&2
    exit 1
fi

top="${1}"
shift

source "${top}/etc/settings.sh"
tmp="$(mktemp -d)"
cd "${tmp}"

server="http://dilbert.com"
webaddress="$server/strip/$(date -d"$daysago days ago" +%Y-%m-%d)"
browser="Mozilla/4.06 [en] (X11; I; Linux 2.0.35 i586)"
newn="${day}.gif"

echo "Search $webaddress"
STRIP=$(curl "$webaddress" | sed -n -re 's#.+class="(.+ |)img-comic[" ].+src="([^"]+).+#\2#p')
echo "Strip URL $STRIP"

if [ -n "$STRIP" ]; then
	wget ${wget_args} --user-agent="$browser" "$STRIP" -O dilbert.gif
	mv "dilbert.gif" "${image_dir}/$newn"
	rm -f "${comic_dir}/latest.gif"
	ln -s "${image_offset}/$newn" "${comic_dir}/latest.gif"
fi

cd ..
rm -rf "${tmp}"