#!/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}"

export LANG=C
export LC_ALL=C
export LC_TIME=C

SEARCH_DATE=`date -d "$daysago days ago 00:00:00" +"%B %d, %Y"`

echo Search for: $SEARCH_DATE

SYM=$(wget ${wget_args} -O - "http://www.smbc-comics.com/comic/archive" | sed -nre "s#.+<option value=\"([^\"]+)\">${SEARCH_DATE}.+#\1#p")
echo Symlink: $SYM

if [ -n "$SYM" ]; then

	IMG=$(wget ${wget_args} -O - "http://www.smbc-comics.com/comic/${SYM}" | sed -nre 's#.+src="(http://www.smbc-comics.com/comics/[^"]+).+#\1#p')

	if [ -n "$IMG" ]; then
		wget ${wget_args} -O "$day.png" "$IMG"
		if [ -s "${day}.png" ]; then
			mv ${day}.png "${image_dir}/$day.png"
			rm -f "${comic_dir}/latest.png"
			ln -s "${image_offset}/$day.png" "${comic_dir}/latest.png"
		fi
	fi

fi

echo "tmp"
rm -rf "${tmp}"
echo "Done"