#!/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}"

LC_ALL=C

browser="Mozilla/4.06 [en] (X11; I; Linux 2.0.35 i586)"
newn="${day}.jpg"

echo "debug: daysago=$daysago, i.e. day=$(date -d "$daysago days ago" +%m)"
echo "debug: grep for /geekandpoke/`date -d "$daysago days ago" +%Y`/$(echo $[$(date -d "$daysago days ago" +%m)])/$(echo $[$(date -d "$daysago days ago" +%d)])/[^\"]+"

posturl=$(wget -q -O - "http://geek-and-poke.com/" | grep -oE "/geekandpoke/`date -d "$daysago days ago" +%Y`/$(echo $[$(date -d "$daysago days ago" +%m)])/$(echo $[$(date -d "$daysago days ago" +%d)])/[^\"]+" | head -n 1)

echo "posturl: $posturl"

if [ -n "$posturl" ]; then
	URL=$(wget -O - "http://geek-and-poke.com/$posturl" | sed -nre 's#.+<noscript><img[ \t]*src="(https?://static.squarespace.com[^"]+)".+#\1#p')
	echo "URL: $URL"
	wget -O ${tmp}/out.jpg ${wget_args} --header="Referer: http://geek-and-poke.com/" --user-agent="$browser" $URL

	if [ -s "${tmp}/out.jpg" ]; then
		mv "${tmp}/out.jpg" "${image_dir}/$newn"
		echo "${COMIC[0]}" > "${image_dir}/${day}.title"
		rm -f "${comic_dir}/latest.jpg"
		ln -s "${image_offset}/$newn" "${comic_dir}/latest.jpg"
	fi
fi

rm -rf "${tmp}"