#!/bin/sh

if [ "$1" = "" ]; then
	echo "Usage: `basename $0` <4chan thread url>"
	exit 1
fi

echo "4chan downloader"
echo "Downloading untill canceled or 404'd"
LOC=$(echo "$1" | egrep -o '([0-9]*)$' | sed 's/\.html//g' )
echo "Downloading to $LOC"

if [ ! -d $LOC ]; then
	mkdir $LOC
fi

cd $LOC

while [ "1" = "1" ]; do
	TMP=`mktemp`
	TMP2=`mktemp`

	wget -O "$TMP" "$1"
	if [ "$?" != "0" ]; then
		rm $TMP $TMP2
		exit 1
	fi

	egrep 'http://images.4chan.org/[a-z0-9]+/src/([0-9]*).(jpg|png|gif)' "$TMP" -o > "$TMP2"
	#cat "$TMP2" | sed 's!/cb-nws!!g' > "$TMP"

	wget -nc -i $TMP2
	
	rm $TMP $TMP2
	
	echo "Waiting 30 seconds befor next run"
	sleep 30
done;