#! /bin/bash

DIRECTORY=/home/honza/.xplanet

CONFIG_FILE=$DIRECTORY/xplanet.cfg
BUMP_FILE=$DIRECTORY/maps/bump_map.jpg
CLOUD_FILE=$DIRECTORY/maps/cloud_map.jpg

SERVER_ADDRESSES=("http://xplanet.sourceforge.net/clouds/clouds_4096.jpg" "http://www.narrabri.atnf.csiro.au/operations/NASA/clouds_4096.jpg" "http://xplanet.explore-the-world.net/clouds_4096.jpg")

while true;
do
	sec_now=$(date +%s)
	sec_create=$(stat -c %Z $CLOUD_FILE)

	if [ $((sec_now - sec_create)) -ge 3600 ]
	then
		for ADDRESS in ${SERVER_ADDRESSES[*]}
		do
			wget -t 3 -T 15 -O $CLOUD_FILE.tmp $ADDRESS

			if [ $? -eq 0 ]
			then
				mv $CLOUD_FILE.tmp $CLOUD_FILE
				break
			fi
		done

		if [ -e $CLOUD_FILE.tmp ]
		then
			rm $CLOUD_FILE.tmp
		fi
	fi

	month=$(date +%b)

	echo -e "[earth]\nmap=$DIRECTORY/maps/$month/map.jpg\nnight_map=$DIRECTORY/maps/$month/night_map.jpg\ntwilight=10\nbump_map=$BUMP_FILE\nbump_scale=3\ncloud_map=$CLOUD_FILE\ncloud_threshold=64\n" > $CONFIG_FILE

	xplanet -config $CONFIG_FILE -target earth -projection rectangular -num_times 1 -output $DIRECTORY/wallpaper.png -geometry 1366x768 -quality 100

	xfdesktop --reload

	sleep 900
done