#!/bin/bash

file=/dev/shm/btc_stats
fileURL=http://api.bitcoincharts.com/v1/weighted_prices.json

function update_file {
	wget --quiet $fileURL -O $file
#echo WILL_WGET
}

if [ -s $file ]; then
	#update if older than 1h
	age=`stat -c %Y $file`;
	now=`date +%s`;
	diff=$(($now - $age));
	if [ $diff -gt 3600 ]; then
		update_file & #Do not hang the result
	fi;

	#Fucking ugly, but works
	content=`cat $file | python -mjson.tool | grep -A3 EUR | tail -n3 | cut -d':' -f2 | cut -d'"' -f2`;

	p24h=`echo "$content" | sed -n 1p | cut -d. -f1`
	p7d=`echo "$content" | sed -n 3p`
	p30d=`echo "$content" | sed -n 2p`

	graph=`sparklines $p30d $p7d $p24h`
	echo $graph [$p24h€] #dont want sparklines newline
else
	update_file & #Will surely wait for iface
fi