#!/bin/bash 
# By Linc 10/1/2004
# Find the latest script at http://linc.homeunix.org:8080/scripts/bashpodder
# Last revision 12/14/2004 - Many Contributers!
# If you use this and have made improvements or have comments
# drop me an email at linc dot fessenden at gmail dot com
# I'd appreciate it!

#debug
#set -x

# Make script crontab friendly:
cd $(dirname $0)

#set up directory names here so we can change them without
#having to re-write the whole script

# datadir is the directory you want podcasts saved to:
datadir=$(date +%Y-%m-%d)

# incoming is the directory incoming poscasts are saved to before completion
incoming="incoming"

#In Selfish mode dont relauch bittorrent to seed
#set to 0 to be a selfish shellfish
selfish=1

#logfiles
podcastlog="podcast.log"
temppodcastlog="temp.log"
torrentlog="torrent.log"

#configuration file
config="bp.conf"

#temporary list of torrent files
torrentlist="torrentlist"

# Check for and create datadir if necessary:
if test ! -d $datadir
        then
        mkdir $datadir
fi

# Check for and create incoming directory
if test ! -d $incoming
	then
	mkdir $incoming
fi		

# Delete any temp file:
rm -f $temppodcastlog
rm -f $torrentlog

# Read the bp.conf file and wget any url not already in the podcast.log file:
while read podcast
	do
	
	file=$(wget -q $podcast -O - | tr '\r' '\n' | tr \' \" | sed -n 's/.*url="\([^"]*\)".*/\1/p')
	
	for url in $file
		do
		
		#echo $url >> temp.log
		if ! grep "$url" $podcastlog > /dev/null
			then
			
			#lets get the real url in the case of dynamically generated feeds like lugradio
			realurl=`curl -s -I -L -w %{url_effective} --url $url | tail -n 1`
			
			#we'll need filename to allow us to move the poscast into datadir
			filename=`echo $realurl | awk -F / '{print $NF}'`
			
			#file is a torrent so hand off to btpodder.py
			if [ `echo $filename | grep ".torrent"` ]
				then
				audiofilename=`echo $filename | sed 's/\.torrent//'`
				#btpodder does the hard work of getting the file and then exiting
				screen -D -m ./btpodder.py --url $realurl --saveas $incoming/$audiofilename
				
				#if we've succeeded add file to podcast log and move to datadir
				if [ $? == 0 ]
					then
					mv $incoming/$audiofilename $datadir
					echo $url >> $podcastlog
					#create log for relaunching torrents
					echo -n $realurl >> $torrentlog
					echo " "$datadir/$audiofilename >>  $torrentlog
				fi
				
			#not a torrent so use wget 
			else
				wget -q -c -P $incoming $realurl
			
				#if we succeeded in the download add the file to the log
				if [ $? == 0 ]
					then
					mv $incoming/$filename $datadir
					echo $url >> $podcastlog
				fi
			fi
		fi
		done
	done < $config

# Move dynamically created log file to permanent log file:
cat $podcastlog > $temppodcastlog
sort $temppodcastlog | uniq > $podcastlog
rm $temppodcastlog

# Create an m3u playlist:
#slightly more comlicatd to deal with
#geeknewscentral who put their stuff in directories
(
cd $datadir
find . -name \*.mp3 > podcast.m3u
find . -name \*.ogg  >> podcast.m3u
)

#If we are not in selfish mode relaunch the torrents to seed
if [ $selfish != 0 ]
	then
	#we only need to do the following if we actually encountered
	#some torrents
	if [ -e $torrentlog ]
		then
		#use contents of torrentlog as positional parameters
		set `cat $torrentlog`
	
		while [ $# != 0 ]
			do
			url=$1
			file=$2
			screen -d -m btdownloadheadless.py --url $url --saveas $file
			shift
			shift		
			done
	fi
fi