#!/bin/bash
if [ "$1" = "--help" ]; then
echo "
# By Linc 10/1/2004
# Find the latest script at http://linc.homeunix.org:8080/scripts/bashpodder
# Revision 1.2 09/14/2006 - 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!

OPTIONS
	--help	Show help text
	-n	Add new podcast interactively
	-u [url...] Add new podcast automatically

(New Podcasts will only download the most recent episode,
 to select other podcasts, delete that line from the 'podcast.log'
 file included in your BashPodder directory)
"
exit 0
fi

# ************************************************************************

# Number of episodes to download from a new feed
downnum=3

# datadir is the directory you want podcasts saved to:
datadir=/home/$USER/podcasts

# Pass the first argument to the 'arg' variable.
arg="$1"

# Check if a new podcast will be added
# bp.temp is used to hold the feed url before it can be added bp.conf
# so that any new podcasts are not accidentally added to podcast.log
# without downloading the podcast
if [ "$arg" = "-n" ]; then
    echo "Please enter the url of the new podcast feed:"
    read feedurl
    echo $feedurl > bp.temp
  elif [ "$arg" = "-u" ]; then
    echo $2 > bp.temp
    arg="-n"
  else
    cat bp.conf > bp.temp
fi

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

# create datadir if necessary:
mkdir -p $datadir

# Delete any temp file:
rm -f temp.log

# Read the bp.conf file and wget any url not already in the podcast.log file:
getpodcast ()
{
while read podcast
	do
	file=$(xsltproc parse_enclosure.xsl $podcast 2> /dev/null || 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" podcast.log > /dev/null && [ "$arg" != "-n" ]
			then
			wget -t 10 -U BashPodder -c -q -O $datadir/$(echo "$url" | awk -F'/' {'print $NF'} | awk -F'=' {'print $NF'} | awk -F'?' {'print $1'}) "$url"
		fi
		done
	done < bp.temp
# Move dynamically created log file to permanent log file:
cat podcast.log >> temp.log
cat temp.log > temp2.log
if [ "$arg" = "-n" ]; then
    cat bp.conf >> bp.temp
    sort bp.temp | uniq > bp.conf
    sed -e "1,${downnum}d" temp.log | sort | uniq > podcast.log
  else
    sort temp.log | uniq > podcast.log 
fi
rm temp.log temp2.log bp.temp
}

# This calls the previous function. If it is invoked with an option to 
# add a new podcast, the feed is downloaded, then re-run to download
# the newest podcast in the feed along with any others which may be
# available
getpodcast

if [ "$arg" = "-n" ]; then
    cat bp.conf > bp.temp
    arg=""
    getpodcast
fi

# Create an m3u playlist:
ls $datadir | grep -v m3u > $datadir/podcast.m3u