#!/bin/bash 
# By Linc 10/1/2004
# Find the latest script at http://linc.homeunix.org:8080/scripts/bashpodder
# Last revision 10/23/2004 - The Lee Colleton/Wari Wahab/Dann Washko version.
# 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!

#VARS
log=podcast.log
conf=bp.conf
playlist=podcast.m3u


#usage function to print usage.
usage()
{
builtin echo -e >&2 \
          "usage: $0 [-p] [-l] [-h] \n -p make playlist \n -l keep log trimmed \n -h print this help"
          exit 1;
}

#getopts for playlist and log trimming. (JCE)
while getopts plh opt
do
    case "${opt}" in
      p)  pl=set;;      # playlist switch
      l)  lt=set;;	# log trim
      h)  hlp=set;;     # show help exit
      \?) usage         # unknown flag
          exit 1;;
    esac
done
shift $(($OPTIND - 1))

#check for help flag.
if [ "${hlp}" == "set" ]; then
usage
fi

# Quickie change to make the script more cron friendly
# Contributed by Wari Wahab
workdir=`dirname ${0}`
cd ${workdir}

# datadir is the directory you want the audio files to be put into
# I used a date string which will create a new directory every day
# Changed to iso date format as suggested by Lee Colleton!
# Updated to work on OSX by Dann Washko
datadir=`date +%Y-%m-%d`

# test for existance of data directory and create if not there
if [ ! -d ${datadir} ]
	then
	mkdir ${datadir}
fi

touch ${log}
# Read the conf file for rss feeds you wish to grab audio from
# Used the sed line from Rodrigo Stulzer to better take care of
# non-standard rss. (JCE)

IFS_T=${IFS}
IFS='
'
I=0
while read url
	do
     		for url in $(wget -q ${url} -O - | sed 's/<enclosure/\n<enclosure/g' | grep "<enclosure " | tr \' \" | sed -n 's/.*url="\([^"]*\)".*/\1/p')
        		do
	                        if ! grep "${url}" ${log} > /dev/null
        	                then
        	               		wget -q -P ${datadir} ${url}
                        		echo ${url} >> ${log}
                		fi
				#save all urls for uptodate log file
				#if -l flag is thrown
				if [ "${lt}" == "set" ]; then		
 					NEWLOG[${I}]=${url}
                			((I += 1))
 				fi
     			done
               
	done < ${conf}
IFS=${IFS_T}

#Write a new log file containing only urls in current rss feeds.
#if -l flag is thrown.
if [ "${lt}" == "set" ]; then		
	/bin/rm ${log}
	for urllog in "${NEWLOG[@]}"; do
		echo ${urllog} >> ${log}
	done
fi
# That's it!
# Oh yeah, you probably want an m3u playlist (at least I do)
# added a switch for making the play list (JCE)
if [ "${pl}" == "set" ] ; then
ls ${datadir} | grep -v m3u > ${datadir}/${playlist}
fi