#!/bin/bash
# By Linc 10/1/2004
# Find the latest script at http://linc.homeunix.org:8080/scripts/bashpodder
# Last revision 11/17/2004 - 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!

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

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

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

# Lock this section
# if another bashpodder is going, drop out
if ! dotlockfile -r 0 -p .bashpodder.lock 
then
   exit 0
fi

# touch the bashpodder.log file, so it won't complain that it doesn't exist
# when it first runs.
touch bashpodder.log

# if it doesn't exist, its a recipe for disaster! check!
if ! [ -w bashpodder.log ]
then
   echo "Could not write to bashpodder.log! Exiting..."
   exit 1
fi

# clear the todo list
echo -n > all_rss.log

# if it doesn't exist, its a recipe for disaster! check!
if ! [ -w all_rss.log ]
then
   echo "Could not write to all_rss.log! Exiting..."
   exit 1
fi

# Read the bp.conf file and wget any url not already in the bashpodder.log file:
wget --quiet --input-file=bp.conf --output-document=all_rss.log
file=$(cat all_rss.log | tr '\r' '\n' | tr \' \" | sed -n 's/.*url="\([^"]*\)".*/\1/p')

# Now process the 'todo' list
for url in $file
do
   if ! grep "$url" bashpodder.log > /dev/null 
   then
      if wget --quiet --tries=1 --limit-rate=25k --mirror --directory-prefix=$datadir $url
      then
         # 'commit' the transaction to the bashpodder.log
         echo $url >> bashpodder.log
      fi
   fi

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

# Remove the dotlock file, allow other bashpodders to do the above
# ie wget etc
dotlockfile -u .bashpodder.lock

# Finally, if the btlaunchmany isn't running, run it now.
# This will mean this particular script instance will never end,
# but the script can be safely re-run (eg via crontab)

# try to lock the dotlock once. if not, then torrents must be going.
if dotlockfile -r 0 -p .bashpodder-torrent.lock
then
   btlaunchmany --max-download-rate 25 .  > /dev/null
   # remove dotlockfile (not actually important, the pid check will 
   # handle leftover dotlocks, but nice to be clean)
   dotlockfile -u .bashpodder-torrent.lock
fi