#!/bin/bash

( #start subprocess
  # Wait for lock on /var/lock/.merger-1.lock (fd 200) for 10 seconds
  flock -x -w 3 200
  if [ "$?" != "0" ]; then echo Cannot lock!; exit 1; fi
  echo $$>>/var/lock/.merger-1.lock #for backward lockdir compatibility, notice this command is executed AFTER command bottom  ) 200>/var/lock/.myscript-1.exclusivelock.


sourcevideo="/var/www/kinder_prod/sourcevideo"
sourceaudio="/var/www/kinder_prod/audioupload"
targetdir="/var/www/kinder_prod/processedvideo"
processedaudio="/var/www/kinder_prod/processedaudio"

while true; do

if [ "$(ls -A $sourceaudio)" ]; then

  for i in `ls -1 $sourceaudio/*.wav | xargs -n1 basename`; do
  videoid=`echo $i | awk -F"--" '{print $1}'`
  audioid=`echo $i | awk -F"--" '{print $2}' | awk -F"." '{print $1}'`

  sox $sourceaudio/$i /tmp1/$i rate 44100; mv /tmp1/$i $sourceaudio/$i; chown milkslice:milkslice $sourceaudio/$i || exit 1

  sox -m $sourcevideo/$videoid.mp3 $sourceaudio/$i /tmp1/$videoid--$audioid.mp3 && \
  ffmpeg -y -i /tmp1/$videoid--$audioid.mp3 -strict experimental -acodec aac -bsf:a aac_adtstoasc /tmp1/$videoid--$audioid.aac && \
    ffmpeg -y -i /tmp1/$videoid--$audioid.aac -i $sourcevideo/$videoid.mp4 -bsf:a aac_adtstoasc -preset ultrafast -c copy $targetdir/$videoid--$audioid.mp4 || exit 1
#   mencoder -of lavf -lavfopts format=mp4 -oac copy  -fafmttag 0x706D  \
#-audiofile /tmp1/$videoid--$audioid.aac  -ovc copy $sourcevideo/$videoid.mp4 -o $targetdir/$videoid--$audioid.mp4 || exit 1
    chown milkslice:milkslice $targetdir/$videoid--$audioid.mp4
    mv -f $sourceaudio/$i $processedaudio
    rm /tmp1/$videoid--$audioid.mp3
        rm /tmp1/$videoid--$audioid.aac

    done

fi

sleep 1;
done

) 200>/var/lock/.merger-1.lock   #exit subprocess

FLOCKEXIT=$?  #save exitcode status

exit $FLOCKEXIT

/usr/bin/screen -dm bash -c 'cd /root/merger-prod; /root/merger-prod/merger-prod.sh'