#!/bin/sh

# Grab a number that is greater than zero but no greater than the number of
# files in our directory
rand_file()
{
   x=$(($(/usr/bin/dd bs=2 count=1 if=/dev/random of=/dev/stdout| /usr/bin/od -|\
   /usr/bin/sed 's/  */ /'|/usr/bin/cut -d ' ' -f2|/usr/bin/sed 1!d)%$((1+$(/usr/bin/ls|\
   /usr/bin/wc -l)))))
   /usr/bin/echo "${x}"
}

if [ $# = 0 ]
   then /usr/bin/printf "FPM provides a convenient way to use ffplay for audio playback.\nIt accepts the following arguments:\n\n-s: Shuffle songs in the directory randomly.\n\n-l: Play on repeat.\n\n"
   else
case "$@" in

-s)
      file=$(x=$(rand_file);if [ "${x}" = 0 ];then x=1;fi;/usr/bin/ls|sed "${x}"!d)
      /usr/bin/ffplay -autoexit -nodisp "${file}"
      sleep 1 # Prevent fpm from continuously respawning on kill

;;

-l)
      while true
      do /usr/bin/ffplay -autoexit -nodisp "$1"
      done
;;


*)
   /usr/bin/ffplay -autoexit -nodisp "$1"
;;

esac
fi
exit