# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
#
# burncd handler script for backupninja
#
getconf backupdir /var/backups/makecd
getconf exclude
getconf target
getconf burnertype cd
getconf system no
getconf isoonly yes
getconf imagefile backup.iso
getconf device
getconf nicelevel 0
getconf ionicelevel

## Check config

# Check that the ionicelevel is valid
if [ -n "$ionicelevel" ] && echo "$ionicelevel" | grep -vq "^[0-7]$"; then
   fatal "The value of ionicelevel is expected to be either empty or an integer from 0 to 7. Got: $ionicelevel"
fi

# Only use ionice if ionicelevel is not empty
nice="nice -n $nicelevel"
if [ -n "$ionicelevel" ]; then
   nice="ionice -c2 -n $ionicelevel $nice"
fi

# define needed executables:
MKISOFS="/usr/bin/genisoimage"
GROWISOFS="/usr/bin/growisofs"
CDRECORD="/usr/bin/wodim"
CDRDAO="/usr/bin/cdrdao"
DVDINFO="/usr/bin/dvd+rw-mediainfo"

# create backup dirs and check existence of progs.

[ -d $backupdir ] || mkdir -p $backupdir
[ -d $backupdir ] || fatal "Backup directory '$backupdir'"
[ -e "$target" ]  || fatal "target does not exist "

[ -x "$MKISOFS" ]   || debug 3 "echo executable $MKISOFS not present"
[ -x "$GROWISOFS" ] || debug 3 "echo executable $GROWISOFS not present"
[ -x "$CDRECORD" ]  || debug 3 "echo executable $CDRECORD not present"
[ -x "$CDRDAO" ]    || debug 3 "echo executable $CDRDAO not present"

if [ "$isoonly" == "no" ]; then
   [ -e $device ] || fatal "No Burner device available"
fi

outputfile="$backupdir/$imagefile"
execstr="$nice $MKISOFS --quiet -R -o $outputfile "

str=""
# excludes
for i in $exclude; do
   str=" -x ${i}$str"
done

debug 0 "echo $str "
execstr="${execstr} $str $target "
debug 0 "echo $execstr "

output=` $execstr 2>&1 `
code=$?
if [ "$code" == "0" ]; then
   debug "$output"
   info "Successfully finished creation of iso"
else
   warning "$output"
   warning "Failed to create iso"
fi

if [ "$isoonly" == "no" ]; then

   if [ "$burnertype" == "cd" ]; then
      # burning iso to CD
      $CDRECORD -v gracetime=2 dev=$device speed=8 -dao -data $outputfile
      code=$?
      if [ "$code" == "0" ]; then
         debug "$output"
         info "Successfully burned CD"
      else
         warning "$output"
         warning "Failed to create CD"
      fi
   fi
   if [ "$burnertype" == "dvd" ]; then
      # burning iso dvd
      $GROWISOFS -speed=2 -Z $device=$outputfile -use-the-force-luke=notray -use-the-force-luke=tty
      code=$?
      if [ "$code" == "0" ]; then
         debug "$output"
         info "Successfully burned DVD"
      else
         warning "$output"
         warning "Failed to create DVD"
      fi
   fi
fi
return 0