#!/bin/busybox ash
# tce-size.sh - Copyright 2010 Brian Smith
# Some edits by Curaga
# Edited for use by appbrowser by roberts
# Licensed under GPLv2 License
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
. /etc/init.d/tc-functions
useBusybox

K=1024
M=$(($K * $K))

Fixed3Div()
{
	# divide $1 by $2. Return result to 3 decimal places, no rounding.
	printf "%d.%03d\n" $(($1 / $2)) $(((($1 % $2) * 1000) / $2))
}

get_dependencies()
{

for F in `sed 's/ //g' "$app".tree | sort -f | uniq`; do
      size=`grep -w "^$F" sizelist  | awk '{print $2}'`
      case $size in
      [0-9]*)
	 sizemb=`Fixed3Div $size $M`
	 if [ -f "$localtce"/optional/"$F" ]; then
		 totalsize_installed=$(($totalsize_installed + $size))
		 echo -n "  "
		 printf "%-40s" $F
		 printf " %10d, %6.2f MB\n" $size $sizemb
	 else
		 echo -n "+ "
		 totalsize_needed=$(($totalsize_needed + $size))
		 printf "%-40s %10d, %6.2f MB\n" $F $size $sizemb
	 fi
      ;;
      *)
	 printf "%-40s Error, not found \n" $F
      ;;
      esac
done
}

app=$1

if [ -n "$app" ]; then
   app=${app%.tcz}
   app="$app.tcz"

   localtce=/etc/sysconfig/tcedir

   cd /tmp

   if [ ! -f sizelist ]; then
	tce-fetch.sh sizelist.gz || exit 1
	gunzip -f sizelist.gz
	touch sizelist
   else # Check if the file is older than 5 hours
	age=$((`date +%s` - `date -r sizelist +%s`))
	if [ $age -ge 18000 ]; then
		tce-fetch.sh sizelist.gz || exit 1
		gunzip -f sizelist.gz
		touch sizelist
	fi
   fi
   tce-fetch.sh "$app".tree >/dev/null 2>&1 || echo "$app" > "$app".tree

   totalsize_needed=0
   totalsize_installed=0

   get_dependencies $app

   totalsize=$(($totalsize_needed + $totalsize_installed))
   totalsizemb=`Fixed3Div $totalsize $M`
   totalsize_neededmb=`Fixed3Div $totalsize_needed $M`
   totalsize_installedmb=`Fixed3Div $totalsize_installed $M`

   printf "\n  %-40s %10d, %6.2f MB\n" "Total size (bytes)" $totalsize $totalsizemb
   printf "+ %-40s %10d, %6.2f MB\n" "Indicates need to download" $totalsize_needed $totalsize_neededmb
else
   echo "Specify extension in command line:"
   echo "Example:   $0 firefox.tcz"
fi