#!/bin/sh

#DESTDIR=build

CONFIGFILE=${DESTDIR}/etc/sgt-puzzles.conf

disenable() {
	game=$1
	status=$2
	
	var=DESKTOP$game
	[ -r $CONFIGFILE ] && . $CONFIGFILE
	varval="\$$var"
	varval=`eval "echo $varval"`
	if [ "$varval" = "$status" ]; then
		echo "$game is already $status."
		return
	fi
	tempfile=`mktemp -t sgt-puzzles.conf.XXXXXXXXXX`
	if [ $? -ne 0 ]; then
		echo "Unable to create temporary file."
		exit 1
	fi
	if [ -r $CONFIGFILE ]; then
		grep -v "^${var}\\s*[=]" $CONFIGFILE > $tempfile
	fi
	echo "${var}=$status" >> $tempfile
	mv $tempfile $CONFIGFILE
	echo "$game $status. Remember to run update."
}

do_default() {
	game=$1
	var=DESKTOP$game
	if [ ! -r $CONFIGFILE ]; then
		echo "$game is already not configured."
		return
	fi
	grep "^${var}\\s*[=]" $CONFIGFILE >/dev/null 2>&1
	if [ $? -eq 1 ]; then
		echo "$game is already not configured."
		return
	fi
	tempfile=`mktemp -t sgt-puzzles.conf.XXXXXXXXXX`
	if [ $? -ne 0 ]; then
		echo "Unable to create temporary file."
		exit 1
	fi
	grep -v "^${var}\\s*[=]" $CONFIGFILE > $tempfile
	mv $tempfile $CONFIGFILE
	echo "$game unconfigured. Remember to run update if needed."
}


do_update() {
	outdir=${DESTDIR}/usr/share/applications
	
	force=0
	removeall=0
	haslauncher=0
	
	if [ -e ${DESTDIR}/usr/share/sgt-puzzles/has-launcher ]; then
		haslauncher=1
	fi
	
	[ -r $CONFIGFILE ] && . $CONFIGFILE
	
	if [ "$1" = "force" ]; then
		force=1
	fi
	
	if [ "$1" = "removeall" ]; then
		removeall=1
	fi
	
	exec 7<${DESTDIR}/usr/share/sgt-puzzles/gameinfo
	
	cont=0
	while [ $cont -eq 0 ]; do
		read -u 7 gname && read -u 7 gcommand && read -u 7 gcomment
		cont=$?
		if [ $cont -eq 0 ]; then
			outfile=${outdir}/sgt-puzzles/${gcommand}.desktop
			var=DESKTOP${gcommand}
			varval="\$$var"
			varval=`eval "echo $varval"`
			if [ $removeall -eq 1 -o "$varval" = "disabled" -o \( $haslauncher -eq 1 -a "$varval" != "enabled" \) ]; then
				if [ -e $outfile ]; then
					rm $outfile
				fi
			elif [ $force -eq 1 -o ! -e $outfile ]; then
				cat > $outfile <<END
[Desktop Entry]
Name=${gname}
Comment=${gcomment}
Encoding=UTF-8
Version=1.0
Type=Application
Exec=/usr/games/${gcommand}
Icon=sgt-puzzles/${gcommand}
Terminal=false
Categories=Game;
SingleInstance=true
StartupNotify=true
END
			fi
		fi
	done
}

case $1 in
	enable|disable)
		disenable $2 ${1}d
		;;
	default|update)
		do_$1 $2
		;;
	*)
		exename=`basename "$0"`
		if [ "$exename" = "" ]; then
			exename=sgt-puzzles-desktop
		fi
		cat <<END
Usage: $exename {enable|disable|default} <game>
   or: $exename update [force|removeall]

The first variant enables or disables the desktop icon for a
specific game, or removes configuration for one so that the
default is used for that game.
The second variant updates the actual desktop files based on
the configuration. If the "force" parameter is given, existing
desktop files are rewritten; if the "removeall" parameter is
given, all the desktop files are removed (until next update).
END
		;;
esac