#!/bin/bash

function do_patch() {
	for f in ../patches/*.patch ; do
		patch -p0 -N -i $f
	done
}

function do_unpatch() {
	local patchlist=""
	for f in ../patches/*.patch ; do
		patchlist="$f $patchlist"
	done
	for f in $patchlist ; do
		patch -p0 -R -i $f
	done
}

function build_icons() {
	if [ "$DISPLAY" = "" ]; then
		echo
		echo "ERROR: Need an X server to build the icons. (DISPLAY is not set)"
		exit 1
	fi
	CC=cc CFLAGS= make
	make -C icons illumeicons
	make clean
}

function build() {
	cd puzzles
	do_patch
	./mkfiles.pl
	if [ ! -e icons/loopy-86d24.png ]; then
		build_icons
	fi
	if [ ! -e icons/loopy-86d24.png ]; then
		echo
		echo "ERROR: Failed to build icons."
		exit 1
	fi
	local MYCFLAGS="$CFLAGS"
	MYCFLAGS="$MYCFLAGS -DSLOW_SYSTEM"
	MYCFLAGS="$MYCFLAGS -DSMALL_SCREEN"
	MYCFLAGS="$MYCFLAGS -DPORTRAIT_SCREEN"
	MYCFLAGS="$MYCFLAGS -DSTYLUS_BASED"
	#MYCFLAGS="$MYCFLAGS -DVIVID_COLOURS"
	CFLAGS="$MYCFLAGS" make
	do_unpatch
	cd ..
}

function make_destdir() {
	if [ -e $DESTDIR ]; then
		rm -rf $DESTDIR
	fi
	if [ -e $DESTDIR ]; then
		echo
		echo "ERROR: Unable to remove $DESTDIR dir."
		exit 1
	fi
	mkdir $DESTDIR
	if [ ! -d $DESTDIR ]; then
		echo
		echo "ERROR: Unable to create $DESTDIR dir."
		exit 1
	fi
}

function install() {
	if [ "$DESTDIR" = "" -o "$DESTDIR" = "." -o "$DESTDIR" = "build" ]; then
		DESTDIR=build
		export DESTDIR
		make_destdir
	fi
	if [ "$STRIP" = "" ]; then
		STRIP=strip
	fi
	mkdir -p $DESTDIR/etc $DESTDIR/usr/bin $DESTDIR/usr/games
	mkdir -p $DESTDIR/usr/share/sgt-puzzles
	mkdir -p $DESTDIR/usr/share/pixmaps/sgt-puzzles
	mkdir -p $DESTDIR/usr/share/applications/sgt-puzzles
	cd puzzles
	make DESTDIR=../$DESTDIR prefix=/usr install
	cd ..
	echo "copying package files"
	sed 's/Portions copyright /Portions copyright Frode Austvik, /' < puzzles/LICENCE > $DESTDIR/usr/share/sgt-puzzles/LICENSE
	cp gameinfo $DESTDIR/usr/share/sgt-puzzles/
	cp sgt-puzzles.conf $DESTDIR/etc/sgt-puzzles.conf
	cp sgt-puzzles-desktop $DESTDIR/usr/bin/
	echo "stripping executables and copying icons"
	for f in $DESTDIR/usr/games/* ; do
		$STRIP $f
		fn=`basename $f`
		cp puzzles/icons/$fn-86d24.png $DESTDIR/usr/share/pixmaps/sgt-puzzles/$fn.png
	done
	echo "copying packaging control files"
	mkdir $DESTDIR/CONTROL
	cp ipkg/conffiles ipkg/postinst ipkg/prerm $DESTDIR/CONTROL/
	PUZZLESVERSION=`svnversion -c puzzles | sed s/.*\:// `
	PACKAGEVERSION=`svnversion -c . | sed s/.*\:// `
	VERSION=$PUZZLESVERSION-p$PACKAGEVERSION
	echo "Installed Version: $VERSION"
	sed "s/^Version: .*\$/Version: $VERSION/" < ipkg/control > $DESTDIR/CONTROL/control
}

function clean() {
	if [ "$DESTDIR" = "" -o "$DESTDIR" = "." -o "$DESTDIR" = "build" ]; then
		if [ -d build ]; then
			echo "rm -rf build"
			rm -rf build
		fi
	fi
	make -C puzzles clean
	if [ "$1" = "icons" ]; then
		make -C puzzles/icons clean
	fi
}

if [ ! -e ipkg/rules -o ! -d puzzles ]; then
	echo "This file should be run from the base directory (that holds the ipkg dir)."
	exit 1
fi

case $1 in
	build)
		build
		;;
	install)
		install
		;;
	clean)
		clean $2
		;;
	patch|unpatch)
		cd puzzles
		do_$1
		;;
	*)
		echo "Usage: ipkg/rules {build|install|clean[ icons]|[un]patch}"
		exit 1
		;;
esac