#!/bin/bash

source /etc/init.d/functions.sh

TYPE="check"

usage() {
	CMD=$(basename build-compiz-fusion)
        echo "${CMD} - tool to install compiz-fusion from xeffects overlay"
        echo ""
	echo "usage: ${CMD} <options>"
	echo ""
	echo "options are:"
	echo "   -u --upgrade"  upgrade existing compiz-fusion
	echo "   -i --install"  install compiz fusion
	echo "   -s --stage n   stage number to start when upgrade"
        echo "                  1 = core, 2 = core plugins,"
	echo "                  3 = metapackage, 4 = extra plugins"
	echo "   -1 --one       upgrade single stage only"
        echo ""
}

if [ -z "${1}" ]; then
	usage
	exit 1
fi

while [ -n "${1}" ]; do
	case "${1}" in
		-u|--upgrade)
			TYPE="upgrade"
		;;
		-i|--install)
			TYPE="install"
		;;
		-s|--stage)
			shift
			STAGE="${1}"
		;;
		-1|--one)
			ONESTAGE=1
		;;
		-h|--help)
			usage
			exit 0
		;;
		*)
			usage
			exit 1
		;;
	esac
	shift
done

if [ "${TYPE}" == "upgrade" ]; then

	if [ -z "${STAGE}" ]; then
		STAGE=1
	fi

	# STAGE 1 CORE
	if [ "${STAGE}" -lt 2 ]; then
		einfo "Stage 1: Building compiz-fusion core and dependencies"


		if eselect opengl show | grep -q 'nvidia'; then
			OPENGL_SET="nvidia"
			eselect opengl set xorg-x11
		fi
		if eselect opengl show | grep -q 'ati'; then
			OPENGL_SET="ati"
			eselect opengl set xorg-x11
		fi
	
		CONFIG_BACKEND=""
		if emerge -pvo compiz-fusion | grep compiz-fusion | grep -q 'gnome'; then
			CONFIG_BACKEND="${CONFIG_BACKEND} compizconfig-backend-gconf"
		elif emerge -pvo compiz-fusion | grep compiz-fusion | grep -q 'kde'; then
			CONFIG_BACKEND="${CONFIG_BACKEND} compizconfig-backend-kconfig"
		fi

		emerge -av1 \
			compiz \
			compiz-bcop \
			emerald \
			libcompizconfig \
			${CONFIG_BACKEND} \
			compizconfig-python \
			ccsm \
			|| exit 1

		if [ -n "${OPENGL_SET}" ]; then
			eselect opengl set ${OPENGL_SET}
		fi

	fi

	[ "${ONESTAGE}" = "1" ] && exit 0

	# STAGE 2 PLUGINS
	if [ "${STAGE}" -lt 3 ]; then
		einfo "Stage 2: Building core plugins and themes"

		emerge -av1 \
			emerald-themes \
			compiz-fusion-plugins-main \
			compiz-fusion-plugins-extra \
		|| exit 1

	fi

	[ "${ONESTAGE}" = "1" ] && exit 0
	
	# STAGE 3 META
	if [ "${STAGE}" -lt 4 ]; then
		einfo "Stage 3: Building compiz-fusion meta"

		emerge -av \
			compiz-fusion \
		|| exit 1

	fi

	[ "${ONESTAGE}" = "1" ] && exit 0
	
	# STAGE 4 EXTRA
	if [ "${STAGE}" -lt 5 ]; then
		einfo "Stage 4: Building compiz-fusion extra plugins and apps"
		emerge -av \
			fusion-icon \
			compiz-fusion-plugins-atlantis \
			compiz-fusion-plugins-threed \
			compiz-fusion-plugins-unsupported \
			compiz-fusion-plugins-wallpaper \
			|| exit 1
	fi

	exit 0

elif [ "${TYPE}" == "install" ]; then

	eval "$(emerge --info | grep 'ACCEPT_KEYWORDS')"
	eval "$(emerge --info | grep 'PORTDIR')"

	if [ -z "${ACCEPT_KEYWORDS}" ]; then
		eerror "Cannot determine \$ACCEPT_KEYWORDS"
		exit 1
	else
		einfo "ACCEPT_KEYWORDS=\"${ACCEPT_KEYWORDS}\""
	fi

	if [ -z "${PORTDIR}" ]; then
		eerror "Cannot determine \$PORTDIR"
		exit 1
	else
		einfo "PORTDIR=\"${PORTDIR}\""
	fi

	einfo "Installing layman"

	emerge -av app-portage/layman

	einfo "Add make.conf layman overlay"

	echo "source ${PORTDIR}/local/layman/make.conf" >> /etc/make.conf

	einfo "Add gentoo-xeffects overlay"

	layman -a xeffects

	einfo "Installing flagedit"

	emerge -av app-portage/flagedit

	einfo "Updating package.use and package.keywords"

	flagedit x11-base/xorg-server +dri -- ~${ACCEPT_KEYWORDS}
	flagedit x11-base/xgl -- ~${ACCEPT_KEYWORDS}
	flagedit x11-drivers/nvidia-drivers -- ~${ACCEPT_KEYWORDS}
	flagedit x11-drivers/ati-drivers -- ~${ACCEPT_KEYWORDS}
	flagedit x11-wm/metacity -- ~${ACCEPT_KEYWORDS}
	flagedit dev-cpp/libsexymm -- ~${ACCEPT_KEYWORDS}
	flagedit x11-libs/libX11 -- ~${ACCEPT_KEYWORDS}
	flagedit x11-libs/cairo +glitz +newspr +svg -- ~${ACCEPT_KEYWORDS}
	flagedit x11-libs/libXft +newspr -- ~${ACCEPT_KEYWORDS}
	flagedit media-libs/mesa +motif -- ~${ACCEPT_KEYWORDS}

	flagedit x11-wm/compiz +svg -- '**'
	flagedit x11-libs/compiz-bcop -- '**'
	flagedit x11-wm/emerald -- '**'
	flagedit x11-libs/libcompizconfig -- '**'
	flagedit x11-libs/compizconfig-backend-gconf -- '**'
	flagedit x11-libs/compizconfig-backend-kconfig -- '**'
	flagedit dev-python/compizconfig-python -- '**'
	flagedit x11-apps/ccsm -- '**'

	flagedit x11-themes/emerald-themes -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-extra -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-main -- '**'
	
	flagedit x11-wm/compiz-fusion -- '**'

	flagedit x11-apps/fusion-icon -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-atlantis -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-threed -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-unsupported -- '**'
	flagedit x11-plugins/compiz-fusion-plugins-wallpaper -- '**'

	if eselect opengl show | grep -q 'nvidia'; then
		einfo "Temporary change opengl lib to xorg-x11"
		OPENGL_SET="nvidia"
		eselect opengl set xorg-x11
	fi
	if eselect opengl show | grep -q 'ati'; then
		einfo "Temporary change opengl lib to xorg-x11"
		OPENGL_SET="ati"
		eselect opengl set xorg-x11
	fi
	
	einfo "Emerge compiz-fusion base and other packages with new USE flag"

	emerge -av --deep --newuse compiz-fusion
	
	if [ -n "${OPENGL_SET}" ]; then
		einfo "Restoring opengl setting"
		eselect opengl set ${OPENGL_SET}
	fi


	einfo "Emerge compiz-fusion extra plugins and apps"

	emerge -av fusion-icon compiz-fusion-plugins-atlantis compiz-fusion-plugins-threed compiz-fusion-plugins-unsupported compiz-fusion-plugins-wallpaper

	einfo "Setup compiz-manager executable"

	wget -O /usr/local/bin/compiz-manager 'http://gitweb.opencompositing.org/?p=users/kristian/compiz-scripts;a=blob_plain;f=manager/compiz-manager;hb=HEAD'
	chmod +x /usr/local/bin/compiz-manager

	einfo "Setup start-compiz-manager executable"
	
	echo '#!/bin/bash' > /usr/local/bin/start-compiz-manager
	echo 'LD_LIBRARY_PATH=/usr/lib/opengl/xorg-x11/lib /usr/local/bin/compiz-manager' >> /usr/local/bin/start-compiz-manager
	chmod +x /usr/local/bin/start-compiz-manager

	einfo "Install complete"
	echo ""
	ewarn "Please see http://gentoo-wiki.com/HOWTO_compiz-fusion"	
	ewarn "and http://http://wiki.gentoo-xeffects.org/Main_Page"
	ewarn "How to start compiz-fusion and setup XGL/AIGLX"
	ewarn "For information how to setup AIGLX or XGL, Please see"
	ewarn "  http://gentoo-wiki.com/HOWTO_AIGLX"
	ewarn "  http://wiki.gentoo-xeffects.org/AIGLX"
	ewarn "  http://gentoo-wiki.com/HOWTO_XGL"
	ewarn "  http://wiki.gentoo-xeffects.org/XGL"
	ewarn "Nvidia Users please also see"
	ewarn "  http://gentoo-wiki.com/HOWTO_nVidia_GL_Desktop_Effects"
	ewarn ""
	ewarn "To start compiz-fusion, run commmand 'compiz-manager'"
	ewarn "inside X but please read wiki at link above before"
	ewarn ""
	ewarn "Your may need to use 'start-compiz-manager' instead of"
	ewarn "compiz-manager, it contains some fixupds to for "
	ewarn "white/black screen bug or you may use command "
	ewarn "LD_LIBRARY_PATH=/usr/lib/opengl/xorg-x11/lib compiz-manager"
	echo ""
	einfo "Later for update use '${0} --upgrade' for update compiz-fusion"
	einfo "emerge -u compiz-fusion won't work"
fi