#!/sbin/runscript

depend() {
	need localmount root fsck modules
	before keymaps consolefont dbus
	use swap hostname
}

xorg_video_driver()
{
	local xorgFile="/etc/X11/xorg.conf"
	if [[ -f $xorgFile ]]
	then
		cat /etc/X11/xorg.conf | grep Driver | cut -d\" -f2
	fi
}

cmdline_video_driver()
{
	local cmdline=`cat /proc/cmdline`
	for x in $cmdline
	do
		case $x in
			calculate\=*)
				local value=`echo "$x" | cut -d\= -f2-`
				local videodrv=`echo "$value" | cut -d, -f5`
				if [[ -n $videodrv ]]
				then
					echo "$videodrv"
					return 0
				fi
				;;
		esac
	done
	return 1
}

video_driver()
{
	cmdline_video_driver || xorg_video_driver
}

check_install_ability()
{
	local pkg=$1
	FETCHCOMMAND=false DISTDIR=/usr/portage/distfiles emerge -fq $pkg &>/dev/null
}

is_already_install()
{
	local pkg=$1
	local category=`echo $pkg | cut -d\/ -f1`
	local pkg=`echo $pkg | cut -d\/ -f2`
	local categoryPath=/var/db/pkg/${category}
	[[ -e $categoryPath ]] && ls $categoryPath | grep -q "^$pkg"
}

install_pkg()
{
	local pkg=$1
	ebegin "Installing $pkg"
	FETCHCOMMAND=false DISTDIR=/usr/portage/distfiles emerge $pkg &>/dev/null
}

variable_value()
{
	local varname=$1
	cl-install -v --filter $varname | 
		awk "{ if (\$1 == \"$varname\") print \$3 }"
}

install_video_driver()
{
	ebegin "Checking video drivers"
	case `video_driver` in
		fglrx)
			local drv="x11-drivers/ati-drivers"
			;;
		nvidia)
			local nvidiamask=`variable_value os_nvidia_mask`
			[[ -n $nvidiamask ]] && \
				echo $nvidiamask >/etc/portage/package.mask/nvidia
			local drv="x11-drivers/nvidia-drivers"
			;;
		*)
			true
			;;
	esac
	if [[ -n $drv ]]
	then
		if ! is_already_install $drv
		then
			check_install_ability $drv && install_pkg $drv
		fi
		eend $?
	else
		eend 0
	fi
}

start() {
	install_video_driver
	LANG=C /usr/bin/cl-install --live

	/usr/sbin/env-update
	source /etc/profile
	/sbin/update-modules

	/sbin/rc-update --update
	return 0
}

stop() {
	local roottype=`variable_value os_root_type`
	if [[ $roottype == "hdd" ]] && rc-config list boot | grep -q calculate
	then
		rc-update del calculate boot
	fi
}