# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=4

inherit eutils

DESCRIPTION="rEFInd Extensible Firmware Interface boot manager binary install"
HOMEPAGE="http://www.rodsbooks.com/refind/index.html"
SRC_URI="mirror://sourceforge/refind/${PV}/${P}.zip"
#MERGE_TYPE="binary"

LICENSE="GPL-3"
SLOT="0"
KEYWORDS="~amd64 ~ia64 ~x86"
IUSE=""

RDEPEND=""
DEPEND="${RDEPEND}
	sys-boot/efibootmgr"

PROVIDE="virtual/bootloader"

src_install() {
	einfo "Installing rEFInd on Linux"
	# FindLinuxESP
	EspLine=`df /boot/efi | grep boot`
	InstallPart=`echo $EspLine | cut -d " " -f 6`
	EspFilesystem=`grep $InstallPart /etc/mtab | cut -d " " -f 3`
	if [[ $EspFilesystem != 'vfat' ]] ; then
		eerror "/boot/efi doesn't seem to be on a VFAT filesystem. The ESP must be mounted"
		eerror "at /boot or /boot/efi and it must be VFAT! Aborting!"
		die "Unable to mount a VFAT file system at /boot or /boot/efi."
	fi
	einfo "ESP was found at $InstallPart using $EspFilesystem"

	# InstallOnLinux
	CpuType=`uname -m`
	if [[ $CpuType == 'x86_64' ]] ; then
		Platform="EFI64"
	elif [[ $CpuType == 'i386' || $CpuType == 'i486' || $CpuType == 'i586' || $CpuType == 'i686' ]] ; then
		Platform="EFI32"
		ewarn "CAUTION: This Linux installation uses a 32-bit kernel. 32-bit EFI-based"
		ewarn "computers are VERY RARE. If you've installed a 32-bit version of Linux"
		ewarn "on a 64-bit computer, you should manually install the 64-bit version of"
		ewarn "rEFInd. If you're installing on a Mac, you should do so from OS X."
		ewarn "Installation will now proceed presuming a 32-bit EFI."
	else
		die "Unknown CPU type '$CpuType'; aborting!"
	fi

	# CopyRefindFiles
	RefindDir="${S}/refind"
	TargetDir="/EFI/refind"
	exeinto ${InstallPart}/${TargetDir}
	if [[ $Platform == 'EFI32' ]] ; then
		doexe $RefindDir/refind_ia32.efi
		Refind="refind_ia32.efi"
	elif [[ $Platform == 'EFI64' ]] ; then
		doexe $RefindDir/refind_x64.efi
		Refind="refind_x64.efi"
	else
		die "Unknown platform! Aborting!"
	fi
	einfo "Copied rEFInd binary file $Refind"

	doins -r icons/
	einfo "Copied rEFInd icons directory"

	doins $RefindDir/refind.conf-sample
	einfo "Copied sample rEFInd configuration file"
}

pkg_config() {
	InstallIt="0"
	Efibootmgr=`which efibootmgr 2> /dev/null`
	if [[ $Efibootmgr ]] ; then
		modprobe efivars &> /dev/null
		InstallDisk=`grep $InstallPart /etc/mtab | cut -d " " -f 1 | cut -c 1-8`
		PartNum=`grep $InstallPart /etc/mtab | cut -d " " -f 1 | cut -c 9-10`
		EntryFilename=$TargetDir/$Refind
		EfiEntryFilename=`echo ${EntryFilename//\//\\\}`
		EfiEntryFilename2=`echo ${EfiEntryFilename} | sed s/\\\\\\\\/\\\\\\\\\\\\\\\\/g`
		ExistingEntry=`$Efibootmgr -v | grep $EfiEntryFilename2`
		if [[ $ExistingEntry ]] ; then
			ExistingEntryBootNum=`echo $ExistingEntry | cut -c 5-8`
			FirstBoot=`$Efibootmgr | grep BootOrder | cut -c 12-15`
			if [[ $ExistingEntryBootNum != $FirstBoot ]] ; then
				einfo "An existing rEFInd boot entry exists, but isn't set as the default boot"
				einfo "manager. The boot order is being adjusted to make rEFInd the default boot"
				einfo "manager. If this is NOT what you want, you should use efibootmgr to"
				einfo "manually adjust your EFI's boot order."
				$Efibootmgr -b $ExistingEntryBootNum -B &> /dev/null
				InstallIt="1"
			fi
		else
			InstallIt="1"
		fi
		if [[ $InstallIt == "1" ]] ; then
			einfo "Installing rEFInd as default boot manager"
			$Efibootmgr -c -l $EfiEntryFilename -L rEFInd -d $InstallDisk -p $PartNum &> /dev/null
		fi
	else
		ewarn "ALERT: There were problems running the efibootmgr program! You may need to"
		ewarn "rename the $Refind binary to the default name (EFI/boot/bootx64.efi"
		ewarn "on x86-64 systems or EFI/boot/bootia32.efi on x86 systems) to have it run!"
	fi
}