#!/bin/sh

# FIXME: Rewrite all config_MANDATED options as functions

# Resolve bootloaders and install targets
syslinuxdev_host=''
isolinuxdev_host=''
grubdev_host=''
lilodev_host=''
partno=0
for bootloader in $bootloaders; do
	let partno=$partno+1
	if [ $partno -gt 4 ]; then
		echo 'ERROR: No more than 4 bootloaders supported!' >&2
		exit 1
	fi
	case $bootloader in
	    SYSLINUX)
		[ -n "$syslinuxdev_host" ] && continue
		syslinuxdev_host="$usbdev_host$partno"
		thisfs=''
		for fs in $selectable_filesystems; do
			case $fs in
			    vfat|msdos)
				thisfs=$fs
				continue 2
				;;
			esac
		done
		if [ -z "$thisfs" ]; then
			echo "ERROR: None of the selectable filesystems suitable for $bootloader"'!' >&2
			exit 1
		fi
		eval fs$partno=$thisfs
		;;
	    GRUB)
		[ -n "$grubdev_host" ] && continue
		grubdev_host="$usbdev_host$partno"
		let partno_grub=$partno-1 || partno_grub=0
		grubdev_grub="$usbdev_grub,$partno_grub"
		thisfs=''
		for fs in $selectable_filesystems; do
			case $fs in
			    ext2|ext3|e2fs|e3fs|ext2fs|ext3fs)
				thisfs=e2fs
				continue 2
				;;
			    fat|vfat|dos)
				thisfs=fat
				continue 2
				;;
			    isofs)
				# FIXME: Do we need a specific 1st stage bootloader defined here as well?
				thisfs=$fs
				continue 2
				;;
			    jfs|reiserfs|xfs|minix)
				thisfs=$fs
				continue 2
				;;
			esac
		done
		if [ -z "$thisfs" ]; then
			echo "ERROR: None of the selectable filesystems suitable for $bootloader"'!' >&2
			exit 1
		fi
		eval fs$partno=$thisfs
		;;
	    LILO|ISOLINUX)
		echo "ERROR: bootloader \"$bootloader\" not yet implemented"'!' >&2
		exit 1
		;;
	    *)
		echo "ERROR: Unknown bootloader \"$bootloader\""'!' >&2
		exit 1
		;;
	esac
done
# TODO: Loop through all possible bootloaders instead of checking only these two
if [ -n "$grubdev_host" ] && [ -n "$syslinuxdev_host" ]; then
	MULTIPLE_BOOTLOADERS="yes"
fi
if [ "$MULTIPLE_BOOTLOADERS" = "yes" ]; then
	MBR="yes"
fi
if [ -z "$grubdev_host$syslinuxdev_host$isolinuxdev_host$lilodev_host" ]; then
	echo 'ERROR: No bootloader defined!' >&2
	exit 1
fi
if [ -n "$syslinuxdev_host" ] && [ "$ROOTFS" != "isofs" ]; then
	INCOMPATIBLE_FS="yes"
fi
bootdev_host="${usbdev_host}1"
# FIXME: Set rootdev to dev of highest priority bootloader matching ROOTFS
if [ "$MULTIPLE_BOOTLOADERS" = "yes" ] || [ "$INCOMPATIBLE_FS" = "yes" ]; then
	rootdev_host="${usbdev_host}2"
	rootdev_target="${usbdev_target}2"
else
	rootdev_host="${usbdev_host}1"
	rootdev_target="${usbdev_target}1"
fi
if [ "$FLASHYBRID" = "yes" ] && [ "$ROOTFS" = "isofs" ]; then
	echo 'ERROR: FLASHYBRID requires a writable root filesystem!' >&2
	exit 1
fi
# FIXME: Support rolling the prepared system into a read-only ISO
# filesystem instead of using flashybrid
if [ "$ROOTFS" = "isofs" ]; then
	echo 'ERROR: isofs root filesystem is not yet supported!' >&2
	exit 1
fi

debootstrap_excludes="lilo,ipchains,pcmcia-cs,ppp,pppoe,pppoeconf,pppconfig,syslinux,logrotate,mailx,at,makedev,wget"
debootstrap_excludes="$debootstrap_excludes,nvi,base-config,cron,ed,fdutils,gettext-base,groff-base,info,iptables,man-db,manpages,nano,tasksel,telnet,apt-utils"
debootstrap_excludes="$debootstrap_excludes,bsdmainutils"
#debootstrap_excludes="$debootstrap_excludes,klogd,sysklogd"
debootstrap_excludes="$debootstrap_excludes,libpcap0.7"
debootstrap_excludes="$debootstrap_excludes,libtextwrap1,libdb4.2,console-common"
debootstrap_excludes="$debootstrap_excludes,console-data,console-tools,libconsole"

# Save space by dropping MTA
debootstrap_excludes="$debootstrap_excludes,exim,exim4-base,exim4,exim4-config,exim4-daemon-light,libopencdk8,libpcre3,libtasn1-2,libgcrypt11,libgcrypt7,libgdbm3,libgnutls10,libgnutls11,libgpg-error0,liblockfile1,liblzo1"

# Save space by dropping debconf i18n support
# (also allows to avoid logrotate - nasty to configure for r/o systems!)
#debootstrap_excludes="$debootstrap_excludes,debconf-i18n,liblocale-gettext-perl,libtext-charwidth-perl,libtext-iconv-perl,libtext-wrapi18n-perl"
#debootstrap_includes="debconf-english"
## FIXME: debootstrap currently broken and cannot include debconf-english,
##        so do that as regular aptitude run within 1_makerootfs.sh.
debootstrap_excludes="$debootstrap_excludes,liblocale-gettext-perl,libtext-charwidth-perl,libtext-iconv-perl,libtext-wrapi18n-perl"
#debootstrap_excludes="$debootstrap_excludes,debconf-i18n"
#debootstrap_includes="debconf-english"

# Alternative DHCP client implementations
debootstrap_excludes="$debootstrap_excludes,dhcp-client"

case $DHCPCLIENT in
    dhcp3)
	aptitude_dhcpclient_install="dhcp3-client"
	;;
    udhcpc)
	aptitude_dhcpclient_install="udhcpc"
	;;
    *)
	echo "ERROR: Unknown dhcp client \"$DHCPCLIENT\""'!' >&2
	exit 1
	;;
esac

[ -n "$grubdev_host" ] && aptitude_install="$aptitude_install grub"
[ "$FLASHYBRID" = "yes" ] && aptitude_install="$aptitude_install flashybrid"

if [ "$diskfs" = "nfs" ] || [ "$pubfs" = "nfs" ]; then
	aptitude_install="$aptitude_install nfs-common"
fi

# Kernel modules to install into the initrd
modules_install="usb-storage sd_mod scsi_mod uhci uhci-hcd ehci-hcd usbcore"
#modules_install="$modules_install vfat nls_cp437 msdos fat"