#!/bin/bash
# we depend on a properly build rootfs
if [ "$EUID" -ne 0 ]
then echo "Please run as root"
    exit
fi

if [ $# -ne 1 ]
then
echo "you need to point to a disk (there is no security agains pointing to a parition)"
echo "nvme won't work"
exit 1
fi

disk=$1

CHIBRAX_MOUNT_POINT="/tmp/chibraxMountPoint"

#creating a msdos image for mbr boot
parted $disk mklabel msdos || exit 1
parted $disk mkpart primary ext4 0% 100% || exit 1



mkdir $CHIBRAX_MOUNT_POINT -p || exit 1

mkfs.ext4 ${disk}1 #|| exit 1
mount ${disk}1 $CHIBRAX_MOUNT_POINT

echo "rebuilding C++ hooks"
./clibs.sh || exit 1
echo "done"

echo "coping rootfs"
cp rootfs/* $CHIBRAX_MOUNT_POINT -r  || exit 1
echo "done"

echo "installing grub"
mount --rbind /dev $CHIBRAX_MOUNT_POINT/dev || exit 1
mount --make-rslave $CHIBRAX_MOUNT_POINT/dev || exit 1
mount -t proc /proc $CHIBRAX_MOUNT_POINT/proc || exit 1
mount --rbind /sys $CHIBRAX_MOUNT_POINT/sys || exit 1
mount --make-rslave $CHIBRAX_MOUNT_POINT/sys || exit 1
mount --rbind /tmp $CHIBRAX_MOUNT_POINT/tmp || exit 1

chroot $CHIBRAX_MOUNT_POINT /sbin/ldconfig -p || exit 1
chroot $CHIBRAX_MOUNT_POINT /usr/sbin/grub-install --target=i386-pc $disk --modules=part_msdos || exit 1
chroot $CHIBRAX_MOUNT_POINT /usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg


PARTUUID=$(lsblk $LOOP --fs | awk '{print $4}' | grep -v LABEL)

echo "menuentry 'Chibrax OS' {"                                        >> $CHIBRAX_MOUNT_POINT/boot/grub/grub.cfg
echo "    set root='hd0,msdos1'"                                       >> $CHIBRAX_MOUNT_POINT/boot/grub/grub.cfg
echo "    linux /boot/vmlinuz rootfstype=ext4 root=/dev/sda1 rw quiet" >> $CHIBRAX_MOUNT_POINT/boot/grub/grub.cfg
echo "}"                                                               >> $CHIBRAX_MOUNT_POINT/boot/grub/grub.cfg

umount $CHIBRAX_MOUNT_POINT/dev -l
umount $CHIBRAX_MOUNT_POINT/proc -l
umount $CHIBRAX_MOUNT_POINT/sys -l
umount $CHIBRAX_MOUNT_POINT/tmp -l
umount $CHIBRAX_MOUNT_POINT