#!/bin/sh

preparefs() {
sfdisk /dev/sda << EOF
label: gpt
label-id: 7732076F-A005-834F-99C7-AD0CB2B25A03
device: /dev/sda
unit: sectors
first-lba: 2048
last-lba: 14680030

/dev/sda1 : start=        2048, size=        2048, type=21686148-6449-6E6F-744E-656564454649, uuid=3C0D6767-FD5A-0F41-BD87-94E6523CCC16
/dev/sda2 : start=        4096, size=     1572864, type=0657FD6D-A4AB-43C4-84E5-0933C84B4F4F, uuid=D75578A9-B48A-B245-B5B7-61739331F971
/dev/sda3 : start=     1576960, size=    13103071, type=0FC63DAF-8483-4772-8E79-3D69D8477DE4, uuid=83686505-2CB2-BD4E-B91C-920B33D586EB
EOF

mkswap /dev/sda2
yes | mkfs.ext4 /dev/sda3
mount /dev/sda3 /mnt/
}

installbase() {
REPO=https://alpha.de.repo.voidlinux.org/current
ARCH=x86_64
mkdir -p /mnt/var/db/xbps/keys
cp /var/db/xbps/keys/* /mnt/var/db/xbps/keys/
yes | XBPS_ARCH=$ARCH xbps-install -S -r /mnt -R "$REPO" base-system
}

configure() {
mount --rbind /sys /mnt/sys && mount --make-rslave /mnt/sys
mount --rbind /dev /mnt/dev && mount --make-rslave /mnt/dev
mount --rbind /proc /mnt/proc && mount --make-rslave /mnt/proc
cp /etc/resolv.conf /mnt/etc/
cat << EOF | chroot /mnt 
echo sengcan > /etc/hostname
sed -i "/#en_US.UTF-8 UTF-8/s/^#//" /etc/default/libc-locales
xbps-reconfigure -f glibc-locales
useradd -c "Adrian Emil Grigore" -m -G users,wheel adi
sed -i "/# %wheel ALL=(ALL) ALL/s/^# //" /etc/sudoers
cat << FSTAB > /etc/fstab
tmpfs	/tmp	tmpfs	defaults,nosuid,nodev	0	0
UUID=$(blkid -s UUID -o value /dev/sda2) swap	swap	rw,noatime,discard	0	0
UUID=$(blkid -s UUID -o value /dev/sda3) /	ext	rw,relatime	0	0
FSTAB
EOF
chroot /mnt passwd adi
sleep 5
}

installgrub() {
cat << EOF | chroot /mnt 
yes | xbps-install grub
grub-install /dev/sda
EOF
}

finalize() {
chroot /mnt xbps-reconfigure -fa
umount -R /mnt/
}

preparefs
installbase
configure
installgrub
finalize