#!/bin/bash

while getopts "p:n:d:" opt;
do case $opt in
       p) PASSWD=${OPTARG} ;;
       n) NAME=${OPTARG} ;;
       d) DEV=${OPTARG} ;;
       \?) echo "-$OPTARG is not valid" >&2 && exit ;;
   esac
done

# stop on error
set -e


PASSWD=${PASSWD:="toor"}
NAME=${NAME:="archibald"}
DEV=${DEV:="nvme0n1"}


echo "+---------------------+"
echo "| Archlinux Bootstrap |"
echo "+---------------------+"
echo "ROOTPASSWD      = $PASSWD"
echo "HOSTNAME     = $NAME"
echo -e "DEVICE       = $DEV\n"
sleep 2

timedatectl set-ntp true

gdisk <<EOF
o
y
n


+1G
ef00
n


+16G
8200
n



8304
w
y

EOF

mkfs.fat -F 32 -n P_EFI /dev/${DEV}p1
mkfs.ext4 -L P_ROOT /dev/${DEV}p3
mkswap -L P_SWAP /dev/${DEV}p2


mount -L P_ROOT /mnt        # root
mkdir -p /mnt/boot
mount -L P_EFI /mnt/boot   # EFI
swapon -L P_SWAP # swap

sed -e '/## Germany/,+1!d' /etc/pacman.d/mirrorlist

# for server dhcpcd and other programs are not required -> see good2know
pacstrap /mnt base base-devel linux linux-firmware vi dhcpcd wpa_supplicant dialog git netctl
genfstab -p /mnt > /mnt/etc/fstab

cat <<EOF > /mnt/root/bootstrap2.sh
#!/bin/bash

ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime
hwclock --systohc -utc

echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
locale-gen

echo "LANG=en_US.UTF-8" > /etc/locale.conf
echo $NAME > /etc/hostname

mkinitcpio -p linux

pacman -Sy --noconfirm efibootmgr dosfstools gptfdisk

bootctl install

cat <<EEE > /boot/loader/entries/arch-uefi.conf
title	Arch
linux	/vmlinuz-linux
initrd	/initramfs-linux.img
options	root=LABEL=P_ROOT rw resume=LABEL=P_SWAP
EEE

cat <<EEE > /boot/loader/entries/arch-uefi-fallback.conf
title    Arch Linux Fallback
linux    /vmlinuz-linux
initrd   /initramfs-linux-fallback.img
options	root=LABEL=P_ROOT rw resume=LABEL=P_SWAP
EEE


cat <<EEE > /boot/loader/loader.conf
default   arch-uefi
timeout   1
EEE

pacman --noconfirm -Sy reflector
reflector --country 'Germany' --sort rate --protocol https --save /etc/pacman.d/mirrorlist

printf "${PASSWD}\n${PASSWD}\n" | passwd root

exit
EOF

chmod u+x /mnt/root/bootstrap2.sh

arch-chroot /mnt /root/bootstrap2.sh
rm /mnt/root/bootstrap2.sh && rm ./bootstrap.sh

# reboot