#!/bin/bash

set -e

newuser="flo"
disk=/dev/vda

die() {
	echo "$@"
	exit 1
}

grep -qE '^flags\s+: .* hypervisor( |$)' /proc/cpuinfo || die "Not running in hypervisor. aborting automatic setup"

dhcpcd eth0

parted -s -- $disk mklabel msdos mkpart primary 1 -0

mkfs.ext4 ${disk}1
mount ${disk}1 /mnt
cat <<EOF >/etc/pacman.d/mirrorlist
Server = http://mirror.server-speed.net/\$repo/os/\$arch
EOF

pacstrap /mnt base syslinux sudo openssh haveged htop git zsh screen dnsutils vim
genfstab -p /mnt >> /mnt/etc/fstab
echo "archvm" > /mnt/etc/hostname
ln -s /usr/share/zoneinfo/Europe/Athens /mnt/etc/localtime
echo "en_US.UTF-8 UTF-8" > /mnt/etc/locale.gen
arch-chroot /mnt locale-gen

echo "LANG=en_US.UTF-8" > /mnt/etc/locale.conf
cat <<EOF > /mnt/etc/vconsole.conf
KEYMAP=de
FONT=
EOF

cat <<EOF >/mnt/boot/syslinux/syslinux.cfg
serial 0 115200
DEFAULT arch
PROMPT 0
TIMEOUT 50

LABEL arch
	MENU LABEL Arch Linux
	LINUX ../vmlinuz-linux
	APPEND root=${disk}1 ro logo.nologo elevator=deadline console=tty0 console=ttyS0 nomodeset
	INITRD ../initramfs-linux.img
EOF

cat <<EOF > /mnt/etc/modprobe.d/modprobe.conf
blacklist cirrus
EOF

arch-chroot /mnt mkinitcpio -p linux
arch-chroot /mnt syslinux-install_update -aim
arch-chroot /mnt useradd -m -g users -G wheel $newuser
mkdir /mnt/root/.ssh
touch /mnt/root/.ssh/authorized_keys
chmod 700 /mnt/root/.ssh
chmod 600 /mnt/root/.ssh/authorized_keys
cat <<EOF > /mnt/root/.ssh/authorized_keys
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAte43fgKVPKvmwhMQcQRYNm27i2cadOIJvpOFA3jPWHFN2YeqxHvgVbAESLOAO/sJ0MqXlQnBc9rr8PbQd67YP7teOBnXLOfX2mofxGEDtP2mtwneAxkMNJcYtxWjPeKL7LF5tknqPb6dXavm4+gJt27CQFFY6DJ+cD0tUUgh17HG6VGiTXF6AgB9aho/ToaMQZ4vCzztvf94kQK2uBYUXsvx4L62ZrEJbIzfB7fynBbl9+deBqsYmWRCbzaYV77YjwLhk9hI/GsUjLkTAB77WbeWJdk7fgJ/PgI69FRMhRlYASRVBqeek6NLcyQ9x54CrUkOFBC5Q+j4yjsDQN7NBw== flo@Marin
EOF

mkdir /mnt/home/$newuser/.ssh
chmod 700 /mnt/home/$newuser/.ssh
cp /mnt/root/.ssh/authorized_keys /mnt/home/$newuser/.ssh/authorized_keys
chmod 600 /mnt/home/$newuser/.ssh/authorized_keys
arch-chroot /mnt chown -R $newuser:users /home/$newuser/.ssh
arch-chroot /mnt passwd -d $newuser

curl https://git.server-speed.net/users/flo/bin/plain/init_new_user.sh | arch-chroot /mnt sudo -u $newuser bash
arch-chroot /mnt chsh -s /bin/zsh $newuser

arch-chroot /mnt systemctl enable sshd multi-user.target haveged dhcpcd.service

sync
systemctl reboot