#!/bin/sh

INSTALL_DRIVE=/dev/sda
PARTITION_BOOT=1
PARTITION_SWAP=2
PARTITION_ROOT=3
LABEL_BOOT=BOOT
LABEL_SWAP=SWAP
LABEL_ROOT=ROOT
MOUNT_PATH=/mnt

echo "Installing minimalistic base system.."

sgdisk -Z ${INSTALL_DRIVE}
sgdisk -a 2048 -o ${INSTALL_DRIVE}

sgdisk -n ${PARTITION_BOOT}:0:+100M ${INSTALL_DRIVE}
sgdisk -t ${PARTITION_BOOT}:ef02 ${INSTALL_DRIVE}
sgdisk -c ${PARTITION_BOOT}:"${LABEL_BOOT}" ${INSTALL_DRIVE}

sgdisk -n ${PARTITION_SWAP}:0:+900M ${INSTALL_DRIVE}
sgdisk -t ${PARTITION_SWAP}:8200 ${INSTALL_DRIVE}
sgdisk -c ${PARTITION_SWAP}:"${LABEL_SWAP}" ${INSTALL_DRIVE}

sgdisk -n ${PARTITION_ROOT}:0:0 ${INSTALL_DRIVE}
sgdisk -t ${PARTITION_ROOT}:8300 ${INSTALL_DRIVE}
sgdisk -c ${PARTITION_ROOT}:"${LABEL_ROOT}" ${INSTALL_DRIVE}

sgdisk -G ${INSTALL_DRIVE}

mkswap ${INSTALL_DRIVE}${PARTITION_SWAP}
swapon ${INSTALL_DRIVE}${PARTITION_SWAP}
mkfs.ext4 ${INSTALL_DRIVE}${PARTITION_ROOT}

mkdir -p ${MOUNT_PATH}
mount ${INSTALL_DRIVE}${PARTITION_ROOT} ${MOUNT_PATH}

export http_proxy=http://192.168.1.12:3128

pacstrap ${MOUNT_PATH} base

arch-chroot /mnt pacman --noconfirm -S grub-bios
arch-chroot /mnt grub-install --target=i386-pc --recheck ${INSTALL_DRIVE}
cp /mnt/usr/share/locale/en@quot/LC_MESSAGES/grub.mo /mnt/boot/grub/locale/en.mo
sed -i 's/GRUB_CMDLINE_LINUX_DEFAULT="quiet"/GRUB_CMDLINE_LINUX_DEFAULT="modprobe.blacklist=cirrus"/g' /mnt/etc/default/grub
sed -i 's/GRUB_GFXMODE=auto/GRUB_GFXMODE=text/g' /mnt/etc/default/grub
sed -i 's/#GRUB_TERMINAL_OUTPUT=console/GRUB_TERMINAL_OUTPUT=console/g' /mnt/etc/default/grub

arch-chroot /mnt grub-mkconfig -o /boot/grub/grub.cfg

genfstab -p /mnt >> /mnt/etc/fstab

sed -i 's/^#en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/g' /mnt/etc/locale.gen
arch-chroot /mnt locale-gen
echo LANG=en_US.UTF-8 > /mnt/etc/locale.conf

ln -s /usr/share/zoneinfo/Europe/Zurich /mnt/etc/localtime
arch-chroot /mnt hwclock --systohc --utc

echo "archiso" > /mnt/etc/hostname

arch-chroot /mnt systemctl enable dhcpcd@ens3.service

arch-chroot /mnt sh -c "echo 'root:xx' | chpasswd"

# switch off signature for now
arch-chroot /mnt sed -i 's/^SigLevel.*/SigLevel = Never/g' /etc/pacman.conf

# monitord needs netstat
arch-chroot /mnt pacman --noconfirm -S net-tools

# we use 'git' to manage our promises
arch-chroot /mnt pacman --noconfirm -S git-core

arch-chroot /mnt pacman --noconfirm -U http://10.0.2.2:8080/qdbm-1.8.78-1-x86_64.pkg.tar.xz
arch-chroot /mnt pacman --noconfirm -U http://10.0.2.2:8080/cfengine-3.4.2-3-x86_64.pkg.tar.xz

# install rules for the machine from git

# enable cfengine
arch-chroot /mnt systemctl enable cf-execd
arch-chroot /mnt systemctl enable cf-monitord
arch-chroot /mnt systemctl enable cf-serverd

echo "Done."

systemctl poweroff