#!/bin/bash
set -e


apt-get -y install mdadm btrfs-tools

# returns /dev/md0 as root device
# returns /dev/md1 as boot device
"./hardware/${1}/parted.sh" "$2"

# encrypt and unlock root device
echo 'Enter luks password: '
read -s md0pwd
echo -n $md0pwd | cryptsetup -q luksFormat /dev/md0
echo -n $md0pwd | cryptsetup open --type luks /dev/md0 md0-unlocked
unset md0pwd


# format

chroot=/mnt/md0-unlocked

# root device
mkfs.btrfs -f /dev/mapper/md0-unlocked
mkdir /mnt/md0-unlocked
mount /dev/mapper/md0-unlocked /mnt/md0-unlocked

# boot device
mkfs.btrfs -f /dev/md1
mkdir "$chroot/boot"
mount /dev/md1 "$chroot/boot"


# debootstrap

debootstrap --variant=minbase --arch=amd64 stretch "$chroot" https://deb.debian.org/debian/

mount -t proc none "$chroot/proc"
mount -t sysfs none "$chroot/sys"
mount -o bind /dev "$chroot/dev"


# copy fstab, crypttab, ...
cd config
cp -a * "$chroot"
cd ..

# copy parted.sh, grub.sh, ...
cd "hardware/${1}"
cp -a * "$chroot"
cd ../..

# copy a couple of other files
cp -a docker.key \
      post-debootstrap-installer.sh \
      authorized_keys \
      "$chroot"

# set hostname
echo "$2" > "$chroot/etc/hostname"

chroot "$chroot" /post-debootstrap-installer.sh

rm -r "$chroot/docker.key" \
      "$chroot/post-debootstrap-installer.sh" \
      "$chroot/authorized_keys"