#!/bin/bash
set -e 

# / 1990GB /dev/sda1 & /dev/sdb1 btrfs raid1
# /boot 2GB /dev/md0
# /boot/efi 1GB /dev/sda3 || /dev/sdb3
# free 7GB

chroot="$1"
boot="hardware/${2}/boot"
esp="hardware/${2}/esp"
root="hardware/${2}/root"

# encrypt and unlock the root partitions
echo -n 'Enter LUKS password: '
read -s root_pwd
echo #to indicate progress after password prompt
for root in "sda1" "sdb1"; do
    echo -n $root_pwd | cryptsetup -q luksFormat "/dev/$root"
    echo -n $root_pwd | cryptsetup open --type luks "/dev/$root" "root-unlocked-$root"
done
unset root_pwd


# root device btrfs raid1
mkfs.btrfs /dev/mapper/root-unlocked-sda1
mount /dev/mapper/root-unlocked-sda1 "$chroot"
btrfs device add /dev/mapper/root-unlocked-sdb1 "$chroot" -f
btrfs balance start -dconvert=raid1 -mconvert=raid1 "$chroot"

# boot device ext4
echo mkfs.ext4 "$boot" 
mkfs.ext4 "$boot" 
echo mkdir "$chroot/boot" 
mkdir "$chroot/boot" 
echo mount "$boot" "$chroot/boot" 
mount "$boot" "$chroot/boot" 
 
# esp device FAT
mkfs.fat "$esp" 
mkdir "$chroot/boot/efi" 
mount "$esp" "$chroot/boot/efi"