#!/bin/bash

# Get variable from filesystem.
part=$(</tmp/disk)2

# Encrypting partition.
echo "Encrypting system partition."
echo -e

cryptsetup -c aes-xts-plain -y -s 512 luksFormat /dev/$part &&
echo "Partition successfully encrypted."
echo -e

# Opening encrypted partition and mounting at /dev/mapper/lvm.
echo "Opening and mounting encrypted partition."
echo -e

cryptsetup luksOpen /dev/$part lvm &&
echo "Partition opened and mounted:"
echo -e

disk="${part%?}"
lsblk | grep "$disk"
echo -e

# Creating physical volume.
echo "Creating physical volume."
pvcreate /dev/mapper/lvm &&
echo -e

# Creating volume group "main".
echo "Creating volume group."
vgcreate main /dev/mapper/lvm &&
echo -e

# Creating logical volumes.
echo "Creating logical volumes for root and home."
echo -e

# Lol, this part:
part=$(</tmp/disk)2 && i=( $(lsblk | grep "$part" | tail -n+1 | awk '{print $4}') ) && size="${i%?}"

echo "Your system partition has a size of $size GB."
echo "What size should your root partition have?"
read root
echo "Creating a $root GB root volume."
echo -e

lvcreate -L ${root}G -n root main &&
lvcreate -l 100%FREE -n home main &&
echo -e
 
echo "Logical volumes successfully created."
echo -e
 
echo "Creating the filesystem."
echo -e
 
boot=$(</tmp/disk)1

mkfs.fat -F 32 -n UEFI /dev/$boot &&
echo "Filesystem for boot successfully created."
echo -e
 
mkfs.ext4 -L root /dev/mapper/main-root &&
echo "Filesystem for root successfully created."
echo -e 
 
mkfs.ext4 -L home /dev/mapper/main-home &&
echo "Filesystem for home successfully created."
echo -e

echo "Mounting.."
echo -e

mount /dev/mapper/main-root /mnt
mkdir /mnt/boot
mkdir /mnt/home
mount /dev/$boot /mnt/boot
mount /dev/mapper/main-home /mnt/home

echo "Mounting complete."
echo -e

lsblk
echo -e