#!/bin/bash

function first_stage(){
	set -e
	echo foo first_stage

	echo -n "hostname: "
	read hostname_in
	export NEW_HOSTNAME=$hostname_in

	echo -n "luks password: "
	read -s luks_password_in
	export LUKS_PASSWORD=$luks_password_in
	echo

	echo -n "root password: "
	read -s root_password_in
	export ROOT_PASSWORD=$root_password_in
	echo

	echo -n "user password: "
	read -s user_password_in
	export USER_PASSWORD=$user_password_in
	echo

	lsblk -ftpo NAME,FSTYPE,LABEL,UUID,FSAVAIL,MOUNTPOINT
	select DEVICE in $(lsblk -frpno NAME); do
	echo using $DEVICE
	break
	done

	export DEVICE

	apt install -y debootstrap cryptsetup btrfs-progs lvm2 rsync

	if [ -d /dev/cryptvg ]; then
		mount | grep target | awk '{print $3}'| sort -r | while read LINE; do
			umount -l $LINE;
		done
		if [ -b /dev/cryptvg/swap ]; then
			swapoff /dev/cryptvg/swap || true
		fi
		vgchange -an /dev/cryptvg
	fi

	if [ -b /dev/mapper/cryptlvm ]; then
		cryptsetup luksClose cryptlvm
	fi

	wipefs -a ${DEVICE}

	(
	echo o
	echo n
	echo p
	echo 1
	echo
	echo +2G
	echo n
	echo p
	echo 2
	echo
	echo 
	echo w
	) | fdisk ${DEVICE}
	
	
	wipefs -a ${DEVICE}1
	wipefs -a ${DEVICE}2

	echo mkfs.ext4 ${DEVICE}1
	yes | mkfs.ext4 ${DEVICE}1

	(
	echo $LUKS_PASSWORD
	echo $LUKS_PASSWORD	
	)| cryptsetup luksFormat ${DEVICE}2
	echo $LUKS_PASSWORD | cryptsetup luksOpen ${DEVICE}2 cryptlvm
	unset LUKS_PASSWORD
	pvcreate /dev/mapper/cryptlvm
	vgcreate cryptvg /dev/mapper/cryptlvm

	export LVM_SIZE=$(dev_size /dev/mapper/cryptlvm)

	export SWAP_SIZE=$(($(mem_size)/1024/1024))
	export ROOT_SIZE=$(($LVM_SIZE/1024/1024-$SWAP_SIZE-512))

	echo lvcreate /dev/cryptvg --name=root --size=${ROOT_SIZE}M
	lvcreate /dev/cryptvg --name=root --size=${ROOT_SIZE}M
	yes | mkfs.btrfs /dev/cryptvg/root

	echo lvcreate /dev/cryptvg --name=swap --size=${SWAP_SIZE}M
	lvcreate /dev/cryptvg --name=swap --size=${SWAP_SIZE}M
	mkswap /dev/cryptvg/swap
	swapon /dev/cryptvg/swap

	mkdir -p /tmp/mnt
	mount /dev/cryptvg/root /tmp/mnt
	btrfs subvolume create  /tmp/mnt/@
	btrfs subvolume create  /tmp/mnt/@home
	umount /tmp/mnt

	echo mount -osubvol=@ /dev/cryptvg/root $TARGET
	mount -osubvol=@ /dev/cryptvg/root $TARGET

	echo debootstrap sid $TARGET
	debootstrap sid $TARGET

	mount ${DEVICE}1 $TARGET/boot
	echo mount ${DEVICE}1 $TARGET/boot

	echo mount -osubvol=@home /dev/cryptvg/root $TARGET/home
	mount -osubvol=@home /dev/cryptvg/root $TARGET/home

	genfstab -U $TARGET | tee $TARGET/etc/fstab
	UUID=$(lsblk -lpo NAME,UUID | grep ${DEVICE}2 | awk '{print $2}')
	echo cryptlvm UUID=${UUID} none luks,initramfs > $TARGET/etc/crypttab
}

function second_stage(){
	set -e
	export DEBIAN_FRONTEND=noninteractive
	(
	echo $ROOT_PASSWORD
	echo $ROOT_PASSWORD
	) | passwd
	unset ROOT_PASSWORD
	echo -n > /etc/motd
	echo $NEW_HOSTNAME > /etc/hostname
	hostname $NEW_HOSTNAME
	sed -i 's/main/main contrib non-free/g' /etc/apt/sources.list
	apt update
	apt install -y linux-image-amd64 grub2 cryptsetup cryptsetup-initramfs cryptsetup-suspend btrfs-progs lvm2 firmware-iwlwifi locales tzdata keyboard-configuration console-common zsh intel-microcode
	grub-install ${DEVICE}
	update-grub
	update-initramfs -k all -u
	mkdir /snap
	btrfs subvolume snapshot / /snap/$(date +%Y-%m-%d_basesystem)
	apt install -y task-mate-desktop mate-desktop-environment-extra
	(
	echo $USER_PASSWORD
	echo $USER_PASSWORD
	echo
	echo
	echo
	echo
	echo
	) | adduser jedi
	unset USER_PASSWORD

	btrfs subvolume snapshot / /snap/$(date +%Y-%m-%d_user_gui)
	apt install -y git wget materia-gtk-theme htop nmap arandr timeshift gparted
	echo $?
	apt install -y virt-manager telegram-desktop chromium firefox thunderbird geany vlc pidgin gimp inkscape meld kicad blender freecad remmina gmpc
	echo $?
	btrfs subvolume snapshot / /snap/$(date +%Y-%m-%d_big_tools)
	git clone https://github.com/robbyrussell/oh-my-zsh.git $HOME/.oh-my-zsh
	chmod 0755 $HOME/.oh-my-zsh
	chown -R jedi:jedi $HOME
	chsh --shell /usr/bin/zsh jedi
	
	export -f user_install
	su jedi -c "bash -c user_install"

	echo second_stage done
}

function user_install(){
	set -e
	
	dbus-launch dconf write /org/mate/desktop/interface/gtk-theme "'Materia-dark'"
	echo $?
	dbus-launch dconf write /org/mate/marco/general/theme "'Materia-dark'"
	echo $?
	dbus-launch dconf write /org/mate/desktop/interface/icon-theme "'Adwaita'"
	echo $?
	dbus-launch dconf write /org/mate/desktop/peripherals/mouse/cursor-theme "'Adwaita'"
	echo $?
	
	rsync -a /root/unbox_data/secrets/SSH/ .ssh/
	
	git clone ssh://git@git.neulandlabor.de:2222/j3d1/laptop_tools.git Tools
	echo $?
	
	#wget --show-progress -qO ./toolbox.tar.gz https://download.jetbrains.com/toolbox/jetbrains-toolbox-1.20.7940.tar.gz
	
	#TOOLBOX_TEMP_DIR=$(mktemp -d)

	#tar -C "$TOOLBOX_TEMP_DIR" -xf toolbox.tar.gz
	#rm ./toolbox.tar.gz

	#"$TOOLBOX_TEMP_DIR"/*/jetbrains-toolbox
	
	#rm -r "$TOOLBOX_TEMP_DIR"
	echo
}


function post_install_stage(){
	sleep 0.5
	mount | grep target | awk '{print $3}'| sort -r | while read LINE; do
		umount -l $LINE;
	done
}