#!/bin/bash
########################
# What this script is:
#
# An automatic installer for Debian Stable with BTRFS, Snapshots, and Full-disk-encryption
#
# INSTRUCTIONS
#
# For new disk installs, initialize the disk to setup Encryption and partitions from the main menu.
#
# Before running the install, ensure that you have Internet access.
#
# Please be sure to change USER,USER_PASSWORD,DISK_PASSWORD, and ROOT_PASSWORD strings in this file
#
# To install a new OS to a disk, run debian.sh and choose option 1 from the main menu
#
########################
#Configure this section
########################
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
export DEBIAN_FRONTEND=noninteractive
TARGET='/install'
mkdir $TARGET
######################################
echo
HARD_DISK=$2
######################################
USER="user"
USER_PASSWORD="123456"
ROOT_PASSWORD="123456"
WIRELESS_PASSWORD='123456'
SSID='wifi'
WIRELESS_INTERFACE='wlan0'
DISK_PASSWORD='123456'
COMPRESSION='compress=zlib:5'
AUTO_DECRYPT='True'
FLATPAKS+=(org.kde.kapman net.sourceforge.ExtremeTuxRacer com.github.bjaraujo.Bombermaaan org.supertuxproject.SuperTux net.supertuxkart.SuperTuxKart net.sourceforge.chromium-bsu io.jor.mightymike com.eduke32.EDuke32 com.zandronum.Zandronum net.openra.OpenRA)

#Packages
PACKAGES=" resolvconf wireguard wireguard-tools nmap libsecret-tools libglu1-mesa preload flatpak powertop acpi cockpit cockpit-podman packagekit cockpit-packagekit cockpit-storaged "
BASE_PACKAGES=" inotify-tools debootstrap cups apt-transport-https samba samba-common nfs-common nfs-kernel-server linux-cpupower locales zram-tools acpid podman ghostscript cifs-utils ntp vim-airline rsync screen base udev git network-manager efibootmgr linux-headers-amd64 cryptsetup network-manager-openvpn ntp screen docbook-xsl alsa-utils sysstat fuse3 build-essential unzip bash-completion parted dosfstools wget curl "
SHARED_DESKTOP_APPS=" nheko firefox-esr kwin-addons kde-standard konsole dolphin kde-spectacle print-manager digikam keepassxc telegram-desktop krita nextcloud-desktop handbrake calligra "
#REMOVED=" cockpit-pcp "
#TROUBLESOME_PACKAGES -  packages here that may not be available for your Debian release
TROUBLESOME_PACKAGES=" aardvark-dns shfmt podman-compose btop podman-toolbox yt-dlp power-profiles-daemon "
VIRTUALIZATION=" virt-manager qemu-system libvirt-daemon-system ovmf cockpit-machines"
PACKAGES=$BASE_PACKAGES$PACKAGES$SHARED_DESKTOP_APPS
#PACKAGES=$BASE_PACKAGES
TAR_EXCLUDES="--exclude=/.snapshots --exclude=/snapshots --exclude=/var/backups --exclude=/volumes/* --exclude=/mnt/* --exclude=/var/tmp/* --exclude=/tmp/* --exclude=/raid/* --exclude=/root/* --exclude=/var/cache/apt/archives/* --exclude=/proc/* --exclude=/.snapshots/* --exclude=/var/lib/libvirt/* --exclude=/dev/* --exclude=/sys/* --exclude=/home/* --exclude=/var/lib/flatpak --exclude=/var/lib/postgresql --exclude=/var/lib/containers"

partitionDetection() {
	#This is used for the installer to do script-based actions
	EFI="/dev/$(lsblk | grep $HARD_DISK | head -2 | tail -1 | sed 's/├─//' | cut -d ' ' -f1)"
	BTRFS="/dev/$(lsblk | grep $HARD_DISK | head -4 | tail -1 | sed 's/└─//' | cut -d ' ' -f1)"
	BOOT="/dev/$(lsblk | grep $HARD_DISK | head -3 | tail -1 | sed 's/├─//' | cut -d ' ' -f1)"
}
partitionDetection

auto_login() {
	mkdir -p $TARGET/etc/sddm.conf.d
	echo "[Autologin]" >$TARGET/etc/sddm.conf.d/autologin
	echo "User=$USER" >>$TARGET/etc/sddm.conf.d/autologin
	echo "Session=plasma.desktop" >>$TARGET/etc/sddm.conf.d/autologin
	echo "Relogin=false" >>$TARGET/etc/sddm.conf.d/autologin
}

create-os-snapshots() {
	echo
		mkdir $2
		echo "[Creating new OS snapshot to $2/$3.tgz]"
		echo
		echo
		NEW_TAR_EXCLUDES="$TAR_EXCLUDES --exclude=$TARGET/*"
		echo
		time tar cpzf $2/$3.tgz $NEW_TAR_EXCLUDES /
		chown $USER:$USER $2/$3.tgz
}

homeBackup() {
	echo
	echo "[Copying USER data from /home to $TARGET/@home]"
	echo
	rsync -a --delete /home/ --exclude=.cache --exclude=.local/share/flatpak --exclude=.local/share/containers $TARGET/\@home/
}

os-backup() {
	umount $TARGET

	printf "$DISK_PASSWORD" | cryptsetup open ${BTRFS} $ROOT_MAPPER_NAME

	if [[ -e "/dev/mapper/$ROOT_MAPPER_NAME" ]]; then
		echo
		echo "[Mounting.....]"
		echo
		mount /dev/mapper/$ROOT_MAPPER_NAME $TARGET

		if [[ -e "$TARGET/@$ROOT_NAME/usr/bin/bash" ]]; then
			if [ "$1" = "home" ]; then
				homeBackup
			fi

			create-os-snapshots "$1" "$2" "$3"
		else
			echo
			echo "Aborting Install, $TARGET/@$ROOT_MAPPER_NAME/usr/bin/bash not found!"
			echo
			echo
			exit 1
		fi

	else
		echo
		echo "Aborting Install, /dev/mapper/$ROOT_MAPPER_NAME not found!"
		echo
		echo
		exit 1
	fi

	ls $TARGET/
	umount $TARGET
	cryptsetup close $ROOT_MAPPER_NAME
}

os-restore() {
	partitions
	rm -rf $TARGET/usr $TARGET/sbin $TARGET/lib32 $TARGET/libx32 $TARGET/lib $TARGET/vmlinuz* $TARGET/initrd* $TARGET/bin $TARGET/var $TARGET/root $TARGET/opt $TARGET/etc $TARGET/run
	clear
	echo "[Restoring OS tarfile from $4/$2.tgz]"
	echo
	tar xfp $4/$2.tgz -C $TARGET/

	if [ "$3" = "home" ]; then
		echo "[Restoring /home]"
		echo
		rsync -a --delete /home/ $TARGET/home/
	fi

	fstab
	cp -f debian.sh $TARGET/
	systemMounts
	chmod +x $TARGET/debian.sh
	chroot $TARGET /debian.sh bootloader $1 $2 $5
	chroot $TARGET /debian.sh btrfs-tweaks
	chroot $TARGET /debian.sh accounts
	chown -R $USER:$USER $TARGET/home/$USER
	auto_login
	rm -f $TARGET/debian.sh
	unmount
}

systemMounts() {
	mount -o rbind /dev $TARGET/dev
	mount -o rbind /dev/pts $TARGET/dev/pts
	mount -o rbind /proc $TARGET/proc
	mount -o rbind /sys $TARGET/sys
	mount -t efivarfs none $TARGET/sys/firmware/efi/efivars
}

decryptBoot() {
	KEYFILE='keyfile.key'
	echo
	echo "Setting LUKS to use Keyfile for password entry"
	echo
	echo
	echo "Clearing Old Keys"
	echo
	for i in 1 2 3 4 5 6; do
		printf "$DISK_PASSWORD" | cryptsetup luksKillSlot $1 $i
	done
	dd if=/dev/urandom of=/etc/$KEYFILE bs=1024 count=4
	chown root:root /etc/$KEYFILE
	chmod 0400 /etc/$KEYFILE
	echo
	echo "Adding new key......"
	echo
	printf "$DISK_PASSWORD" | cryptsetup luksAddKey $1 /etc/$KEYFILE
	sed -i "s/none/\/etc\/$KEYFILE/" /etc/crypttab
	echo "KEYFILE_PATTERN=\"/etc/*.key\"" >/etc/cryptsetup-initramfs/conf-hook
}

configure-repository() {
	echo 'force-unsafe-io' >$TARGET/etc/dpkg/dpkg.cfg.d/docker-apt-speedup

	if [ "$DEBIAN_RELEASE" == "testing" ]; then
		echo "deb https://deb.debian.org/debian $DEBIAN_RELEASE main contrib non-free non-free-firmware" >$TARGET/etc/apt/sources.list
		chroot $TARGET /usr/bin/apt update
		chroot $TARGET /usr/bin/bash -c "export DEBIAN_FRONTEND=noninteractive;/usr/bin/apt install -y $PACKAGES"
	else
		echo "deb https://deb.debian.org/debian $DEBIAN_RELEASE main contrib non-free non-free-firmware" >$TARGET/etc/apt/sources.list
		echo "deb https://deb.debian.org/debian-security $DEBIAN_RELEASE-security main" >>$TARGET/etc/apt/sources.list
		echo "deb https://deb.debian.org/debian $DEBIAN_RELEASE-updates main " >>$TARGET/etc/apt/sources.list
		echo "deb https://deb.debian.org/debian $DEBIAN_RELEASE-backports main" >>$TARGET/etc/apt/sources.list
		chroot $TARGET /usr/bin/apt update
		chroot $TARGET /usr/bin/bash -c "export DEBIAN_FRONTEND=noninteractive;/usr/bin/apt install -y $PACKAGES"
		chroot $TARGET /usr/bin/bash -c "export DEBIAN_FRONTEND=noninteractive;/usr/bin/apt dist-upgrade -y -t $DEBIAN_RELEASE-backports"
		chroot $TARGET /usr/bin/bash -c "export DEBIAN_FRONTEND=noninteractive;/usr/bin/apt install -y -t $DEBIAN_RELEASE-backports $TROUBLESOME_PACKAGES"
		chroot $TARGET /usr/bin/bash -c "export DEBIAN_FRONTEND=noninteractive;/usr/bin/apt auto-remove -y"
	fi

	echo 'DPkg::Post-Invoke {"/usr/bin/debian.sh snapshot";};' >$TARGET/etc/apt/apt.conf
}

make-image() {
	umount $TARGET
	mount -t tmpfs tmpfs -o size=11G,dev,exec $TARGET
	debootstrap --arch amd64 $DEBIAN_RELEASE $TARGET https://deb.debian.org/debian
	configure-repository
	locale
	custom_service_files
	cp -f debian.sh $TARGET/usr/bin/
	cp -f debian.tar $TARGET/etc/default/
	echo 'bash /usr/bin/debian.sh kernel-packages' >>$TARGET/setup.sh
	echo "bash /usr/bin/debian.sh bootloader $1 $ROOT_NAME $ROOT_MAPPER_NAME" >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh grub-snapshots' >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh desktop' >>$TARGET/setup.sh
	echo '/usr/bin/apt clean all' >>$TARGET/setup.sh
	chmod +x $TARGET/usr/bin/debian.sh
	chmod +x $TARGET/setup.sh
	chroot $TARGET /setup.sh
	rm -f $TARGET/setup.sh
	echo -e "ALGO=zstd\nPERCENT=60" | tee -a $TARGET/etc/default/zramswap
	cd $TARGET
	echo "[Creating new OS image to $1/$ROOT_NAME.tgz]"
	time tar cpzf $1/$ROOT_NAME.tgz $TAR_EXCLUDES .
	cd $1
	umount $TARGET
}

install() {
	partitions
	sed -i '/^SigLevel/s/^\(.*\)$/#\1\n/' /etc/pacman.conf
	sed -i '/#SigLevel/a SigLevel = Never' /etc/pacman.conf
	pacman -Sy archlinux-keyring debootstrap --noconfirm
	apt update
	apt install debootstrap -y
	rm -rf /debootstrap
	debootstrap --arch amd64 $DEBIAN_RELEASE $TARGET https://deb.debian.org/debian
	systemMounts
	cp -f /etc/resolv.conf $TARGET/etc/
	echo "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" >$TARGET/setup.sh
	configure-repository
	cp -f debian.tar $TARGET/etc/default/
	locale
	auto_login
	custom_service_files
	setup_script "$1"
	echo -e "ALGO=zstd\nPERCENT=60" | tee -a $TARGET/etc/default/zramswap
	unmount
}

desktop() {
	SERVICES+=(pmcd pmie pmlogger pmproxy exim4 cockpit.socket apparmor nfs-server smbd rpbind rpcbind.socket avahi-daemon bluetooth)
	for i in "${SERVICES[@]}"; do
		systemctl disable --now $i
	done

	apt -y purge apparmor
	apt remove unattended-upgrades chromium chromium-common chromium-sandbox epiphany-browser epiphany-browser-data -y
	apt autoremove -y
}

snapshots() {
	echo
	echo "Creating Snapshots....."
	echo
	DATE=$(echo $(date +%Y-%m-%d-%H-%M-%S))
	btrfs sub snapshot / /.snapshots/root-${DATE}
	#update-grub
}

remove-snapshots() {
	btrfs sub delete /.snapshots/*
	rm -f /boot/loader/entries/root-*
}

flatpaks() {
	flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
	for i in "${FLATPAKS[@]}"; do
		echo $i
		flatpak install $i -y
	done
}

grub-snapshots() {
	cd /opt
	git clone https://github.com/Antynea/grub-btrfs.git
	cd /opt/grub-btrfs
	make
	make install
	systemctl enable --now grub-btrfsd.service
}

kernel-packages() {
	/usr/bin/apt install --reinstall -y linux-image-amd64 grub-efi efibootmgr plymouth plymouth-themes btrfs-progs cryptsetup-initramfs linux-image-amd64 linux-headers-amd64 firmware-iwlwifi firmware-linux firmware-linux-nonfree
}

secure-boot() {
	if [ -z "$1" ]; then
		clear
		echo
		echo "Error: No Disk specified!"
		echo
	else
		clear
		echo
		echo "Disabling Automatic Password Decryption for Hard Disk....."
		echo
		AUTO_DECRYPT='False'
		bootloader "$1" "$ROOT_NAME" "$ROOT_MAPPER_NAME"
	fi
}

bootloader() {
	if [ -z "$1" ]; then
		echo
		echo "Error: No Disk specified!"
		echo
	else
		ROOT_MAPPER_NAME="$3"
		ROOT_NAME="$2"
		rm -rf /boot/grub/themes
		mkdir -p /boot/grub/themes
		tar xf /etc/default/debian.tar -C /boot/grub/themes/
		plymouth-set-default-theme -R spacefun
		echo "$ROOT_MAPPER_NAME UUID=$(/sbin/blkid | grep $BTRFS | cut -d '"' -f2)  none luks" >/etc/crypttab
		if [ "$AUTO_DECRYPT" == "True" ]; then
			decryptBoot "${BTRFS}"
		fi
		/sbin/update-initramfs -c -k all
		echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash\"" >/etc/default/grub
		echo "GRUB_CMDLINE_LINUX=cryptdevice=UUID=$(/sbin/blkid | grep $BTRFS | cut -d '"' -f2):$ROOT_MAPPER_NAME root=UUID=$(/sbin/blkid | grep $ROOT_MAPPER_NAME | cut -d '"' -f4) rootflags=subvol@${ROOT_NAME} mitigations=-off" >>/etc/default/grub
		echo "GRUB_ENABLE_CRYPTODISK=n" >>/etc/default/grub
		echo "GRUB_DISABLE_OS_PROBER=true" >>/etc/default/grub
		echo "GRUB_THEME=/boot/grub/themes/theme.txt" >>/etc/default/grub
		/sbin/grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=debian
		/sbin/update-grub
	fi

}

function setup_script() {
	cp -f debian.sh $TARGET/usr/bin/
	echo 'bash /usr/bin/debian.sh kernel-packages' >>$TARGET/setup.sh
	#sed -i 's/most/dep/i' $TARGET/etc/initramfs-tools/initramfs.conf
	echo "bash /usr/bin/debian.sh bootloader $1 $ROOT_NAME $ROOT_MAPPER_NAME" >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh grub-snapshots' >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh accounts' >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh desktop' >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh btrfs-tweaks' >>$TARGET/setup.sh

	chmod +x $TARGET/usr/bin/debian.sh
	chmod +x $TARGET/setup.sh
	chroot $TARGET /setup.sh
	rm -f $TARGET/setup.sh
}

btrfs_filesytem() {
	btrfs sub create $TARGET/@$ROOT_NAME
	btrfs sub create $TARGET/@.snapshots
	btrfs sub create $TARGET/@libvirt
	btrfs sub create $TARGET/@home
	btrfs sub create $TARGET/@root
	btrfs sub create $TARGET/@containers
	echo
	echo "Binding BTRFS Root"
	echo
	umount $TARGET
	mount -o $COMPRESSION,subvol=@$ROOT_NAME /dev/mapper/$ROOT_MAPPER_NAME $TARGET
}

mounts() {
	echo
	echo "Mounting......."
	mount /dev/mapper/$ROOT_MAPPER_NAME $TARGET
	btrfs_filesytem
	mkdir -p $TARGET/boot
	mount -t ext4 $BOOT $TARGET/boot
	mkdir -p $TARGET/boot/efi
	mount $EFI $TARGET/boot/efi
	#CONFIGURE DATA DIRS (HOME)
	mkdir $TARGET/home
	mount -o subvol=@home /dev/mapper/$ROOT_MAPPER_NAME $TARGET/home
}

unmount() {
	echo
	echo "Unmounting....."
	umount $TARGET/proc
	umount $TARGET/dev
	umount $TARGET/sys
	umount $TARGET/boot
	umount $TARGET/home
	umount -lR $TARGET/*
	umount -R $TARGET
	umount -R $TARGET
	cryptsetup close $ROOT_MAPPER_NAME
}

locale() {
	echo "ln -sf /usr/share/zoneinfo/US/Mountain /etc/localtime" >>$TARGET/setup.sh
	echo "hwclock --systohc" >>$TARGET/setup.sh
	echo "en_US.UTF-8 UTF-8" >$TARGET/etc/locale.gen
	echo "locale-gen" >>$TARGET/setup.sh
}

partitions() {
	echo
	echo "Setting Up Partitions....."
	printf "$DISK_PASSWORD" | cryptsetup open ${BTRFS} $ROOT_MAPPER_NAME

	if [[ -e "/dev/mapper/$ROOT_MAPPER_NAME" ]]; then
		echo
		echo "Formatting $EFI"
		echo
		echo y | mkfs.vfat $EFI
		echo "Formatting $BOOT"
		echo y | mkfs.ext4 $BOOT
		mounts
		fstab
	else
		echo
		echo "Aborting Install, /dev/mapper/$ROOT_MAPPER_NAME not found!"
		echo
		echo
		exit 1
	fi
}

fstab() {
	mkdir $TARGET/etc
	echo "UUID=$(/sbin/blkid | grep ${BOOT} | cut -d '"' -f2)  /boot ext4 defaults 0 1" >$TARGET/etc/fstab
	echo "UUID=$(/sbin/blkid | grep ${EFI} | cut -d '"' -f4)  /boot/efi vfat umask=0077 0 1" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME / btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@$ROOT_NAME 0 1" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME /.snapshots btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@.snapshots 0 1" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME /var/lib/libvirt btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@libvirt 0 1" >>$TARGET/etc/fstab
	echo "tmpfs /var/log tmpfs defaults,dev,exec 0 0" >>$TARGET/etc/fstab
	echo "tmpfs /tmp tmpfs defaults 0 0" >>$TARGET/etc/fstab
	#echo "tmpfs /var/tmp tmpfs defaults 0 0" >>$TARGET/etc/fstab
	echo "tmpfs /home/${USER}/.cache tmpfs rw,user,exec 0 0" >>$TARGET/etc/fstab
	echo "tmpfs /home/${USER}/Downloads tmpfs rw,user,exec 0 0" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME /home btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@home 0 1" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME /root btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@root 0 1" >>$TARGET/etc/fstab
	echo "/dev/mapper/$ROOT_MAPPER_NAME /var/lib/containers btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@containers 0 1" >>$TARGET/etc/fstab
}

accounts() {
	echo
	echo "Set Password for $USER"
	useradd -m -s /bin/bash $USER
	echo "$USER:$USER_PASSWORD" | chpasswd
	gpasswd -a $USER wheel
	gpasswd -a $USER network
	gpasswd -a $USER video
	gpasswd -a $USER libvirt
	gpasswd -a $USER netdev
	gpasswd -a $USER adm
	echo "$USER ALL=(ALL) ALL" >/etc/sudoers
	echo "root ALL=(ALL) ALL" >>/etc/sudoers
	echo
	echo "Setting ROOT Password:"
	echo "root:$ROOT_PASSWORD" | chpasswd
	/usr/bin/hostnamectl set-hostname $ROOT_NAME
}

btrfs-tweaks() {
	DISABLE_COW=("/var/lib/docker" "/var/lib/containers" "/volumes" "/var/lib/mysql" "/var/lib/libvirt")

	for i in "${DISABLE_COW[@]}"; do
		chattr -R +C $i
	done
}

custom_service_files() {
	echo "systemctl set-default graphical.target" >>$TARGET/setup.sh

	echo "[Unit]" >$TARGET/etc/systemd/system/powertop.service
	echo "Description=Powertop tunings" >>$TARGET/etc/systemd/system/powertop.service
	echo "[Service]" >>$TARGET/etc/systemd/system/powertop.service
	echo "Type=oneshot" >>$TARGET/etc/systemd/system/powertop.service
	echo "ExecStart=/usr/sbin/powertop --auto-tune" >>$TARGET/etc/systemd/system/powertop.service
	echo "[Install]" >>$TARGET/etc/systemd/system/powertop.service
	echo "WantedBy=multi-user.target" >>$TARGET/etc/systemd/system/powertop.service

}

initialize-disk() {
	parted /dev/$HARD_DISK mklabel gpt
	parted /dev/$HARD_DISK mkpart primary fat32 1MiB 200MiB
	parted /dev/$HARD_DISK mkpart primary ext3 200MiB 700MiB
	parted /dev/$HARD_DISK set 1 esp on
	parted /dev/$HARD_DISK mkpart P2 ext3 700MiB 100%
	printf "$DISK_PASSWORD\n$DISK_PASSWORD" | cryptsetup luksFormat ${BTRFS}
	printf "$DISK_PASSWORD" | cryptsetup open ${BTRFS} $ROOT_MAPPER_NAME
	echo
	echo "Formatting....."
	echo y | mkfs.btrfs /dev/mapper/$ROOT_MAPPER_NAME --force
	echo;echo "Initialize Complete. Please reboot your machine to avoid any issues";echo
}

wifi() {
	iwctl --passphrase $WIRELESS_PASSWORD station $WIRELESS_INTERFACE connect $SSID
}

show-help() {
	clear
	echo
	echo "[debian.sh arguments]"
	echo
	echo "./debian.sh install"
	echo "./debian.sh backup"
	echo "./debian.sh restore"
	echo "./debian.sh make-image"
	echo "./debian.sh secure-boot"
	echo "./debian.sh wifi"
	echo "./debian.sh bootloader [disk] [ROOT_NAME] [ROOT_MAPPER_NAME]"
	echo "./debian.sh initialize"
	echo "./debian.sh tar [device name] [location]"
	echo "./debian.sh snapshot"
	echo "./debian.sh reomve-snapshot"
	echo "./debian.sh btrfs-tweaks"
	echo
}

menu() {
	clear
	echo
	echo "[Welcome to Verita84's Debian Installer System]"
	echo
	echo "[1] Install"
	echo "[2] Backup"
	echo "[3] Restore"
	echo "[4] Create a deployable System Image"
	echo "[5] Enable/Disable Disk Password at Boot"
	echo "[6] Initialize Disk"
	echo
	read -p 'Your Choice: ' choice
	if [[ $choice = 1 ]]; then
		clear
		echo "[Install] OS]"
		echo
		echo
		read -p 'Debian Version: ' -e -i "stable" DEBIAN_RELEASE
		set-devices
		install "$HARD_DISK"
	elif [[ $choice = 2 ]]; then
		clear
		echo "[Backup OS]"
		echo
		set-devices
		read -p 'Backup Home Directory? : ' -e -i 'y' home_backup
		read -p 'OS Backup Directory Location : ' -e -i "/install/\@$ROOT_NAME/var/backups" backup_directory
		if [[ $home_backup = *n* ]]; then
			os-backup "none" "$backup_directory" "$ROOT_NAME"
		else
			os-backup "home" "$backup_directory" "$ROOT_NAME"
		fi
	elif [[ $choice = 3 ]]; then
		clear
		echo "[Restore from Backup]"
		echo
		echo
		set-devices
		read -p 'Restore Directory Image Source: ' -e -i "/var/backups" restore_directory
		read -p 'Restore Home Directory? : ' -e -i 'n' home_restore
		read -p 'Backup file name to restore: ' -e -i 'debian' backup_name

		if [[ $home_restore = *n* ]]; then
			os-restore "$HARD_DISK" "$backup_name" "none" "$restore_directory" "$ROOT_MAPPER_NAME"
		else
			os-restore "$HARD_DISK" "$backup_name" "home" "$restore_directory" "$ROOT_MAPPER_NAME"
		fi
	elif [[ $choice = 4 ]]; then
		clear
		echo
		echo "[Create Debian Image]"
		echo
		read -p 'Location to Store Image: ' -e -i "/home/$USER" image_directory
		read -p 'Image File Name: ' -e -i "debian" ROOT_NAME
		read -p 'Debian Version: ' -e -i "stable" DEBIAN_RELEASE
		ROOT_MAPPER_NAME="/dev/foo"
		make-image "$image_directory"
	elif [[ $choice = 5 ]]; then
		clear
		echo "[Password Protection at Boot]"
		echo
		echo
		set-devices
		read -p 'Unlock Disk without password at boot time? ' -e -i "y" root_name
		if [[ $pass_change = *n* ]]; then
			bootloader "$HARD_DISK" "$ROOT_NAME" "$ROOT_MAPPER_NAME"
		else
			secure-boot "$HARD_DISK"
		fi
	elif [[ $choice = 6 ]]; then
		clear
		echo "[Initialize Disk]"
		echo
		echo
		set-devices
		initialize-disk
	else
		menu
	fi

}

set-devices() {
	i=0
	while [ $i != "n" ]; do
		clear
		echo
		echo "Disks and Partitions:"
		echo
		cat /proc/partitions
		echo
		echo "Erase the line and press enter to skip to the next detected disk"
		echo
		i=$(expr $i + 1)
		read -p 'Disk Device to Use: ' -e -i $(lsblk | grep -i disk | grep -Evi 'swap' | cut -d ' ' -f1 | head -$i | tail -1) device
		if [[ ! -z $device ]]; then
			i="n"
		fi
	done

	read -p 'BTRFS Root Volume name:  ' -e -i "debian" root_name
	read -p 'LUKS Device Mapper Name:  ' -e -i "root" device_mapper_name
	HARD_DISK=$device
	partitionDetection
	ROOT_NAME=$root_name
	ROOT_MAPPER_NAME=$device_mapper_name
}

if [ "$1" = "desktop" ]; then
	desktop
elif [ "$1" = "tar" ]; then
	create-os-snapshots "null" "$3" "$2"
elif [ "$1" = "kernel-packages" ]; then
	kernel-packages
elif [ "$1" = "upgrade-system" ]; then
	upgrade-system
elif [ "$1" = "wifi" ]; then
	wifi
elif [ "$1" = "accounts" ]; then
	accounts
elif [ "$1" = "flatpaks" ]; then
	flatpaks
elif [ "$1" = "bootloader" ]; then
	bootloader "$2" "$3" "$4"
elif [ "$1" = "snapshot" ]; then
	snapshots
elif [ "$1" = "grub-snapshots" ]; then
	grub-snapshots
elif [ "$1" = "btrfs-tweaks" ]; then
	btrfs-tweaks
elif [ "$1" = "remove-snapshot" ]; then
	remove-snapshots
elif [ "$1" = "help" ]; then
	show-help
else
	menu
fi