#!/bin/bash
########################
# What this script is:
#
# An automatic installer for Debian Stable with the following features:
# 1. BTRFS with Grub Snapshots
# 2. Full-disk-encryption
# 3. Hibernation
# 4. GNOME, CINNAMON, XFCE, or KDE Desktop
# 5. The ability to build a custom and deployable image onto any machine
# 6. Easily create a bootable USB drive
# 7. Automatic Partitioning
# 8. Bypass entering encrypted disk password at boot time if desired
#
# 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="verita84"
USER_PASSWORD="REM&rap234"
ROOT_PASSWORD="REM&rap234"
WIRELESS_PASSWORD='81572nt2k'
SSID='Tribble'
WIRELESS_INTERFACE='wlan0'
DISK_PASSWORD='REM&rap234'
COMPRESSION='compress=zstd:10'
AUTO_DECRYPT='True'
FLATPAKS+=(io.exodus.Exodus us.zoom.Zoom)
DESKTOP="KDE"
BROWSER="brave"
#Packages
BASE_PACKAGES=" firmware-realtek neofetch linux-image-amd64 grub-efi efibootmgr plymouth plymouth-themes duperemove btrfs-compsize btrfs-progs cryptsetup-initramfs linux-headers-amd64 firmware-iwlwifi firmware-linux firmware-linux-nonfree packagekit cockpit-packagekit cockpit-storaged shfmt aardvark-dns power-profiles-daemon iptables-persistent resolvconf wireguard wireguard-tools nmap libsecret-tools libglu1-mesa preload powertop acpi btop inotify-tools debootstrap cups apt-transport-https samba samba-common nfs-common nfs-kernel-server linux-cpupower locales zram-tools acpid ghostscript cifs-utils ntp vim-airline rsync screen base udev git network-manager cryptsetup network-manager-openvpn ntp screen docbook-xsl alsa-utils sysstat fuse3 build-essential unzip bash-completion parted dosfstools wget curl "
KDE_DESKTOP_ENV=" krita libdbus-glib-1-2 korganizer libreoffice print-manager kwin-addons kde-standard konsole dolphin kde-spectacle "
XFCE_DESKTOP_ENV=" xfce4 xfce4-goodies xfce4-whiskermenu-plugin xfce4-pulseaudio-plugin slim "
CINNAMON_DESKTOP_ENV=" cinnamon slim gimp gnome-screenshot gimp "
GNOME_DESKTOP_ENV=" gnome gnome-music gdm3 gnome-shell-extension-arc-menu gnome-shell-extension-desktop-icons-ng gnome-shell-extension-tiling-assistant gnome-shell-extension-no-annoyance gnome-shell-extension-dash-to-panel gnome-shell-extension-weather gnome-shell-extension-dashtodock gnome-shell-extension-appindicator gnome-tweaks synaptic gimp "
SHARED_DESKTOP_APPS=" syncthing keepassxc telegram-desktop handbrake vlc yt-dlp "
#VIRTUALIZATION=" virt-manager qemu-system libvirt-daemon-system ovmf cockpit-machines"
PACKAGES=""
TAR_EXCLUDES="--exclude=/var/lib/strfry --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/postgresql --exclude=/var/lib/containers "

installVPN() {
	cd /tmp
	rm -f *.deb
	wget --content-disposition https://mullvad.net/download/app/deb/latest
	apt install -y /tmp/*.deb
	systemctl enable --now mullvad-daemon
}

partitionDetection() {
	#This is used for the installer to do script-based actions
	EFI=$(blkid | grep $HARD_DISK | sort | cut -d ":" -f1 | head -1 | tail -1)
	BOOT=$(blkid | grep $HARD_DISK | sort | cut -d ":" -f1 | head -2 | tail -1)
	BTRFS=$(blkid | grep $HARD_DISK | sort | cut -d ":" -f1 | head -3 | tail -1)
	SWAP=$(blkid | grep $HARD_DISK | sort | cut -d ":" -f1 | head -4 | tail -1)
}

partitionDetection

auto_login() {

	if [ -f "$TARGET/usr/bin/sddm" ]; then
		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
	fi

	if [ -f "$TARGET/usr/sbin/gdm3" ]; then
		sed -i '/daemon/a AutomaticLoginEnable=True' $TARGET/etc/gdm3/daemon.conf
		sed -i "/daemon/a AutomaticLogin = $USER" $TARGET/etc/gdm3/daemon.conf
	fi
}

hibernate-setup() {
	echo "[Sleep]" >/etc/systemd/sleep.conf
	echo "AllowSuspend=yes" >>/etc/systemd/sleep.conf
	echo "AllowHibernation=yes" >>/etc/systemd/sleep.conf
	echo "AllowSuspendThenHibernate=yes" >>/etc/systemd/sleep.conf
	echo "HibernateState=disk" >>/etc/systemd/sleep.conf
	echo "HibernateMode=platform" >>/etc/systemd/sleep.conf
	echo "HibernateDelaySec=1800" >>/etc/systemd/sleep.conf
	echo "HandleLidSwitch=suspend-then-hibernate" >>/etc/systemd/logind.conf
	echo "HandleLidSwitchExternalPower=suspend-then-hibernate" >>/etc/systemd/logind.conf
	unlink /usr/lib/systemd/system/systemd-suspend.service
	rm -f /usr/lib/systemd/system/systemd-suspend.service
	ln -s /usr/lib/systemd/system/systemd-suspend-then-hibernate.service /usr/lib/systemd/system/systemd-suspend.service
}

create-os-snapshots() {
	echo
	mkdir $2
	echo "[Creating new OS snapshot to $2/$3.tgz]"
	echo
	echo
	NEW_TAR_EXCLUDES="$TAR_EXCLUDES --exclude=/minio --exclude=$TARGET/* --exclude=/var/lib/docker "
	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 -o $COMPRESSION /dev/mapper/$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 "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 $DEBIAN_RELEASE-backports main contrib non-free-firmware" >>$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 "
		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 $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=15G,dev,exec $TARGET
	debootstrap --arch amd64 $DEBIAN_RELEASE $TARGET https://deb.debian.org/debian
	configure-repository
	locale
	custom_service_files
	rm -rf $TARGET/var/lib/flatpak
	cp -f debian.sh $TARGET/usr/bin/
	echo 'bash /usr/bin/debian.sh hibernate' >>$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 --exclude=proc/* .
	cd $1
	du -h $1/$ROOT_NAME.tgz | tail -1
	unmount
}

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
	locale
	auto_login
	custom_service_files
	setup_script "$1"
	echo -e "ALGO=zstd\nPERCENT=60" | tee -a $TARGET/etc/default/zramswap
	unmount
}

desktop() {
	SERVICES+=(mullvad-daemon 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

	if [ -f "/usr/bin/sddm" ]; then
		echo
		echo "Performing KDE Bloat Removal"
		echo
		BLOAT_APPS+=(dragonplayer akregator kate konqueror kdeconnect kdepim*)
		for i in "${BLOAT_APPS[@]}"; do
			echo "Removing: $i"
			apt remove --purge -y $i
			apt autoremove -y
		done
	fi

	if [ -f "/usr/sbin/gdm3" ]; then
		echo
		echo "Performing GNOME Bloat Removal"
		echo
		chmod -x /usr/lib/evolution/evolution-calendar-factory
		chmod -x /usr/lib/evolution/evolution-source-registry
		chmod -x /usr/lib/evolution/evolution-addressbook-factory
		chmod -x /usr/libexec/evolution-data-server/evolution-alarm-notify
		mv /usr/lib/evolution-data-server /usr/lib/evolution-data-server-disabled
		mv /usr/lib/evolution /usr/lib/evolution-disabled
		BLOAT_APPS+=(gnome-calendar evolution four-in-a-row iagno aisleriot gnome-mahjongg gnome-software lightsoff zutty gnome-taquin gnome-tetravex simple-scan gnome-text-editor gnome-chess gnome-contacts gnome-clocks unattended-upgrades apparmor gnome-sound-recorder hitori shotwell quadrapassel quadrapassel gnome-sudoku swell-foop gnome-maps transmission-gtk cheese libgnome-games-support-common chromium chromium-common chromium-sandbox epiphany-browser epiphany-browser-data)
		for i in "${BLOAT_APPS[@]}"; do
			echo "Removing: $i"
			apt remove --purge -y $i
			apt autoremove -y
		done
	fi

	if [ -f "/usr/bin/slim" ]; then
		echo
		echo "Performing Cinnamon Bloat Removal"
		echo
		chmod -x /usr/lib/evolution/evolution-calendar-factory
		chmod -x /usr/lib/evolution/evolution-source-registry
		chmod -x /usr/lib/evolution/evolution-addressbook-factory
		chmod -x /usr/libexec/evolution-data-server/evolution-alarm-notify
		mv /usr/lib/evolution-data-server /usr/lib/evolution-data-server-disabled
		mv /usr/lib/evolution /usr/lib/evolution-disabled
		BLOAT_APPS+=(evolution )
		for i in "${BLOAT_APPS[@]}"; do
			echo "Removing: $i"
			apt remove --purge -y $i
			apt autoremove -y
		done
	fi

	installBrowser
	#installElement
	installCodium
	installVPN
	installSteam
	hibernate-setup
	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() {
	echo
	echo "Installing Flatpaks......"
	echo
	flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
	for i in "${FLATPAKS[@]}"; do
		echo $i
		flatpak install --system $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
}

bootloader() {
	if [ -z "$1" ]; then
		echo
		echo "Error: No Disk specified!"
		echo
	else
		ROOT_MAPPER_NAME="$3"
		ROOT_NAME="$2"
		plymouth-set-default-theme -r
		echo "$ROOT_MAPPER_NAME UUID=$(/sbin/blkid | grep $BTRFS | cut -d '"' -f2)  none luks" >/etc/crypttab
		if [ "$AUTO_DECRYPT" == "True" ]; then
			decryptBoot "${BTRFS}"
		fi
		/sbin/update-initramfs -c -k all
		echo "GRUB_CMDLINE_LINUX_DEFAULT=\"quiet splash mitigations=off\"" >/etc/default/grub
		echo "GRUB_CMDLINE_LINUX=resume=UUID=$(/sbin/blkid | grep $SWAP | cut -d '"' -f2) cryptdevice=UUID=$(/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} " >>/etc/default/grub
		echo "GRUB_ENABLE_CRYPTODISK=n" >>/etc/default/grub
		echo "GRUB_DISABLE_OS_PROBER=true" >>/etc/default/grub
		echo "GRUB_TIMEOUT=1" >>/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/
	#sed -i 's/most/dep/i' $TARGET/etc/initramfs-tools/initramfs.conf
	echo 'bash /usr/bin/debian.sh hibernate' >>$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' >>$TARGET/setup.sh
	echo 'bash /usr/bin/debian.sh accounts' >>$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
	btrfs sub create $TARGET/@flatpak
	echo
	echo "Binding BTRFS Root"
	echo
	umount $TARGET
	mount -o $COMPRESSION,subvol=@$ROOT_NAME /dev/mapper/$ROOT_MAPPER_NAME $TARGET
}

installCodium() {
	curl -fSsL https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/raw/master/pub.gpg | gpg --dearmor | tee /usr/share/keyrings/vscodium.gpg >/dev/null
	echo "deb [arch=amd64 signed-by=/usr/share/keyrings/vscodium.gpg] https://download.vscodium.com/debs vscodium main" | tee /etc/apt/sources.list.d/vscodium.list
	apt update
	apt install codium -y
}

installFirefoxNightly() {
	cd /tmp
	rm -rf /opt/firefox-nightly
	apt remove firefox-esr -y
	apt install libdbus-glib-1-2 -y

	#Firefox Nightly
	wget -O /tmp/firefox.tar.gz "https://download.mozilla.org/?product=firefox-nightly-latest-ssl&os=linux64&lang=en-US"
	tar xf /tmp/firefox.tar.gz -C /tmp/
	mv /tmp/firefox /opt/firefox-nightly
	rm -rf /tmp/firefox*

	echo "[Desktop Entry]" >/usr/share/applications/firefox-nightly.desktop
	echo "Name=Firefox Nightly" >>/usr/share/applications/firefox-nightly.desktop
	echo "Comment=Web Browser" >>/usr/share/applications/firefox-nightly.desktop
	echo "Exec=/opt/firefox-nightly/firefox %u" >>/usr/share/applications/firefox-nightly.desktop
	echo "Terminal=false" >>/usr/share/applications/firefox-nightly.desktop
	echo "Type=Application" >>/usr/share/applications/firefox-nightly.desktop
	echo "Icon=/opt/firefox-nightly/browser/chrome/icons/default/default128.png" >>/usr/share/applications/firefox-nightly.desktop
	echo "Categories=Network;WebBrowser;" >>/usr/share/applications/firefox-nightly.desktop
	echo "MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;" >>/usr/share/applications/firefox.desktop
	echo "StartupNotify=true" >>/usr/share/applications/firefox-nightly.desktop
	echo "Actions=Private;" >>/usr/share/applications/firefox-nightly.desktop
	echo "[Desktop Action Private]" >>/usr/share/applications/firefox-nightly.desktop
	echo "Exec=/opt/firefox-nightly/firefox --private-window %u" >>/usr/share/applications/firefox-nightly.desktop
	echo "Name=Open in private mode" >>/usr/share/applications/firefox-nightly.desktop
}

installFirefox() {
	cd /tmp
	rm -rf /opt/firefox
	apt remove firefox-esr -y
	apt install libdbus-glib-1-2 -y

	#Firefox Stable
	wget -O /tmp/firefox.tar.gz "https://download.mozilla.org/?product=firefox-latest-ssl&os=linux64&lang=en-US"
	tar xf /tmp/firefox.tar.gz -C /opt/
	unlink /usr/bin/firefox
	ln -s /opt/firefox/firefox /usr/bin/firefox
	rm -rf /tmp/firefox*

	#Desktop/App Icon
	echo "[Desktop Entry]" >/usr/share/applications/firefox.desktop
	echo "Name=Firefox Stable" >>/usr/share/applications/firefox.desktop
	echo "Comment=Web Browser" >>/usr/share/applications/firefox.desktop
	echo "Exec=/opt/firefox/firefox %u" >>/usr/share/applications/firefox.desktop
	echo "Terminal=false" >>/usr/share/applications/firefox.desktop
	echo "Type=Application" >>/usr/share/applications/firefox.desktop
	echo "Icon=/opt/firefox/browser/chrome/icons/default/default128.png" >>/usr/share/applications/firefox.desktop
	echo "Categories=Network;WebBrowser;" >>/usr/share/applications/firefox.desktop
	echo "MimeType=text/html;text/xml;application/xhtml+xml;application/xml;application/vnd.mozilla.xul+xml;application/rss+xml;application/rdf+xml;image/gif;image/jpeg;image/png;x-scheme-handler/http;x-scheme-handler/https;" >>/usr/share/applications/firefox.desktop
	echo "StartupNotify=true" >>/usr/share/applications/firefox.desktop
	echo "Actions=Private;" >>/usr/share/applications/firefox.desktop
	echo "[Desktop Action Private]" >>/usr/share/applications/firefox.desktop
	echo "Exec=/opt/firefox/firefox --private-window %u" >>/usr/share/applications/firefox.desktop
	echo "Name=Open in private mode" >>/usr/share/applications/firefox.desktop
}

installSteam() {
	dpkg --add-architecture i386
	apt update
	apt install libc6:amd64 libc6:i386 libegl1:amd64 libegl1:i386 libgbm1:amd64 libgbm1:i386 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 libgl1:amd64 libgl1:i386 steam-libs-amd64:amd64 steam-libs-i386:i386 xterm libgl1-mesa-dri:i386 mesa-vulkan-drivers:i386 -y
	cd /tmp
	wget https://steamcdn-a.akamaihd.net/client/installer/steam.deb
	apt install -y /tmp/steam.deb
	apt install lutris -y
}

installBrave() {
	curl -fsSLo /usr/share/keyrings/brave-browser-archive-keyring.gpg https://brave-browser-apt-release.s3.brave.com/brave-browser-archive-keyring.gpg
	echo "deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg] https://brave-browser-apt-release.s3.brave.com/ stable main" | tee /etc/apt/sources.list.d/brave-browser-release.list
	apt update
	apt install brave-browser -y
	apt remove -y firefox-esr
	apt autoremove -y
}

installChrome() {
	curl -fSsL https://dl.google.com/linux/linux_signing_key.pub | gpg --dearmor | tee /usr/share/keyrings/google-chrome.gpg >>/dev/null
	echo deb [arch=amd64 signed-by=/usr/share/keyrings/google-chrome.gpg] http://dl.google.com/linux/chrome/deb/ stable main | tee /etc/apt/sources.list.d/google-chrome.list
	apt update
	apt install -y google-chrome-stable
}

installVivaldi() {
	curl -fsSL https://repo.vivaldi.com/archive/linux_signing_key.pub | gpg --dearmor | tee /usr/share/keyrings/vivaldi.gpg >/dev/null
	echo deb [arch=amd64,armhf signed-by=/usr/share/keyrings/vivaldi.gpg] https://repo.vivaldi.com/archive/deb/ stable main | sudo tee /etc/apt/sources.list.d/vivaldi.list
	apt update
	apt install -y vivaldi-stable
}

installEdge() {
	curl -fSsL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor | tee /usr/share/keyrings/microsoft-edge.gpg >/dev/null
	echo 'deb [signed-by=/usr/share/keyrings/microsoft-edge.gpg] https://packages.microsoft.com/repos/edge stable main' | tee /etc/apt/sources.list.d/microsoft-edge.list
	apt update -y
	apt install microsoft-edge-stable -y
}

installBrowser() {
	if [ "$BROWSER" = "brave" ]; then
		installBrave
	elif [ "$BROWSER" = "edge" ]; then
		installEdge
	elif [ "$BROWSER" = "firefox" ]; then
		installFirefox
	elif [ "$BROWSER" = "firefox-nightly" ]; then
		installFirefoxNightly
	elif [ "$BROWSER" = "vivaldi" ]; then
		installVivaldi
	else
		apt install -y firefox-esr
	fi
}

installElement() {
	wget -O /usr/share/keyrings/element-io-archive-keyring.gpg https://packages.element.io/debian/element-io-archive-keyring.gpg
	echo "deb [signed-by=/usr/share/keyrings/element-io-archive-keyring.gpg] https://packages.element.io/debian/ default main" | tee /etc/apt/sources.list.d/element-io.list
	apt update
	apt install -y element-desktop
}

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
		mkswap -f $SWAP
		mounts
		fstab
	else
		echo
		echo "Aborting Install, /dev/mapper/$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 "/dev/mapper/$ROOT_MAPPER_NAME /var/lib/flatpak btrfs noatime,nodiratime,autodefrag,$COMPRESSION,subvol=@flatpak 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" >>$TARGET/etc/fstab
	echo "tmpfs /home/${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
	echo "$SWAP none swap 0 0" >>$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 $ROOT_NAME
	#echo "$USER_PASSWORD" | chsh -s /usr/bin/zsh $USER
	#echo "$ROOT_PASSWORD" | chsh -s /usr/bin/zsh root
}

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/$HARD_DISK mklabel gpt
	parted -a optimal /dev/$HARD_DISK mkpart primary fat32 1MiB 200MiB
	parted -a optimal /dev/$HARD_DISK mkpart primary ext3 200MiB 700MiB
	parted -a optimal /dev/$HARD_DISK set 1 esp on
	parted -a optimal /dev/$HARD_DISK mkpart P2 ext3 700MiB 98%
	parted -a optimal /dev/$HARD_DISK mkpart P2 ext3 98% 100%
	partitionDetection
	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 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
}

tweaks() {
	clear
	echo
	echo "[Debian Installer System Tweaks]"
	echo
	echo "[1] Enable/Disable Disk Password at Boot"
	echo "[2] Create a deployable System Image"
	echo "[3] Reinstall Bootloader"
	echo "[4] Chroot into existing OS"
	echo
	read -p 'Your Choice: ' choice
	if [[ $choice = 1 ]]; then
		clear
		echo "[Password Protection at Boot]"
		echo
		echo
		set-devices
		read -p 'Unlock Disk without password at boot time? ' -e -i "y" pass_change
		if [[ $pass_change = *n* ]]; then
			AUTO_DECRYPT="False"
			bootloader "$HARD_DISK" "$ROOT_NAME" "$ROOT_MAPPER_NAME"
		else
			AUTO_DECRYPT="True"
			bootloader "$HARD_DISK" "$ROOT_NAME" "$ROOT_MAPPER_NAME"
		fi
	elif [[ $choice = 2 ]]; then
		clear
		echo
		echo "[Create Debian Image]"
		echo
		read -p 'Location to Store Image: ' -e -i "/home/$USER" image_directory
		read -p 'Image File Name: ' -e -i "debian" ROOT_NAME
		read -p 'Debian Version: ' -e -i "stable" DEBIAN_RELEASE
		read -p 'KDE, CINNAMON, XFCE, or GNOME: ' -e -i "KDE" DESKTOP
		if [[ $DESKTOP = *KDE* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$KDE_DESKTOP_ENV
		elif [[ $DESKTOP = *XFCE* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$XFCE_DESKTOP_ENV
		elif [[ $DESKTOP = *CINNAMON* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$CINNAMON_DESKTOP_ENV
		else
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$GNOME_DESKTOP_ENV
		fi
		ROOT_MAPPER_NAME="/dev/foo"
		make-image "$image_directory"
	elif [[ $choice = 3 ]]; then
		set-devices
		bootloader $HARD_DISK $ROOT_NAME $ROOT_MAPPER_NAME
	elif [[ $choice = 4 ]]; then
		set-devices
		partitions
		systemMounts

		if [[ -e "$TARGET/usr/bin/bash" ]]; then
			/usr/sbin/chroot $TARGET /usr/bin/bash
		fi
		unmount
	fi
}

menu() {
	clear
	echo
	echo "[Welcome to Verita84's Debian Installer System]"
	echo
	echo "[1] Install"
	echo "[2] Backup"
	echo "[3] Restore"
	echo "[4] Tools and Tweaks"
	echo "[5] 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
		read -p 'KDE, CINNAMON, XFCE, or GNOME: ' -e -i "KDE" DESKTOP
		if [[ $DESKTOP = *KDE* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$KDE_DESKTOP_ENV
		elif [[ $DESKTOP = *XFCE* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$XFCE_DESKTOP_ENV
		elif [[ $DESKTOP = *CINNAMON* ]]; then
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$CINNAMON_DESKTOP_ENV
		else
			PACKAGES=$BASE_PACKAGES$SHARED_DESKTOP_APPS$GNOME_DESKTOP_ENV
		fi
		set-devices
		install "$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
		tweaks
	elif [[ $choice = 5 ]]; 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" = "upgrade-system" ]; then
	upgrade-system
elif [ "$1" = "wifi" ]; then
	wifi
elif [ "$1" = "accounts" ]; then
	accounts
elif [ "$1" = "hibernate" ]; then
	hibernate-setup
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