#!/usr/bin/env sh

export dfp
export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
export ENV_PATH="$XDG_CONFIG_HOME/lytedev-env"
export CURDIR

dfp="$(realpath "$(dirname "$0")"/../..)"

detect_os() {
	# NixOS
	if head /etc/os-release --lines 1 | grep 'NixOS$' >/dev/null 2>&1; then
		ln -s "$dfp/os/linux/nix" "$ENV_PATH/os-linux-nix" >/dev/null 2>&1
		return
	fi

	# Arch Linux
	if head /etc/os-release --lines 1 | grep 'Arch Linux' >/dev/null 2>&1; then
		ln -s "$dfp/os/linux/arch" "$ENV_PATH/os-linux-arch" >/dev/null 2>&1
		return
	fi

	# Pacman-based
	if command -v pacman; then
		ln -s "$dfp/os/linux/arch" "$ENV_PATH/os-linux-arch" >/dev/null 2>&1
		return
	fi

	# TODO: Debian

	echo "Failed to auto-detect your OS! Please setup your environments and run this script again."
	exit 3
}

if command -v git >/dev/null 2>&1; then
	if [ -f "$dfp/common/envs" ]; then
		# TODO: more shared init stuff?
		mkdir -p $ENV_PATH
		detect_os
		ls -la -R $ENV_PATH/*
		find "$ENV_PATH" | while read -r s; do
			f="$s/dotfiles-init.d.sh"
			if [ -f "$f" ]; then
				CURDIR="$s"
				. "$f"
			fi
		done
		$dfp/common/bin/dotfiles-setup
	else
		git clone "https://git.lyte.dev/lytedev/dotfiles.git" "$XDG_CONFIG_HOME/lytedev-dotfiles"
		cd "$XDG_CONFIG_HOME/lytedev-dotfiles" || { echo "Could not cd to dotfiles dir"; exit 2; }
		. ./common/bin/dotfiles-init
	fi
else
	echo "git not installed"
	exit 1
fi

# TODO: run provision script

# run_via_dotfiles_if_necessary() {
# 	# clone dotfiles and re-run from repo if we're not in the repo
# 	pushd "$(dirname "$0")"
# 	if git remote get-url origin | grep 'lytedev/dotfiles'; then
# 		echo "Already in dotfiles repo!"
# 	else
# 		echo "Setting up dotfiles for $EUID..."
# 		d="$HOME/.config/lytedev-dotfiles"
# 		mkdir --parents "$d"
# 		rm --recursive --force "$d"
# 		git clone "https://git.lyte.dev/lytedev/dotfiles" "$d"
# 		exec "$d/bin/dotfiles-init"
# 		exit 0
# 	fi
# 	popd
# }

# if [ "$EUID" -eq 0 ]; then
# 	if test $is_arch_linux -eq 1; then
# 		pacman -Sy --needed --noconfirm git inetutils openssh sudo
# 	fi
# 	run_via_dotfiles_if_necessary
# 	pushd "$(dirname "$0")/.."
# 	if test $is_nixos -eq 1; then
# 		symlink_nixos_config "$HOME/.config/lytedev-dotfiles/env/nix/"
# 		nix-channel --add https://nixos.org/channels/nixos-unstable nixos-unstable
# 		nix-channel --update
# 		nixos-rebuild switch # this should create the `daniel` user
# 	elif test $is_arch_linux -eq 1; then
# 		ls -la
# 		"env/arch-linux/provision.d/00-add-user.bash"
# 	fi
# 	c=/home/daniel/.home/.config/
# 	mkdir --parents "$c"
# 	chown -R daniel:users "$c"
# 	cp --recursive . "$c/lytedev-dotfiles"
# 	sudo --user daniel "$c/bin/init-dotfiles"
# 	popd
# 	exit 0
# else
# 	run_via_dotfiles_if_necessary
# 	echo
# 	echo
# 	echo
# 	echo "PREPARING TO GENERATE SSH KEY FOR USER"
# 	echo
# 	echo
# 	echo
# 	pushd "$HOME"
# 	keyfile=".ssh/$(hostname --short)"
# 	echo $keyfile
# 	if ! [ -f "$keyfile" ]; then
# 		mkdir --mode 700 --parents .ssh
# 		chmod 700 .ssh
# 		ls -la .ssh
# 		ssh-keygen -N '' -t ed25519 -f "$keyfile"
# 		mkdir --mode 755 --parents "$NICE_HOME/public"
# 		cp "$keyfile.pub" "$NICE_HOME/public"
# 	fi
# 	popd
# 	if test $is_nixos -eq 1; then
# 		FUNC=$(declare -f symlink_nixos_config)
# 		sudo sh -c "$FUNC; symlink_nixos_config \"$HOME/.config/lytedev-dotfiles/env/nix/\""
# 	elif test $is_arch_linux -eq 1; then
# 		sudo "$HOME/.config/lytedev-dotfiles/env/arch-linux/provision.sh"
# 	fi
# 	mkdir --parents "$NICE_HOME/img/walls"
# 	curl --silent --output "$NICE_HOME/img/walls/clouds_by_souredapply.png" \
# 		"https://art.ngfiles.com/images/530000/530895_souredapple_clouds.png"
# 	rm --recursive --force "$HOME/.wallpaper"
# 	ln --symbolic "$NICE_HOME/img/walls/clouds_by_souredapply.png" "$HOME/.wallpaper"
#
# 	# TODO: setup ssh/gpg keys
# 	# TODO: setup password store
#
# 	pushd "$HOME/.config/lytedev-dotfiles"
# 	git remote set-url origin "ssh://git@git.lyte.dev:2222/lytedev/dotfiles.git"
# 	./bin/setup-dotfiles
# 	popd
#
# 	# nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
# 	# nix-channel --update
# 	# nix-shell '<home-manager>' -A install
#
# 	# TODO: fetch password store
# 	# TODO: fetch notes database
# fi
#
# echo "Here is this machine's public SSH key:"
# echo "  $(cat "$HOME/.ssh/$(hostname --short).pub")"
# echo "It needs to be added to existing cloud-based git accounts"
# echo "and other machines before proceeding."
# echo
# echo "Don't forget to setup GPG keys by importing from an existing machine"
# echo "or adding new child keys!"
# if test $is_arch_linux -eq 1; then
# 	echo
# 	echo 'You will need to set a password for your new user.'
# fi
# echo
# echo "The simplest method for doing this is to run the following:"
# echo '  scp -r "$TARGET_MACHINE:~/.gnupg" "$HOME/.gnupg'