#! /usr/bin/env sh

# state

## user-configured settings
TORI_ROOT="$HOME/.config/tori"

## global constants
OS="$(uname -s)"

## global state
base_files=
bkp_files=
user_packages=
system_packages=

# behavior

## utility functions

log() {
	local level="$1" # unimplemented
	local message="$2"

	if [ -n "$DEBUG" ] && [ $level = debug ]; then
		printf "$(date "+%H:%M:%N") $message\n"
	fi
}

## configuration processing functions

scan_directory() {
	local target="$1"
	local files=
	local escaped_config_root="$(echo $TORI_ROOT | sed 's/\//\\\//g')"

	if [ -d "$target" ]; then
		scan="$(find "$target" -type f)"
		for line in $scan; do
			line="$(echo $line | sed "s/$escaped_config_root\///")"
			files="$line\n$files"
		done
	fi

	echo "$files"
}

scan_packages() {
	local package_manager
	local args__get_manually_installed
	local system_packages_eval

	if [ $OS = "FreeBSD" ]; then
		package_manager="pkg"
		args__get_manually_installed='query -e "%a = 0" "%n"'
	fi

	system_packages=$(eval "$package_manager $args__get_manually_installed")
	user_packages="$(cat $TORI_ROOT/packages | sort | uniq)"

	if [ "$system_packages" = "$user_packages" ]; then
		log debug "packages match"
	else
		log debug "packages mismatch"
		log debug "system: $system_packages"
		log debug "user: $user_packages"
	fi
}

base_files="$(scan_directory "$TORI_ROOT/base")"
bkp_files="$(scan_directory "$TORI_ROOT/bkp")"

log debug "collected base files:\n$base_files"
log debug "collected bkp files:\n$bkp_files"

scan_packages