my fedora daily update script

gistfile1.txt

#!/bin/bash
# @parseArger-begin
# @parseArger-help "I send an SOS to the world" --option "help" --short-option "h"
# @parseArger-declarations
# @parseArger opt shutdown "shutdown after the value"
# @parseArger flag dnf "update dnf package" --on
# @parseArger flag flathub "update flatpak" --on
# @parseArger flag yes "auto yes" --short y
# @parseArger-declarations-end

# @parseArger-parsing
die()
{
	local _ret="${2:-1}"
	test "${_PRINT_HELP:-no}" = yes && print_help >&2
	echo "$1" >&2
	exit "${_ret}"
}


begins_with_short_option()
{
	local first_option all_short_options=''
	first_option="${1:0:1}"
	test "$all_short_options" = "${all_short_options/$first_option/}" && return 1 || return 0
}

# POSITIONALS ARGUMENTS
_positionals=();
# OPTIONALS ARGUMENTS
_arg_shutdown=
# FLAGS
_arg_dnf="on"
_arg_flathub="on"
_arg_yes="off"


print_help()
{
	echo -e "I send an SOS to the world:"
	echo -e "	--shutdown <shutdown>: shutdown after the value"
	echo -e "	--dnf|--no-dnf: update dnf package, on by default (use --no-dnf to turn it off)"
	echo -e "	--flathub|--no-flathub: update flatpak, on by default (use --no-flathub to turn it off)"
	echo -e "	-y|--yes|--no-yes: auto yes"
	echo -e "Usage :
	$0 [--shutdown <value>] [--[no-]dnf] [--[no-]flathub] [--[no-]yes]"
}

parse_commandline()
{
	_positionals_count=0
	while test $# -gt 0
	do
		_key="$1"
		case "$_key" in
			--shutdown)
				test $# -lt 2 && die "Missing value for the option: '$_key'" 1
				_arg_shutdown="$2"
				shift
				;;
			--shutdown=*)
				_arg_shutdown="${_key##--shutdown=}"
				;;
			
			--no-dnf|--dnf)
				_arg_dnf="on"
				test "${1:0:5}" = "--no-" && _arg_dnf="off"
				;;
			--no-flathub|--flathub)
				_arg_flathub="on"
				test "${1:0:5}" = "--no-" && _arg_flathub="off"
				;;
			-y|--no-yes|--yes)
				_arg_yes="on"
				test "${1:0:5}" = "--no-" && _arg_yes="off"
				;;
			-h|--help)
				print_help;
				exit 0;
				;;
			-h*)
				print_help;
				exit 0;
				;;
			*)
				_last_positional="$1"
				_positionals+=("$_last_positional")
				_positionals_count=$((_positionals_count + 1))
				;;
		esac
		shift
	done
}


handle_passed_args_count()
{
	local _required_args_string=""
	test "${_positionals_count}" -le 0 || _PRINT_HELP=yes die "FATAL ERROR: There were spurious positional arguments --- we expect at most 0 (namely: $_required_args_string), but got ${_positionals_count} (the last one was: '${_last_positional}')." 1
	test "${_positionals_count}" -ge 0 || _PRINT_HELP=yes die "FATAL ERROR: Not enough positional arguments - we require at least 0 (namely: $_required_args_string), but got only ${_positionals_count}." 1
}


assign_positional_args()
{
	local _positional_name _shift_for=$1;
	_positional_names="";
	shift "$_shift_for"
	for _positional_name in ${_positional_names};do
		test $# -gt 0 || break;
		eval "if [ \"\$_one_of${_positional_name}\" != \"\" ];then [[ \"\${_one_of${_positional_name}[*]}\" =~ \"\${1}\" ]];fi" || die "${_positional_name} must be one of: $(eval "echo \"\${_one_of${_positional_name}[*]}\"")" 1
eval "$_positional_name=\${1}" || die "Error during argument parsing, possibly an Argbash bug." 1;
		shift;
	done
}

print_debug()
{
	print_help
	# shellcheck disable=SC2145
	echo "DEBUG: $0 $@";
	
	echo -e "\tshutdown: ${_arg_shutdown | sed 's/-/_/g'}";
	echo -e "\tdnf: ${_arg_dnf | sed 's/-/_/g'}";
	echo -e "\tflathub: ${_arg_flathub | sed 's/-/_/g'}";
	echo -e "\tyes: ${_arg_yes | sed 's/-/_/g'}";

}

parse_commandline "$@"
handle_passed_args_count
assign_positional_args 1 "${_positionals[@]}"

# @parseArger-parsing-end
# print_debug "$@"
# @parseArger-end

if [[ "$_arg_dnf" = "on" ]]; then
	dnf_cmd="sudo dnf update --refresh";
	if [[ "$_arg_yes" = "on" ]]; then
		dnf_cmd+=" -y";
	fi
	$dnf_cmd;
fi

if [[ "$_arg_flathub" = "on" ]]; then
	fp_cmd="flatpak update";
	if [[ "$_arg_yes" = "on" ]]; then
		fp_cmd+=" -y";
	fi
	$fp_cmd;
fi

if [[ "$_arg_shutdown" != "" ]]; then
	if [[ "$_arg_shutdown" != "now" ]]; then
		_arg_shutdown="+$_arg_shutdown";
	fi
	shutdown "$_arg_shutdown";
fi