#!/bin/bash
this="${0##*/}"
this_version="2025-09-25"
USAGE="\
	$this@v$this_version
	Wrapper around '/etc/os-release' to show Ubuntu (like) os info.
	Usage:	$this --[help|all|raw]

		'all' [default] prints all infos
		'pick' prints only given key (default key is 'DESCRIPTION')
		'raw' cats '/etc/os-release'
	   'help' prints this text

	Examples:
		$this --all
		$this --pick NAME
		$this --pick VERSION_NAME
		$this --all | grep NAME
"
arg=${1:---all}
if [[ "$arg" = "--help" ]]; then
	echo -e "$USAGE"
	exit 0
fi
if [[ "$arg" = "--raw" ]]; then
	cat /etc/os-release
	exit 0
fi

. /etc/os-release
out="ID=$ID"
out="${out}\nDESCRIPTION=$PRETTY_NAME"
case "$ID" in
	  neon) out="${out}\nNAME=$NAME (${VARIANT:-User Edition})"
			out="${out}\nVERSION=$VERSION ($VERSION_ID)"
			;;
		 *) out="${out}\nNAME=$NAME"
			out="${out}\nVERSION=$VERSION"
			;;
esac
out="${out}\nVERSION_NICK=$UBUNTU_CODENAME"
codename="$(grep "$(lsb_release -rs)" /usr/share/python-apt/templates/Ubuntu.info | grep -m 1 "Description: Ubuntu " | cut -d "'" -f2)"
out="${out}\nVERSION_NAME=$codename"
# http://www.releases.ubuntu.com/jammy/
out="${out}\nLIKE=$ID_LIKE"
out="${out}\n$(grep URL /etc/os-release | sed 's/^\([A-Z_]*\)_URL/URL_\1/')"

if [[ "$arg" = "--all" ]]; then
	echo -e "$out"
	exit 0
fi
if [[ "$arg" = "--pick" ]]; then
	echo -e "$(echo -e "$out" | grep "\b${2:-DESCRIPTION}\b" | cut -d = -f 2-)"
	exit 0
fi

echo "Wrong argument, see '--help'."
exit 1