#!/bin/bash
#
# Nagios plugin to check paste version
#
# Author : Obitanz <hb+chapril@unenieme.eu>
# Date :  17 Jul 2023
#

OK=0
WARNING=1
CRITICAL=2
UNKNOWN=3

function usage {
    echo "Usage : $0"
    echo "This script check if minetest games are up to date"
    result=${UNKNOWN}
}

if [ "$#" -ne 0 ]; then
    usage
else
    game_outdated=-1
    for game in $(ls -1d /srv/minetest.chapril.org/home/.minetest/games/*);
    do
        shortname=$(echo ${game} | cut -d "/" -f 7)
        lastVersion=$(cd ${game} && git -c 'versionsort.suffix=-' ls-remote --exit-code --refs --sort='version:refname' --tags origin '*.*.*' | tail --lines=1 | cut --delimiter='/' --fields=3)
        currentVersion=$(cd ${game} && git describe --tags --abbrev=0)

        if [ "${currentVersion}" = "${lastVersion}" ]; then
            result_msg=${result_msg}"\n${shortname} is up to date"
            if [ ${game_outdated} -eq -1 ]; then
                game_outdated=0
            fi
        else
            result_msg=${result_msg}"\nnew version available for ${shortname}, current is ${currentVersion}, last is ${lastVersion}"
            game_outdated=1
        fi
    done
    if [ ${game_outdated} -eq 0 ]; then
        echo "OK - all games are up to date"
        result=${OK}
    elif [ ${game_outdated} -eq -1 ]; then
        echo "UNKNWON - error during script execution"
        result=${UNKNOWN}
    else
        echo -e "WARNING - all games aren't up to date${result_msg}"
        result=${WARNING}
    fi
fi

exit $result