#!/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 : $0"
    echo "This script check if minetest mods are up to date"
    result=${UNKNOWN}
}

# INFO
# 3 mods actuels : filter, xban2, whitelist
# les 2 premiers n'utilisent pas les tags ==> possible d'utiliser les commit pour déterminer si du nouveau
# le 3e utilise les tags, ça semble se coller aux derniers commit
# git rev-parse HEAD pour avoir le hash du dernier commit local
# git ls-remote origin | head -1 | cut -d " " -f 1

if [ "$#" -ne 0 ]; then
    usage
else
    mod_outdated=0
    for mod in $(ls -1d /srv/minetest.chapril.org/home/.minetest/mods/*);
    do
        shortname=$(echo ${mod} | cut -d "/" -f 7)
        lastCommit=$(cd ${mod} && git ls-remote origin | head -1 | cut -d " " -f 1)
        currentCommit=$(cd ${mod} && git rev-parse HEAD)

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

exit $result