#!/bin/bash
#
# Nagios plugin to check mobilizon's version
#

# program return value
#       0 : OK
#       1 : CRITICAL
#       2 : WARNING new version available
#       3 : UNKNOWN github or local repo not probable

# project api for gitlab https://docs.gitlab.com/ee/api/tags.html
# upgrade documentation https://docs.joinmobilizon.org/administration/upgrading/
LOCAL_REPO=/srv/mobilizon.chapril.org/live
FRAMAGIT_PROJECT_ID=20125


function usage() {
	echo "Usage : $0"
}

#
if [ "$#" -ne 0 ]; then
    usage
else
    lastVersion=$(curl -s https://framagit.org/api/v4/projects/$FRAMAGIT_PROJECT_ID/releases | jshon -a -e name|cut -d '"' -f2|grep -v '[\^\(alpha\)]'|head -n 1)
    currentVersion=$(cd $LOCAL_REPO && git describe --exact-match --tags $(git log -n1 --pretty='%h') |cut -c 9-100 )
    # le tag se nomme ainsi "chapril-1.0.2" donc pour comparer uniquement les numéros de version on enlève le début du nom

	echo "current version:  $currentVersion"
   	echo "last version: $lastVersion"
    if [ "$currentVersion" = "$lastVersion" ]; then
	    echo "OK"
	    result=0
    else
	    echo "WARNING : new version available, current is $currentVersion, last is $lastVersion."
	    result=1
    fi
fi
exit $result