#!/bin/bash

get_latest_release() {
  curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
    grep '"tag_name":' |                                            # Get tag line
    sed -E 's/.*"([^"]+)".*/\1/'                                    # Pluck JSON value
}

## last release
a=$(get_latest_release "ether/etherpad-lite")
## installed release
b=$(cat /var/www/etherpad-lite/CHANGELOG.md  | grep '#' | head -n 1 | tr -d '# ' )


if [ $a == $b ]
then
    echo "OK"
    exit 0
else
    echo "WARNING : new version available, installed is $b, last is $a."
    exit 1
fi