haproxy letsecrypt deploy hook

#!/usr/bin/env bash

declare -a _DOMAINS

# domains are given in a variable, space separated
if [ ! -z "$RENEWED_DOMAINS" ]; then
        echo $RENEWED_DOMAINS
        _DOMAINS=($RENEWED_DOMAINS)
else
        exit
fi

for _DOMAIN in "${_DOMAINS[@]}"; do
        echo "Deploying certificate for '${_DOMAIN}'"

        # check for wildcard domain, files are stored without *. prefix
        if [[ "$_DOMAIN" =~ ^\*\..*$ ]]; then
                _DOMAIN=${_DOMAIN:2}
        fi

        # check if domain files exist before deploying them
        if [ -f /etc/letsencrypt/live/${_DOMAIN}/fullchain.pem -a -f /etc/letsencrypt/live/${_DOMAIN}/privkey.pem ]; then
                cat /etc/letsencrypt/live/${_DOMAIN}/fullchain.pem /etc/letsencrypt/live/${_DOMAIN}/privkey.pem > /etc/haproxy/certs/${_DOMAIN}.pem
        else
                echo "Missing certificate files"
        fi
done