Docker-Swarm-Loadbalancer/php/nginx/letsencrypt.runit

#!/usr/bin/env bash
if [[ -z ${LETSENCRYPT_DOMAINS} ]]; then
	echo "LetsEncrypt not enabled"
	while true; do
		sleep infinity
	done
fi

if [[ -z ${LETSENCRYPT_EMAIL} ]]; then
	echo "LetsEncrypt not enabled - You must set LETSENCRYPT_EMAIL"
	while true; do
		sleep infinity
	done
fi

if [[ ${LETSENCRYPT_MODE,,} == "production" ]]; then
	echo -e "LetsEncrypt is running against the \e[32mPRODUCTION\e[0m servers."
	LETSENCRYPT_MODE=""
else
	echo -e "LetsEncrypt is running against the \e[31mSTAGING\e[0m servers."
	LETSENCRYPT_MODE="--test-cert"
fi
echo -e "To change this, change the value of LETSENCRYPT_MODE"

# Give Nginx a moment to start before we kill it again.
sleep 30

echo -e "Certbot is running for \e[33m${LETSENCRYPT_EMAIL}\e[0m / \e[33m${LETSENCRYPT_DOMAINS}\e[0m..."
(
	set -x
	certbot \
		certonly \
		--nginx \
		"${LETSENCRYPT_MODE}" \
		-d "${LETSENCRYPT_DOMAINS}" \
		-n \
		-m "${LETSENCRYPT_EMAIL}" \
		--agree-tos
)

echo -e "Certbot complete!"

# replace the self-certs with these lovely new certs.
if [[ -f "/etc/letsencrypt/live/${LETSENCRYPT_DOMAINS}/fullchain.pem" ]]; then
	sed -i "s|ssl_certificate .*|ssl_certificate     /etc/letsencrypt/live/${LETSENCRYPT_DOMAINS}/fullchain.pem;|g" /etc/nginx/sites-enabled/default-ssl
	sed -i "s|ssl_certificate_key .*|ssl_certificate_key /etc/letsencrypt/live/${LETSENCRYPT_DOMAINS}/privkey.pem;|g" /etc/nginx/sites-enabled/default-ssl

	echo "Reloading Nginx"
	nginx -s reload
	# Sleep for 24 hours and try again tomorrow with a renewal, just in case.
	sleep 86400
else
	echo -e "LetsEncrypt \e[31mFAILED TO GENERATE CERTS\e[0m. Will try again in an hour."
	sleep 3600
fi