#!/bin/bash

if ! [ -x "$(command -v docker)" ]; then
  echo 'Error: docker is not installed.' >&2
  exit 1
fi


certbot_path="./data/certbot"
rsa_key_size=4096
domains=(dittmar.dev git.dittmar.dev vault.dittmar.dev api.dittmar.dev)
email="robindittmar@gmail.com" # Adding a valid address is strongly recommended
staging=0 # Set to 1 if you're testing your setup to avoid hitting request limits

echo "> cleaning up data directory"
rm -Rf $certbot_path

echo "> downloading recommended TLS parameters ..."
mkdir -p "$certbot_path/conf"
curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot-nginx/certbot_nginx/_internal/tls_configs/options-ssl-nginx.conf > "$certbot_path/conf/options-ssl-nginx.conf"
curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot/certbot/ssl-dhparams.pem > "$certbot_path/conf/ssl-dhparams.pem"

echo "> creating temporary certificates for domains $domains ..."
certs_path="/etc/letsencrypt/live/$domains"
mkdir -p "$certbot_path/conf/live/$domains"
docker run --rm \
  -v $certbot_path/conf:/etc/letsencrypt \
  --entrypoint openssl \
  certbot/certbot \
  req -x509 -nodes -newkey rsa:$rsa_key_size -days 1 -keyout "$certs_path/privkey.pem" -out "$certs_path/fullchain.pem" -subj '/CN=localhost'

echo "> starting nginx with temporary certificates ..."
./start-nginx.sh

echo "> removing temporary certificates ..."
docker run --rm \
  -v $certbot_path/conf:/etc/letsencrypt \
  --entrypoint /bin/sh \
  certbot/certbot \
  -c "rm -Rf /etc/letsencrypt/live/$domains && \
      rm -Rf /etc/letsencrypt/archive/$domains && \
      rm -Rf /etc/letsencrypt/renewal/$domains.conf" \

domain_args=""
for domain in "${domains[@]}"; do
  domain_args="$domain_args -d $domain"
done

case "$email" in
  "") email_arg="--register-unsafely-without-email" ;;
  *) email_arg="--email $email" ;;
esac

if [ $staging != "0" ]; then staging_arg="--staging"; fi

echo "> requesting letsencrypt certificate for $domains ..."
docker run --rm \
  -v $certbot_path/conf:/etc/letsencrypt \
  -v $certbot_path/www:/var/www/certbot \
  certbot/certbot \
  certonly --webroot -w /var/www/certbot \
      $staging_arg \
      $email_arg \
      $domain_args \
      --rsa-key-size $rsa_key_size \
      --agree-tos \
      --force-renewal

docker logs nginx
./stop-nginx.sh