#!/bin/sh

if [ ! -f init-letsencrypt.sh ]; then
    touch init-letsencrypt.sh
fi



cat >| init-letsencrypt.sh  << EOF
#!/bin/bash

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

domains=($custom_domain)
rsa_key_size=4096
data_path="./data/certbot"
email="" # Adding a valid address is strongly recommended
staging=0 # Set to 1 if you're testing your setup to avoid hitting request limits

echo "\$data_path"
if [ -d "\$data_path" ]; then
  read -p "Existing data found for \$domains. Continue and replace existing certificate? [y/N] " decision
  if [ "\$decision" != "Y" ] && [ "\$decision" != "y" ]; then
    exit
  fi
fi


if [ ! -e "\$data_path/conf/options-ssl-nginx.conf" ] || [ ! -e "\$data_path/conf/ssl-dhparams.pem" ]; then
  echo "### Downloading recommended TLS parameters ..."
  mkdir -p "\$data_path/conf"
  curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot-nginx/certbot_nginx/_internal/tls_configs/options-ssl-nginx.conf > "\$data_path/conf/options-ssl-nginx.conf"
  curl -s https://raw.githubusercontent.com/certbot/certbot/master/certbot/certbot/ssl-dhparams.pem > "\$data_path/conf/ssl-dhparams.pem"
  echo
fi

echo "### Creating dummy certificate for \$domains ..."
path="/etc/letsencrypt/live/\$domains"
mkdir -p "\$data_path/conf/live/\$domains"
docker-compose run --rm --entrypoint "\\
  openssl req -x509 -nodes -newkey rsa:1024 -days 1\\
    -keyout '\$path/privkey.pem' \\
    -out '\$path/fullchain.pem' \\
    -subj '/CN=localhost'" certbot
echo


echo "### Starting nginx ..."
docker-compose up --force-recreate -d nginx
echo

echo "### Deleting dummy certificate for \$domains ..."
docker-compose run --rm --entrypoint "\\
  rm -Rf /etc/letsencrypt/live/\$domains && \\
  rm -Rf /etc/letsencrypt/archive/\$domains && \\
  rm -Rf /etc/letsencrypt/renewal/\$domains.conf" certbot
echo


echo "### Requesting Let's Encrypt certificate for \$domains ..."
#Join \$domains to -d args
domain_args=""
for domain in "\${domains[@]}"; do
  domain_args="\$domain_args -d \$domain"
done

# Select appropriate email arg
case "\$email" in
  "") email_arg="--register-unsafely-without-email" ;;
  *) email_arg="--email \$email" ;;
esac

# Enable staging mode if needed
if [ \$staging != "0" ]; then staging_arg="--staging"; fi

docker-compose run --rm --entrypoint "\\
  certbot certonly --webroot -w /var/www/certbot \\
    \$staging_arg \\
    \$email_arg \\
    \$domain_args \\
    --rsa-key-size \$rsa_key_size \\
    --agree-tos \\
    --force-renewal" certbot
echo

echo "### Reloading nginx ..."
docker-compose exec nginx nginx -s reload


EOF