#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
APP="$1"; PORT="$2"
WILDCARD_SSL="$DOKKU_ROOT/tls"
SSL="$DOKKU_ROOT/$APP/tls"

if [[ -f "$DOKKU_ROOT/VHOST" ]]; then
  VHOST=$(< "$DOKKU_ROOT/VHOST")
  SUBDOMAIN=${APP/%\.${VHOST}/}
  if [[ "$APP" == *.* ]] && [[ "$SUBDOMAIN" == "$APP" ]]; then
    hostname="${APP/\//-}"
  else
    hostname="${APP/\//-}.$VHOST"
  fi

  if [[ -e "$SSL/server.crt" ]] && [[ -e "$SSL/server.key" ]]; then
    SSL_INUSE="$SSL"
    SSL_DIRECTIVES=$(cat <<EOF
  ssl_certificate     $SSL_INUSE/server.crt;
  ssl_certificate_key $SSL_INUSE/server.key;
EOF
)
  elif  [[ -e "$WILDCARD_SSL/server.crt" ]] && [[ -e "$WILDCARD_SSL/server.key" ]] && [[ $hostname = `openssl x509 -in $WILDCARD_SSL/server.crt -noout -subject | tr '/' '\n' | grep CN= | cut -c4-` ]]; then
    SSL_INUSE="$WILDCARD_SSL"
    SSL_DIRECTIVES=""
  fi

  # ssl based nginx.conf
  if [[ -n "$SSL_INUSE" ]]; then
  cat<<EOF > $DOKKU_ROOT/$APP/nginx.conf
upstream $APP { server 127.0.0.1:$PORT; }
server {
  listen      [::]:80;
  listen      80;
  server_name $hostname;
  return 301 https://\$host\$request_uri;
}

server {
  listen      [::]:443 ssl spdy;
  listen      443 ssl spdy;
  server_name $hostname;
$SSL_DIRECTIVES

  keepalive_timeout   70;
  add_header          Alternate-Protocol  443:npn-spdy/2;

  location    / {
    proxy_pass  http://$APP;
    proxy_http_version 1.1;
    proxy_set_header Upgrade \$http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host \$http_host;
    proxy_set_header X-Forwarded-Proto \$scheme;
    proxy_set_header X-Forwarded-For \$remote_addr;
    proxy_set_header X-Forwarded-Port \$server_port;
    proxy_set_header X-Request-Start \$msec;
  }
}
EOF

  echo "https://$hostname" > "$DOKKU_ROOT/$APP/URL"
else
# default nginx.conf
  cat<<EOF > $DOKKU_ROOT/$APP/nginx.conf
upstream $APP { server 127.0.0.1:$PORT; }
server {
  listen      [::]:80;
  listen      80;
  server_name $hostname;
  location    / {
    proxy_pass  http://$APP;
    proxy_http_version 1.1;
    proxy_set_header Upgrade \$http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host \$http_host;
    proxy_set_header X-Forwarded-Proto \$scheme;
    proxy_set_header X-Forwarded-For \$remote_addr;
    proxy_set_header X-Forwarded-Port \$server_port;
    proxy_set_header X-Request-Start \$msec;
  }
}
EOF

  echo "http://$hostname" > "$DOKKU_ROOT/$APP/URL"
  fi
  echo "-----> Running nginx-pre-reload"
  pluginhook nginx-pre-reload $APP $PORT
  echo "       Reloading nginx"
  sudo /etc/init.d/nginx reload > /dev/null
fi