#!/bin/bash

source setup.env
source base.setup.env

if ! which envsubst > /dev/null 2>&1
then
  echo "envsubst is needed to run this script"
  if [[ $(uname) == "Darwin" ]]
  then
    echo "you can install it with homebrew (https://brew.sh):"
    echo "brew install gettext"
  else
    if which apt-get > /dev/null 2>&1
    then
      echo "you can install it by running"
      echo "apt-get update && apt-get install gettext-base"
    else
      echo "you can install it by installing the package gettext with your package manager"
    fi
  fi
  exit 1
fi

if [[ "x-$NETBIRD_DOMAIN" == "x-" ]]
then
  echo NETBIRD_DOMAIN is not set, please update your setup.env file
  echo If you are migrating from old versions, you migh need to update your variables prefixes from
  echo WIRETRUSTEE_.. TO NETBIRD_
  exit 1
fi

# local development or tests
if [[ $NETBIRD_DOMAIN == "localhost" || $NETBIRD_DOMAIN == "127.0.0.1" ]]
then
  export NETBIRD_MGMT_API_ENDPOINT=http://$NETBIRD_DOMAIN:$NETBIRD_MGMT_API_PORT
  unset NETBIRD_MGMT_API_CERT_FILE
  unset NETBIRD_MGMT_API_CERT_KEY_FILE
fi

# if not provided, we generate a turn password
if [[ "x-$TURN_PASSWORD" == "x-" ]]
then
  export TURN_PASSWORD=$(openssl rand -base64 32|sed 's/=//g')
fi

MGMT_VOLUMENAME="${VOLUME_PREFIX}${MGMT_VOLUMESUFFIX}"
SIGNAL_VOLUMENAME="${VOLUME_PREFIX}${SIGNAL_VOLUMESUFFIX}"
LETSENCRYPT_VOLUMENAME="${VOLUME_PREFIX}${LETSENCRYPT_VOLUMESUFFIX}"
# if volume with wiretrustee- prefix already exists, use it, else create new with netbird-
OLD_PREFIX='wiretrustee-'
if docker volume ls | grep -q "${OLD_PREFIX}${MGMT_VOLUMESUFFIX}"; then
    MGMT_VOLUMENAME="${OLD_PREFIX}${MGMT_VOLUMESUFFIX}"
fi
if docker volume ls | grep -q "${OLD_PREFIX}${SIGNAL_VOLUMESUFFIX}"; then
    SIGNAL_VOLUMENAME="${OLD_PREFIX}${SIGNAL_VOLUMESUFFIX}"
fi
if docker volume ls | grep -q "${OLD_PREFIX}${LETSENCRYPT_VOLUMESUFFIX}"; then
    LETSENCRYPT_VOLUMENAME="${OLD_PREFIX}${LETSENCRYPT_VOLUMESUFFIX}"
fi

export MGMT_VOLUMENAME
export SIGNAL_VOLUMENAME
export LETSENCRYPT_VOLUMENAME

#backwards compatibility after migrating to generic OIDC
if [[ -z "${NETBIRD_AUTH_AUTHORITY}" ]]; then
    echo "It seems like you provided an old setup.env file."
    echo "Since the release of v0.8.8, we introduced a new set of properties."
    echo "The script is backward compatible and will continue automatically."
    echo "In the future versions it will be deprecated. Please refer to the documentation to learn about the changes http://netbird.io/docs/getting-started/self-hosting"

    export NETBIRD_AUTH_AUTHORITY="https://${NETBIRD_AUTH0_DOMAIN}/"
    export NETBIRD_AUTH_CLIENT_ID=${NETBIRD_AUTH0_CLIENT_ID}
    export NETBIRD_USE_AUTH0="true"
    export NETBIRD_AUTH_SUPPORTED_SCOPES="openid profile email api offline_access email_verified"
    export NETBIRD_AUTH_AUDIENCE=${NETBIRD_AUTH0_AUDIENCE}
    export NETBIRD_AUTH_JWT_CERTS="https://${NETBIRD_AUTH0_DOMAIN}/.well-known/jwks.json"
fi

envsubst < docker-compose.yml.tmpl > docker-compose.yml
envsubst < management.json.tmpl > management.json
envsubst < turnserver.conf.tmpl > turnserver.conf