#!/usr/bin/env sh

####################################################################################
#   Run this file from the root of the repository to build and run a PWA container #
####################################################################################
CONFIG_ENV_FILE=./docker/.env.docker.dev
STATUS=0

# accepts -e <envfile_path> to set a separate environment variable file configuration
while getopts ":e" opt; do
  case ${opt} in
    e )
      # validate that the file path passed is valid
      if [ -f $2 ]; then
        CONFIG_ENV_FILE="$2"
        echo "Configuration using environment variables from: $2"
      else
        echo -e "The env file you provided does not exist at this path: $2\nPlease provide the relative path to your environment file.\nExample: $CONFIG_ENV_FILE"
        exit 1
      fi
      ;;
  esac
done

main () {
  env_setup
  create_certificate
  # If cert setup failed then don't start docker
  if [ "$STATUS" = "0" ]; then
    start_docker
  else
    message "An error occurred during setup."
    clean_up_env &     # clean up the environment in the background
    exit 1
  fi
}

env_setup () {
  ENVFILE=./.env
  message "Adding env vars from $CONFIG_ENV_FILE to $ENVFILE for docker setup."
  cp "$CONFIG_ENV_FILE" $ENVFILE
  echo "ENVFILEPATH=$CONFIG_ENV_FILE" >> $ENVFILE
  cat $ENVFILE
  . $ENVFILE
}

create_certificate () {
  message "Creating SSL/TLS certificate"
  # make docker/certs folder if one does not already exist
  [ -d ./docker/certs ] || mkdir ./docker/certs
  # install devcert dependency
  cd ./docker && yarn install --frozen-lockfile && cd -
  node ./docker/makeHostAndCert "$DEV_SERVER_HOST" || STATUS=$?
}

start_docker () {
  message "Building PWA image"
  BUILD_STATUS=0
  docker-compose build || BUILD_STATUS=$?

  clean_up_env &    # clean up the environment in the background

  if [ "$BUILD_STATUS" = "0" ]; then
    message "Starting Docker network and containers"
    docker-compose up
  else
    message "Build failed. See output for details."
  fi
}

clean_up_env () {
  # the docker-compose command needs the .env file to be present in order to run
  # but we want to remove it after execution so it doesn't pollute the dev environment
  # when switching git branches or running the application outside of docker
  if [ -f .env ]; then
    sleep 20
    rm .env
  fi
}

message () {
  echo ""
  echo "==========================================================================="
  echo ""
  echo -e "        " "$1"
  echo ""
  echo "==========================================================================="
  echo ""
}

main