#!/usr/bin/env sh
set -eu

confd='/etc/opt/simplex-xftp'

# Check if server has been initialized
if [ ! -f "${confd}/file-server.ini" ]; then
  # If not, determine ip or domain
  case "${ADDR}" in
    '')
      printf 'Please specify $ADDR environment variable.\n'
      exit 1
      ;;

    # Determine domain or IPv6
    *[a-zA-Z]*)
      case "${ADDR}" in
        # IPv6
        *:*)
          set -- --ip "${ADDR}"
          ;;

        # Domain
        *)
          case "${ADDR}" in
            # Check if format is correct
            *.*)
              set -- --fqdn "${ADDR}"
              ;;

            # Incorrect domain
            *)
              printf 'Incorrect $ADDR environment variable. Please specify the correct one in format: smp1.example.org / example.org \n'
              exit 1
              ;;
          esac
          ;;
      esac
      ;;

    # Assume everything else is IPv4
    *)
      set -- --ip "${ADDR}"
      ;;
  esac

  # Set global disk quota
  case "${QUOTA}" in
    '')
      printf 'Please specify $QUOTA environment variable.\n'
      exit 1
      ;;

    # Incorrect format in uppercase, but automagically workaround this, replacing characters to lowercase
    *GB)
      QUOTA="$(printf '%s' "${QUOTA}" | tr '[:upper:]' '[:lower:]')"
      set -- "$@" --quota "${QUOTA}"
      ;;

    # Correct format  
    *gb)
      set -- "$@" --quota "${QUOTA}"
      ;;

    # Incorrect format
    *)
      printf 'Wrong format. Format should be: 1gb, 10gb, 100gb.\n'
      exit 1
      ;;
  esac

  # Init the certificates and configs
  xftp-server init --store-log \
                   --path /srv/xftp \
                   "$@" > /dev/null 2>&1

  # Optionally, set password
  if [ -n "${PASS}" ]; then
    sed -i -e "/^# create_password:/a create_password: $PASS" \
           "${confd}/file-server.ini"
  fi
fi

# Backup store log just in case

DOCKER=true /usr/local/bin/simplex-servers-stopscript xftp-server

# Finally, run xftp-sever. Notice that "exec" here is important:
# smp-server replaces our helper script, so that it can catch INT signal
exec xftp-server start +RTS -N -RTS