#!/bin/bash
# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

fuchsia_dir="${FUCHSIA_DIR}"
if [[ -z "${fuchsia_dir}" ]]; then
  # We walk the parent directories looking for .jiri_root rather than using
  # BASH_SOURCE so that we find the fuchsia_dir enclosing the current working
  # directory instead of the one containing this file in case the user has
  # multiple source trees and is picking up this file from another one.
  fuchsia_dir="$(pwd)"
  while [[ ! -d "${fuchsia_dir}/.jiri_root" ]]; do
    fuchsia_dir="$(dirname "${fuchsia_dir}")"
    if [[ "${fuchsia_dir}" == "/" ]]; then
      echo "Cannot find Platform Source Tree containing $(pwd)"
      exit 1
    fi
  done
fi

build_dir="${fuchsia_dir}/$(<"${fuchsia_dir}"/.fx-build-dir)" || exit $?

if ! [[ -x "${build_dir}/host-tools/ffx" ]]; then
  echo >&2 "ffx is missing! Building ffx!"
  "${fuchsia_dir}/.jiri_root/bin/fx" build ffx || exit $?
fi

exec "${build_dir}"/host-tools/ffx "$@"