#!/bin/bash
# Copyright 2017 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.

set -e

function usage {
  cat <<END
usage: bootstrap [zircon|garnet|peridot|topaz]

Bootstrap a Fuchsia development environment for the given layer. Defaults to
boostraping at the topaz layer. For more information about the Fuchsia layer
cake, see <https://fuchsia.googlesource.com/docs/+/master/development/source_code/layers.md>.
END
}

if [[ $# -gt 1 ]]; then
  usage
  exit 1
fi

layer=${1:-topaz}

if [[ "${layer}" != "zircon" ]] &&
   [[ "${layer}" != "garnet" ]] &&
   [[ "${layer}" != "peridot" ]] &&
   [[ "${layer}" != "topaz" ]]; then
  usage
  exit 1
fi

# The fetched script will
# - create "fuchsia" directory if it does not exist,
# - download "jiri" command to "fuchsia/.jiri_root/bin"
curl -s "https://fuchsia.googlesource.com/jiri/+/master/scripts/bootstrap_jiri?format=TEXT" | base64 --decode | bash -s fuchsia
cd fuchsia

.jiri_root/bin/jiri import -name="${layer}" "manifest/${layer}" "https://fuchsia.googlesource.com/${layer}"

.jiri_root/bin/jiri update

echo "Done creating ${layer} development environment at \"$(pwd)\"."
echo "Recommended: export PATH=\"$(pwd)/.jiri_root/bin:\$PATH\""