#!/bin/bash

# Copyright 2015 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Set-up the base workspace, currently used as package_path to provide
# the tools directory.

# Create symlinks so we can use tools and examples from the base_workspace.
base_workspace=${WORKSPACE_DIR}/base_workspace
mkdir -p "$base_workspace"
rm -f "${base_workspace}/tools" && ln -s "$(pwd)/tools" "${base_workspace}/tools"
rm -f "${base_workspace}/third_party" && ln -s "$(pwd)/third_party" "${base_workspace}/third_party"
rm -f "${base_workspace}/examples" && ln -s "$(pwd)/examples" "${base_workspace}/examples"
rm -rf "${base_workspace}/src"

# Create a bazelrc file with the base_workspace directory in the package path.
bazelrc='build --package_path %workspace%:'${base_workspace}
bazelrc="${bazelrc}"$'\nfetch --package_path %workspace%:'${base_workspace}
bazelrc="${bazelrc}"$'\nquery --package_path %workspace%:'${base_workspace}
if [ -z "${HOME-}" ]; then
  warning="$INFO No \$HOME variable set, cannot write .bazelrc file."
  warning="$warning Consider adding $base_workspace to your package path"
  display $warning
elif [ ! -f $HOME/.bazelrc ]; then
  display "$INFO Creating a .bazelrc pointing to $base_workspace"
  echo -e "$bazelrc" > $HOME/.bazelrc
else
  while read rcline; do
    if ! grep -q "$rcline" $HOME/.bazelrc; then
      warning="$INFO You already have a .bazelrc. Make sure it contains the "
      warning="$warning following package paths:\n\n$bazelrc\n\n"
      display "$warning"
      break
    fi
  done <<< "$bazelrc"
fi