# Copyright 2017 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.

#!/bin/bash
# Main script for the docker_autoconfigure rule.
# Loads a container, runs it, copies outputs to tar file.
set -ex

main() {
  export PYTHON_RUNFILES=$(pwd)/../
  trap cleanup_on_finish EXIT # always cleanup
  # Expand a tar file with the repo if needed
  %{EXPAND_REPO_CMD}
  # Call the script produced by the docker_build rule to load the image
  %{LOAD_IMAGE_SH}
  # Run the container image to build the config repos
  docker run -e USER_ID="$(id -u)" -v $(pwd):/bazel-config -i %{IMAGE_NAME}
  # Create a tar file with all the config repos that were built
  tar -cf outputs.tar %{CONFIG_REPOS}
  # Copy the tar file to its desired output location
  cp outputs.tar %{OUTPUT}
}

cleanup_on_finish() {
  # Remove the expanded repo if needed
  %{RM_REPO_CMD}
  # Remove the produced tar file
  rm outputs.tar
}

main $@