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

# Used to generate program and project configuration. Expects to be able
# to find the protocol buffer generating script in the directory with the
# config file at config/generate.sh and expects to be able to find the
# lucicfg binary on the path from depot_tools.

# Exit if any command fails.
set -e

readonly script_dir="$(dirname "$(realpath -e "${BASH_SOURCE[0]}")")"
source "${script_dir}/common.sh"

output_dir="."
help=""
while [[ $# -gt 0 ]]; do
    case $1 in
        --output-dir|-o)
            output_dir="$2"
            shift
            shift
            ;;
        --help|-h)
            help="yes"
            shift
            ;;
        --*)
            echo "Unknown long option $1" >&2
            shift
            ;;
        *)
            break
            ;;
    esac
done

if [[ -n "${help}" ]]; then
  config_usage
  exit 0
fi

if [[ $# -ne 1 ]]; then
  config_usage
fi

readonly file_path="${1}"
readonly config_dir="$(dirname "$(realpath -e "${file_path}")")"

if [[ -e "${config_dir}"/program/config.star ]]; then
  echo "Making sure program config is fresh..."
  "${script_dir}"/gen_config "${config_dir}"/program/config.star
fi

echo "Building config from source starlark config files."
"${script_dir}"/build_config -o "${output_dir}" "$@"
echo "Transforming generated protojson config enums"
cd "${config_dir}"
"${script_dir}"/transform_config_enums "${output_dir}"
echo "Transforming generated protojson config to build config"
cd "${config_dir}"
"${script_dir}"/transform_config "${output_dir}"