#!/bin/bash
# ============LICENSE_START=======================================================
#  Copyright (C) 2020 The Nordix Foundation. 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.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END=========================================================

set -o errexit
set -o nounset
set -o pipefail

# Turn PROJECTS and PROJECT_DIRECTORIES paramter strings into arrays
# Required in order to loop through them
PROJECTS=(`echo $PROJECTS | sed 's/,/\n/g'`)
PROJECT_DIRECTORIES=(`echo $PROJECT_DIRECTORIES | sed 's/,/\n/g'`)
# Find and store array lenth using one of the arrays
ARRAY_LENGTH=$(echo ${#PROJECTS[@]})
# Take 1 of the array length for the loop
((ARRAY_LENGTH--))

# Iterate over project source repositories and fetch the SHA commit ids
declare -a COMMIT_IDS
for i in $(seq 0 $ARRAY_LENGTH)
do
  echo "----------------------------------------------------"
  echo "INFO: Fetching Build ID of ${PROJECTS[$i]}"
  echo "----------------------------------------------------"
  cd $WORKSPACE/${PROJECT_DIRECTORIES[$i]}
  COMMIT_IDS[$i]=$(echo $(git rev-parse --short HEAD))
done

# Generate a build.properties file in order to share variables among jobs
# Includes SHA commit ids of the source repositories to include in artifact filenames for traceability
echo "-------------------------------------------------------------------------"
echo "INFO: Generating build metadata"
echo "-------------------------------------------------------------------------"
cat << EOF > "$WORKSPACE/build.properties"
BUILD_DATE=$(date '+%Y%m%d%H%M')
BUILT_BY=$BUILD_URL
COMMIT_IDS=$(echo ${COMMIT_IDS[@]} | tr " " -)
EOF

echo "-------------------------------------------------------------------------"
echo "INFO: Creating build metadata file build.properties"
echo "-------------------------------------------------------------------------"
cat "$WORKSPACE/build.properties"
echo "-------------------------------------------------------------------------"