#!/bin/bash

RESULT_FILE=$1

if [[ -f ${RESULT_FILE} ]]; then
  rm ${RESULT_FILE}
fi
touch ${RESULT_FILE}

checksum_file() {
  echo $(openssl md5 $1 | awk '{print $2}')
}

FILES=()
while read -r -d ''; do
	FILES+=("$REPLY")
done < <(find . -type f \( -name "build.gradle*" -o -name "settings.gradle*" -o -name "gradle-wrapper.properties" \) -print0)

# Loop through files and append MD5 to result file
for FILE in ${FILES[@]}; do
	echo $(checksum_file ${FILE}) >> ${RESULT_FILE}
done
# Now sort the file so that it is idempotent.
sort ${RESULT_FILE} -o ${RESULT_FILE}