#!/usr/bin/env bash
set -o nounset; set -o errexit; set -o pipefail; set -o errtrace; set -o functrace

#  Licensed to the Apache Software Foundation (ASF) under one or more
#  contributor license agreements.  See the NOTICE file distributed with
#  this work for additional information regarding copyright ownership.
#  The ASF licenses this file to You 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.


ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )/../.."
POMS=$(find ${ROOT} -name pom.xml)
for pom in ${POMS}; do
    total_count="$(xpath -q -e "count(project/dependencies/dependency)" "${pom}")"
    for i in $(seq 1 1 ${total_count}); do
        xpath -q -e "project/dependencies/dependency[${i}]/*/text()" "${pom}" | \
          sed ':a;N;$!ba;s/\n/:/g'
    done | \
      sort | \
      uniq -d | while read -r dependency; do
        echo "[ERROR] Found duplicate dependency in '$(sed -r "s|${ROOT}/||" <<< ${pom})': ${dependency}"
    done
done