#!/usr/bin/env bash

# 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.

set -eux

FOUND_ONE_FILE=0
SAW_NON_DOC_CHANGES=0

changed_files=$(git diff --no-commit-id --name-only -r origin/main)

for file in $changed_files; do
    FOUND_ONE_FILE=1
    if ! grep -q "docs/" <<< "$file"; then
        SAW_NON_DOC_CHANGES=1
        break
    fi
done

if [ ${FOUND_ONE_FILE} -eq 0 ] || [ ${SAW_NON_DOC_CHANGES} -eq 1 ]; then
    exit 0
else
    exit 1
fi