#!/usr/bin/env bash

# Copyright 2020 The Kubermatic Kubernetes Platform contributors.
#
# 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.

### This README.md generator
###
### That generates README.md with all scripts from this directory described.

set -euo pipefail

if [ -z "${1:-}" ]; then
  $0 hack/
  $0 hack/ci/
  exit 0
fi

cd "$(dirname "$0")/.."
source hack/lib.sh

DIRECTORY="${1:-hack}"
cd "$DIRECTORY"

echodate "Generating README.md for $DIRECTORY ..."

README="README.md"

cat << EOF > "$README"
# Scripts list and their description

This file is generated by running \`hack/meta.sh\`.

EOF

while IFS= read -r -d '' script_file; do
  basename="$(basename "$script_file")"
  help_text=$(awk -F '### ' '/^###/ {print $2}' "$script_file")
  if [[ -z "$help_text" ]]; then
    help_text="TBD"
  fi

  cat << EOF >> "$README"
## ${basename}

${help_text}

EOF
done < <(find . -maxdepth 1 -name '*.sh' -print0 | sort --zero-terminated)
