#!/usr/bin/env bash

set -e

trap 'git diff --exit-code' EXIT

script_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)

cd "${script_path}/.." || exit 1

if [ -z "${GML_FORMAT:-}" ] ; then

if ! [ -d Build/lagom/ ] ; then

echo "Directory Build/lagom/ does not exist. Skipping GML formatting."

exit 0

fi

if ! [ -r Build/lagom/bin/gml-format ] ; then

echo "Lagom executable gml-format was not built. Skipping GML formatting."

echo "To enable this check, you may need to run './Meta/serenity.sh build lagom' first."

exit 0

fi

GML_FORMAT="Build/lagom/bin/gml-format"

fi

if [ "$#" -gt "0" ] ; then

# We're in the middle of a pre-commit run, so we should only check the files that have

# actually changed. The reason is that "git ls-files | grep" on the entire repo takes

# about 100ms. That is perfectly fine during a CI run, but becomes noticeable during a

# pre-commit hook. It is unnecessary to check the entire repository on every single

# commit, so we save some time here.

for file in "$@"; do

if [[ "${file}" =~ \.gml ]]; then

echo "$file"

fi

done

else

find AK Base Documentation Kernel Meta Ports Tests Userland -type f -name '*.gml' -print

fi \

| xargs -r "${GML_FORMAT}" -i