#!/bin/bash

TOPLEVEL=$(git rev-parse --show-toplevel)
RES=0

cd $TOPLEVEL

if [ "$1" = "--install" ]; then
    ln -sf ../../tools/pre-commit-hook .git/hooks/pre-commit
    exit
fi

tmpdir=$(mktemp -d precommit.XXXXXX) || exit 1
trap "rm -rf $TOPLEVEL/$tmpdir" 0

git diff --cached --name-only --diff-filter=ACMR |
    xargs git checkout-index --prefix=$tmpdir/ --

cd $tmpdir

echo "=== starting pre-commit checks ==="

echo "Checking the following files:"

find . -type f

echo "=== bashate checks ==="

files=$(egrep -rlI '^#!/(bin/|usr/bin/env )(ba)?sh' .)
[ "$files" ] && (bashate $files || RES=1)

echo "=== yaml checks ==="

${TOPLEVEL}/tools/validate-all-yaml.sh || RES=1

echo "=== dockerfile checks ==="

${TOPLEVEL}/tools/validate-all-dockerfiles.sh || RES=1

exit $RES