#!/bin/sh
set -e

go mod tidy -diff

files=$(git diff --cached --name-only --diff-filter=ACM -- '*.go')
[ -n "$files" ] || exit 0
pkgs=$(echo "$files" | xargs -n1 dirname | sort -u | sed 's|^|./|')

unformatted=$(gofmt -l $files)
if [ -n "$unformatted" ]; then
	echo "gofmt: $unformatted" >&2
	exit 1
fi

# The program is Linux-only (netlink), so everything is checked for Linux.
export GOOS=linux

go vet $pkgs

# Test binaries only run on a Linux host; elsewhere they are compiled, not run.
if [ "$(go env GOHOSTOS)" = linux ]; then
	go test -race $pkgs
else
	go test -exec /usr/bin/true $pkgs
fi

if command -v golangci-lint >/dev/null; then
	golangci-lint run $pkgs
fi