#!/bin/sh
# script/fmt-check: check formatting (read-only). Same scope as
# script/fmt, but fails instead of writing.
set -eu

ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"

# Regenerate mfer/mf.pb.go from mfer/mf.proto if it is missing or stale
# (mirrors the old Makefile prerequisite; the generated file is
# committed, so this is normally a no-op).
ensure_pb() {
    if [ ! -f mfer/mf.pb.go ] ||
        [ -n "$(find mfer/mf.proto -newer mfer/mf.pb.go 2>/dev/null)" ]; then
        (cd mfer && go generate .)
    fi
}

main() {
    cd "$ROOT"
    ensure_pb
    if [ -n "$(gofmt -l .)" ]; then
        echo "gofmt: files need formatting:" >&2
        gofmt -l . >&2
        exit 1
    fi
}

main "$@"