#!/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)"

# Must match the pin in script/bootstrap.
NODE_VERSION="22.17.0"

# script/bootstrap installs node and yarn under nvm and leaves neither
# on the PATH of the shell that called it, so resolve the pinned
# toolchain here the way bootstrap's own install step does. nvm is a
# bash script, hence the subshell.
run_yarn() {
    if command -v yarn >/dev/null 2>&1; then
        yarn "$@"
        return
    fi
    if [ ! -s "$HOME/.nvm/nvm.sh" ]; then
        echo "fmt-check: no yarn; run script/bootstrap first" >&2
        exit 1
    fi
    bash -c '. "$HOME/.nvm/nvm.sh" && nvm use "$1" >/dev/null &&
        shift && exec yarn "$@"' bash "$NODE_VERSION" "$@"
}

main() {
    cd "$ROOT"
    # script/bootstrap installs goimports into Go's bin directory, which
    # need not be on PATH.
    gobin="$(go env GOBIN)"
    [ -n "$gobin" ] || gobin="$(go env GOPATH)/bin"
    PATH="$gobin:$PATH"
    files="$(gofmt -s -l .; goimports -l .)"
    if [ -n "$files" ]; then
        echo "files that make fmt would change:" >&2
        echo "$files" | sort -u >&2
        exit 1
    fi
    run_yarn run prettier --check '**/*.md' --tab-width 4 --prose-wrap always
}

main "$@"