#!/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
        exec yarn "$@"
    fi
    if [ ! -s "$HOME/.nvm/nvm.sh" ]; then
        echo "fmt-check: no yarn; run script/bootstrap first" >&2
        exit 1
    fi
    exec bash -c '. "$HOME/.nvm/nvm.sh" && nvm use "$1" >/dev/null &&
        shift && exec yarn "$@"' bash "$NODE_VERSION" "$@"
}

main() {
    cd "$ROOT"
    # Without the repo's own prettier, yarn runs whatever prettier is on
    # the PATH, which may be a version that formats files differently.
    if [ ! -x node_modules/.bin/prettier ]; then
        echo "fmt-check: this repo's prettier is not installed in" \
            "node_modules/, so run script/bootstrap first." >&2
        exit 1
    fi
    echo "Checking formatting..."
    run_yarn run fmt-check
}

main "$@"
