#!/bin/bash
set -e

module=${1:-@primer/css}
version=${2:-latest}

function log() {
    echo "$@" 1>&2
}

log "Pulling the latest ${module}/build/data.json ..."
curl -sL "https://unpkg.com/${module}@${version}/build/data.json" > before.json

log "Building ${module}/build/data.json locally..."
npm run build
cp build/data.json after.json

function list_selectors() {
    jq -r '.cssstats.selectors.values[]' $1 | sort
}

list_selectors before.json > before.txt
list_selectors after.json > after.txt

diff before.txt after.txt && log "(no diff!)"
rm {before,after}.{json,txt}