const { execSync } = require("child_process");
const fs = require("fs");
const path = require("path");

const cssDir = path.join(__dirname, "css");
const src = path.join(cssDir, "styles.css");
const dest = path.join(cssDir, "styles.min.css");

if (!fs.existsSync(dest) || fs.statSync(src).mtimeMs > fs.statSync(dest).mtimeMs) {
  console.log("Minifying CSS...");
  execSync(`npx --yes clean-css-cli "${src}" -o "${dest}"`, { stdio: "inherit" });
  const srcSize = fs.statSync(src).size;
  const destSize = fs.statSync(dest).size;
  console.log(`CSS minified: ${srcSize} -> ${destSize} bytes`);
} else {
  console.log("CSS already up to date");
}