// 스프레드시트 크기 재기 — vite 로 줄여 묶은 뒤 gzip 크기(바이트). `test_spreadsheet_size.py` 가 부름.
// node spreadsheet_size.mjs <저장소 뿌리>  →  {"engine": {js, css}, "total": {js, css}}
// 앱 번들에 이미 있는 `@ui/ui_template_elements*` 는 빼고 잼(스프레드시트가 새로 더하는 몫만).
import path from "node:path";
import { pathToFileURL } from "node:url";
import { gzipSync } from "node:zlib";

const root = path.resolve(process.argv[2] ?? ".");
const dir = path.join(root, "A00_Common", "spreadsheet");
const { build } = await import(
  pathToFileURL(path.join(root, "config/node_modules/vite/dist/node/index.js")).href
);

const ENGINE = [
  "spreadsheet_address",
  "spreadsheet_parser",
  "spreadsheet_eval",
  "spreadsheet_graph",
  "spreadsheet_refshift",
  "spreadsheet_commands",
  "spreadsheet_history",
  "spreadsheet_recalc",
  "spreadsheet_functions",
  "spreadsheet_numfmt",
  "spreadsheet_fill",
];

async function measure(entries) {
  const out = await build({
    configFile: false,
    logLevel: "silent",
    root,
    resolve: { alias: { "@ui": path.join(root, "ui_template") } },
    build: {
      write: false,
      minify: true,
      target: "es2022",
      cssCodeSplit: false,
      lib: { entry: entries, formats: ["es"] },
      rollupOptions: { external: [/ui_template_elements/] },
    },
  });
  const outputs = (Array.isArray(out) ? out : [out]).flatMap((o) => o.output);
  const size = { js: 0, css: 0 };
  for (const o of outputs) {
    const body = o.type === "chunk" ? o.code : o.source;
    const gz = gzipSync(typeof body === "string" ? body : Buffer.from(body)).length;
    if (o.fileName.endsWith(".css")) size.css += gz;
    else if (o.fileName.endsWith(".js")) size.js += gz;
  }
  return size;
}

const engine = await measure(ENGINE.map((name) => path.join(dir, `${name}.ts`)));
const total = await measure([path.join(dir, "spreadsheet.ts")]);
console.log(JSON.stringify({ engine, total }));