/**
 * The shell has to reach QuickJS as source text. Emitted as a `.ts` module, not
 * a `.js` asset, so Vite and plain Node get at it the same way. Committed, like
 * the wasm packages, so a checkout builds without this having run.
 */

import { build } from "esbuild";
import { mkdirSync, writeFileSync } from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const here = dirname(fileURLToPath(import.meta.url));
const outDir = join(here, "src", "generated");

const result = await build({
  entryPoints: [join(here, "src", "guest", "index.ts")],
  bundle: true,
  write: false,
  format: "iife",
  platform: "browser",
  target: "es2022",
  minify: false,
  legalComments: "none",
});

const source = result.outputFiles[0].text;

mkdirSync(outDir, { recursive: true });
writeFileSync(
  join(outDir, "guest.ts"),
  [
    "// Generated by build-guest.mjs. Do not edit.",
    "//",
    "// The runtime shell, as source text, for evaluation inside QuickJS.",
    "// Regenerate with `npm run build --workspace @yaakapp-internal/plugin-sandbox`.",
    "",
    `export const GUEST_SOURCE = ${JSON.stringify(source)};`,
    "",
  ].join("\n"),
);

console.log(`Bundled guest shell: ${(source.length / 1024).toFixed(1)} KB`);