// Copies vendor assets that need to ship in `public/` so they can be fetched
// at runtime (wasm, etc). Run via npm pre-hooks — see package.json.
import { copyFile, mkdir, access } from "node:fs/promises";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = join(__dirname, "..");

const copies = [
  {
    from: "node_modules/occt-import-js/dist/occt-import-js.wasm",
    to: "public/vendor/occt-import-js.wasm",
  },
];

async function main() {
  for (const { from, to } of copies) {
    const src = join(ROOT, from);
    const dest = join(ROOT, to);
    try {
      await access(src);
    } catch {
      console.warn(`[copy-viewer-assets] missing: ${from} — did npm install run?`);
      continue;
    }
    await mkdir(dirname(dest), { recursive: true });
    await copyFile(src, dest);
    console.log(`[copy-viewer-assets] ${from} → ${to}`);
  }
}

main().catch((err) => {
  console.error("[copy-viewer-assets] failed:", err);
  process.exit(1);
});