import { createGzip } from "node:zlib";
import { createReadStream, createWriteStream, cpSync, mkdirSync, existsSync, rmSync } from "node:fs";
import { pipeline } from "node:stream/promises";
import { createRequire } from "node:module";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";

const require = createRequire(import.meta.url);
const here = dirname(fileURLToPath(import.meta.url));
const webRoot = join(here, "..");
const dest = join(webRoot, "static", "vendor", "rapidoc");

const pkgRoot = dirname(require.resolve("rapidoc/package.json"));
const source = join(pkgRoot, "dist", "rapidoc-min.js");
if (!existsSync(source)) {
	throw new Error(`rapidoc missing dist/rapidoc-min.js at ${source}`);
}

rmSync(dest, { recursive: true, force: true });
mkdirSync(dest, { recursive: true });

const destJs = join(dest, "rapidoc-min.js");
cpSync(source, destJs);

// Precompress for hooks.server.ts (Accept-Encoding: gzip).
await pipeline(createReadStream(destJs), createGzip({ level: 9 }), createWriteStream(`${destJs}.gz`));

console.log(`Copied rapidoc dist/rapidoc-min.js → ${dest}`);