// Copyright 2026 @quantus/crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0

// A near-copy of pack-wasm-base.mjs. Kept separate rather than parameterised
// because that script is upstream's and rebases should not have to reconcile our
// changes with theirs — the duplication is the cheaper of the two costs.
//
// ESM only: no deno variant and no CJS variant, matching what the package ships.
// This must run *after* the TypeScript build, which clears build/.

import fs from 'node:fs';

import { zlibSync } from 'fflate/node';

const PKG_NAME = process.env['PKG_NAME'];
const CRATE_NAME = process.env['CRATE_NAME'];
const DIR_ESM = `./packages/${PKG_NAME}/build`;
const HDR = `// Copyright 2026 @quantus/crypto authors & contributors\n// SPDX-License-Identifier: Apache-2.0\n\n// Generated as part of the build, do not edit\n`;

const data = fs.readFileSync(`./packages/${PKG_NAME}/build-wasm/${CRATE_NAME}_opt.wasm`);
const compressed = Buffer.from(zlibSync(data, { level: 9 }));
const base64 = compressed.toString('base64');

console.log(`*** Compressed WASM: in=${data.length}, out=${compressed.length}, opt=${(100 * compressed.length / data.length).toFixed(2)}%, base64=${base64.length}`);

fs.mkdirSync(DIR_ESM, { recursive: true });

fs.writeFileSync(`${DIR_ESM}/bytes.js`, `${HDR}
export const lenIn = ${compressed.length};

export const lenOut = ${data.length};

export const bytes = '${base64}';
`);