// Copyright 2019-2025 @pezkuwi/wasm-crypto authors & contributors
// SPDX-License-Identifier: Apache-2.0

import { zlibSync } from 'fflate/node';
import fs from 'node:fs';

import { formatNumber } from '@pezkuwi/util';

const PKG_NAME = process.env['PKG_NAME'];
const DIR_DENO = `./${PKG_NAME}-wasm/build-deno/deno`;
const DIR_CJS = `./${PKG_NAME}-wasm/build/cjs`;
const HDR = `// Copyright 2019-${new Date().getFullYear()} @polkadot/${PKG_NAME}-wasm 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(`./${PKG_NAME}/build-wasm/wasm_opt.wasm`);
const compressed = Buffer.from(zlibSync(data, { level: 9 }));
const base64 = compressed.toString('base64');

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

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

fs.writeFileSync(`${DIR_CJS}/bytes.js`, `${HDR}
exports.lenIn = ${compressed.length};

exports.lenOut = ${data.length};

exports.bytes = '${base64}';
`);

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

export const lenOut = ${data.length};

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