import { performance } from 'node:perf_hooks';

import hash from '../lib/utils/hash.mjs';

function benchmark(fn, input, iterations) {
	// Warm-up
	for (let i = 0; i < 1000; i++) {
		fn(input);
	}

	const start = performance.now();
	for (let i = 0; i < iterations; i++) {
		fn(input);
	}
	const end = performance.now();

	return {
		timeInMs: end - start,
		opsPerSecond: Math.round(iterations / ((end - start) / 1000)),
	};
}

const input = process.env['INPUT'];

if (!input) throw new Error('INPUT is required');

const iterations = process.env['ITERATIONS'];

if (!iterations) throw new Error('ITERATIONS is required');

const { timeInMs, opsPerSecond } = benchmark(hash, input, iterations);

console.log('Time: %d ms', timeInMs);
console.log('Ops: %d / s', opsPerSecond);