110 lines
2.8 KiB
JavaScript
110 lines
2.8 KiB
JavaScript
/* eslint-env node, browser */
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const vanity = require('./vanity');
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let count = 0;
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let stop = false;
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let lastTick = null;
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let difficulty = 0;
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const step = 250;
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const elements = {};
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const ids = {
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counter: 'counter',
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speed: 'speed',
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probability: 'probability',
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probabilityBar: 'probability-bar',
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status: 'status',
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genBtn: 'gen',
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stopBtn: 'stop',
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form: 'form'
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};
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const parseInput = () => {
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const input = {
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prefix: document.getElementById('prefix').value,
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checksum: document.getElementById('checksum').checked
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};
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if (!vanity.isValidHex(input.prefix)) {
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elements.form.className = 'error';
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return;
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}
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elements.form.className = '';
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difficulty = vanity.computeDifficulty(input.prefix, input.checksum);
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document.getElementById('difficulty').innerText = difficulty.toString();
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return input;
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};
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const incrementCounter = incr => {
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count += incr;
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elements.counter.innerText = count.toString() + (count === 1 ? ' address' : ' addresses');
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const currentTick = performance.now();
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elements.speed.innerText = Math.floor(1000 * incr / (currentTick - lastTick)) + ' addr/s';
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lastTick = currentTick;
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};
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const updateStats = () => {
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const prob = Math.round(10000 * vanity.computeProbability(difficulty, count)) / 100;
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elements.probability.innerText = prob + '%';
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elements.probabilityBar.style.width = prob + '%';
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};
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const displayResult = result => {
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incrementCounter(result ? result.attempts : 0);
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updateStats();
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document.getElementById('address').innerText = result ? result.address : '';
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document.getElementById('private-key').innerText = result ? result.privKey : '';
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elements.status.innerText = result ? 'Address found' : 'Running';
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};
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const toggleButtons = genBtn => {
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const enabled = genBtn ? elements.genBtn : elements.stopBtn;
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const disabled = genBtn ? elements.stopBtn : elements.genBtn;
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enabled.removeAttribute('disabled');
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disabled.setAttribute('disabled', '');
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};
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const generate = input => {
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const add = vanity.getVanityWallet(input.prefix, input.checksum, step);
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if (add !== null) {
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toggleButtons(true);
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return displayResult(add);
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}
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incrementCounter(step);
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updateStats();
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if (stop) {
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elements.status.innerText = 'Stopped';
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return;
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}
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// Use setTimeout to let the browser render
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setTimeout(() => generate(input), 0);
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};
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for (const e in ids) { // eslint-disable-line guard-for-in
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elements[e] = document.getElementById(ids[e]);
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}
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// Add event listeners on buttons
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elements.genBtn.addEventListener('click', () => {
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incrementCounter(-count);
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displayResult(null);
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stop = false;
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const input = parseInput();
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toggleButtons(false);
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setTimeout(() => generate(input), 0);
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});
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elements.stopBtn.addEventListener('click', () => {
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toggleButtons(true);
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stop = true;
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});
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elements.form.addEventListener('change', () => parseInput());
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elements.form.addEventListener('keyup', () => parseInput());
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