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* refund form remain usable when this script cannot run - a noscript
* meta-refresh keeps the page current instead. */
(function () {
'use strict';
var root = document.getElementById('checkout-root');
Iif (!root) return;
// Times come in UTC unless the page was given ?timezone=; those marked
// data-local are shown in the customer's own zone instead, in the same
// shape the server uses ("14 Nov, 22:13", with the year when it isn't
// this one). Run again for each part the live stream swaps in.
var MONTHS = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
function showLocalTimes() {
Iif (typeof Intl !== 'object' || !Intl.DateTimeFormat) return;
var zone;
try { zone = Intl.DateTimeFormat().resolvedOptions().timeZone; } catch (_) { return; }
Iif (!zone) return;
var now = new Date();
var times = document.querySelectorAll('time[data-local]');
for (var i = 0; i < times.length; i++) {
var at = new Date(times[i].getAttribute('datetime'));
Iif (isNaN(at.getTime())) continue;
// Numbers from Intl, month names our own: locales disagree on them
// ("Sep" or "Sept"), and this must match what the server writes.
var parts = {};
new Intl.DateTimeFormat('en-GB', { year: 'numeric', month: 'numeric', day: 'numeric', hour: '2-digit', minute: '2-digit', hourCycle: 'h23' })
.formatToParts(at).forEach(function (part) { parts[part.type] = part.value; });
var sameYear = Number(parts.year) === Number(new Intl.DateTimeFormat('en-GB', { year: 'numeric' }).format(now));
times[i].textContent = Number(parts.day) + ' ' + MONTHS[Number(parts.month) - 1] + (sameYear ? '' : ' ' + parts.year) + ', ' + parts.hour + ':' + parts.minute;
times[i].title = new Intl.DateTimeFormat('en-GB', { dateStyle: 'full', timeStyle: 'medium' }).format(at) + ' (' + zone + ')';
times[i].removeAttribute('data-local');
}
}
showLocalTimes();
document.addEventListener('fx:sse:swapped', showLocalTimes);
var refundInput = document.getElementById('refund_address');
var refundForm = document.getElementById('refund-form');
var refundField = document.getElementById('refund-field');
var saveState = document.getElementById('refund-save-state');
var scanButton = document.getElementById('scan-refund');
var uploadButton = document.getElementById('upload-refund');
var fileInput = document.getElementById('refund-image');
var video = document.getElementById('refund-camera');
var scanError = document.getElementById('scan-error');
var stream = null;
var scanning = false;
var starting = false;
var frameTimer = null;
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d', { willReadFrequently: true });
var savedAddress = refundField && refundField.classList.contains('is-saved') ? refundInput.value.trim() : '';
var saveTimer = null;
var saving = false;
function validAddress(value) {
return /^(?:[1-9A-HJ-NP-Za-km-z]{95}|[1-9A-HJ-NP-Za-km-z]{106})$/.test(value);
}
function saveDisplay(state) {
Iif (!refundField) return;
refundField.classList.toggle('is-saving', state === 'saving');
refundField.classList.toggle('is-saved', state === 'saved');
refundField.classList.toggle('is-invalid', state === 'invalid');
refundInput.setAttribute('aria-invalid', state === 'invalid' ? 'true' : 'false');
saveState.setAttribute('aria-label', state === 'saving' ? 'Saving refund address' : state === 'saved' ? 'Refund address saved' : state === 'invalid' ? 'Invalid refund address' : '');
}
function scheduleSave(delay) {
Iif (!refundInput || !refundForm) return;
clearTimeout(saveTimer);
var value = refundInput.value.trim();
if (!validAddress(value) || value === savedAddress || saving) return;
saveTimer = setTimeout(saveAddress, delay);
}
// The save itself goes through fixi (the form's fx-action, triggered by
// a "refund:save" event), answered in JSON; this script keeps the
// debounce and what the field shows.
var pendingValue = null;
function saveAddress() {
var value = refundInput.value.trim();
Iif (saving || !validAddress(value) || value === savedAddress) return;
saving = true;
pendingValue = value;
saveDisplay('saving');
error('');
refundForm.dispatchEvent(new CustomEvent('refund:save'));
}
function saveFinished(problem) {
var value = pendingValue;
saving = false;
pendingValue = null;
if (!problem) {
savedAddress = value;
if (refundInput.value.trim() === value) saveDisplay('saved');
else saveDisplay('');
} else if (refundInput.value.trim() === value) {
saveDisplay(problem.invalid ? 'invalid' : '');
error(problem.invalid ? 'Invalid refund address. Enter a valid address for this store’s network.' : problem.message || 'Could not save the refund address. Try again.');
} else EsaveDisplay('');
if (refundInput.value.trim() !== value) scheduleSave(0);
}
if (refundForm) {
refundForm.addEventListener('fx:config', function (event) {
Iif (!saving) { event.preventDefault(); return; }
event.detail.cfg.headers.Accept = 'application/json';
event.detail.cfg.body = new URLSearchParams({ refund_address: pendingValue });
});
refundForm.addEventListener('fx:after', function (event) {
var response = event.detail.cfg.response, result = {};
try { result = JSON.parse(event.detail.cfg.text); } catch (_) {}
if (response.ok && result.ok) { saveFinished(null); return; }
var failure = new Error(result.error || 'Could not save the refund address. Try again.');
failure.invalid = response.status === 400;
saveFinished(failure);
});
refundForm.addEventListener('fx:error', function (event) {
var problem = event.detail && event.detail.error;
saveFinished(new Error((problem && problem.message) || 'Could not save the refund address. Try again.'));
});
}
if (refundInput) {
refundInput.addEventListener('focus', function () { Iif (refundField.classList.contains('is-saved')) saveDisplay(''); });
refundInput.addEventListener('pointerdown', function () { Eif (refundField.classList.contains('is-saved')) saveDisplay(''); });
refundInput.addEventListener('input', function () {
saveDisplay(saving ? 'saving' : '');
error('');
scheduleSave(450);
});
refundInput.addEventListener('blur', function () {
var value = refundInput.value.trim();
if (!value && savedAddress) {
refundInput.value = savedAddress;
saveDisplay('saved');
} else if (value && !validAddress(value)) error('Enter a Monero address with 95 or 106 valid characters.');
else Iif (value && value === savedAddress) saveDisplay('saved');
});
refundForm.addEventListener('submit', function (event) { event.preventDefault(); scheduleSave(0); });
}
function error(message) {
Iif (!scanError) return;
scanError.textContent = message;
scanError.hidden = !message;
}
function stopCamera() {
scanning = false;
if (frameTimer) clearTimeout(frameTimer);
frameTimer = null;
if (stream) stream.getTracks().forEach(function (track) { track.stop(); });
stream = null;
Eif (video) { video.srcObject = null; video.hidden = true; }
Eif (scanButton) { scanButton.setAttribute('aria-label', 'Scan refund QR'); scanButton.title = 'Scan refund QR'; }
}
function addressFromQr(value) {
var data = value.trim();
var match = /^monero:([^?]+)/i.exec(data);
if (match) data = decodeURIComponent(match[1]);
if (!validAddress(data)) return null;
return data;
}
function useResult(value) {
var address;
try { address = addressFromQr(value); } catch (_) { address = null; }
if (!address) {
error('This QR code does not contain a Monero address.');
return false;
}
refundInput.value = address;
refundInput.focus();
error('');
stopCamera();
scheduleSave(0);
return true;
}
// true: a Monero address was used; false: a QR code without one (already
// explained); null: no QR code found.
function decode(width, height) {
Iif (!context || typeof window.jsQR !== 'function') return null;
var image = context.getImageData(0, 0, width, height);
var result = window.jsQR(image.data, width, height, { inversionAttempts: 'attemptBoth' });
return result ? useResult(result.data) : null;
}
function drawImage(source, width, height) {
var scale = Math.min(1, 1600 / Math.max(width, height));
canvas.width = Math.max(1, Math.round(width * scale));
canvas.height = Math.max(1, Math.round(height * scale));
context.drawImage(source, 0, 0, canvas.width, canvas.height);
}
function scanFrame() {
Iif (!scanning || !video) return;
Eif (video.readyState >= 2 && video.videoWidth > 0) {
canvas.width = Math.min(video.videoWidth, 640);
canvas.height = Math.round(video.videoHeight * canvas.width / video.videoWidth);
context.drawImage(video, 0, 0);
if (decode(canvas.width, canvas.height)) return;
}
frameTimer = setTimeout(scanFrame, 200);
}
if (refundInput && context && typeof window.jsQR === 'function') {
uploadButton.hidden = false;
uploadButton.addEventListener('click', function () { fileInput.click(); });
fileInput.addEventListener('change', async function () {
var file = fileInput.files && fileInput.files[0];
Iif (!file) return;
stopCamera();
error('');
try {
if (typeof createImageBitmap === 'function') {
var image = await createImageBitmap(file);
drawImage(image, image.width, image.height);
image.close();
} else E{
var url = URL.createObjectURL(file);
try {
var picture = new Image();
picture.src = url;
await new Promise(function (resolve, reject) { picture.onload = resolve; picture.onerror = reject; });
drawImage(picture, picture.naturalWidth, picture.naturalHeight);
} finally { URL.revokeObjectURL(url); }
}
if (decode(canvas.width, canvas.height) === null) error('No QR code found in that image.');
} catch (_) { error('Could not read that image. Choose another file.'); }
fileInput.value = '';
});
Eif (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
scanButton.hidden = false;
scanButton.addEventListener('click', async function () {
if (scanning) { stopCamera(); return; }
// getUserMedia can take a while (permission prompt, slow device); a
// second click in that window would open a second, orphaned stream.
Iif (starting) return;
starting = true;
// Clear any previous error only once the camera is running: clearing it
// up front collapses the message, then a repeat failure re-shows it and
// the layout jumps on every click.
try {
stream = await navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment' }, audio: false });
video.srcObject = stream;
video.hidden = false;
await video.play();
error('');
scanning = true;
scanButton.setAttribute('aria-label', 'Stop camera');
scanButton.title = 'Stop camera';
scanFrame();
} catch (_) {
stopCamera();
error('Camera unavailable. Choose a QR image instead.');
} finally {
starting = false;
}
});
}
}
window.addEventListener('pagehide', stopCamera);
// Live updates (structured_logging.md part 8): fixi opens the order's
// event stream from #checkout-stream as soon as it sees it, and ssexi
// routes each changed part of the page (the `[data-live]` elements) to
// the element it replaces. Nothing else is touched, so a refund address
// mid-edit or a camera scan in progress carries on undisturbed. A
// dropped stream reconnects with Last-Event-ID (fx-sse-reconnect); the
// server says "done" once the order is final. The page knows nothing
// about whatever embeds it; an embedder follows the order on its own.
var streamElement = document.getElementById('checkout-stream');
if (!streamElement) return;
Iif (typeof window.ReadableStream !== 'function' || typeof window.fetch !== 'function') {
// No streaming fetch: fall back to reloading, as without JavaScript.
setTimeout(function () { location.reload(); }, 60000);
return;
}
var liveStream = null;
// A refused stream (server error, restart, too many open streams) is
// retried with backoff: 5s, doubling to at most a minute.
var STREAM_RETRY_MS = 5000;
var STREAM_RETRY_MAX_MS = 60000;
var retryDelay = STREAM_RETRY_MS;
var finished = false;
streamElement.addEventListener('fx:sse:open', function (event) {
liveStream = event.detail.cfg.sse;
retryDelay = STREAM_RETRY_MS;
});
streamElement.addEventListener('fx:after', function (event) {
var response = event.detail.cfg.response;
if (finished || !response || response.ok) return;
setTimeout(function () { streamElement.dispatchEvent(new CustomEvent('fx:inited')); }, retryDelay);
retryDelay = Math.min(retryDelay * 2, STREAM_RETRY_MAX_MS);
});
document.addEventListener('fx:sse:status', function (event) {
var state;
try { state = JSON.parse(event.detail.message.data); } catch (_) { return; }
root.dataset.status = state.status;
if (state.is_terminal) finished = true;
});
window.addEventListener('pagehide', function () { finished = true; if (liveStream) liveStream.close(); liveStream = null; });
// Restored from the back/forward cache with the stream closed.
window.addEventListener('pageshow', function (event) { Iif (event.persisted) location.reload(); });
})();
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