visibility${formatCount(meme.viewCount)}
download${formatCount(meme.downloadCount)}
`;
if (options.append && index === 0) article.tabIndex = -1;
return article;
});
if (options.append) {
grid.append(...cards);
} else {
unobserveViewedImages();
grid.replaceChildren(...cards);
}
observeViewedImages(cards);
}
async function openSharedContentFromUrl() {
if (window.location.pathname === '/lore' || window.location.pathname === '/lore/') {
await openLoreDialog();
return;
}
const match = window.location.pathname.match(/^\/meme\/([a-f0-9]{64})\/?$/);
if (!match) return;
try {
const response = await fetch(`/api/memes/${match[1]}`);
const payload = await response.json();
if (!response.ok) throw new Error(payload.error || 'Meme not found.');
await openLightbox({
...payload.meme,
alt: `Shared meme ${shortId(payload.meme.id)}`
});
} catch {
window.location.replace('/');
}
}
async function openLightbox({ id, url, downloadUrl, alt, viewCount = 0, downloadCount = 0 }) {
lightboxImage.src = url;
lightboxImage.alt = alt;
lightboxCopy.dataset.imageUrl = url;
lightboxDownload.href = downloadUrl;
lightboxShare.dataset.shareId = id;
lightboxViewCount.dataset.counterId = id;
lightboxViewCount.dataset.counterKind = 'view';
lightboxViewCount.querySelector('[data-count]').textContent = formatCount(viewCount);
lightboxDownloadCount.dataset.counterId = id;
lightboxDownloadCount.dataset.counterKind = 'download';
lightboxDownloadCount.querySelector('[data-count]').textContent = formatCount(downloadCount);
lightboxId.textContent = `ID: 0x${id.toUpperCase()}`;
setActionStatus('', lightboxCopy);
if (!lightbox.open) lightbox.showModal();
await recordViewOnce(id);
}
async function openMemeShareDialog(id, triggerButton = null) {
if (!isMemeId(id)) return;
return openShareDialog({
path: `/meme/${id}`,
title: 'SHARE_MEME',
label: 'MEME_LINK',
triggerButton
});
}
async function openShareDialog({ path, title, label, triggerButton = null }) {
activeShareTrigger = triggerButton;
shareTitle.textContent = title;
shareLinkLabel.textContent = label;
shareLink.value = new URL(path, window.location.origin).href;
window.clearTimeout(shareStatusTimer);
shareStatusTimer = null;
shareStatus.textContent = '';
resetCopiedFeedback(copyShareLinkButton);
if (!shareModal.open) shareModal.showModal();
}
async function copyActiveShareLink() {
if (!shareLink.value) return;
copyShareLinkButton.disabled = true;
try {
await copyText(shareLink.value);
shareStatus.textContent = 'LINK_COPIED_TO_CLIPBOARD';
showCopiedFeedback(copyShareLinkButton, 'Share link copied');
if (activeShareTrigger) showCopiedFeedback(activeShareTrigger, 'Share link copied');
window.clearTimeout(shareStatusTimer);
shareStatusTimer = window.setTimeout(() => {
shareStatus.textContent = '';
shareStatusTimer = null;
}, 2600);
} catch {
shareLink.focus();
shareLink.select();
shareStatus.textContent = 'COPY_UNAVAILABLE — SELECT_AND_COPY_THE_LINK';
} finally {
copyShareLinkButton.disabled = false;
}
}
async function openLoreDialog() {
setActionStatus('', loreCopy);
if (!loreModal.open) loreModal.showModal();
if (loreContent) return;
try {
const response = await fetch('/assets/meme-protocol-lore.txt');
if (!response.ok) throw new Error('Lore unavailable.');
loreContent = await response.text();
loreText.textContent = loreContent;
} catch {
loreText.textContent = 'LORE_TRANSMISSION_UNAVAILABLE';
setActionStatus('LORE_TRANSMISSION_UNAVAILABLE', loreCopy);
}
}
async function copyLore() {
if (!loreContent) await openLoreDialog();
if (!loreContent) return;
loreCopy.disabled = true;
try {
await copyText(loreContent);
showCopiedFeedback(loreCopy, 'Lore copied');
setActionStatus('LORE_COPIED_TO_CLIPBOARD', loreCopy);
} catch {
setActionStatus('LORE_COPY_UNAVAILABLE — USE_DOWNLOAD', loreCopy);
} finally {
loreCopy.disabled = false;
}
}
async function copyImage(url, button) {
if (!url || !button) return;
button.disabled = true;
setActionStatus('', button);
try {
if (!navigator.clipboard?.write || typeof ClipboardItem === 'undefined') {
throw new Error('Image clipboard unavailable.');
}
const png = fetch(url)
.then((response) => {
if (!response.ok) throw new Error('Image fetch failed.');
return response.blob();
})
.then(convertImageBlobToPng);
await navigator.clipboard.write([new ClipboardItem({ 'image/png': png })]);
showCopiedFeedback(button, 'Meme image copied');
setActionStatus('MEME_IMAGE_COPIED_TO_CLIPBOARD', button);
} catch {
setActionStatus('IMAGE_COPY_UNAVAILABLE — USE_DOWNLOAD', button);
} finally {
button.disabled = false;
}
}
async function convertImageBlobToPng(blob) {
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
if (!context) throw new Error('Canvas unavailable.');
let image;
let cleanup = () => {};
if ('createImageBitmap' in window) {
image = await createImageBitmap(blob);
cleanup = () => image.close();
} else {
const objectUrl = URL.createObjectURL(blob);
image = await loadImage(objectUrl);
cleanup = () => URL.revokeObjectURL(objectUrl);
}
try {
canvas.width = image.width;
canvas.height = image.height;
context.drawImage(image, 0, 0);
return await new Promise((resolve, reject) => {
canvas.toBlob((png) => {
if (png) resolve(png);
else reject(new Error('PNG conversion failed.'));
}, 'image/png');
});
} finally {
cleanup();
}
}
function loadImage(url) {
return new Promise((resolve, reject) => {
const image = new Image();
image.onload = () => resolve(image);
image.onerror = () => reject(new Error('Image decode failed.'));
image.src = url;
});
}
function showCopiedFeedback(button, copiedLabel = 'Copied') {
const icon = button.querySelector('.material-symbols-outlined');
const label = button.querySelector('[data-copy-label]');
if (!icon) return;
button.dataset.defaultIcon ||= icon.textContent.trim();
if (label) button.dataset.defaultLabel ||= label.textContent.trim();
button.dataset.defaultAriaLabel ||= button.getAttribute('aria-label') || '';
button.dataset.defaultTitle ||= button.getAttribute('title') || '';
icon.textContent = 'check';
if (label) label.textContent = 'COPIED';
if (button.dataset.defaultAriaLabel) button.setAttribute('aria-label', copiedLabel);
if (button.dataset.defaultTitle) button.setAttribute('title', copiedLabel);
button.classList.add('is-copied');
window.clearTimeout(copiedFeedbackTimers.get(button));
copiedFeedbackTimers.set(button, window.setTimeout(() => {
resetCopiedFeedback(button);
}, 2600));
}
function resetCopiedFeedback(button) {
const icon = button.querySelector('.material-symbols-outlined');
const label = button.querySelector('[data-copy-label]');
window.clearTimeout(copiedFeedbackTimers.get(button));
copiedFeedbackTimers.delete(button);
if (icon && button.dataset.defaultIcon) icon.textContent = button.dataset.defaultIcon;
if (label && button.dataset.defaultLabel) label.textContent = button.dataset.defaultLabel;
if (button.dataset.defaultAriaLabel) button.setAttribute('aria-label', button.dataset.defaultAriaLabel);
if (button.dataset.defaultTitle) button.setAttribute('title', button.dataset.defaultTitle);
button.classList.remove('is-copied');
}
async function copyText(value) {
if (navigator.clipboard?.writeText) {
await navigator.clipboard.writeText(value);
return;
}
const fallback = document.createElement('textarea');
fallback.value = value;
fallback.setAttribute('readonly', '');
fallback.className = 'clipboard-fallback';
document.body.append(fallback);
fallback.select();
const copied = document.execCommand('copy');
fallback.remove();
if (!copied) throw new Error('Clipboard unavailable.');
}
function setActionStatus(message, triggerButton = null) {
window.clearTimeout(actionStatusTimer);
for (const status of document.querySelectorAll('[data-action-status], #action-status')) {
status.textContent = '';
}
const target = triggerButton?.closest('dialog')?.querySelector('[data-action-status]') || actionStatus;
target.textContent = message;
if (!message) return;
actionStatusTimer = window.setTimeout(() => {
target.textContent = '';
actionStatusTimer = null;
}, 3200);
}
async function validateClientFile(file) {
if (!file) return 'SELECT A FILE.';
if (!SAFE_TYPES.has(file.type)) return 'ONLY PNG AND JPEG ARE ACCEPTED.';
if (file.size > MAX_FILE_BYTES) return 'IMAGE EXCEEDS 5MB.';
try {
const dimensions = await readImageDimensions(file);
if (dimensions.width > 6000 || dimensions.height > 6000) return 'IMAGE EDGE EXCEEDS 6000PX.';
if (dimensions.width * dimensions.height > MAX_IMAGE_PIXELS) return 'IMAGE EXCEEDS 20MP.';
} catch {
return 'IMAGE COULD NOT BE INSPECTED.';
}
return '';
}
function readImageDimensions(file) {
return new Promise((resolve, reject) => {
const image = new Image();
const url = URL.createObjectURL(file);
image.onload = () => {
URL.revokeObjectURL(url);
resolve({ width: image.naturalWidth, height: image.naturalHeight });
};
image.onerror = () => {
URL.revokeObjectURL(url);
reject(new Error('invalid image'));
};
image.src = url;
});
}
function closeUpload() {
uploadForm.reset();
fileLabel.textContent = 'SELECT PNG / JPEG';
formStatus.textContent = '';
uploadModal.close();
}
function handleViewIntersections(entries) {
for (const entry of entries) {
const id = entry.target.dataset.viewObserveId;
if (!id || wasRecentlyViewed(id)) {
stopViewTimer(id);
if (wasRecentlyViewed(id)) viewObserver.unobserve(entry.target);
continue;
}
if (entry.isIntersecting && entry.intersectionRatio >= VIEW_THRESHOLD) {
startViewTimer(id, entry.target);
} else {
stopViewTimer(id);
}
}
}
function observeViewedImages(cards) {
if (!viewObserver) return;
for (const card of cards) {
const image = card.querySelector('[data-view-observe-id]');
if (image && !wasRecentlyViewed(image.dataset.viewObserveId)) viewObserver.observe(image);
}
}
function unobserveViewedImages() {
for (const timer of pendingViewTimers.values()) window.clearTimeout(timer);
pendingViewTimers.clear();
if (!viewObserver) return;
for (const image of grid.querySelectorAll('[data-view-observe-id]')) {
viewObserver.unobserve(image);
}
}
function startViewTimer(id, target) {
if (pendingViewTimers.has(id)) return;
const timer = window.setTimeout(async () => {
pendingViewTimers.delete(id);
if (wasRecentlyViewed(id)) {
viewObserver.unobserve(target);
return;
}
await recordViewOnce(id);
viewObserver.unobserve(target);
}, VIEW_DWELL_MS);
pendingViewTimers.set(id, timer);
}
function stopViewTimer(id) {
const timer = pendingViewTimers.get(id);
if (!timer) return;
window.clearTimeout(timer);
pendingViewTimers.delete(id);
}
async function recordViewOnce(id) {
if (!isMemeId(id)) return;
if (wasRecentlyViewed(id)) return;
rememberViewed(id);
try {
const response = await fetch(`/api/memes/${id}/view`, { method: 'POST' });
const payload = await response.json();
if (!response.ok) throw new Error(payload.error || 'View update failed.');
updateCounters(payload.meme);
} catch {
forgetViewed(id);
// Live counter updates are best-effort; the stream and lightbox should still work.
}
}
function isMemeId(id) {
return typeof id === 'string' && /^[a-f0-9]{64}$/.test(id);
}
function wasRecentlyViewed(id) {
if (viewedThisSession.has(id)) return true;
try {
const viewedAt = Number.parseInt(localStorage.getItem(`${VIEW_DEDUPE_PREFIX}${id}`) || '0', 10);
if (Number.isFinite(viewedAt) && Date.now() - viewedAt < VIEW_DEDUPE_MS) return true;
} catch {
// Storage can be unavailable in hardened browser modes; session memory still dedupes.
}
return false;
}
function rememberViewed(id) {
viewedThisSession.add(id);
try {
localStorage.setItem(`${VIEW_DEDUPE_PREFIX}${id}`, String(Date.now()));
} catch {
// localStorage is optional; no upload or view flow depends on it.
}
}
function forgetViewed(id) {
viewedThisSession.delete(id);
try {
localStorage.removeItem(`${VIEW_DEDUPE_PREFIX}${id}`);
} catch {
// Optional storage cleanup.
}
}
function connectLiveCounters() {
if (!('EventSource' in window)) return;
const source = new EventSource('/api/events');
source.addEventListener('metric', (event) => {
updateCounters(JSON.parse(event.data));
});
}
function updateCounters(meme) {
for (const element of document.querySelectorAll(`[data-counter-id="${meme.id}"]`)) {
const count = element.querySelector('[data-count]');
if (!count) continue;
if (element.dataset.counterKind === 'view') {
count.textContent = formatCount(meme.viewCount);
}
if (element.dataset.counterKind === 'download') {
count.textContent = formatCount(meme.downloadCount);
}
}
for (const button of document.querySelectorAll(`[data-view-id="${meme.id}"]`)) {
button.dataset.viewCount = String(meme.viewCount);
button.dataset.downloadCount = String(meme.downloadCount);
}
}
function setLoader(label, spinning) {
feedLoaderLabel.textContent = label;
feedLoader.classList.toggle('is-spinning', spinning);
}
function shortId(id) {
return `0x${id.slice(0, 4).toUpperCase()}...${id.slice(-4).toUpperCase()}`;
}
function relativeAge(value) {
const elapsed = Math.max(1, Date.now() - new Date(value).getTime());
const minutes = Math.floor(elapsed / 60000);
if (minutes < 60) return `${minutes}M AGO`;
const hours = Math.floor(minutes / 60);
if (hours < 24) return `${hours}H AGO`;
return `${Math.floor(hours / 24)}D AGO`;
}
function formatCount(value) {
const count = Number.isFinite(value) ? value : 0;
if (count >= 1_000_000) return `${(count / 1_000_000).toFixed(1)}M`;
if (count >= 1_000) return `${(count / 1_000).toFixed(1)}K`;
return String(count);
}
function scoreBucket(value) {
const score = Number.isFinite(value) ? value : 50;
if (score >= 90) return 5;
if (score >= 75) return 4;
if (score >= 60) return 3;
if (score >= 40) return 2;
if (score >= 20) return 1;
return 0;
}
async function refreshStatus() {
const started = performance.now();
try {
const response = await fetch('/api/status', { cache: 'no-store' });
const status = await response.json();
if (!response.ok) throw new Error('status failed');
setStat('status', `${status.ok ? 'ONLINE' : 'DEGRADED'} ${formatUptime(status.uptimeSeconds)}`);
setStat('latency', `${Math.max(1, Math.round(performance.now() - started))}MS`);
setStat('nodes', formatCount(status.liveClients));
setStat('memes', formatCount(status.memeCount));
} catch {
setStat('status', 'OFFLINE');
setStat('latency', '--MS');
setStat('nodes', '--');
setStat('memes', '--');
}
}
function setStat(name, value) {
for (const element of document.querySelectorAll(`[data-stat="${name}"]`)) {
element.textContent = value;
}
}
function formatUptime(value) {
const seconds = Math.max(0, Number.isFinite(value) ? value : 0);
const minutes = Math.floor(seconds / 60);
if (minutes < 1) return `UP ${seconds}S`;
if (minutes < 60) return `UP ${minutes}M`;
const hours = Math.floor(minutes / 60);
const remainingMinutes = minutes % 60;
if (hours < 24) return `UP ${hours}H${remainingMinutes > 0 ? ` ${remainingMinutes}M` : ''}`;
const days = Math.floor(hours / 24);
const remainingHours = hours % 24;
return `UP ${days}D${remainingHours > 0 ? ` ${remainingHours}H` : ''}`;
}
function updateScrollIndicator() {
const segments = [...scrollIndicator.querySelectorAll('span')];
const maxScroll = Math.max(1, document.documentElement.scrollHeight - window.innerHeight);
const progress = Math.min(1, Math.max(0, window.scrollY / maxScroll));
const activeIndex = Math.min(segments.length - 1, Math.round(progress * (segments.length - 1)));
segments.forEach((segment, index) => {
segment.classList.toggle('active', index === activeIndex);
});
}