Displays repository creation date/time/age.
// ==UserScript==
// @name GitHub Repo Age
// @description Displays repository creation date/time/age.
// @icon https://github.githubassets.com/favicons/favicon-dark.svg
// @version 1.2
// @author afkarxyz
// @namespace https://github.com/afkarxyz/userscripts/
// @supportURL https://github.com/afkarxyz/userscripts/issues
// @license MIT
// @match https://github.com/*/*
// @grant GM_xmlhttpRequest
// @connect api.codetabs.com
// @connect api.github.com
// ==/UserScript==
(function () {
'use strict';
const API_BASE_PROXY = 'https://api.codetabs.com/v1/proxy/?quest=https://api.github.com/repos/';
const API_BASE_DIRECT = 'https://api.github.com/repos/';
const CACHE_KEY_PREFIX = 'github_repo_created_';
const selectors = {
desktop: [
'.BorderGrid-cell .hide-sm.hide-md .f4.my-3',
'.BorderGrid-cell'
],
mobile: [
'.d-block.d-md-none.mb-2.px-3.px-md-4.px-lg-5 .f4.mb-3.color-fg-muted',
'.d-block.d-md-none.mb-2.px-3.px-md-4.px-lg-5 .d-flex.gap-2.mt-n3.mb-3.flex-wrap',
'.d-block.d-md-none.mb-2.px-3.px-md-4.px-lg-5'
]
};
let currentRepoPath = '';
function formatDate(isoDateStr) {
const createdDate = new Date(isoDateStr);
const now = new Date();
const diffTime = Math.abs(now - createdDate);
const diffDays = Math.floor(diffTime / (1000 * 60 * 60 * 24));
const diffHours = Math.floor((diffTime % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
const diffMinutes = Math.floor((diffTime % (1000 * 60 * 60)) / (1000 * 60));
const diffMonths = Math.floor(diffDays / 30.44);
const diffYears = Math.floor(diffMonths / 12);
const remainingMonths = diffMonths % 12;
const remainingDays = Math.floor(diffDays % 30.44);
const datePart = createdDate.toLocaleDateString('en-GB', {
day: '2-digit', month: 'short', year: 'numeric'
});
const timePart = createdDate.toLocaleTimeString('en-GB', {
hour: '2-digit', minute: '2-digit', hour12: false
});
let ageText = '';
if (diffYears > 0) {
ageText = `${diffYears} year${diffYears !== 1 ? 's' : ''}`;
if (remainingMonths > 0) ageText += ` ${remainingMonths} month${remainingMonths !== 1 ? 's' : ''}`;
} else if (diffMonths > 0) {
ageText = `${diffMonths} month${diffMonths !== 1 ? 's' : ''}`;
if (remainingDays > 0) ageText += ` ${remainingDays} day${remainingDays !== 1 ? 's' : ''}`;
} else if (diffDays > 0) {
ageText = `${diffDays} day${diffDays !== 1 ? 's' : ''}`;
if (diffHours > 0) ageText += ` ${diffHours} hour${diffHours !== 1 ? 's' : ''}`;
} else if (diffHours > 0) {
ageText = `${diffHours} hour${diffHours !== 1 ? 's' : ''}`;
if (diffMinutes > 0) ageText += ` ${diffMinutes} minute${diffMinutes !== 1 ? 's' : ''}`;
} else {
ageText = `${diffMinutes} minute${diffMinutes !== 1 ? 's' : ''}`;
}
return `${datePart} - ${timePart} (${ageText} ago)`;
}
const cache = {
getKey: (user, repo) => `${CACHE_KEY_PREFIX}${user}_${repo}`,
get: function(user, repo) {
try {
const key = this.getKey(user, repo);
const cachedData = localStorage.getItem(key);
if (!cachedData) return null;
const { value } = JSON.parse(cachedData);
return value;
} catch (err) { return null; }
},
set: function(user, repo, value) {
try {
const key = this.getKey(user, repo);
const data = { value: value };
localStorage.setItem(key, JSON.stringify(data));
} catch (err) { /* silently fail */ }
}
};
async function getRepoCreationDate(user, repo) {
const cachedDate = cache.get(user, repo);
if (cachedDate) {
return cachedDate;
}
function makeApiRequest(apiUrl, apiName) {
return new Promise((resolve) => {
GM_xmlhttpRequest({
method: 'GET', url: apiUrl,
onload: function(response) {
if (response.status === 403) {
resolve({ success: false, status: 403, rateLimited: true, apiName: apiName }); return;
}
if (response.status >= 200 && response.status < 300) {
try {
const data = JSON.parse(response.responseText);
const createdAt = data.created_at;
if (createdAt) {
resolve({ success: true, data: createdAt, status: response.status, apiName: apiName });
} else {
resolve({ success: false, status: response.status, error: 'missing_data', apiName: apiName });
}
} catch (e) {
resolve({ success: false, status: response.status, error: 'parse_error', apiName: apiName });
}
} else {
resolve({ success: false, status: response.status, error: 'http_error', apiName: apiName });
}
},
onerror: () => resolve({ success: false, status: 0, error: 'network_error', apiName: apiName }),
ontimeout: () => resolve({ success: false, status: 0, error: 'timeout_error', apiName: apiName })
});
});
}
let result = await makeApiRequest(`${API_BASE_DIRECT}${user}/${repo}`, 'Direct GitHub API');
if (result.success) {
cache.set(user, repo, result.data);
return result.data;
}
if (result.status === 403 && result.rateLimited) {
result = await makeApiRequest(`${API_BASE_PROXY}${user}/${repo}`, 'Proxy API');
if (result.success) {
cache.set(user, repo, result.data);
return result.data;
} else {
return null;
}
}
return null;
}
async function insertCreatedDate() {
const match = window.location.pathname.match(/^\/([^\/]+)\/([^\/]+)/);
if (!match || match[0].includes('/assets/') || match[0].includes('/blob/') || match[0].includes('/tree/')) {
if (match) currentRepoPath = '';
return false;
}
const [_, user, repo] = match;
const repoPath = `${user}/${repo}`;
currentRepoPath = repoPath;
const createdAt = await getRepoCreationDate(user, repo);
if (!createdAt) return false;
const formattedDate = formatDate(createdAt);
let insertedCount = 0;
document.querySelectorAll('.repo-created-date').forEach(el => el.remove());
for (const [view, selectorsList] of Object.entries(selectors)) {
for (const selector of selectorsList) {
const element = document.querySelector(selector);
if (element && !element.querySelector(`.repo-created-${view}`)) {
insertDateElement(element, formattedDate, view);
insertedCount++;
break;
}
}
}
return insertedCount > 0;
}
function insertDateElement(targetElement, formattedDate, view) {
const p = document.createElement('p');
p.className = `f6 color-fg-muted repo-created-date repo-created-${view}`;
p.style.marginTop = '4px'; p.style.marginBottom = '8px';
p.innerHTML = `<strong>Created</strong> ${formattedDate}`;
if (view === 'mobile') {
const flexWrap = targetElement.querySelector('.flex-wrap');
if (flexWrap && flexWrap.parentNode) {
flexWrap.parentNode.insertBefore(p, flexWrap.nextSibling); return;
}
const dFlex = targetElement.querySelector('.d-flex.gap-2');
if (dFlex && dFlex.parentNode) {
dFlex.parentNode.insertBefore(p, dFlex.nextSibling); return;
}
}
targetElement.insertBefore(p, targetElement.firstChild);
}
function checkAndInsertWithRetry(retryCount = 0, maxRetries = 3) {
insertCreatedDate().then(inserted => {
if (!inserted && retryCount < maxRetries) {
const delay = Math.pow(2, retryCount) * 300;
setTimeout(() => checkAndInsertWithRetry(retryCount + 1, maxRetries), delay);
}
});
}
function checkForRepoChange() {
const match = window.location.pathname.match(/^\/([^\/]+)\/([^\/]+)/);
let newRepoPath = '';
if (match && !match[0].includes('/assets/') && !match[0].includes('/blob/') && !match[0].includes('/tree/')) {
newRepoPath = `${match[1]}/${match[2]}`;
}
if (newRepoPath && newRepoPath !== currentRepoPath) {
currentRepoPath = newRepoPath;
checkAndInsertWithRetry();
} else if (!newRepoPath && currentRepoPath) {
document.querySelectorAll('.repo-created-date').forEach(el => el.remove());
currentRepoPath = '';
}
}
function init() {
checkAndInsertWithRetry();
observeDOM();
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
const originalPushState = history.pushState;
history.pushState = function() {
originalPushState.apply(this, arguments);
setTimeout(checkForRepoChange, 150);
};
const originalReplaceState = history.replaceState;
history.replaceState = function() {
originalReplaceState.apply(this, arguments);
setTimeout(checkForRepoChange, 150);
};
window.addEventListener('popstate', () => setTimeout(checkForRepoChange, 150));
function observeDOM() {
const observer = new MutationObserver(() => {
setTimeout(checkForRepoChange, 200);
});
observer.observe(document.body, { childList: true, subtree: true });
}
})();