GitHub Repo Age

Displays repository creation date/time/age.

Versión del día 11/5/2025. Echa un vistazo a la versión más reciente.

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Necesitará instalar una extensión como Tampermonkey para instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==UserScript==
// @name         GitHub Repo Age
// @description  Displays repository creation date/time/age.
// @icon         https://github.githubassets.com/favicons/favicon-dark.svg
// @version      1.1
// @author       afkarxyz
// @namespace    https://github.com/afkarxyz/userscripts/
// @supportURL   https://github.com/afkarxyz/userscripts/issues
// @license      MIT
// @match        https://github.com/*/*
// @grant        none
// ==/UserScript==

(function () {
    'use strict';
    const apiBase = 'https://api.github.com/repos/';
    const CACHE_KEY_PREFIX = 'github_repo_created_';
    const CACHE_EXPIRY = 7 * 24 * 60 * 60 * 1000;
    
    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: function(user, repo) {
            return `${CACHE_KEY_PREFIX}${user}_${repo}`;
        },
        
        get: function(user, repo) {
            try {
                const key = this.getKey(user, repo);
                const cachedData = localStorage.getItem(key);
                
                if (!cachedData) return null;
                
                const { value, expiry } = JSON.parse(cachedData);
                
                if (expiry && expiry < Date.now()) {
                    console.log('Cache expired, removing item');
                    localStorage.removeItem(key);
                    return null;
                }
                
                console.log('Using cached data for ' + user + '/' + repo);
                return value;
            } catch (err) {
                console.error('Error reading from cache:', err);
                return null;
            }
        },
        
        set: function(user, repo, value) {
            try {
                const key = this.getKey(user, repo);
                const data = {
                    value: value,
                    expiry: Date.now() + CACHE_EXPIRY
                };
                
                localStorage.setItem(key, JSON.stringify(data));
                console.log('Saved to cache: ' + user + '/' + repo);
            } catch (err) {
                console.error('Error writing to cache:', err);
            }
        },
        
        cleanup: function() {
            try {
                const now = Date.now();
                for (let i = 0; i < localStorage.length; i++) {
                    const key = localStorage.key(i);
                    
                    if (key && key.startsWith(CACHE_KEY_PREFIX)) {
                        try {
                            const data = JSON.parse(localStorage.getItem(key));
                            if (data.expiry && data.expiry < now) {
                                localStorage.removeItem(key);
                                console.log('Cleaned up expired cache item:', key);
                            }
                        } catch (e) {
                            localStorage.removeItem(key);
                        }
                    }
                }
            } catch (err) {
                console.error('Error cleaning cache:', err);
            }
        }
    };
    
    async function getRepoCreationDate(user, repo) {
        const cachedDate = cache.get(user, repo);
        if (cachedDate) {
            return cachedDate;
        }
        
        const apiUrl = `${apiBase}${user}/${repo}`;
        
        try {
            const res = await fetch(apiUrl);
            
            if (res.status === 403) {
                console.warn('GitHub API rate limit exceeded. Try again later.');
                return null;
            }
            
            if (!res.ok) {
                console.error(`API error: ${res.status} - ${res.statusText}`);
                return null;
            }
            
            const data = await res.json();
            const createdAt = data.created_at;
            
            if (createdAt) {
                cache.set(user, repo, createdAt);
                return createdAt;
            }
            
            return null;
        } catch (err) {
            console.error('Failed to fetch repo creation date:', err);
            return null;
        }
    }
    
    async function insertCreatedDate() {
        const match = window.location.pathname.match(/^\/([^\/]+)\/([^\/]+)/);
        if (!match) 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++;
                    console.log(`Added creation date to ${view} view using selector: ${selector}`);
                    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.insertBefore(p, flexWrap.nextSibling);
                return;
            }
            
            const dFlex = targetElement.querySelector('.d-flex');
            if (dFlex) {
                dFlex.parentNode.insertBefore(p, dFlex.nextSibling);
                return;
            }
        }
        
        targetElement.insertBefore(p, targetElement.firstChild);
    }
    
    function checkAndInsertWithRetry(retryCount = 0, maxRetries = 5) {
        insertCreatedDate().then(inserted => {
            if (!inserted && retryCount < maxRetries) {
                const delay = Math.pow(2, retryCount) * 500;
                console.log(`Retrying in ${delay}ms (attempt ${retryCount + 1}/${maxRetries})`);
                setTimeout(() => checkAndInsertWithRetry(retryCount + 1, maxRetries), delay);
            }
        });
    }
    
    function checkForRepoChange() {
        const match = window.location.pathname.match(/^\/([^\/]+)\/([^\/]+)/);
        if (!match) return;
        
        const [_, user, repo] = match;
        const repoPath = `${user}/${repo}`;
        
        if (repoPath !== currentRepoPath) {
            console.log(`Repository changed: ${currentRepoPath} -> ${repoPath}`);
            checkAndInsertWithRetry();
        }
    }
    
    cache.cleanup();
    
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', () => checkAndInsertWithRetry());
    } else {
        checkAndInsertWithRetry();
    }
    
    const originalPushState = history.pushState;
    history.pushState = function() {
        originalPushState.apply(this, arguments);
        setTimeout(checkForRepoChange, 100);
    };
    
    const originalReplaceState = history.replaceState;
    history.replaceState = function() {
        originalReplaceState.apply(this, arguments);
        setTimeout(checkForRepoChange, 100);
    };
    
    window.addEventListener('popstate', () => {
        setTimeout(checkForRepoChange, 100);
    });
    
    const observer = new MutationObserver((mutations) => {
        for (const mutation of mutations) {
            if (mutation.type === 'childList' && 
                (mutation.target.id === 'js-repo-pjax-container' || 
                 mutation.target.id === 'repository-container-header')) {
                setTimeout(checkForRepoChange, 100);
                break;
            }
        }
    });
    
    observer.observe(document.body, { childList: true, subtree: true });
})();