GitHub Repo Age

Displays repository creation date/time/age.

当前为 2025-05-11 提交的版本,查看 最新版本

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// ==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 });
    }
})();